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Ord 2733 9/19/1972
• ORDINANCE NO. AN ORDINANCE SETTING FORTH THE REGULATIONS CONTROLLING PLUMBING INSTALLATIONS; ESTABLISHES THE ADMINISTRATIVE PROCEDURE FOR ISSUANCE OF PERMITS AND ESTABLISHES FEES FOR PERMITS ; AND PROVIDES FOR INSPECTION OF ALL PLUMB- ING INSTALLATIONS . BE IT ORDAINED BY THE BOARD OF ALDERMEN OF THE CITY OF WICHITA FALLS, TEXAS : If any section, subsection, clause, phrase or sentence of this ordinance or the application thereof to any person or circum- stances is held invalid, such invalidity shall not affect other pro- visions or applications of this ordinance which can be given effect without invalid provision or application, and to this end the pro- visions of this ordinance are declared to be severable. PASSED AND APPROVED THE 19TH DAY OF SEPTEMBER, 1972. MAYOR City Clerk ORDINANCE NO. 2733 AN ORDINANCE SETTING FORTH THE REGULATIONS CONTROLLING PLUMBING INSTALLATIONS; ESTAB- LISHES THE ADMINISTRATIVE PROCEDURE FOR ISSUANCE OF PERMITS AND ESTABLISHES FEES FOR PERMITS; AND PROVIDES FOR INSPECTION OF ALL PLUMBING INSTALLATIONS. BE IT ORDAINED BY THE BOARD OF ALDERMEN OF THE CITY OF WICHITA FALLS, TEXAS: 40 CHAPTER I - ADMINISTRATION SECTION 101 - TITLE AND SCOPE 101.1 Title The provisions embraced within the following chapters and sections shall constitute, be known and cited as "The City of Wichita Falls Plumbing Code." 101.2 Code Remedial. This code is hereby declared to be remedial, and shall be construed to secure the beneficial interest and purposes thereof, which are health, sani- tation, general public safety and welfare, by regulating installation and maintenance of all plumbing. 101.3 Scope. The provisions of this code shall apply to every plumbing installation, including alterations, repairs, replacement, equipment, appliances, fixtures, fittings and/or appurtenances thereto, and/or when connected to the water, gas or sewerage system. 101.4 Maintenance. All plumbing, both existing and new, and all parts thereof,_ shall be main- tained in a safe and sanitary condition. All devices or safeguards which are • required by this code shall be maintained in good working order. The owner, or his designated agent, shall be responsible for the maintenance or plumbing. 101.5 Plumbing Installation or Maintenance by Home Owner. Nothing in this code shall prevent any home owner from installating or main- taining plumbing within his own- property boundries,_p 'oviding_such plumbing work is done by himself and is used exclusively by him or his family. Such privi- ledge does not convey the right to violate any of the provisions of this code, nor is it to be construed as_exempting. any. such property owner from obtaining a permit and paying the required fees therefor. SECTION 102 - ORGANIZATION 102.1 Plumbing Inspector. There is hereby created.the Office of Plumbing- Inspector. The person chosen to fill the office of Plumbing_Inspector shall be of good moral character, shall be possessed of such executive ability as is required-f or the performance of his duties, and shall have a thorough knowledge of the standard- materials and methods used in the installation of plumbing, plumbing- systems,-and gas fittings. He shall be familiar with the approved_methods of construction of buildings and structures into which plumbing and gas systems may be incorporated. He shall have had at least eight years experience as a plumbing- contractor or journey- man in the City of Wichita Falls and shall have a workable knowledge of sani- tation, the design and installation of plumbing equipment-, gas fittings, rain • drainage and engineering practice. 1 - 1 102.2 Appointment of Inspectors. The Chief of the Division of Building Inspection, with the advise and con- sent of the City Manager, is empowered to appoint and employ the Plumbing Inspector and such additional Plumbing Inspectors as are necessary for the proper administration and enforcement of this code. 102.3 Restriction on Employees. No officer or employee connected with the department, except one whose only connection is as a member of the board, established by this Ordinance, shall be financially interested in the furnishing of labor, material, or appliances for the construction, alteration, or maintenance of plumbing installations or in the making of plans or of specifications therefor, unless he is the owner of such building. No such officer or employee shall engage in any work which is inconsistent with his duties or with the interests of the department. 102.4 Records. The Plumbing Inspector shall keep, or cause to be kept, a record of the business of the plumbing section. The records of the plumbing section shall be open to public inspection at all reasonable times. 102.5 Plumbing Advisory Board. There is hereby created a Board of Advisors for the City of Wichita Falls • which shall be known as the Plumbing Advisory Board. The Plumbing Advisory Board shall consist of five (5) members, who shall be appointed by the Mayor, with consent of city Council and shall serve for a term of two (2) years each. One member of said board shall be a licensed engineer, one member of said board shall be an employee of Lone Star Gas Company, One member of said board shall be a licensed master plumber, one member of said board shall be an individual who is in no way associated with any of the other four members of the board. The secretary of said board shall be the Plumbing Inspector for the City of Wichita Falls, Texas. All members of said board shall be residents of the City of Wichita Falls, Texas and shall serve without pay. On the first board appointed hereafter, three members shall be appointed to serve one year terms, and two members shall be appointed to serve two year terms. Thereafter, each member shall be appointed to serve two years. Terms shall expire on December 31. The Plumbing Advisory Board shall investigate and make recommendations to the Board of Aldermen of the City of Wichita Falls, as to modifications in the Plumbing Code of the City of Wichita Falls, and use of new materials that come onto the market. The Plumbing Advisory Board shall have authority to grant modifications or variances to the Plumbing Code of the City of Wichita Falls for any specific case. In varying the applications of any provision of the Plumbing Code or in modifying an order of the Plumbing Inspector not less than three (3) affirma- tive votes shall be required. Any such decision shall be in writing and shall specify in what manner such variation or modification shall be made and the conditions upon which it shall be made and the reasons thereof, one of which reasons must be to prevent undue hardship. 1 - 2 The Plumbing Advchsory Board shall promulgate its own rules of procedure and shall meet at such times, as it may set, and shall be subject to called • meetings by either the secretary of said board or the chairman of said board. SECTION 103 - POWERS AND DUTIES OF PLUMBING INSPECTOR 103.1 Right of Entry. The Plumbing Inspector shall enforce the provisions of this code and he or his duly authorized representative, may enter any building, structure, or premises to perform any duty imposed upon him by this code. 103.2 Stop Work Orders. Upon notice from the Plumbing Inspector that work on any plumbing instal- lation is being done contrary to the provisions of this code or in a dangerous or unsafe manner, such work shall be immediately stopped. Such notice shall be in writing and shall be given to the owner of such property, or to his agent, or to the person doing the work, and shall state the conditions under which work may be resumed. Where any emergency exists, oral notice given by the Plumbing Inspector shall be sufficient. 103.3 Revocation of Permits. The Plumbing Inspector may revoke a permit or approval, issued under the provisions of this act, in case there has been any false statement or mis- representation as to the material fact in the application or plans on which the permit or approval was based. In all such cases no permit fees shall be refunded. 103.4 Unsafe Installation. All plumbing installations, regardless of type, which are unsanitary or which constitute a hazard to human life, health or welfare are hereby declared illegal and shall be abated by repair and rehabilitation or by demo- lition in accordance with the procedure as outlined in Section 103.4, Unsafe Buildings, of the Southern Standard Building Code. 103.5 Requirements Not Covered by Code. Any requirement necessary for the safety, strength or stability of an existing or proposed plumbing installation, or for the safety of the occupants of a building or structure, not specifically covered by this code, shall be determined by the Plumbing Inspector, subject to the Administrative Authority. 103.6 Alternate Materials and Alternate Methods of Installations. Alternate plumbing materials and alternate methods of installations shall be approved in accordance with Section 503 - Alternate Materials and Methods. 103.7 Liability. • Any officer or employee, or member of any board, charged with the enforce- ment of this code, acting for the local governing body in the discharge of his 1 - 3 duties, shall not thereby render-himself liable personally and he is hereby relieved from all personal liability for any damage that may occur to persons • or property as a result of any act required or permitted in the discharge of his duties. Any suit brought against any officer or employee because of such act performed by him in the enforcement of any provision of this code shall be defended by the Department of Law until the final termination of the proceedings. SECTION 104 - APPLICATION FOR PERMIT 104.1 Persons Who May Obtain a Permit. Permits shall be issued only to the following: . (1) Any Master Plumber licensed by the State Board of Plumbing Examiners. (2) Any property owner for plumbing work to be done by him in a building owned or occupied by him as his home. (3) Any appliance dealer or employee of an appliance dealer who is acting as an appliance installation man or appliance service man in connecting appliances to existing piping installations. 104.2 When Required. Any duly qualified person who desires to connect any plumbing work with any sewers, sanitary or storm, septic tanks or sewage disposal of any kind, or private connection or install fixtures or appliances in new or existing plumbing, shall first make application to the Plumbing Inspector and obtain the required permit therefor. Ordinary minor repairs may be made with the • approval of the Plumbing Inspector without a permit provided that such repairs shall not violate the provisions of this code. 104.3 Form. Application for a permit shall be made in person. The applicant shall furnish information as may be required to complete the application form furnished by the Plumbing Inspector. 104.4 Drawings and Specifications. Whenever, in the opinion of the Plumbing Inspector, drawings and speci- fications are needed to show definitely the nature and character of the work for which the application is made, the applicant shall furnish such drawings and specifications. These drawings and specifications shall be drawn to scale and such set shall be retained and filed as a permanent record in the office of the Plumbing Inspector. 104.5 Examination of Drawings. The Plumbing Inspector shall examine or cause to be examined each appli- cation for a permit and the drawings and specifications which may be filed therewith, and shall ascertain by such examination whether the plumbing installation indicated and described is in accordance with the requirements of this code and all other pertinent laws or ordinances. 1 - 4 SECTION 105 - PERMITS • 105.1 Action on Application. (a) If the Plumbing Inspector is satisfied that the work described in any application for permit and the drawings and specifications which may be filed therewith conform to the requirements of this code, and other pertinent laws and ordinances, he shall issue a permit therefor to the applicant. (b) If the application for permit and the drawings and specifications which may be filed therewith describe work which does not conform to the requirements of this code or other pertinent laws or ordinances, the Plumbing Inspector shall not issue a permit, but shall return the drawings to the applicant with his re- fusal to issue such a permit. Such refusal shall, when requested, be in writing and shall contain the reasons therefor. 105.2 Condition of the Permit. The Plumbing Inspector shall act upon an application for a permit with plans as filed, or as amended, without unreasonable or unnecessary delay. A permit issued shall be construed to be a license to proceed with the work and shall not be construed as authority to violate, cancel, alter, or set aside any of the provisions of this code, nor shall such issuance of a permit prevent the Plumbing Inspector from thereafter requiring correction or errors in plans or in construction, or of violations of this code. Any permit issued shall become invalid unless the work suthorized by such permit is suspended or abandoned for a period of one year after the time the work is commenced; provided, that for cause, one or more extensions of time for periods not exceeding ninety days eachgi may be allowed in writing by the Plumbing Inspector. 105.3 Permits not Required. No plumbing permit is required to do minor repairs such as the maintenance, repair or replacement in kind of the following: (1) Yard hydrants and sill cocks. (2) Flush valves and float-balls in water closet tanks. (3) Accessible traps on lavatories or sinks. (4) Replacing of plumbing fixtures where no change. in "roughing-in" is involved except replacement of water heaters. The above examples are representative only and should not be considered as a limitation on the term "minor repairs." SECTION 106 - FEES 106.1 General. No permit shall be valid until the fees prescribed in this section shall have been paid; nor shall an amendment to a permit be approved until the additional fees, if any, shall have been paid. 106.2 Failure to Obtain a Permit. If any person commences any work on a plumbing installation before obtain- ing the necessary permit from the City, he shall be subject to the penalty prescribed herein. 1 - 5 106.3 Schedule of Permit Fees. • (a) Permit Fees: Water closets $1.25 Bath tubs 1.25 Lavatories 1.25 Kitchen sinks 1.25 Pantry sinks 1.25 Service sinks 1.25 Urinals 1.25 Showers 1.25 Sand traps 1.25 Grease traps 2,00 Condensate drain 1.25 Water heaters 1.25 Floor drains 1.25 Disposals 1.25 Dishwashers 1.25 Water fountains 1.25 Bath heaters 1.25 Washing machines 1.25 Trailer traps 3.00 Disconnect 3.00 Septic tank 5.00 Sewer 3.00 Gas service linee 3.00 • Central system 3.00 Floor or wall furnace 3.00 Gas dryer 3.00 Outside appliances 3.00 5.00 Incinerator 5.00 Sprinkler system . 11 Minimum fee -.3-A44- S(r° All other fixtures not listed 1.25 Pumps for gasoline or other volatiles 3.00 Storage tanks for gasoline or other volatiles 3.00 A fee of Five Dollars ($5.00) will be paid for an opening in any street alley, sidewalk or other public place. (b) Sewer Connection Fees: The sewer connection fees shall be as are from time to time pre- scribed by the local governing body. (c) Sewer Tap Fees: Where no sewer wye is found within three feet of either side where shown on city sewer map, the city sewer crew shall make a suitable tap in the main line at no cost to Plumbing Contractor or owner of property affected, If taps are requested at locations other than shown or when no tap is shown in city sewer map, a cost of $25.00 will be charged to Plumbing Contractor or property owner. 1 - 6 When it is found that more than one house sewer is on a riser into a sewer main and it is found that the riser is broken, the city sewer crew is bound to help plumbing contractor finish job. (d) Water Connection Fees: The water connection fees shall be as are from time to time prescribed by the local governing body. (e) Point of Connection: Building sewers and water service pipes shall connect to the public sewer and water main at a point designated by the proper municipal authority. SECTION 107 - INSPECTIONS 107.1 Inspection Required. All new plumbing work, and such portions of existing systems as may be affected by new work or any changes, shall be inspected to insure compliance with all the requirements of this code and to assure that the installation and construction of the plumbing system is in accordance with approved plans. 107.2 Notification. (a) Advance Notice: It shall be the duty of the plumber to give reasonable advance notice • to the Plumbing Inspector when plumbing work is ready for test or inspection. (b) Plumber's Responsibility: It shall be the duty of the plumber to make sure that the work will stand the test prescribed before giving the above notice. (c) Retesting: If the Plumbing Inspector finds that the work will not pass the test, the plumber shall be required to make necessary corrections and the work shall then be resubmitted for inspection. Where additiona ions are necessary for retesting there shall be an additional fee f. each such inspection. 107.3 Material and Labor for Tests. The equipment, material, power, and labor necessary for the inspection and test shall be furnished by the plumber. 107.4 Test of Drainage and Vent System. All the piping of the plumbing system shall be tested with water or air. After the plumbing fixtures have been set and their traps filled with water, the entire drainage system shall be submitted to final tests. The Plumbing Inspector S may require the removal of any cleanouts, to ascertain if the pressure has reached all parts of the system. 1 -,7 107.5 Methods of Testing Drainage and.Vent Systems. • (a) Water Test: The water test shall be applied to the drainage system either in its entirety or in sections. If applied to the entire system, all openings in the piping shall be tightly closed, except the highest opening and the system filled with water to point of overflow. If the system is tested in sections, each opening shall be tightly plugged except the highest openings of the section inder test, and each section shall be filled with water, but no section shall be tested with less than a 10 foot head of water. In testing successive sections at least the upper 10 feet of the next preceding section shall be tested, so that no joint or pipe in the building (except the uppermost 10 feet of the system) shall have been submitted to a test of less than a 10-foot head of water. The water shall be kept in the system, or in the portion under test, for at least 15 minutes before inspection starts; the system shall then be tight at all points. (b) Air Test: The air test shall be made by attaching an air compressor or testing apparatus to any suitable opening and after closing all other inlets and outlets to the system, forcing air into the system until there is a uniform gauge pressure of 5 pounds per square inch or sufficient to balance a column of mercury 10 inches in height. This pressure shall be held without intro- duction of additional air for a period of at least 15 minutes. (c) Final Test: The final test of the completed drainage and vent system shall be visual and in sufficient detail to insure that the provisions of this code have been complied with, provided however that, for cause, the plumber may be required to subject the plumbing to either a smoke or peppermint test. Where the smoke test is preferred, it shall be made by filling all traps with water and then introducing into the entire system a pungent, thick smoke produced by one or more smoke machines. When the smoke appears at stack openings on the roof they shall be closed and a pressure equivalent to a f- inch water column shall be built and maintained for 15 minutes before inspection starts. Where the peppermint test is preferred, 2 ounces of oil of pepper- mint shall be introduced for each line or stack. 107.6 Test of Water-Supply System. Upon completion of a section or of the entire water-supply system, it shall be tested and proved tight under a water pressure not less than 25 pounds above the working pressure under which it is to be used. The water used for tests shall be obtained from a potable source of supply. 107.7 Test of Interior Leaders or Downspouts. Leaders or downspouts and branches within a building shall be tested by water or air in accordance with paragraph 107.5 (a) or paragraph 107.5 (b). • 107.8 Covering the Work. (a) The plumbing system or part thereof shall not be covered until it has been inspected, tested and approved as prescribed in this Chapter, it shall be uncovered upon the direction of the Plumbing Inspector. 1 - 8 107.9 Test of Defective Plumbing. The The drainage system of any building, where there is reason to believe that it has become defective, shall be subjected to test or inspection. SECTION 108 - CERTIFICATE OF APPROVAL 108.1 Roughing-in Inspection. Upon the satisfactory completion of the roughing-in inspection, approval shall be so noted on the plumbing permit. This approval shall give the date of the roughing-in inspection and the initials of the inspector. 108.2 Final Inspection. Upon the satisfactory completion and final test of the plumbing system, a certificate of approval shall be issued by the Plumbing Inspector to be delivered to the owner and building shall not be occupied prior to completion of said system and/or issuance of certification of approval. SECTION 109 - LICENSING AND BONDING OF PLUMBERS 109.1 License Required. (a) It shall be unlawful for any person, firm or corporation to engage in the practice of plumbing in Wichita Falls without first securing from the State of Texas a proper license issued by the State Board of Plumbing Examiners • at Austin, Texas, working under the Plumbing License Law of 1947. (b) It shall be unlawful for any person, firm or corporation to represent himself or themselves as a registered and licensed plumber of any class set out in this code, or to use falsely the words, Plumbing Contractor, journeyman plumber, or plumber, or words of similar import or meaning on signs, cards, stationary, or by other misleading manner whatsoever within the City of Wichita Falls, unless said person, firm, or corporation is, in fact, registered and holds a valid license within the meaning of the words used and as provided in this code. (c) No person, firm or corporation shall be able to apply or pay for any inspection fee, permit fee, excavation fee or tap fee, without presentation of the proper bond and a valid state master plumber's license. 109.2 License Not Transferable. It shall be unlawful for any person to lend, rent or transfer his plumbing license or any right therein contained to any person, and for any person to make use of any such rights which are not actually his own. No person, firm or corporation holding a plumbing license shall allow his, her, or their names to be used by any person directly or indirectly to obtain a plumbing permit or permits except as provided in this Code. 109.3 Registration Required. iAny person, company, firm, partnership or corporation desiring to engage in the business of plumbing or appliance dealer within the corporate limits of the 1 - 9 City of Wichita Falls, Texas shall register with the City of Wichita Falls, iii the Plumbing Inspector's Office, the correct name, address and telephone number under which they will be doing business. 109.4 Supervision. In the actual work of installing, maintaining, altering or repairing any plumbing for which a permit is required by this Code, there shall be super- vision by a qualified and licensed plumber of the proper classification as required by this Code. Should such supervision and control not be maintained, . the Plumbing Inspector may order the work to be discontinued until proper supervision has been employed or supplied; provided that nothing therein shall be construed as prohibiting the employment of unskilled laborers to handle, haul or carry materials when assisting a person duly registered and licensed under the provisions of this Code. 109.5 Acts Permitted Without License. (a) Plumbing work done by a property owner in a building owned or occupied by him as his home. (b) Plumbing work done by anyone who is regularly employed as or acting as a maintenance man or maintenance engineer, incidental to and in connection with the business in which he is employed or engaged and who does not engage in the occupation of a plumber for general public; construction, installation and maintenance work done upon the premises or equipment of a railroad by an employee thereof who does not engage in the occupation of a plumber for the • general public; and plumbing work done by persons engaged by any public service company in the laying, maintenance and operation of its service mains or lines and the installation, alteration, adjustment, repair, removal and renovation of all types of appurtenances, equipment and appliances; appliance installation and service work done by anyone who is an appliance dealer or is employed by an appliance service man in connecting appliances to existing piping instal- lations. PROVIDED, HOWEVER, THAT ALL WORK AND SERVICE HEREIN NAMED OR REFERRED TO SHALL BE SUBJECT TO INSPECTION AND APPROVAL IN ACCORDANCE WITH THE TERMS OF ALL LOCAL VALID CITY OR MUNICIPAL ORDINANCES. 109.6 Bond Required. (a) All persons, firms or corporations engaged in the plumbing business, or that install appliances of any kind having piping, fixtures, appurtenances for supply of water or gas or drainage for domestic or commercial purposes in and about buildings where a person or persons live, work, or assemble in the City of Wichita Falls under terms of this Ordinance shall before they do any work, execute and deliver to the City of Wichita Falls a surety bond in the sum of Two Thousand Dollars ($2,000) , payable to the City of Wichita Falls and as herein otherwise provided for, executed by a company authorized to do business in the State of Texas, which said bond shall be conditioned as follows: (b) Bonds shall be conditioned that all said appliance installation and plumbing work shall be done so that it shall conform with all of the rules and regulations provided by this ordinance and all ordinances that may be hereafter passed. The bonds shall be further conditioned that the City of Wichita Falls will be fully indemnified against all loss and damage occasioned by the negligence of the principal therein failing properly to execute and protect any work done by him or his employees or under his direction and 1 - 10 supervision. The bond shall be further conditioned that the principal shall replace in a good and workmanlike manner and restore any portion of any street or alley which may be opened for the purpose of making any connection with any water, sewer or gas pipe, and all such openings or excavations shall be refilled or restored and street or alley placed in as good condition as it existed before such excavation was made. In case any opening or excavation in any street or alley is not restored as herein provided to the satisfaction of the City Engineer, the principal shall promptly restore or cause to be restored the same upon notice from such City Engineer; if same is not re- stored within a reasonable time after such notice from the City Engineer, and five days shall be deemed a reasonable time for the commencement of the work, the City Engineer shall cause the street or alley to be repaired at the cost of the principal and surety; the statement of the cost as furnished by the City Engineer shall be conclusive evidence against such obligors. (c) In case the principal on such bond shall fail or refuse to install or contract any appliance or plumbing work in accordance with such rules and regulations contained in this ordinance or any ordinance that may be here- after passed, the owner of any house or premises who may be aggrieved or injured thereby may have recourse on said bond, or the City may take action on the bond for the use and benefit of such owner; provided that in such case, such work is first disapproved by the Plumbing Inspector as herein provided. Should the Plumbing Inspector refuse to issue his certificate of approval of said work on account of the failure of the plumber or appliance dealer to comply with such rules and regulations, the Inspector shall notify the principal to make such changes as are required to comply with such rules and regulations; in case of failure or refusal on the part of said principal to rectify or change such work so as to make it comply with such rules and regulations, then after three days from the time notice was given, it shall be the duty of the sureties on the bond herein required to make the required changes; in default of the principal or the sureties on the bond performing the same as herein provided the said owner, or the City for the owner's benefit, may have recourse against the principal and sureties on the bond herein pro- vided for. (c) Said bonds shall run the calendar year and be renewed on January 1st, • and no appliance or plumbing work shall be done by, and no permits issued to any contracting p;umber or appliance dealer unless he has such bond in full force and effect. SECTION 110 - EXCAVATION WITHIN THE RIGHT-OF-WAY OF ANY PUBLIC STREET OR ALLEY No person, firm or corporation shall make or cause or permit to be made any cut or excavation in or under the surface of any public street, alley, sidewalk, or other public place, in the city, without first obtaining a written permit to make this excavation as provided in Section 27.39 of the Code of Ordinances of the City of Wichita Falls. 1 - 11 SECTION 111 - VIOLATIONS AND PENALTIES • Any person, firm or corporation violating any of the terms or provisions of this Code, or who may aid or assist in such violation shall be guilty of a misdemeanor, and upon conviction in Corporation Court shall be fined in any sum not to exceed Two Hundred ($200°00) Dollars, and each and every day of continuance of such violation shall constitute a distinct and separate offense. SECTION 112 - VALIDITY In any section, sub-section, sentence, clause or phrase of this ordinance is for any reason held to be unconstitutional, such decision shall not affect the validity of the remaining portion of this Code. • 1 - 12 CHAPTER II BASIC PRINCIPLES SECTION 201 - BASIC PRINCIPLES Principle No. 1. All buildings, structures and premises intended for human habitation, occupancy, use or employment; or the preparation shall be provided with an adequate, safe and potable water supply through a safe system of piping to all fixtures, appliances, appurtenances, etc. Principle No. 2. Every building having plumbing fixtures installed and intended for human habitation, occupancy, or use on premises abutting on a street, alley, or easement in which there is a public sewer shall have a separate connection with the sewer. Principle No. 3. Dwelling type buildings provided with a drainage system, a public sewer connection or a private sewage disposal system, shall have at least one water closet, one bath tub or shower, one lavatory, one kitchen-type sink and adequate hot water facilities for each family unit to meet minimum basic requirements for health, sanitation and personal hygiene. All other buildings, structures, or premises intended for human occupancy or use shall be provided with adequate sanitary facilities as may be required, but not less than one water closet and one hand-washing lavatory. Principle No. 4. Plumbing_fixtures shall be made of smooth non-absorbent material, shall be free from concealed fouling surfaces, and shall be located in ventilated enclosures. Principle No. 5. Each fixture directly connected to the drainage system shall be equipped with a water-seal trap. Principle No. 6. No substance which will clog the pipes, produce explosive mixtures, destroy the pipes or their joints, or interfere unduly with the sewage-disposal process shall be allowed to enter the building drain- age system. Principle No. 7. Proper protection shall be provided to prevent contami- nation of food, water, sterile goods, and similar materials by backflow of sewage. When necessary, the fixture, device, or appliance shall be connected indirectly with the building drainage system. Principle No. 8. No water closet shall be located in a room or compart- ment which is not properly lighted and ventilated. Principle No. 9. If water closets or other plumbing fixtures are installed in buildings where there is no sewer within a reasonable distance, suitable pro- vision shall be made for disposing of the building_sewage_ by some accepted method of sewage treatment and disposal. Principle No. 10. Where a plumbing drainage system may be subject to backflow of sewage, suitable provision shall be made to prevent its overflow • in the building. Principle No. 11. All plumbing fixtures, devices, appliances, and appurtenances, shall be adequately supplied with water in sufficient volume 2 - 1 and pressure to enable them to function properly. • Principle No. 12. The pipes conveying water to plumbing fixtures, appliances, devices and appurtenances shall be of sufficient size as to supply water at rates that will prevent undue pressure drops at any one fixture, when any other fixture, appliance, device or appurtenances, or groups, is being flushed, operated or used. Principle No. 13. There shall be no direct or indirect cross connections, either existing or potential, between a safe potable water supply and an unsafe, non-potable supply. Principle No. 14. Adequate protection shall be provided to prevent possible backflow or back siphonage of an unsafe or potentially hazardous fluid or material into a safe water system. Principle No. 15. The piping and connections of the plumbing system shall be durable materials, free from defects in workmanship or materials and designed and constructed to provide adequate service for a reasonable life, including structural loading, temperature variations, vibration and other conditions. Principle No. 16. Devices for heating and storing water shall be designed and installed to prevent all danger from overheating_.and explosion and to pre- vent undue flow of hot water or steam into the cold water supply pipes. Principle No. 17. Refrigerations, coolers, receptacles, sterilizers, • vats, and similar equipment used for storage or holding foods, beverages, sterile goods and water conditioning equipment, etc. , shall discharge into the building drainage system through an indirect waste. Principle No. 18. Water closets, baths, showers, urinals, and similar fixtures shall be suitably enclosed and screened for privacy. Principle No. 19. Plumbing systems, including fixtures, shall be main- tained sanitary and properly usable. Principle No. 20. Sewage and wastes from plumbing and drainage systems shall be adequately treated and disposed in accordance with the requirements of the administrative authority having jurisdiction. • 2 - 2 CHAPTER III DEFINITIONS 301 - General 301.1 For the purpose of this Code, the following terms shall have the mean- ing indicated in this chapter. 301.2 - No attempt is made to define ordinary words which are used in accordance with their established dictionary meaning except where the word has been loosely used and it is necessary to define its meaning as used in this Code to avoid misunderstanding. 301.3 Because the primary purpose is to define terms rather than words, the definitions are arranged alphabetically according to the first word of the term rather than the noun. 302 - Definition of Terms. Administrative Authority. See Plumbing Inspector. Air Gap. An air gap in a water-supply system is the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood-level rim of the receptacle. • Anchors. See supports. Approved. Approved means accepted or acceptable under an applicable speci- fication stated or cited in this Code, or accepted as suitable for the proposed use under procedures and powers of the Plumbing Inspector. Area Drain. An area drain is a receptacle designed to collect surface or rain water from an open area. Backflow. Backflow is the flow of water or other liquids, mixtures, or sub- stances into the districuting pipes of a. potable supply of water from any source or sources other than its intended source. (See back-siphonage) Backflow Connection. Backflow connection or condition is any arrangement whereby backflow can occur. Backflow Preventer. A backflow preventer is a device or means to prevent back- flow into the potable water system. Back-Siphonage. Back-siphonage is the flowing back of used, contaminated, or polluted water from a plumbing fixture or vessel into a water-supply pipe due to a negative pressure in such pipe. (See backflow.) Battery of Fixtures. A battery of fixtures is any group of two or more similar adjacent fixtures which discharge into a common horizontal waste or soil branch. Boiler Blow-Off. A boiler blow-off is an outlet on a boiler to permit emptying or discharge of sediment. 3 - 1 Branch. A branch is any part of the piping system other than a main, riser, or stack. Branch Fixture. See fixture branch. Branch Horizontal. See Horizontal branch. Branch Interval. A branch interval is a length of soil or waste stack corre- sponding in general to a story height, but in no case less than 8 feet within which the horizontal branches from one floor or story of a building are connected to the stack. Branch Vent. A branch vent is a vent connecting one or more individual vents with a vent stack or stack vent. Building. A building is a structure built, erected, and framed of component structural parts designed for the housing, shelter, enclosure, or support of persons, animals, or property of any kind. Building Classification. Building classification is the arrangement in the Building Code for the designation of buildings in classes based upon their use of occupancy. Building Drain. The building (house) drain is that part of the lowest piping of a drainage system which receives the discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building (house) sewer beginning 10 feet outside the building wall. A cleanout shall • be installed at that point and extended to finish grade. Building Sewer. The building (house) . sewer is that part of the horizontal piping of a drainage system which extends from the end of the building drain and which receives the discharge of the building drain and conveys it to a public sewer, private sewer, individual sewage-disposal system, or other point of disposal. Building Storm Drain. A building (house) storm drain is a building drain used for conveying rain water, surface water, ground water, sub-surface water, condensate, cooling water, or other similar discharge to a building storm sewer or a combined building sewer, extending to a point not less than 10 feet out- side the building wall. Building Storm Sewer. A building (house) storm sewer is the extension from the building storm drain to the public storm sewer, combined sewer, or other point of disposal. Building Subdrain. A building (house) subdrain is that portion of a drainage system which cannot drain by gravity into the building sewer. Building Trap. A building (house) trap is a device, fitting, or assembly of fittings installed in the building drain to prevent circulation of air between the drainage system of the building and the building sewer. Circuit Vent. A circuit vent is a branch vent that serves two or more traps and extends from in front of the last fixture connection of a horizontal branch to the vent stack. 3 - 2 Code. The word "Code" when used alone shall mean these regulations, subsequent amendments thereto, or any emergency rule or regulation which the Plumbing Inspector having jurisdiction may lawfully adopt. Combination Fixture. A combination dixture is a fixture combining one sink and tray or a two or three-compartment sink or tray in one unit. Combined Building Sewer. A combined building sewer receives storm water and sewage. Combination Waste and Vent System. A combination waste and vent system is a specifically designed system of waste piping embodying the horizontal wet venting of one or more sinks or floor drains by means of a common waste and vent pipe adequately sized to provide free movement of air above the flow line of the drain. Common Vent. A common vent is a vent connecting at the junction of two fixture drains and serving as a vent for both fixtures. Conductor. See Leader. Continuous Vent. A continuous vent is a vertical vent that is a continuation of the drain to which it connects. Continuous Waste. A continuous waste is a drain from two or three fixtures connected to a single trap. Cross-Connection. A cross-connection is any physical connection or arrangement between, two otherwise separate piping systems, one of which contains potable water and the other water of unknown or questionable safety, whereby water may flow from one system to the other, the direction of flow depending on the pressure differential between the two systems. (See Backflow and Back Siphonage.) Dead End. A dead end is a branch leading from a soil waste, or vent pipe, building drain, or building sewer, which is terminated at a developed distance of 2 feet or more by means of a plug or other closed fitting. Developed Length. The developed length of a pipe is its length along the center line of the pipe and fittings. Diameter. Unless specifically stated, the term "diameter" is the nominal diameter as designated commercially. Double Offset. A double offset is two changes of direction installed in suc- cession or series in continuous pipe. Downspout. See leader. Drain. A drain is any pipe which carries waste water or waterborne wastes in a building drainage system. Drainage Piping. See Drainage System, Drainage System. A drainage system (drainage piping) includes all the piping within public or private premises, which conveys sewage, rain water, or other 3 - 3 liquid waste to a legal point of disposal, but does not include the mains of a public sewer system or private or public sewage-treatment or disposal plant. • Dual Vent. See Common Vent. Durham System. Durham system is a term used to describe soil or waste systems where all piping is of threaded pipe, tubing, or other such rigid construction, using recessed drainage fittings to correspond to the types of piping. Effective Opening. The effective opening is the minimum cross-sectional area at the point of water-supply discharge, measured or expressed in terms of (1) diameter of a circle, (2) if the opening is not circular, the diameter of a circle of equivalent cross-sectional area. (This is applicable to air gap.) Existing Work. Existing work is a plumbing system or any part thereof which has been installed prior to the effective date of this Code. Fixture Branch. A fixture branch is a pipe connecting several fixtures. Fixture Drain. A fixture drain is the drain from the trap of a fixture to the junction of that drain with any other drain pipe. Fixture Supply. A fixture supply is a water-supply pipe connecting the fixture with the fixture branch. Fixture Unit. A fixture unit is a quantity in terms of which the load-pro- ducing effects on the plumbing system of different kinds of plumbing fixtures • are expressed on some arbitrarily chosen scale. Fixture-Unit Flow Rate. Fixture-unit flow rate is the total discharge flow in gpm"of a single fixture divided by 7.5 which provides the flow rate of that particular plumbing fixture as a unit of flow. Fixtures are rated as multiples of this unit of flow. Flood-Level. See Flooded. Flood-Level Rim. The flood-level rim is the top edge of the receptacle from which water overflows. Flooded. A fixture is flooded when the liquid therein rises to the flood- level rim. Flush Valves. A flush valve is a device located at the bottom of the tank for the purpose of flushing water closets and similar fixtures. Flushometer Valve. A flushometer valve is a device which discharges a pre- determined quantity of water to fixture for flushing_purposes and is actuated by direct water pressure. Frostproof Closet. A frostproof closet is a hopper that has no water in the bowl and has the trap and the control valve for its water supply installed below the frost line. • Grade. Grade is the slope or fall of a line of pipe in reference to a hori- zontal plane. In drainage it is usually expressed as the fall in a fraction of an inch per foot length of pipe. 3 - 4 Grease Interceptor. See Interceptor. 4111k Grease Trap. See Interceptor. Hangers. See Supports Horizontal Branch. A horizontal branch is a drain pipe extending laterally from a soil or waste stack or building drain, with or without vertical sections or branches, which receives the discharge from one or more fixture drains and conducts itto the soil or waste stack or to the building (house) drain. Horizontal Pipe. Horizontal pipe means any pipe or fitting which makes an angle of mote than 45 deg. with the vertical. House Drain. See Building Drain House Sewer. See Building Sewer. House Trap. See Building Trap. Indirect Waste Pipe. An indirect waste pipe is a pipe that does not connect directly with the drainage system but conveys liquid wastes by discharging into a plumbing fixture or receptacle which is directly connected to the drainage system. Individual Vent. An individual vent is a pipe installed to vent a fixture trap and which connects with the vent system above the fixture served or • terminates in the open air. Industrial Wastes. Industrial wastes are liquid wastes resulting from the processes employed in industrial establishments and are free of fecal matter. Insanitary. Contrary to sanitary principles - injurious to health. Interceptor. An interceptor is a device designed and installed so as to separate and retain deleterious, hazardous, or undesirable matter from normal wastes and permit normal sewage or liquid wastes to discharge into the disposal terminal by gravity, Journeyman Plumber. A Journeyman Plumber is a person who performs the manual work of installing plumbing under the direction of a Master Plumber. Leader. A leader (downspout) is the water conductor from the roof to the building storm drain, combined building sewer, or other means of disposal. Liquid Waste. Liquid waste is the discharge from any fixture, appliance, or appurtenances, in connection with a plumbing system which does not receive fecal matter. Load Factor. Load factor is the percentage of the total connected fixture unit flow rate which is likely to occur at any point in the drainage system. It varies with the type of occupancy, the total flow unit above this point being • considered, and with the probability factor of simultaneous use. Local Governing Body A city, county, state, state agency or other polotical • 3 - 5 government subdivision or entity authorized to administer and enforce the provisions of the Plumbing Code as adopted or amended. Local Ventilating Pipe. A local ventilating pipe is a pipe on the fixture side of the trap through which vapor or foul air is removed from a room or fixture. Loop Vent. A loop vent is the same as a circuit vent except that it loops back and connects with a stack vent instead of a vent stack. Main. The main of any system of continuous piping is the principal artery of the system, to which branches may be connected. Main Vent. The main vent is the principal artery of the venting system, to which vent branches may be connected. Master Plumbing. A Master. Plumber is a person who assumes responsible charge and direction of other persons in the installation of plumbing. May. The work "may" is a permissive term. Nuisance. The word "nuisance" embraces public nuisance as known at common law or in equity jurisprudence; and whatever is dangerous to human life or detrimental to health; whatever building, structure, or premises is not sufficiently venti- lated, sewered, drained, cleaned, or lighted, in reference to its intended or actual use; and whatever renders the air or human food or drink or water supply unwholesome, are also severally, in contemplation of this Code, nuisance. • Offset. An offset in a line of piping is a combination of elbows or bends which brings one section of the pipe out of line but into a line parallel with the other section. Person. Person is a natural person, his heirs, executors, administrators, or assigns; and includes a firm, partnership or corporation, its or their suc- cessors or assigns. Singular includes plural; male includes female. Pitch. See Grade. Plumbing. Plumbing is the practice, materials, and fixtures used in the installations, maintenance, extension, and alteration of all piping, fixtures, appliances, and appurtenances in connection with any of the following: sanitary drainage or storm drainage facilities, the venting system and the public or private water-supply systems, within or adjacent to any building, structure, or conveyance; also the practice and materials used in the instal- lation, maintenance, extension, or alteration of storm-water, liquid-waste, or sewerage, and water-supply systems of any premises to their connection r other acceptable any point of public disposal table terminal.s p Plumbing Fixtures. Plumbing fixtures are installed receptacles, devices, or appliances which are supplied with water or which receive or discharge liquids or liquid-borne wastes, with or without discharge into the drainage system with which they may be directly or indirectly connected. The Plumbing Inspector. The Plumbing Inspector is the individual official, board, department, or agency established and authorized by a state, county, city or other political subdivision created by law to administer and enforce the provisions of the plumbing code as adopted or amended. 3 - 6 Plumbing System. The plumbing system includes the water-supply and distribution pipes; plumbing fixtures and traps; soil, waste. and vent pipes; building drains and building sewers including their respective connections, devices, and appurtenances within the property lines of the premises, and water-treating or water-using equipment. Pool. A pool is a water receptacle used for swimming or as a plunge or other bath, designed to accommodate more than one bather at a time. Potable Water. Potable water is water which is satisfactory for drinking, culinary, and domestic purposes, and meets the requirements of the Health Authority having jurisdiction. Private or Private Use. In the classification of plumbing fixtures, private applies to fixtures in residences or apartments and to fixtures in private bathrooms of hotels and similar installations where the fixtures are intended for the use of a family or an individual. Private Sewer. A private sewer is a sewer privately owned and not directly controlled by public authority. Public or Public Use. In the classification of plumbing fixtures, public applies to fixtures in general toilet rooms of schools, gymnasiums, hotels, railroad stations, public buildings, bars, public comfort stations, and other installations (whether pay or free) where a number of fixtures are installed so that their use is similarly unrestricted. Public Official. See the Plumbing Inspector. • Public Sewer. A public sewer is a common sewer directly controlled by public authority. Relief Vent. A relief vent is a vent the primary function of which is to provide circulation of air between drainage and vent systems. Return Offset. A return offset is a double offset installed so as to return the pipe to its original alignment. Revent Pipe. A revent pipe (sometimes called an individual vent) is that part of a vent pipe line which connects directly with an individual waste or group of wastes, underneath or back of the fixture and extends either to the main or branch vent pipe. Rim. A rim is an unobstructed open edge of a fixture, Riser. A riser is a water-supply pipe which extends vertically one full story or more to convey water to branches or fixtures. Roof Drain. A roof drain is a drain installed to receive water collecting on the surface of a roof and to discharge it into the leader (downspout) . Roughing-In. Roughing-in is the installation of all parts of the plumbing system which can be completed prior to the installation of fixtures. This includes drainage, water-supply, and vent piping, and the necessary fixture supports. Sand Interceptor. See Interceptor. 3 - 7 Sanitary Sewer. A sanitary sewer is a pipe which carries sewage and excludes storm, surface, and ground water. Second Hand. Second hand as applied to material or plumbing equipment is that which has been installed, and has been used, removed, and passed to another ownership or possession. Separator. See Interceptor. Septic Tank. A septic tank is a watertight receptacle which receives the dis- charge of a drainage system or part thereof, and is designed and constructed so as to separate solids from the liquid, digest organic matter through a period of detention, and allow the liquids to discharge into the soil outside of the tank through a system of open-joint or perforated piping, or disposal pit. Sewage. Sewage is any liquid waste containing animal or vegetable matter in suspension or solution, and may include liquids containing chemicals is solution. Shall. The word "shall" is a mandatory term. Side Vent. A side vent is a vent connecting to the drain pipe through a fitting at an angle not greater than 45 deg. to the vertical. Size of Pipe and Tubing. See Diameter. Slope. See Grade. Soil Pipe. A soil pipe is any pipe which conveys the discharge of water closets or fixtures having similar functions, with or without the discharge from other fixtures, to the building drain or building sewer. Soil Vent. See Stack Vent. Special Waste Pipe. See Chapter 9. Stack. A stack is the vertical main of a system of soil, waste, or vent piping. Stack Group. Stack group is a term applied to the location of fixtures in relation to the stack so that by means of proper fittings, vents may be reduced to a minimum. Stack Vent. A stack vent (sometimes called a waste vent or soil vent) is the extension of a soil or waste stack above the highest horizontal drain connected to the stack. Stack Venting. Stack venting is a method of venting a fixture or fixtures through the soil or waste stack. Storm Drain. See Building Storm Drain. Storm Sewer. A storm sewer is a sewer used for conveying rain water, surface water, condensate, cooling water, or similar liquid Bastes. Subsoil Drain. A subsoil drain is a drain which receives only subsurface or seepage water and conveys it to a place of disposal. 3 - 8 Sump. A sump is a tank or pit which receives sewage or liquid waste, located below the normal grade of the gravity, system and which must be emptied by • mechanical means. Supports. Supports, hangers, and anchors are devices for supporting and securing pipe and fixtures to walls, ceilings,-floors,_or_structural members. Trap. A trap is a fitting or_ device so designed and constructed as to provide, when properly vented, a liquid seal which will prevent the back passage of air without materially affecting the flow of sewage or waste water through it. Trap Seal. The trap seal is the maximum-vertical depth of liquid that a trap will retain, measured between the crown weir and the top of the dip of the trap. Vacuum Breaker. See backflow Preventer. Vent Pipe. - See Vent System. Vent Stack. A vent stack is a-vertical vent pipe installed primarily for the purpose of providing circulation of air to and from any part of the drainage system. Vent System. A vent system is-a_pipe_ or pipes installed to provide a flow of air to or from a drainage system: or to provide a circulation of air within such system to protect trap seals from siphonage- and- back pressure. Vertical Pipe. A vertical pipe is any pipe or fitting which is installed in a vertical position or which makes an angle of not more than 45 deg. with the vertical. Waste. See Liquid Waste and Industrial Wastes. Waste Pipe. A waste pipe is a.-pipe-which conveys only liquid waste, free of fecal matter. Water Distribution Pipe. A water-distribution pipe in a building or premises is a pipe which conveys water from the-water-service pipe-to the plumbing fixtures and other water outlets. Water Main. The water (street) main_ is a water-supply_pipe for public or community use. Water Outlet. A water outlet, as used_ in connection with the water-distributing system is the discharge openingf or. the. water (1) to a fixture; (2) to atmos- pheric pressure (except into an open tank which is part-of- the water-supply system) ; (3) to a boiler or heating system; (4)-to-any-water-operated device or equipment requiring water to operate, but not a part of the plumbing system. Water Riser Pipe. See Riser. Water Service Pipe. The water-service pipe is the pipe from the water main or other source of water supply to the building served. • 3 - 9 Water Supply System. The water-supply system of a building or premises consists of the water-service pipe, the water--distributing pipes, and the necessary connecting pipes, fittings, control valves, and all appurtenances in or adjacent to the building or premises. Wet Vent. A wet vent is a vent which receives the discharge_from wastes other than water closets. Yoke Vent. A yoke vent is_ a-pipe_connecting upward- from_a- soil. or waste stack to a vent stack for the purpose-of:_preventing pressure-changes_ in the stacks. • li 3 - 10 l _ CHAPTER IV • GENERAL REGULATIONS. 401 Conformance with Code. 401.1 (a) All plumbing systems hereafter_ installed_shall conform at least with the provisions of this Code. (b) All materials shall be_ installed according to the manufacturer's recommendations. All pipe and fittings shall bear. the-manufacturer's name or trade mark. 402 Grade or Horizontal Drainage Piping. 402.1 Horizontal drainage piping shall be run in practical alignment at a uni- form grade. _ (See Chapter.XIII for specific. slopes.) 403 Change in Direction. 403.1 Fittings. Changes in direction_in- drainage piping shall be made by the appropriate use of 45-degree wyes, long-or-short-sweep-quarter bends, sixth, eighth, or sixteenth bends, or by a combination of these or equivalent fittings. Single • and double sanitary tees and quarter bends may be used in drainage lines only where the direction of flow is from the horizontal to the vertical. 403.2 Short Sweeps. Short sweeps not less. than 3 inches in diameter may be used in soil and waste lines where the change in direction of flow is from either the horizontal to the vertical or from the vertical to the horizontal, and may be used for making necessary offsets between the ceiling and the next floor above. 404 Fittings. and Connections. 404.1 Fittings Prohibited. No fitting having a hub in the direction opposite to flow, or tee branch shall be used as a drainage fitting. .. No running threads, bands, or saddles shall be used in the drainage .system. No drainage or vent piping shall be drilled or tapped. 404.2 Heel or Side-Inlet Bend. A heel of side-inlet quarter bend shall not be used as a vent when the inlet is placed in a horizontal position. 404.3 Obstruction to Flow. • No fitting or connection which offers abnormal_obstruction to flow shall be permitted. See par. 607. 4 - 1 405. Repairs and Alterations. • 405.1 Existing Buildings. In existing buildings or _premises_in which plumbing_installations are to be altered, repaired, or renovated, necessary deviations from the provision of this Code may be permitted, provided such deviations conform to the intent of the Code and are approved in writing._by the Plumbing Inspector. 405.2 Health or Safety. Wherever compliance with all the provisions of. this Code fails to elimi- nate or alleviate a nuisance which may involve health or safety hazards, the owner or his agent shall install such additional plumbing or drainage equip- ment as may be necessary to abate such nuisance. 406 Sewer and Water Pipes. 406.1 Water service pipes, _or_any underground water pipes, shall not be run or laid in the same trench as the building sewer or drainage piping, except as provided for in Chapters XII and XIII. 407. Trenching, Excavation_ and Backfill. 407.1 Support of Piping. • Buried piping shall be supported_throughout. its entire length. 407.2 Tunneling and Driving. Tunneling may be done in yards, courts, or driveways of any building site. When pipes are driven, the drive pipe shall be at least one size larger than the pipe to be laid. 407.3 Open Trenches. All excavations required to be made for, the .installation_of a building- drainage system, or any part thereof within the walls of .a building, shall be open trench work and shall be kept open until the piping_has been inspected, tested, and accepted. 407.4 Mechanical Excavation. When mechanical means of excavation are used, ditch shall be properly graded and tamped to support the load of the pipe installation. 407.5 Backfilling. Adequate precaution shall be taken to insure proper compactness of back- fill around piping without damage to such piping. • 407.6 Backfill Material. Trenches shall be backfilled in thin layers to 12 in. above the top 4 - 2 of the piping with clean earth which shall not contain stones, boulders, cinder- fill, or other materials which would.damage_or.-break. the_piping or cause cor- 411 rosive action. Mechanical devices such as bulldozers, graders, etc. , may then be used to complete backfill grade. Fill shall be properly compacted. 408 Structural Safety. 408.1 In the process of installing or,repairing any part of a plumbing and drainage installation, the finished_floors, walls, ceilings, tile work, or any other part of the building or premises which must be changed_or replaced shall be left in a safe structural condition-.in-accordance with the requirements of the Building Code or as approved by the Plumbing Inspector. 409 Workmanship. 409.1 Workmanship shall_.conform .to- generally accepted_good practice. 410 Protection of Pipes. 410.1 Breakage and Corrosion. Pipes passing under or through walls shall be protected from breakage. Pipes passing through or under cinder or concrete or other corrosive material shall be protected against external corrosion by protective coating, wrapping, or other means which will prevent such corrosion. • 410.2 Cutting or Notching. No structural member shall be weakened or impaired by cutting, notching, or otherwise, except to the extent permitted by the Plumbing or Building Inspector. 410.3 Pipes Through Footings or Foundation Walls, A soil or waste pipe, or building drain passing_under_ a footing or through a foundation wall shall be provided with a relieving arch; or there shall be built into the masonry wall an iron pipe sleeve two pipe__sizes greater than the pipe passing through or as may be approved in writing by the Plumbing Inspector. 410.4 Freezing. No water, soil, or waste pipe shall be installed_ or..permitted outside of a. building or in an exterior.walLunless adequate provision is made to protect such pipe from freezing where necessary. 411 Damage to Drainage.. System.or Public Sewer. 411.1 It shall be unlawful for any person to deposit by any means into the building drainage system or into a public or private sewer any ashes; cinders; • rags; inflammable, poisonous, or explosive liquids; gasses; oils; grease; 4 - 3 or any other material which would..or..could obstruct, damage, ..or overload such system or sewer. 412 Industrial Wastes. 412.1 Wastes detrimental. to. the..public. sewer system or detrimental to the functioning of the sewage-treatment plant shall be treated and disposed of as directed by the Plumbing Inspector._or..other authority having jurisdiction. 413 Sleeves. 413.1 Annular space between. sleeves_and pipes shall be_filled_.or tightly calked with coal tar or asphaltum compound,..lead, or other material found equally effective and approved as such by the Plumbing Inspector. 414 Ratproofing. 414.1 Exterior Openings. All exterior openings provided_.for the passage. of piping shall be . properly sealed-with. snugly fitting_collars of metal or other approved ratproof material..securely fastened into place. 414.2 Interior Openings. r Interior openings_through.walls, floors, and_ceilings_shnll_be ratproofed as found necessary by the.Plumbing Inspector. 415. Used_or Second-Hand Equipment. 415.1 It shall be unlawful to .purchase, _sell, or install used equipment or material for plumbing installations unless it complies with the minimum standards set forth in this Code. 416 Condemned Equipment. 416.1 Any plumbing equipment_condemned_by the Plumbing. Inspector because of wear, damage, defects, or sanitary hazards shall not be re-used for plumbing purposes. 417. Depth of Building_Sewer_and..Wa ter-Service (Outside_or.Building) . 417.1 No water, soil or waste pipes shall be installed or permitted outside a building or in an exterios_wall_unless._adequate provisions are made to protect such pipes from freezing and shall not be placed above frost line without consent of the Governing Official. 418 Piping in Relation to Footings. 418.1 Parallel. No piping shall be laid parallel to footings or outside bearing walls 4 - 4 closer than 3 feet, except_as-may be approved by the_Plumbing Inspector. i 418.2 Depth Piping installed deeper_than footings or bearing walls shall be 45 deg. therefrom_except.. as may be approved_by the_.Plumbing Inspector. 419 Drainage. Below Sewer Level. . 419.1 Drainage. piping located below the level of the sewer shall be installed as provided for in Chapters XIII and XV. 420 Connections to Plumbing_ System Required. 420.1 All plumbing fixtures, drains, appurtenances, and appliances used to receive or discharge liquid wastes or sewage shall be connected properly to the drainage system of the building or premises, in accordance with the require- ments of this Code. 421 Sewer Required. 421.1 Every building in which plumbing fixtures are installed shall have a connection to a. public or private sewer except as provided in paragraph 422.1. 0 422 Individual or Private Sewage-Disposal System. 422.1 When a public sewer_is_not available within 300 feet of the property line for use, sewage and. drainage. piping..shall, be connected_to an individual sewage- disposal system fround to be adequate and approved by the Plumbing Inspector. 423 Location of Fixtures. 423.1 Light and Ventilation. (a) All plumbing fixtures., except drinking fountains., single lavatories and kitchen sinks, shall be located_ in compartments or rooms provided with windows of not less than three_ (3) sq. ft. area. To provide.. a minimum of at least two (2) cubic feet of fresh air_per minute_per square foot of floor area, or provided with a system of mechanical_or gravity ventilation capable of exhausting forth (40)..cubic_feet of air per minute_per water closet or urinal in public bath or rest rooms and not less than twenty-five (25) cubic feet per minute in private bath rooms, but_in_ no case shall_the fresh air supply be less than specified above, (b) Bath, toilet or rest room shall not open directly into a kitchen or room used for the preparation of food. 423.2 Improper Location. Piping, fixtures, or equipment shall not be located in such a manner as to interfere with the normal operation of windows, doors, or other exit openings. 4 - 5 424 Piping Measurements. 424.1 Except.where-otherwise specified in this Code all measurements between pipes or between pipes and walls, etc., shall be made_to. the center lines of the pipes. 425 Venting. 425.1 The drainage system shall.be_ provided_with a_system_of vent piping which will permit the admission or emission of air so -that under no circumstances of normal or intended use shall the seal of any fixture trap be subjected to a pressure differential of more than. 1 inch of water. 426 Ventilation Ducts. 2 4 6.1 Ventilation ducts from washrooms and toilet rooms shall exhaust to the outer air or to an independent system. 427 Water Closet Connections. 427.1 Closet Bends. Three-inch bends_ and stubs may be used on water_ closet and similar connections provided a.4-inch _x- 3 inch flange is installed to receive the • fixture horn. 427.2 Reducing Closet Bends. Four-by-three-inch reducing bends are acceptacle. • 427.3 Materials. On concrete floors_rough_iron_may_be used to_set. water closets. On wood floors lead stubs shall be used where_..base of plumbing_is. set on ground. 427.4 Offset Closet Flanges. Offset closet flanges-shall--be-prohibited,- except-by written approval of the Plumbing Inspector. 428 Dead Ends. 428.1 Soil or waste pipes placed in any building for future use shall be vented, tested, and subjected--to- the same rules in every respect as if intended for immediate use, and all openings closed by screw..plugs, or caulked or soldered. 428.2 • Old house plumbing can be connected with the city sewer only when it is found on inspection by the .Plumbing_Inspector- to_ conform to the standards established by this Code. 4 - 6 429. Toilet..Facilities-for Workmen. • 429.1 Suitable toilet facilities in accordance with- Table. 923.2 shall be pro- vided and maintained in. a.sanitary. condition.. for_.the_use of workmen during construction. 430 Lettering. of Equipment. 430.1 No_person, firm, or corporation shall operate_plumbing__trucks of any kind in the City of Wichita Falls without the person's..or firm!sname.painted in a prominent place on such equipment. 431 Temporary Gas and Water. 431.1 Temporary gas or water service may be given for construction purposes only. No clearance for permanent gas or water service shall_be given to any building or premises until a final inspection_ has been approved_.by the Plumbing Inspector and a certificate of occupancy has been issued by the Building Inspector. 432 Accessory Buildings. 432.1 Accessory buildings at rear of main house may .tie-into same sewer with • main house, if lot is not on a corner. 432.2 Each building on a corner lot shall have a separate house sewer. 432.3 Easement Provision. A house sewer shall not cross another lot unless_ an easement or right- of-way is provided to protect all property owners. III 4 - 7 L CHAPTER V MATERIALS - QUALITY AND WEIGHT • 501 Materials. 501.1 Minimum Standards. The materials listed in this chapter shall conform at least to the standards cited when used in the construction, installation, alteration, or repair of any part of a plumbing and drainage system, except that the Plumbing Inspector shall allow the extension, addition, or relocation of existing soi, waste, or vent pipes with materials of like grade or quality, as permitted in paragraph 405.1. 501.2 Use of Materials. Each material listed in Table_505 shall conform to at least one of the standards cited opposite it. Its use shall be further governed by the require- ments imposed, in other chapters of the Code. Materials not included in the table shall be used only as provided for in paragraph 501.1. Materials shall be free of manufacturing defects or damage, however occasioned, which would, or would tend to, render such materials defective, unsanitary, or otherwise improper to accomplish the purpose of this Code. 501.3 Specifications for Materials. Standard specifications for materials for plumbing installations are listed in Table 505 - products conforming at least to any of the specifications listed for a given material shall be considered acceptable. • NOTE 1. Abbreviations used in Table 505 refer to standards or specifications listed for a given material shall be considered acceptable. ASTM Standards and Tentative. Standards published by the Americal Society for Testing Materials, 1916 Race Street, Philadelphia, Pa. 19103. FS Federal specifications published by the Federal_Specifications Board and obtained from the Superintendent of Documents, Government Printing Office, Washington, D.C. 20234. AWWA Standards and Tentative Standards published by the American Water Works Association, 2 Park Avenue, New York, N.Y. 10016. CS Commercial Standards representing recorded voluntary recommendations of the trade, issued by the United. States Department of Commerce and obtained from the Superintendent of Documents, Government Printing Office, Washington, D.C. 20234. MSS Standards published by. the Manufacturers Standardization Society of the Valve and Fittings Industry, 420 Lexington.Avenue,_New York, N.Y. 10017. NSF National Sanitation Foundation Testing Laboratory, Inc. , School of Public Health, University of Michigan, P.O. Box 1468, Ann Arbor, Michigan 48106. SPR Simplified Practice Recommendations representing recorded recommendations • of the trade and issued by the -U.S. Department of Commerce, Washington, D.C. 20234. USAS United Stated of America Standards Institute (formerly ASA American Standards Association) , 10 East 40th Street, New York, N.Y. 10016. 5 - 1 NOTE 2. ASTM Standards are issued under fixed designations.; the final number indicated the year or original adoption, or in the case-of. revision, the year of_. . last revision. "T" indicates Tentative. In the. "CS" seriesof. standards, also, • the final number indicated the year.of issue. For_Federal__Specifications, the year indicated in Table 505 is that.of the_date. of. issue or that.of the latest revision or amendment. • NOTE 3. All standards and- specifications for materials .are._subject to change. Designations carrying indication of the year of issue may thus become obsolete. Table 505 given the full designations. of. standards current at the time this Code is printed. The latest printed and issued. Standards shall take precedence. NOTE 4. Plastics may be furnished at the option •of the supplier, provided that the plastics are those indicated as suitable for the specific-parts designated in Sections 502, 703, 704 and 909. The term "plastic(s)" hereinafter referred to shall be defined as meaning all or any of the plastics listed in Table 505 and further defined in the table of this section (501.3) . Plastics used shall be.selected from the_table in 501.3 and shall ' meet the physical property requirements listed in this table. Tests for physical • properties and chemical resistance shall be made_ in accordance with the current revisions of standard methods developed.by. the American. Society. for Testing and Materials (ASTM) . See Table 1. Each plastic part must bear the name. (or type) . of plastic used and the manufacturer's name or his trade-mark. i TABLE 1 — PHYSICAL PROPERTY REQUIREMENTS FOR PLASTICS 1 TEST VALUES T 11 Properties Max Fhioro. 11 ATestN • or Units Aretal• Acrylic carbon Nylon Method Min Plastics Plastics Plastics Plastics Impact Strength Ft Lb — (Notched Izod a 73°F) Min j per in 1.0 0.25 2.5 0.8 D-256 • Tensile Strength I @ 73°F Min psi 8,000 8,000 1,700 10,000 D-638 Tensile Modulus — @ 73°F (1) I Min psi 350,000 350,000 50,000 350,000 I D.638 Flexural Modulus @ 73° (1) Min psi 350,000 350,000 50,000 350,000 I D-790 • en Deformation under Load (2001)psi,24 hr,122°F) Max % 0.7 1.5 — 1.5 D-621 w Deflection Temperature: @ 264 psi L Min °F 225 149 — 150 D-648 @ 66 psi 5 I 310 _ - 154 230 _--. 360 Water Absorption , (24 hr Immersion) Max ',-,, 0.3 0.5 0.05 1.5 D-570 Melting Point Min °F 316 300 600 480 D-789 Specific Gravity Max — 139-144 1.20 2.20 1.15 D-792 Chemical Resistance — — (2) (2) (2) (2) ' D-543 Foetnotess--(i) Flier tensile modulus or flexural modulus may he used at the option of the material supplier. • (2) Seven-day immersion at 73°F in any of the chemicals listed below shall not result In more than 3.0% gaIe nor more than 0.5% loss in weight. The physical appearance of the samples tested shall remain unchanged, ae Ineaa ured by comparison with an untreated control sample. 1. 3% Acetic Acid 3. 2% Sodium Carbonate 5. 0.26% Heavy Duty Detergent Solution. 2. 1% Soap Solution 4. 0.25% Sodium Hypochlorite 6. 5% Sodium Hydroldde R 7. Wate •Acetal Plastics shall conform to the physical properties as listed In ASTMrD-2133-61T end Federal Specifies. tions L-P-392 a-61. 5 - 2 501.4 Identification of Materials. • Each length of pipe and each.pipe_ fitting,_trap, . fixture-..and device used in a_plumbing system shall have_ cast,. stamped, or indelibly marked on it the maker's mark or name, the weight,..type,- and classes_ of the product, when such marking is required by the_approved_standard_that applies. 502 Special Materials. 502.1 Lead. See Table 505. Sheet_lead_ shall be not less__than the following: For safe pans - not less than 4 psf. For flashing of vent terminals. .- not less than 3 psf. Lead bends and lead traps shall not be less than 1/8 in. wall thickness. 502.2 Copper. Sheet copper shall be not less than the following: Safe pans - 12 oz. per sq. ft. Vent terminal flashings - 8 oz. per sq. ft. 502.3 Caulking Ferrules. Shall be manufactured from brass and shall be in accordance with the following table: • Pipe Sizes Inches Inside Diameter Length Minimum Weight Inches Inches Each 2 21 41 1 lb. 0 oz. 3 31 41 1 lb. 12 oz. 4 41 41 2 lb. 8 oz. 502.4 Soldering Bushings. Where permitted shall be of red brass in accordance with the following table: Pipe Sizes Minimum Weight Each Inches 11 6 oz. 12 8 oz. 2 14 oz. 21/2 1 lb. 6 oz. 3 2 lb. 0 oz. 4 3 lb. 8 oz. 502.5 Floor Flanges. Floor flanges for water closets or similar fixtures shall be not less then 1/8-inch thick for brass 1-inch thick and not less than 2-inch caulking depth for cast iron or galvanized malleable iron. If of hard lead, they • shall weigh not less than 1 lb. 9 oz. and be composed of lead alloy with not less than 7.75 per cent antimony by weight. 5 - 3 Flanges shall be soldered to lead bends, or shall be caulked, soldered or screwed to other metal. • Closet screws and bolts shall be brass. 502.6 Cleanouts. (a) Cleanouts shall have plugs of brass and shall conform to Federal Specifications WW-P-401. Cleanouts may also have plugs of nylon plastic meeting the material requirements of- Table. I in Section 501.3 Note 4. (b) Plugs may have raised square or countersunk heads. (c) Countersunk heads_ should be used where raised heads may cause a hazard. 502.7 Sediment Baskets, Strainers, Grates. These items in metal can also be made in acetal plastic. 502.8 Shower Diverter Parts. Acetal and nylon plastics are acceptable as alternate materials for these and similar items. 502.9 Faucet Stems and Other Internal Faucet Parts. • Acetal plastic is acceptable as an alternate material_for these and similar items. 502.10 Ball Cocks and Flush Mechanisms. Acetal plastic is. acceptable-as. an alternate material_ for these and similar items. 502.11 Fixture Trim, Handles, Dials. Acrylic and acetal plastics are acceptable as materials for these and similar items. 502.12 Gaskets, Flanges and Seals. Fluorocarbon plastic is acceptable as an alternate material. 502.13 Showerheads. Acetal or nylon plastics may be used as an alternate..material in shower- heads or parts thereof. 502.14 Valve Seats, Flow Regulators, Parts and Similar Items. Acetal or nylon may be used as an alternate material for valve seats, flor regulator devices, and similar items. • 502.15 Shock Arrestors. Acetal may be used as an alternate material for shock arrestors. 5 - 4 503 Alternate Materials and Methods. 503.1 Existing Premises. In existing buildings or premises in which plumbing installations are to be altered, repaired, or renovated, the Plumbing_Inspector. has discretionary power to permit deviation from the provisions.of this Code, provided that such a proposal to deviate is first submitted. for..proper determination in order that , health and safety requirements, as they pertain to_plumbing, .shall be observed. 503.2 Conditional Materials Approval. Certain new materials, fixtures and methods of installation may be used, after approval by the Plumbing Advisory Board, for a conditional approval period of two (2) years and subject to inspection by the Advisory Board for final approval, rejection or extension of conditional approval. 503.3 Evidence of Compliance. The Plumbing Inspector shall require sufficient evidence to enable him to judge whether proposed alternates meet the requirements of. this Code for safety and health. 503.4 Tests. When there is insufficient evidence to substantiate..claims for alternates, the Plumbing Inspector may require tests of compliance as proof to be made by an approved agency at the expense of the applicant. • 503.5 Test Procedure. Tests shall be made in accordance with generally.recognized standards; but in the absence of such standards, the Plumbing. Inspector shall specify the test procedure. 503.6 Repeated Tests. The Plumbing Inspector may require tests to be repeated if, at any time, there is reason to believe that an alternate no longer_conforms to the require- ments on which its approval was based. 504 Approved Materials. 504.1 Periodic Review. The Plumbing Inspector shall periodically, at least once every two years, review the approved list of specifications and standards for materials in Table 505 and in Chapter IX "Plumbing Fixtures" to check the designations, number, etc. , which are used for identification, and if there are later issues shall submit them for their legal adoption. 504.2 Specific Usage. • Each chapter of this Code_ indicates specifically the type of material permitted for the various parts of the plumbing system. The specifications for each of those materials are given. in Table 505. 5 - 5 3� N 1, �k , by Materials and Uses: ,4 ° 44 zy 0 y Q p U p p p q p co•17 o 44 44 yy/ 77777. ?7fl/7 pip �O Cla y Sewer Pipe with Neoprene Seal x x x Concrete Sewer Pipe Neoprene Seal x x Asbestos Cement Pipe Cast-Iron Soil Pipe & Fittings x x x x x x x x x x Cast-Iron No-Hub Pipe & Fittings x xxx x .x x x x x Cast-Iron (Threaded) Pipe x x x x x x x Cast-Iron Water Pipe & Fittings * x Cast-•Iron (Screwed) Fittings x x * x x x Cast-Iron (Drainage) Fittings x xxxx x x x Wrought-Iron Pipe Galvanized *w* x xxxx x Steel Pipe Galvanized c*** x xxxx x Open Hearth Iron Pipe Malleable Iron Fittings Galvanized *** x xxxx x Malleable Drainage Fittings x x x x • Brass Pipe I.P.S. & Screwed Fittings x x x x x xxxx x Copper Pipe I.P.S. x x x x x x x x x x Copper Water Tube (Type K or L, Soft) & Wrought Copper Fittings x x x x Soldered Joint Fittings - Copper, Brass & Bronze x x x x x x Cast Brass Flared Type Fittings x x x x Solder Joint Drainage Pattern Fittings Brass x x x x x x x x..x Copper Tube, Type II Hard x x xlx x x x I x Copper Tube, Type DWV x x x x x x xl 1 1 Copper Tube, Type L Hard x xxx XI x xxxx x Copper Tube, Type K Hard x xxx x x xxx x x Lead Pipe x x x Steel Pipe Cement Lined * Plastic, Pipe (PVC) or UPVC x x x x x x x x x x x x x x Plastic, Pipe (ABS) x x x x x x x x Glass (of Approved Manufacture) x x x Duriron (or equal) ( xrx x * May be used for large size service lines and private distribution systems (3 inches of larger) . ** When used for sanitary vents, shall extend up from a point at least six inches above the flood level of the highest fixture on the stack. 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Cu m t+-)d d Cu u N aa) 0 x Cu) 0-I 1 10-1 O En En H 0 •Cu H O Cu d0 a) C7 Cu a) O 0 p y) O 0 0 0 Cu ›,-1- •H G +-I ca 1-4 U O O to h W p Fq Cl) a H 1-1 u a) Cu 0 0 4-1 1G) H A r-I Ca •• 14 4-1 CO ca CO 4-1 a O v'b E Z N N F1 I u c 1 .7 to 0 U 3 u o 4-1 D .c o > o o emu) 0 a a) a) v •° a� +4 Cu A En Cl) O A Cl) � 0 to q W U c'Ci) H •• z Z Z Z v to t r) CI) U U Co Cl) 1>.1 H w > 0 a In > Z 5 - 10 506 Limitation of Use on Materials Listed in Table 505. 506.1 Plastic Pipe and Fittings. For storm sewers, storm drain pipe and fittings outside the building in one and two-family dwellings only, see Sections 1501.4 and 1502.4. 506.2 Plastic Materials. For uses see Sections 502, 703, 704 and 909 and Table under Note 4 of Section 501.3. 506.3 DWV-Copper Drainage Tube. For above ground drainage waste and vents "Except urinal waste and vents." S 5 - 11 CHAPTER VI JOINTS. AND CONNECTIONS • 601 Tightness. 601.1 Joints and connections in the plumbing system shall be gastight and water- tight for the pressure required:by- test, with the exceptions of those portions of perforated or open-joint, piping_which are installed for the purpose of collecting and conveying ground or seepage water to the underground storm drain. 602 Types of Joints. 602.1 Caulked Joints. Caulked joints for cast-iron bell-and-spigot soil pipe shall be firmly packed with oakum or hemp and filled with molten lead not less than 1-inch deep and not to extend more than 1/8-inch below rim of hub. No paint, varnish, or other coatings shall be permitted on the jointing_material until after the joint has been tested and approved. 602.2 Threaded Joints, Screwed Joints. Threaded joints shall conform to American National Taper Pipe thread, USAS B2.1-1960 or FS GGG-P-351a. All burrs_ shall be removed.. Pipe ends shall be reamed or filled out to size of bore, and all chips shall be removed. Pipe- joint cement and paint shall be used only on male threads. • 602.3 Wipes Joints. Joints in lead pipe or fittings, or between lead_pipe.or fittings and brass or copper pipe, ferrules, solder nipples, or traps, shall be full-wiped joints. Wiped joints shall have an exposed:.surface-on. each side of a joint rot less than 3/4- inch and at least as thick as the material being. jointed. Wall of floor flange- lead-wiped joints shall be..made. "by using a lead-ring..or flange placed behind the joints at wall or floor. Joints between lead_pipe and cast iron, steel, or wrought iron shall be made by means of-a caulking ferrule, soldering nipple, or bushing. 602.4 Soldered, or Sweat Joints. Soldered or sweat joints for tubing shall be made_with approved fittings. Surfaces to be soldered or sweated shall be cleaned bright... The joints shall be properly fluxed and made..with app.roved solder._ . Joints in copper water tubing shall be made by the appropriate use of approved brass: or..wrought copper water fittings, properly sweated or soldered together. 602.5 Flared Joints. Flared joints for soft tempered copper water tube shall be made with fittings meeting approved standards. The tubing shall be expanded with a proper flaring tool. • 602.6 Brazed Joints. Brazed joints shall be made..in accordance with the provisions of Section 6 of the Code of Pressure Piping, USAS B31.1-1955. 6 - 1 602.7 Burned Lead Joints. • Burned (welded) lead joints shall be lapped and the lead_.shall be fused together to form a uniform weld at least as thick as. the. lead being jointed. 602.8 Elastomeric Compression. Gasket Joints for Cast Iron Soil Pipe. (a) A positive-seal one piece_elastomeric compression_ type gasket may be used for joining hub and spigot cast iron soil pipe as an alternate for lead and oakum joints, which is.made-by inserting. an- approved_ gasket in the hub. The inside of the gasket is lubricated and the spigot end of the pipe is pushed into the gasket until seated, thus effecting- a positive seal. (b) Joint for hubless_cast iron soil pipe and fittings shall be made with an approved neoprene gasket and stainless steel retaining sleeve. 603 Use of Joints. 603.1 Clay Sanitary Sewer Pipe. Joints in vitrified clay pipe or between such pipe and metal pipe shall be made as provided in paragraph 602.8. 603.2 Cast Iron Pipe. Joints in cast iron pipe shall be either caulked, screwed, positive- seal. elastomeric compression gasket or. a neoprene gasket and stainless steel retaining sleeve, as provided_ in-Section 602.1; 602.2_and. 602.8 (a) and (b) . • 603.4 Screw Pipe to Cast-Iron. Joints between wrought-iron, steel, brass, or- copper_-pipe,- and cast-iron pipe shall be either caulked or threaded joints made as provided_in paragraphs 602.1 and 602.2 or shall be-made_with approved adapter fittings. 603.5 Lead to Cast-Iron, Wrought-Iron or Steel. Joints between lead and cast-iron, wrought-iron,- or steel, pipe shall be made by means of wiped joints to a caulking ferrule, soldering nipple, or bushing as provided in paragraph 602.3. 603.6 Copper Water Tube. Joints in copper tubing shall. be..made either by. the. appropriate use of approved brass or wrought copper water..fittings, properly sweated or soldered together or by means of approved_compression fittings as provided in para- graphs 602.4 and 602.5. 604 Special Joints. 604.1 Copper Tubing to. Screwed.Pipe Joints. Joints from copper tubing to threaded pipe shall be made by the use of • brass converter fittings. The joint between the copper pipe and the fittings shall be properly sweated or soldered, and the connection between the threaded pipe and the fitting shall be made with a standard pipe size screw joint. 6 - 2 604.2 Welding or Brazing. Brazing or welding-shall be performed in accordance with requirements of • recognized published standards of practice-and by licensed._or otherwise quali- fied mechanics, except when it is determined..by the Plumbing Inspector to be equivalent procedure for the purpose_ of this Code. 604.3 Slip Joints. In drainage and water piping, slip joints may be used only on the inlet side of the trap or in the trap seal, and on the exposed_.fixture supply. 604.4 Expansion Joints. Expansion joints must be accessible and may_be_used where necessary to pro- vide for expansion and contraction of the pipes. 604.5 Ground Joint Brass Connections. Ground joint brass connections which allow adjustment of tubing but pro- vide a rigid joint when made up. shall..not-be-considered as slip joints. 605 Unions (Screwed). 605.1 Drainage System. Unions may be used in the trap seal and on the inlet side of the trap. Unions shall have metal-to-metal seats. 605.2 Water-Supply System. Unions in the water-supply system shall be metal-to-metal with ground seats. 606 Water Closet, Pedestal Urinal., and Trap Standard Service. 606.1 Fixture connections between drainage pipes._and water closets, floor- outlet service sinks,_ pedestal urinals, and earthenware trap standards, shall be made by means of brass, hard-lead, or iron flanges., caulked, soldered, or screwed to the drainage pipe__ The connection shall be bolted,-with an approved gasket or washer or setting compound between the earthen-ware and the con- nection. The floor flange shall be set on an approved firm base. The use of commercial putty or plaster is prohibited. 607 Prohibited Joints and Connections. 607.1 Drainage System. Any fitting or connection which has an enlargement, chamber, or recess with a ledge, shoulder, or reduction of pipe area, that offers an obstruction to flow through the drain, is prohibited. • 607.2 Prohibited Fittings or Connections. (a) No fitting or connection that offers abnormal obstruction to flow, 6 - 3 shall be used The enlargement of a 3-inch closet bend or stub to 4-inches shall not be considered an obstruction. • (b) The drilling, tapping, or welding of building drains, soil, waste, or vent pipes, and the use of saddle_hubs_ or bands, are prohibited in any building in the City of Wichita Falls. (c) No bull-head waste connections shall be used in any waste line, however, where two fixtures with a trap size of not more than 111 inch in diameter are back to back on the same wall, a drainage twin ell may be used. (d) Screw type unions shall not be permitted in waste or vent lines. 608 Waterproofing of Openings. 608.1 Joints at the roof, around vent pipes, shall be made water-tight by the use of lead, copper, galvanized-iron, or other approved_ flashings or flash- ing material. Exterior wall openings shall be made water-tight. 609 Increasers and Reducers. 609.1 Where different sizes of pipes, or pipes and fittings are to be connected, the proper size increasers or reducers or reducing fittings shall be used bet- ween_the two sizes. • • 6 - 4 CHAPTER VII TRAPS AND CLEANOUTS 701 Traps 701.1 Fixture Traps. Plumbing fiztures, excepting those having integral traps, shall be separately trapped by a_water-seal trap, placed as close to the fixture outlet as possible. (a) Provided, that. a combination plumbing fixture may be installed on one trap, if one compartment is not more than 6-inches deeper than the other and the waste outlets are not more than 30-inches apart. (b) Provided, that one trap may be installed for a set of not more than three single-compartment sinks or laundry trays or three lavatories immediately adjacent to each other in the same room, if the waste outlets are not more than 30-inches apart and the trap is centrally located when three compartments are installed. 701.2 Distance of Trap to Fixture. The vertical distance from..the fixture outlet to the trap weir shall not exceed 24-inches. • 702 Type and Size of Traps and. Fixture Drains. 702.1 Trap Size. The size (nominal diameter) of trap fora.given. fixture.shall be suf- ficient to drain the fixture rapidly but in no case less than given in Chapter XIII., Table 1304.2. 702.2 Relation to Fixture Drains. No trap shall be larger than the fixture drain to which it is connected. 702.3 Type of Traps. (a) Fixture traps shall. be- self-cleaning other than integral traps with- out partitions or movable parts, except as specifically approved in other sections of this Code. (b) Slip joints or couplings may be used on the trap inlet or within the trap seal of the trap is metal-to-metal ground joint is used or gasket type joint. (c) A trap integral with the fixture shall have uniform interior and smooth waterway. • 702.4 Drum Traps. (a) Drum traps shall be. limited -to special fixtures designed for drum traps and approved by the Plumbing Inspector. They shall.be_not less than 4-inches in diameter and shall be provided with a water seal of not less then 2-inches. 7 - 1 (b) The trap screw shall be one size less than the trap diameter. 703 General Requirements. • 703.1 Trap Seal. Each fixture trap shall have a.-water seal of not less than 2-inches and not more than 4-inches, except=where_a deeper seal is requiredby. the Plumbing Inspector for special conditions. 703.2 Trap Cleanouts. (a) Each fixture trap, except those cast integral or in combination with fixtures in which the trap seal is readily accessible_ or except when a portion of the trap is readily removable for cleaning purposes, shall have an accessi- ble brass trap screw of ample size protected by this water seal. Nylon plastics may be used as an alternate material. (b) Cleanouts on the seal of a trap shall be made tight with threaded cleanout plug and approved washer. 703.3 Trap.Level and Protection. Traps shall be set true with respect to their water seals and, where necessary, they shall be protected from freezing. 703.4 Traps Underground. • Underground traps, except "P" traps into which floor drains with removable strainers discharge, shall be provided with accessible and removable cleanouts. 703.5 Prohibited Traps. (a) No trap which depends for its seal upon the action of movable parts shall be used. (b) Full "S" or 1 "S''. traps are prohibited. (c) Bell traps are prohibited. (d) Crown-vented traps are prohibited. (e) Baffled or .partitioned, traps_are prohibited. (f) Tubular traps less than 20 gauge. 703.6 rouble Trapping. No fixture shall be double trapped. 704 Pipe Cleanouts 704.1 Material and Design. • The bodies of cleanout ferrules shall conform in thickness to that re- quired for pipe and fittings of the same metal, and extend not less than 1-inch 7 - 2 above the hub. For new work, the cleanout plug shall be of heavy brass not less than 1/8-inch thick and shall be provided with raised nut or recessed socket for removal. Both ferrule and plug shall. have USAS standard tapered pipe threads. Heavy lead plugs may be -used_for repairing--a cleanout where necessary. Nylon plastics may be used as an alternate material. 704.2 Location. Cleanouts shall be not more than 50-feet apart in horizontal drainage lines of 4-inch nominal diameter or less and not more than 100-feet apart for larger pipes. Line cleanouts which may be rodded both ways shall be used whenever possible. 704.3 Underground Drainage. Cleanouts, when installed on an underground drain, shall be extended to or above the finished grade level directly above the place where the cleanout is installed; or may be extended to outside of the building and brought to grade as indicated above. 704.4 Change of Direction. Cleanouts shall be installed at each change of direction of the building drain greater than 45 deg. 704.5 Concealed Piping. Cleanouts on concealed piping shall be extended through and terminate • flush with the finished wall or floor, or brought to.grade. .. Pits or chases may be left in the wall or floor, provided they are of sufficient size to permit removal of the cleanout plug and proper cleaning of the system. 704.6 Base of Stacks. A cleanout shall be provided at or near the foot of each vertical waste or soil stack. For buildings with a floor slab on fill or ground or with less than 18-inch crawl space under the floor, the following will be acceptable in lieu of a cleanout at the base of the stack; the building drain may be extended to the outside of the building and terminated in an accessible clean- out or an accessible cleanout installed in the building drain not more then 5-feet outside the building wall. 704.7 Building Drain Juntion. There shall be a cleanout near the junction of the building drain and building sewer or a cleanout with "Y" branch inside the building wall. See definition of building drain. 704.8 Direction of Flow. Every cleanout shall be installed so that the cleanout opens in a direction opposite to the flow of the drainage_line or at right angle thereto. 704.9 New Fixtures Prohibited. Cleanout plugs shall not be used for the installation of new fixtures 7-3 or floor drains except where approved in writing by the .Plumbing Inspector. 705 Size of Cleanouts. • 705.1 Small Pipes. Cleanouts shall be of the same nominal size as the pipes up to 4-inches and not less than 4-inches_for_larger pipes. 705.2 Large Pipes. For underground piping.over 10-inches, manholes shall be provided and located at each 90-deg. change in direction_ and at intervals of not more than 300-feet. 705.3 Manhole Covers. Cast iron metal covers shall be provided for manholes, minimum weight 275 lbs. 706 Cleanout Clearances 706.1 Large Pipes. Cleanouts of 3-inch or larger pipes shall be so installed...that there is a clearance of not less than 18-inches for the purpose of rodding. 706.2 Small Pipes. • Cleanouts smaller than 3-inches shall be so_installed_that there is a 12-inch clearance for rodding. 706.3 Must be Accessible. Cement, plaster, or any other_permanent finishing_material shall not be placed over a cleanout plug. 706.4 Concealment. Where it is necessary to conceal.a cleanout plug, a covering plate or access door shall be provided which will permit ready,.access to the plug. 7 - 4 CHAPTER VIII INTERCEPTORS - SEPARATORS AND BACKWATER VALVES 801 Interceptors and Separators. 801.1 When Required. Interceptors (including. grease,_oil, and sand_interceptors, etc.) shall be provided when, in the opinion_.of . the..Plumbing_Inspector.,. they_ are necessary - for the proper handling of. liquid__wastes.-containing_grease, flammable wastes, sand and other ingredients harmful._to the building drainage system, the public sewer or sewage-treatment plant or processes. 801.2 Approval. The size, type, and locations of each interceptor or separator shall be approved by the Plumbing Inspector and no wastes other than those requiring treatment or separation shall be discharged into any interceptor. 801.3 Must Have Approval. No grease interceptor shall be hereinafter installed which does not comply, in all respects with the type or model of each size_ thereof approved by the department having jurisdiction. 801.4 Separation. • A mixture of light and heavy_ solids or liquids and solids..having various specific gravities may be treated_ and. .then separated in an interceptor as approved by the Plumbing Inspector, in accordance with paragraph 801.2 802 Grease Interceptors. 802.1 Commercial Buildings. A grease interceptor shall be installed in the waste line leading from sinks, drains, or other fixtures in the following establishments when, in the opinion of the Plumbing Inspector,- a_ hazard exists: restaurants, hotel kitchens or bars, factory cafeterias or restaurants, clubs, or other establish- ments where grease can be introduced into the.drainage.-system in quantities that can affect line stoppage or hinder sewage disposal. 802.2 Residential Units. A grease interceptor is not required for individual dwelling units or any private living quarters. 803 Oil Separators. 803.1 When Required. An oil separator shall be installed in the drainage_system or section of the system where, in the opinion of the Plumbing Inspector,_a hazard exists or where oils or other flammables. can. be. introduced. or. admitted into the drainage 8 - 1 system by accident or otherwise. 804 Sand Interceptors. • 804.1 Commercial Installations. Sand and similar interceptors for heavy solids shall be so designed and located as to be readily accessible for cleaning,_and.shall have a water seal of not less than 14-inches. See Plan. 805 Venting Interceptors. 805.1 Relief Vent. Interceptors shall be so designed that they will not become air bound if closed covers are used. Each interceptor shall be properly vented. 806 Accessibility of Interceptor. 806.1 Each interceptor shall be so installed as to provide ready accessibility to the cover and means for servicing and maintaining the interceptor in working and operating condition. The use-of. ladders or the removal of bulky equipment in order to service interceptors shall constitute a violation of accessibility. 807 Interceptor's Efficiency. 807.1 Flow Rate. • Interceptors shall be rated and approved for their efficiency as directed by the Plumbing Inspector and in accordance with generally accepted practice. 807.2 Approval. No grease interceptor_shall_be approved until it has successfully passed the testing and rating procedure_ set..up_by the Plumbing Inspector. 808 Laundries. 808.1 Interceptors. Commercial laundries shall be equipped with an interceptor having a re- movable wire basket or similar device that will prevent_ strings., rags, buttons, or other materials detrimental to the public sewerage system from passing into the drainage system, 808.2 Intercepting Device. Basket or device shall prevent passage into the drainage system of solids 1/2-inch or larger in size. The basket or device shall be removable for cleaning purposes. 809 Bottling Establishments. • 809.1 Bottling Plants. Bottling plants shall discharge_their process wastes into an interceptor 8 - 2 which will provide for the separation of broken glass_ or. other solids, before discharging liquid wastes into the drainage system. 810 Slaughter Houses. 810.1 Separators. Slaughtering-room drains_ shall..be_equipped with_.separators which shall prevent the discharge_ into the drainage system of feathers, entrails, and other materials likely to clog the drainage system. 810.2 Interceptors. Slaughtering and dressing room drains shall be provided with interceptors approved by the Plumbing Inspector, in accordance with paragraph 801.2. 810.3 Food-Grinder. Wastes may discharge directly to the building drainage system. 811 Commercial Grinders. 811.1 Discharge. Where commercial food-waste grinders are installed., the waste from those units may discharge direct into the building drainage system and not through a grease interceptor. 811.2 Approval. The Plumbing Inspector shall determine where and what .type_of interceptor is required, except that interceptors shall not be required for private living quarters or residential units. 812 Maintenance. 812.1 Cleaning. Interceptors shall be maintained in dfficient operating condition by periodic removal of accumulated grease. 813 Oil Interceptors. 813.1 Where Required. Oil separators shall be installed when required.by the Plumbing Inspector and shall conform to requirements of paragraph 813.2. 813.2 Minimum Dimensions. Oil separators shall have a depth of not less than 2-feet below the invert of the discharge drain. 813.3 Motor Vehicle Storage and Servicing. Interceptors shall have a capacity. of 6 cubic feet where_not more than 8 - 3 three vehicles are serviced_and-one cubic foot in net capacity shall be added for each additional vehicle..up to ten vehicles. ' Where-more.-than ten vehicles are serviced and stored, the Plumbing.. Inspector shall determine the size of • separator required. 813.4 Repair Shops. Where storage facilities--are.-not maintained, as in repair shops, the capacity of the separator shall- be--based-on a net capacity of 1 cubic foot for each 100 square feet of surface to be drained_into-the interceptor with a minimum capacity of 6 cubic feet. 813.5 Special Type Separators. Before installing any special_type separator, a drawing including all pertinent information shall be submitted for approval-of the.Plumbing Inspector, as being in accordance with this Code. 814 Backwater Valves. 814.1 Fixtures Subject to Backflow. The installation of backwater devices shall be in accordance with lawful requirements of the Plumbing Inspector having jurisdiction over the public sewer system. 814.2 Fixture Branches. Backwater valves shall be installed in the branch_ of the building drain which receives only the discharge from_ fixtures located...within such branch and below grade. 814.3 Material. Backwater valves shall have all bearing parts of_bronze_.or. other corrosion- resistant material. 814.4 Backwater Valves. Shall be so constructed as to insure a mechanical seal against backflow. 814.5 Diameter. Backwater valves.,_when fully opened, shall have a capacity not less than that of the pipes in which they are installed. 814.6 Location. Backwater valves shall be so installed as to provide_ ready-accessibility to their working parts. • 8 - 4 CHAPTER IX PLUMBING FIXTURES • 901 General Requirements - Materials. 901.1 Quality of Fixtures. Plumbing fixtures shall be constructed from approved materials, have smooth impervious surfaces, be free from defects._and_concealed fouling surfaces, and, except as permitted. elsewhere. in this Code, shall conform in quality and design to one of the following standards: Vitreous China Plumbing_Fixtures, .NBS Commercial Standard CS 20-63. Enameled Cast-Iron Plumbing._Fixtures, NBS Commercial Standard CS 77-63. Porcelain Enameled Formed_Steel Plumbing. Fixtures, NBS Products Standard PS 5-66. Stainless Steel Plumbing Fixtures (Designed for Residential Use) , NBS Commercial Standard CS 243-62. Plumbing Fixtures (for) Land_Use, Including Fixtures for Medi- cal and Dental Facilities FS WW-P 541 b and Interim amendment 6-1963. GEL-Coated Glass-Fiber Reinforced. Polyester Resin Bathtub Units- USAS Z124.1-67. GEL-Coated Glass-Fiber. Reinforced Polyester Resin Shower Receptor and Shower Stall Units - USAS Z124.2-67. • Trim for Water-Closet Bowls, Tanks and Urinals, NBS Product Standard PS 6-66. Plumbing Fixtures, Fittings, Trim R 227-47. Lavatory and Sink Traps R 21-46. 902 Alternate Materials. 902.1 Materials. Sinks and special fixtures may be made of soapstone, chemical stone-ware, or may be lined with lead, copper-base alloy, nickel-copper alloy, corrosion- resisting steel or other materials especially suited to the use- for which the fixture is intended. 903 Overflow. 903.1 Design. When any fixture is provided with an overflow, the waste shall be so arranged that the standing water.. in the fixture cannot rise in the overflow when the stopper is closed or remain in the overflow when the fixture is empty. 903.2 Connection. The overalow pipe from a fixture shall be connected on the house or inlet side of the fixture trap, except that overflows of flush tanks may discharge into the water closets or urinals served by them, but it shall be unlawful to connect such overflows with any other part of the drainage system. 9 - 1 904 Installation. 904.1 Cleaning. • Plumbing fixtures shall be installed in a manner to afford easy access for cleaning. Where practical, all pipes from fixtures shall be run to the nearest wall. 904.2 Joints. Where fixture comes in contact with wall and floors, the joint shall be watertight. 904.3 Securing Fixtures. Floor-outlet fixtures shall be rigidly secured to floor by screws or bolts. 904.4 Wall-Hung Bowls. Wall-hung water-closet bowls shall be rigidly supported by a concealed metal supporting member so that no strain is transmitted to the closet con- nection. 904.5 Setting. Fixtures shall be set level and in proper alignment with reference to adjacent walls, (See paragraph 606.1) . • 905 Water Supply Protection. 905.1 Supply Fittings. The supply lines or fittings for every plumbing fixture shall be so installed as to prevent .backflow. (See.paragraph 1204.3) . 906 Prohibited Fixtures and Connections. 906.1 Fixtures. Pan, valve, plunger,_offset, washout, latrine, frostproof, and other water closets having an invisible_seal_or an unventilated space or having walls which are not thoroughly washed at each discharge. shall be prohibited. Any water closet which might permit siphonage of the contents of the bowl back into the tank shall be prohibited. 906.2 Connections. Fixtures having concealed slip-joint connections shall be provided with an access panel or utility space so arranged as to make the slip connections accessible..for inspection and repair. 907 Water Closets. • 907.1 Public Use. Water-closet bowls for public use shall be of the elongated type. 9 - 2 907.2 Flushing Device. Water-closet tanks shall.have..a...flushing_..capacity. sufficient to properly flush the water-closet.bowls. with_which.. they. are connected. 907.3 Float Valves. Float valves in lowdown tanks. shall close tight and .provide water to properly refill the trap seal. in the bowl. 907.4 Close-Coupled Tanks. The flush-valve_seat_in close-coupled water,-closet combinations shall be 1-inch or more above.the-rim of the...bowl, .so_that-.the.flush-valve will close even if the closet trapway is clogged; .or any closets with...flush valve seats below the rim of the bowl shall_be so constructed. 907.5 Automatic Flush Valve. Flushometers shall be so_installed that they will be readily accessible for repairing. When the valve is operated, it shall. complete the cycle of operation automatically, _ opening_fully_and closing._positively.under the service pressure. . At each operation the valve shall deliver_water. in sufficient volume and at a rate that will thoroughly flush the fixture--and refill the fixture trap. Means shall be_provided_for regulating_flush-valve flow. Not more than one fixture shall be served by a single flush_valve. Protection against backflow shall be provided as specified in..paragraph 905. • 907.6 Seats. Water closets shall be equipped_.with seats of.smooth non-absorbent material. All seats of water closets. provided for. public use shall be of the open-front type. Integral water-closet seats shall be. of the same material as the fixture. 908 Urinals. 908.1 Automatic Flushing Tank. Tanks flushing more than. one urinal shall be automatic in operation and of sufficient capacity to provide the necessary vol„mP to. flush and properly cleanse all urinals simultaneously. 908.2 Urinals Equipped. with Automatic Flush Valves. Flushometers shall be as prescribed in paragraph 907.5 and...no valve shall be used to flush more than one urinal. 908.3 Trough Urinals. Trough urinals shall be permitted only in places .of_occasional occupancy. They shall be not less than 6-inches..deep and shall. be- furnished.with one-piece backs and have strainers with outlets_at least 1' -inches in diameter. The washdown pipe shall be perforated. so as to flush with an even curtain of water against the back of the urinal. This pipe shall be..securely clamped as high as practicable to the back of the urinal. Trough urinals shall have tanks with 9 - 3 a flushing capacity of not less than 11/2 gallons of.water. for each 2-feet of urinal length. • 908.4 Equivalent Length. Trough urinals shall be figured on the basis_of, one (1) urinal for each 18-inches of length, i.e. 24-in. trough equals 1 urinal. 36-in. trough equals 2 urinals. 48-in. trough equals 2 urinals. 60-in, trough equals 3 urinals. 72-in, trough equals 4 urinals. 908.5 Floor-Type Urinals. Floor-type trough urinals are prohibited. 908.6 Surrounding Materials. Wall and floor space to -a point 1-foot in front of urinal lip and 4-feet above the floor, and at least 1-foot to each side of the urinal shall be lined with non-absorbent material. 909 Strainers and Fixture Outlets. 909.1 All plumbing fixtures, other than water closets and syphon-action wash- ", down or blowout urinals, shall be provided with metal strainers having waterway area complying with paragraph 901.1. Acetal plastic may be used as an alternate material. 910 Lavatories. 910.1 Waste Outlets. Lavatories shall have waste outlets not less. than 11-inches in diameter. Wastes may have open strainers or may be provided with stoppers. 911 Shower Receptors and Compartments. 911.1 Shower. All shower compartments, except those having metal enameled receptors, shall have a lead or copper shower pan._or the equivalent thereof or as determined by the Plumbing Inspector.__ The pan shall turn up on all sides at least 2-inches above finished floor level. Traps shall be so constructed that the pan may be securely fastened to the trap at the seepage entrance making a watertight joint between the pan. and_trap. Shower receptacle waste outlets shall be not less than 2-inches and have removable strainer. 911.2 Construction. • Floors under shower compartments shall be laid on a -smooth -and structur- ally sound base and shall be lined- and_made watertight with sheet lead, copper or other acceptable materials. 9 - 4 911.3 Public or Institutional Showers. • Floor or public shower rooms shall be .drained_,in such. a manner that no waste water from any head will pass over floor.areas occupied by other bathers. 911.4 Walls. • Shower compartments shall have walls constructed_of_ smooth, non-corrosive' and non-absorbent waterproof materials to a.height of_not_less than 6-feet • above the floor. • 911.5 Joints. Built-in tubs with overhead showers shall have waterproofed joints between the tub and waterproof wall. • 912 Sinks. 912.1 Waste Outlets. Sinks shall be provided with waste outlets not. less than llr inches in diameter. Waste outlets may have open_ strainers. or-mav be.nr vi,if.d 4th stoppers. Sirik waste arm shall not be less than 2'.' in diamet 912.2 Food Grinders. Sinks on which a food grinder is. installed shall have a.waste opening • not less than 3%-inches in diameter. 913 Food Waste Grinder Units. 913.1 Separate Connections. Domestic food waste disposal units may be connected_and. trapped sepa- rately from any other fixture or compartment. Units..may have either automatic or hand-operated water-supply control__ (See paragraph 1204). 913.2 Grease Interceptors. No food waste grinder shall. be connected through_a_ grease interceptor. 913.3 Commercial-Type Grinders. Commercial-type_food grinders_shall have an automatic water-supply and shall be provided with not .less_than. a. 2-inch waste line. Each waste shall be trapped and vented as provided_ in other sections of this Code. 914 Drinking Fountains. 914.1 Design and Construction. Drinking fountains shall conform to American Standard_ Specifications for drinking fountains. (USAS Z4.2-1942) . • 914.2 Protection of Water Supply. Stream projectors shall. be so .assembled as to .provide. an orifice ele- 9 - 5 vation as specified by American. Standard Air. Gaps. in..Plumbing_ Systems (USAS A40.4-1942) and American Standard. Backflow_Preventors in_ Plumbing Systems (USAS A40.6-1943) . 915 Floor Drains. 915.1 Floor Drains, Floor drains shall be installed_.in all public toilet rooms, public bath-rooms and public restrooms, walls .and floors_.of_all.mentioned rooms shall be lined with non-absorbent material. to. a height of_ 4 ft. above the floor. 915.2 Traps and Strainers. Floor drains shall have metal_ traps and a minimum..water seal of 3-inches and shall be provided with removable strainers. The open. area of strainer shall be at least two-thirds of. the_cross-section area of the drain line to which it connects. • 915.3 Floor drains shall be of_a size to serve efficiently the purpose for which it is intended, but in no case. less than 2-inches, .except that for commercial buildings, schools, dormitories and institutions, floor drains shall be not less than 3-inches. 916 Dishwashing Machines. • 916.1 Protection. Domestic dishwashing_machines..shall meet requirements in_paragraph 1204.3. 916.2 Separate Trap, Each unit shall be separately_ trapped or discharge_indirectly into a properly trapped and vented fixture. 916.3 Air Gap. Commercial dishwashing machines_ shall be connected_ through an air gap or as provided in Chapter .9 . "Indirect Waste Piping and_ Special Eastes." 916.4 Hot Water. Dishwashing machines_ or .similar.dishwashing equipment not in private living quarters or dwelling units shall be provided with water at 180 deg. F or sterilization, 917 Multiple Wash Sinks 917.1 Circular Type. Each 18-inches of wash sink circumference (circular type) shall be • equivalent to one lavatory. 917.2 Straight-Line Type. Multiple wash sinks of the straight-line type shall have hot and cold 9 - 6 combination spouts not closer than 18-inches from adjacent similar spouts and each spout shall be considered_ the_.equivalent. of..one lavatory. • 918. Garbage-Can Washers. 918.1 Discharge. Garbage-can washers_shall_.not discharge through..a .trap serving any other device or fixture. 918.2 Grease-Interceptors. The discharge from a garbage-can washer shall_be-_connected through a grease interceptor. 918.3 Baskets. The receptacle receiving-the_wash from garbage-cans shall be provided with .a basket or similar device_ to -prevent the discharge of large particles into the building drainage system. 918.4 Connections. Water supply connections shall conform to paragraph 1204.3. 919 Laundry-Trays. 919.1 Waste-Outlets. Each compartment of..a. laundry-tray shall be..provided..with a waste-outlet not less than 1'h-inches in diameter and with a stopper. 919.2 Overflow. Laundry-tray overflows shall conform to the requirements of. paragraph 903.1. 920 Washing Machines for Residences. 920.1 Protection. Domestic washing machines shall meet requirements in Section 1204.3. 920.2 Separate Trap. Each unit shall. be-separately trapped or discharge indirectly into a properly trapped and vented fixture. 921 Special Fixtures and Specialties. 921.1 Water and Drain Connections. Baptistries, ornamental and lily pools, aquaria, ornamental fountain basins and similar constructions when provided with water supplies shall be protected from back-siphonage as required in paragraph 1204.3. 921.2 Approval. Specialties requiring water and waste connections shall be submitted for approval of the Plumbing Inspector. 9 - 7 922 Water Heaters and Hot Water.Storage_Tanks. 922.1 General. (a) Water heater is an appliance for supplying potable hot water for domestic or commercial purpose_ other_than for space heating. Using solid, liquid, gas fuel or electricity for heating the water. (b) All storage tanks and water heaters shall be clearly and indelibly marked showing the allowable safe-working pressure. (c) All gas-fired water heaters and accessories installed for domestic or commercial use shall comply with applicable American. Standards approved or Listing Requirements covering safe operation, substantial_and durable con- struction and acceptable performance. Such compliance may be determined by presence on the hot water heater or accessory of a label of nationally testing Agency* acceptable to the City. of Wichita Falls. See Gas Code for clearances and vents. * The American Gas Association, Inc. , Laboratories are such a nationally recognized testing agency. (d) All electric hot water heaters and accessories installed for domestic or commercial use shall comply with applicable American. Standard approval or requirements covering safe operation, substantial and durable construction and acceptable performance. Such compliance may be determined by the presence on the hot water heater or accessory of a label of a nationally recognized testing Agency* acceptable to the City of Wichita Falls. * Underwriters Laboratories, Inc. , is such a nationally recognized testing agency. 922.2 Location. (a) Water heaters should be so located to provide as short a run of hot water piping to fixtures as possible and accessible to all tenants or maintenance personnel, as the case may be. (b) Water heaters and storage tanks shall be so located and connected that they will be readily accessible._for observation, maintenance, servicing and replacement. 922.3 Prohibited Installations. Water heaters (using solid, liquid or gas fuel) with the exception of those having sealed combustion systems, shall not be installed in bathrooms and bedrooms. However, water heaters of the automatic storage type may be installed as replacement in a bathroom, when specifically authorized by the administrative authority, provided they are properly vented and supplied with adequate combustion air. 922.4 Clearances. Water heaters shall be positioned in relation to combustible con- struction. See Table 811-A and 811-B Southern Standard Building Code. 9 - 8 (a) A shut-off valve shall_be-provided in the cold water_supply to each hot water heater or storage tank and shall_be accessible on the same floor and • within three (3) feet of the heater or tank. (b) The method of connecting.a circulating water heater to the tank shall assure proper circulation of water to be drawn from the tank. 922.5 Safety Devices. All water heaters shall bear the following, or-equal wording on a visible "Decal or Label" by the manufacturer: There shall be installed at time of heater installation a combination temperature and pressure relief valve, selected and located in conformance with USAS Z21.22 listing requirements. . The temperature sensing element must be immersed in the water within the top 6" of the tank. 922.6 Sediment Drains. A suitable water valve or cock, through which sediment may be drawn off or the heater or tank emptied, shall be installed at the bottom of the heater or tank. 922.7 Anti-Syphon Devices, Means acceptable to the administrative authority shall be provided to prevent syphoning of any water heater or tank to which any water heater or • tank is connected. A cold water "dip" tube with a hole at the top or a. vacuum relief valve installed in the cold water supply line above the top_of_ the heater or tank may be accepted for this purpose. 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Cl) 0 w 4-1 H 0 o w � 0 o 41 o w P. c_) x z 9 - 11 CHAPTER X HANGERS AND SUPPORTS 1001 General 1001.1 General Piping in a plumbing system_.shall be installed without.undue strains in stresses and provision shall_be.made- for_expansion, contraction, and structural settlement. 1002 Vertical Piping. 1002.1 Attachment. Vertical piping shall_ be secured-at sufficiently close intervals to keep the pipe in alignment and carry the weight of the_pipe and contents. 1002.2.Cast-Iron Soil Pipe. Cast-iron soil pipe shall be supported at the_base_and at each story level not to exceed 15-feet. 1002.3 Screwed Pipe. Screwed pipe (S.P.S.) shall be supported at the_base_ and. at not less than every other story level not to exceed 30-feet. 1002.4 Copper Tube. Copper tube shall be supported at each story for piping 11-inches and over and at not more than 4-foot intervals for.piping_-lk-inches and smaller. 1002.5 Lead Pipe. Lead pipe shall be..supported_ at..intervals not exceeding 4-feet. 1003 Horizontal Piping. 1003.1 Supports. Horizontal piping. shall. be supported at sufficiently close intervals to keep it in alignment and prevent sagging. 1003.2 Cast-Iron Soil Pipe. Cast iron soil pipe shall be supported at not_more-than. 5-foot intervals. Hangers shall be located as near hubs as possible. 1003.3 Screwed Pipe. Screwed pipe (S.P.S.) shall be supported at approximately 12-foot intervals. 1003.4 Copper Tubing. Copper tubing shall be supported_ at approximately 8-foot intervals. 10 - 1 1003.5 Lead Pipe. Lead pipe shall be supported by strips or otherwise for its entire length In Ground. Piping in the ground shall be laid on a firm bed_. for. its entire length, except where support is otherwise provided which is adequate in the judgement of the Plumbing Inspector. 1004 Hangers and Anchors. 1004.1 Material. Hangers and anchors shall be of metal of sufficient strength to maintain their proportional share of the pipe alignments and prevent rattling. 1004.2 Attachment. Hangers and anchors shall be securely attached to the building construction. 1005 Strains and Stresses. 1005.1 Piping in Concrete. Piping in concrete or masonry walls or footings shall be placed or installed in chases or recesses which will permit access to the piping for repairs or • replacement. 1006 Base of Stacks. 1006.1 Supports. Bases of all soil stacks, waste and vent stacks, shall be supported to the satisfaction of the Plumbing Inspector. 1006.2 Piping Material. Other piping material shall be so anchored as to take the load off the stack at the base. • 10 - 2 CHAPTER XI • INDIRECT WASTE PIPING AND SPECIAL WASTES 1101 Indirect Waste Piping. 1101.1 General. Wastes from the following shall discharge to thebuilding ,drainage system through an air gap serving the indicidual--fixtures,. devices, appliances, or apparatus. 1101.2 Food Handling. Establishments engaged_in. the storage, preparation, selling, serving, processing, or otherwise handling of food shall have the waste piping from all refrigerators, ice boxes, rinse sinks, cooling or refrigerating coils, laundry washers, extractors, steam tables, egg boilers, coffee urns or similar equipment discharge indirectly into. a sink.or- receptor and the waste outlet shall terminate at least 2-inches above the flood rim of such sink or receptor. 1101.3 Commercial Dishwashing Machines. Dishwashing machines, except_ those in private living quarters or dwelling units, shall be indirectly connected. • 1101.4 Interceptor. An interceptor shall be placed_ on the outlet. side_of.the dishwashing machines, or on the discharge side_of the indirect waste receptor. 1101.5 Connection. Indirect waste connections shall be provided for drains, overflows, or relief vents from the water-supply system or air conditioning units. 1101.6 ,Sterile Materials. Appliances, devices, or apparatus such as stills, sterilizers, and similar requiring water and waste connections and used for sterile material shall be indirectly connected_or provided with an air gap between the trap and the appliance. 1101.7 Drips. Appliances, devices, or apparatus not regularly._classes as plumbing fixtures but which have drips or drainage outlets, shall be drained by indirect waste pipes discharging. into_an open receptacle as provided in paragraph 1101.2. 1102 Material and Size. • 1102.1 The material and size of indirect waste pipes shall be in accordance with the provisions of the other sections of this Code applicable to sanitary-drainage piping. 1103 Length. 1103.1 Waste Pipe. Any indirect waste pipe exceeding two-feet in langth shall be trapped. 1103.2 Maximum Length. The maximum length of the indirect waste to vent shall not exceed 15-feet. 1103.3 Cleaning. 11 - 1 Indirect waste piping shall be so installed as. to_permit ready access for flushing and cleansing. 1104 Air Gap or Backflow Preventer. 1104.1 Provision of Air Gap. The air gap between the indirect waste and the building drainage system shall be at least twice the effective diameter of the drain served and shall be as provided in paragraph (a) or (b) ; (a) By extending the indirect waste pipe to an open, accessible slop sink, floor drain, or other suitable fixture which is properly trapped and vented. The indirect waste shall terminate a sufficient distance above the flood level rim of the receiving fixture to provide the required air gap, and shall be installed in accordance with other applicable sections of this Code; or (b) By providing a_ break (air gap) in the main connection on the inlet side of the trap serving the fixture, device, appliance or apparatus. 1105 Receptors. 1105.1 Installations. Waste receptors serving_ indirect waste pipes shall_not be installed in any toilet room, nor in any inaccessible or unventilated_ space such as a closet or storeroom. 1105.2 Cleanout Location. If the indirect waste receptor is set below floor. level, cleanout shall be brought_level-with the floor. 1105.3 Strainers and Baskets. Every indirect waste receptor shall be equipped_either with a readily removable metal basket over which_ all_ indirect-waste_pipe shall discharge, or the indirect waste receptor outlet..shall be equipped with a beehive strainer not less than 4-inches in height. 1105.4 Splashing. All plumbing receptors receiving the discharge of indirect waste pipes, shall be of such shape and capacity as to prevent splashing or flooding. No plumbing fixture which is used_ for_ domestic or culinary_purposes shall be used to receive the discharge of an indirect waste pipe. 1106 Clear Water Wastes. 1106.1 Water lifts, expansion tanks, cooling jackets, sprinkler systems, drip or overflow pans, or similar devices which waste clear water only • shall discharge onto a roof or into the building drainage system through an indirect waste. 11 - 2 1107 Condensers and Sumps. 1107.1 No steam pipe shall_ connect. to any part of a drainage or_plumbing system, nor shall any water above 180_deg... F_be. discharged_ into any part of a drainage system. Such pipes may be indirectly. connected_by discharging_into an inter- . ceptor or into the drainage system. 1108.Drinking Fountains. 1108.1 Drinking fountains.may be..installed_with indirect wastes. 1109. Special Wastes. 1109.1 Acid Waste. Acid and chemical_indirect_waste pipes shall.be_ of_materials unaffected by the discharge or such wastes. 1109.2 Neutralizing Device. In no case shall_ corrosive- liquids, spent acids, or_ other harmful chemi- cals which might create_nozious__or toxic fumes, discharge_into the plumbing system_without being tho.roughly.diluted. or neutralized..by .passing through a properly constructed and acceptable dilution. or neutralizing: device. Such device. shall be automatically provided_with a_ sufficient intake of diluting water or neutralizing medium, so..as to make its contents noninjurious before being discharge into the soil or sewage system. 1110 Swimming Pools. 1110.1 Piping carrying waste water..from swimming_ or .wading,pools including pool.drainage, back wash. fromfilters, water. from scum gutter drains or floor drains which serve walks_around pools,.shall be installed_ as an indirect waste utilizing a circulation pump, _if necessary, when. indirect.waste line is below the sewer grade. • 11 - 3 CHAPTER XII WATER SUPPLY AND DISTRIBUTION • 1201 Quality of Water Supply 1201.1 Potable Water. Potable water is water which is satisfactory for drinking, culinary, and domestic purposes, and meets the requirements cf the Health Authority having jurisdiction. 1201.2 AcceEtablle Sources. Where a public supply of potable water is not available, requirements satisfactory the Governing Authority shall be observed. 1201.3 Non-potable Water. Non-potable water may be used for flushing water closets and urinals and other fixtures not requiring potable water, provided such water shall not be accessible for drinking or culinary purposes. 1202 Color Code. 1202.1 Identification of Piping. All piping conveying non-potable water shall be adequately and durably identified by a distinctive yellow-colored paint so that it is readily dis- tinguished from piping carrying potable water. (See USAS Z53-1-1953 Safety Color. Code for Marking Physical Hazards.) 1203 Water Supply Mandatory. 1203.1 Every building 'n which plumbing fixtures are installed and are for human occupancy or habitation shall be provided with an ample supply of potable water. 1204 Protection of Potable Water Supply. 1204.1 Cross Connections. Potable water supply pining, water discharge outlets, backflow prevention devices or similar equipment shall not be so located as to make possible sub- mergence in any contaminated or polluted liquid or substance. 1204.2 Approval of Devices. Before any device for the prevention of backflow or back-siphonage is installed, it shall have first been certified as meeting the requirements of USAS A40.6-1943 by a recognized testing laboratory acceptable to the Plumbing Inspector. Devices installed in a potable water supply for protection against backflow shall be maintained in good working condition by the person or persons • having control of such devices. The Plumbing Inspector having jurisdiction may inspect such devices and, if found to be defective or inoperative, shall require the replacement thereof. 12 - 1 1204.3 Backflow. • The water-distribution system shall be protected_against backflow. Every water outlet shall be protected from backflow, preferably by having the outlet end from which the water flows spaced. a. distance above the flood-level rim of the receptable into which the water.flows. sufficient to provide a "minimum required air gap" as defined_ in_USAS A40.4-1942. Where it is not possible to provide a minimum air gap,. the water outlet shall be- equipped. with an accessibly located backflow preventer complying with USAS. A40.6-1943, installed on the discharge side of the_manual control valve. 1204.4 Special Devices. Where it is not possible to provide either a minimum air gap or a back- flow preventer, as may be the case in. connection with cooling .jackets, con- densers or other industrial or special appliances, the Plumbing Inspector shall require other approved_means. of protection. 1205 Vacuum Breakers and Air Gaps. 1205.1 Flushometer. Flushometers shall be equipped with an approved.vacuum breaker. The vacuum breaker shall be- installed ln. the discharge..side_of the- flushing valve with the critical level at least 4-inches above the overflow rim of the bowl. 1205.2 Flushing Tanks. • Flushing tanks shall be_ equipped_.with an approved ball-cock.. The ballcock shall be_ installed with the critical level_of. the vacuum breaker at least 1-inch above the full openi.ng_of. the. overflow .pipe. In cases where the ball-cock has no hush tube, the bottom of the water supply inlet- shall be installed at least 1-inch above the full opening_of the. overflow pipe. 1205.3 Trough Urinals, Trough urinals shall be_ equipped_with an approved_vacuum_breaker installed on the discharge side of the last valve and not less than 30-inches above the spray pipes 1205.4 Lawn Sprinklers. Every sprinkler system shall be_ provided with.a master shut-off valve to control the entire..sprinkler system and a 45 degree. seat swing check valve shall be installed immediately ahead of the. master_shut-off. Each system, or part thereof, shall be_ provided with a means of drainage and a back- flow preventor, or preventors, shall be installed not less than six inches above the grade in a protected area. In no case shall_ a check valve be in- stalled so as to cause a closed system in the house piping. . New galvanized steel, copper, plastic, or rubber_ piping may be used_ for sprinkler systems beyond the back-flow preventor. All steel, copper, . and piping -shall be buried not less than 12 inches underground. Rubber sprinkler piping may be buried • 6 inches underground. (See suggested layout plan.) 1205.5 Valve Outlet, Fixtures with hose attachments shall be protected_by an approved backflow 12 - 2 • preventer installed at least six-inches above the highest point of usage and on the discharge side of the valve. 1205.6 Water Supply to Steam and Hot Water Heating Boilers, Heat Exhangers, Etc. A backflow preventive device, which will automatically vent to atmosphere, shall be installed in the water supply line to all steam and hot water space heating boilers and heat exchangers, etc. , being supplied from the potable water system. Such devices shall prevent back-siphonage amd backflow from the heating system into the potable supply lines should the supply pressure in the heating system. Devices shall be constructed of brass or bronze materials with discs and/or diaphragms of silicone rubber capable of withstanding hot water up to 2500 F and which will not stick to their seats after prolonged continuous seating. Devices shall be suitable for use on supply pressures up to 175 psi and shall be capable of working with a back pressure from 1 to 75 psi without leaking or permanent damage or distortion. Devices shall be AGA listed USA Standard Z21.22. !II 1206 Water-Distribution Pipe, Tubing and Fittings. 1206.1 Materials. Material for water supply pipes and tubing shall not be other than brass type L, copper, lead, cast iron, wrought iron, open-hearth iron, plastic or steel, with appropriate approved fittings, except as hereinafter provided. All ferrous pipe and fittings shall be galvanized (zinc-coated) or cement lined. The welding of ferrous supply pipes for potable water is prohibited. No dissimilar metals shall be joined below the ground. Diaelectric fittings will be required where pipe installations of dissimilar materials are joined above the ground. Where the water service is different from the materials used by the City for the water tap, a diaelectric fitting shall be installed at the water meter. 1206.2 Underground. Inaccessible water piping under floor slabs shall be minimum Type 1 copper tube, brass, lead, cast iron, galvanized steel or galvanized wrought iron, except that galvanized steel shall be protected when used under floor slabs in corrosive soils. All ferrous piping and fittings shall be coated with coal tar enamel or other coatings approved for such purpose by a recognized standard organization and the threaded joints shall be coated and wrapped after installation. 1206.3 Service Lines Near Drain or Sewer Line. Except as permitted in paragraph 1206.4, the underground water service pipe and the building drain or building sewer shall be not less than 5-feet apart horizontally and shall be separated by undistrubed or compacted earth. 12 - 3 1206.4 Permitted Installation_Near Drain or Sewer Line. •. The water service pipe may be placed in the same trench with the building drain and building sewer provided the following_ conditions are met: (a) The bottom of the water service pipe, at all points, shall be at least 12-inches above the top of the sewer line at its highest point. (b) The water service pipe shall be placed_ on_ a solid shelf excavated at one side.of the common trench. (c) The water service tube. shall_have a weight of not less than that of copper water tube Type_L.with.soldered joints. 1206.5 Stop-and-Waste Valve Combination. Combination stop-and-waste_valves and cocks shall_not be installed in an underground service pipe. 1206.6 Private Water Supply. No private water supply shall be inter-connected with any public water supply. 1207 Water Pumping and Storage Equipment. 1207.1 Pumps and Other Appliances. • Water pumps, tanks, filters, softeners, and all other appliances and devices shall be protected_against contamination. 1207.2 Water-Supply Tanks. Potable water-supply tanks shall be properly covered_ to prevent the en- trance of foreign material or insects into the water_ supply. Soil or waste lines shall not pass directly over such tanks. 1207.3 Pressure Tanks, Boilers,_and_Relief Valves. The drains from pressure tanks, boilers, relief valves and similar equip- ment shall be connected to the drainage system through an indirect waste. 1207.4 Cleaning, Painting, Repairing.Water. Tanks. A potable water-supply tank_used_for demestic- purposes shall not be lined, painted, or repaired with any material which will affect either the taste or the potability of the water-supply when the tank is returned to service. Tanks shall be disconnected from the system during such operations, to prevent any foreign fluid or substance from entering the distribution piping. 1208 Water-Supply Tanks (House-Suction Booster) . 1208.1 When Required. • When the water pressure from the_city mains during flow is insufficielxt 12 - 4 to supply all fixtures freely and continuously, the rate of supply shall be • supplemented by a gravity house_ tank. or..booster system. 1208.2 Support. All water-supply tanks shall be supported in accordance_with the building code or other regulations which apply. 1208.3 Overflow for Water-Supply Tanks. Overflow pipes for gravity tanks shall discharge- above and. within 6-inches of a roof or catch basin, or.over .an open, water-supplied sink. Adequate overflow pipes properly screened against the entrance of insects and vermin shall be provided. 1208.4 Tank Supply. The water-supply inlet within the tank shall be at an elevation not less then is required for an air gap in an open tank with overflow, but in no case shall the elevation be less than 4-inches above the overflow. 1208.5 Drains. Water-supply tanks shall be provided with valved drain lines located at their lowest point and discharged as an indirect waste or as required for overflow pipes in paragraph 1204.3. • 1208.6 Size of Overflow. Overflow drains for water-supply tanks shall not be less than the following: Drain Pipe Tank Capacity Drain Pipe Tank Capacity (inches) (gallons) (inches) (gallons) 1 . . . . . . .Up to 750 21 3,001 to 5,000 11 . . . . . .751 to 1,500 3 . . . . . . 5,001 to 7,500 2 . . . . . 1,501 to 3,000 4 Over 7,500 Each drain line shall be equipped with a quick opening valve of the same diameter as the pipe. 1208.7 Gravity and Suction Tanks. Tanks used for domestic water supply, combined supply to fire standpipes and domestic water system, or to supply standpipes for fire-fighting equip- ment only, shall be equipped with tight covers which are vermin and rodent proof. Such tanks shall be vented with a return bend vent pipe having an area not less than one-half the area of the down feed riser and the vent opening shall be covered with a metallic screen of not less.. than one hundred (100) mesh. 1208.8 Pressure Tanks. • Pressure tanks used for supplying water to the.domestic_water distribution system, combined supply to fire standpipes and domestic water system, or to supply standpipes for fire equipment only, shall be equipped with an acceptable 12 - 5 vacuum breaking device located on the top of the tank. The air inlet of this device shall be covered with a metallic screen of not less than one hundred (100) mesh. 1209 Disinfection of Potable Water System Piping. 1209.1 Plumbing Inspector May Require. The local Plumbing Inspector having jurisdiction may require that a potable- water system or any part thereof installed or repaired_by disinfected in ac- cordance with one of the-following_methods. before_ it is placed in operation. (a) The system, or part thereof, shall be filled with a solution contain- ing 50 parts per million of available chlorine and allowed to stand 6 hours before flushing and returning to service. (b) The system, or part thereof, shall be filled with_a solution contain- ing 100 parts per million of available chlorine and allowed to stand 2 hours before flushing and returning to service. (c) In the case of a potable-water storage tank where_it is not possible to disinfect as provided in paragraphs 1209.3, the entire interior of the tank shall be swabbed or sprayed with a solution containing 200 parts per million of available chlorine and the solution allowed to stand 2 hours before flushing and returning to service. (d) In the case of potable-water filters or similar devices, the dosage shall be determined by the Plumbing Inspector. 1210 Allowance for Character of Water. 1210.1 Selection of Materials. When selecting the material and size for water-supply pipe, tubing, or fittings due consideration shall be given to the action of the water on the interior and of the soil, fill or other material_on the exterior of the pipe. No material that would. produce-toxic- conditions. in_.a.potable-water supply system shall be used for. piping,_ tubing or fittings. 1210.2 Used Piping. No piping material that has been..used_for other. than a..potable-water supply system shall be-re-used_in_the_.potable-water_supply system. 1211 Water Supply Control. 1211.1 Water Supply Control. A main shut-off valve on the water-service pipe shall be provided near the curb and, also an accessible automatic compression stop and drain shall be provided outside near the entrance_of the water-service pipe into the building. 1211.2 Tank Controls. • Supply lines taken from pressure or gravity tanks shall be valved at or near their source. 12 - 6 1211.3 Separate Controls for Each. Family Unit. In two-family or multiple dwellings, each family-unit shall be controlled • by an arrangement of shut-off valves which permit each._group of fixtures or the individual fixtures to be_shut off without interference with the water- supply to any other family unit_or. portion of the building. 1211.4 Group Fixtures. A group of fixtures means two or more fixtures adjacent or near each other. In a one-family house one.or. two bathrooms adjacent or one over the other may be considered a group. 1211.5 Buildings Other Than Dwellings. In all buildings other than dwellings shut-off valves shall be installed, which permit the water-supply to all equipment in each separate room to be _shut off without interfence with the water-supply to any other room or portion of -the building. 1211.6 Water Heating Equipment. A shut-off valve shall be provided in the cold-water_branch line to each water-storage tank or each water heater. 1212 Water-Supply Distribution. 1212.1 Water-Service Pipe. • The water-service pipe from the street main to. the.water-distribution system for the building shall.be.of_sufficient size to furnish an adequate flow of water to meet the requirements of the building..at peak demand, and in no case shall be less than 3/4-inch nominal diameter. 1212.2 Demand Load. The demand load in the building water-supply system_ shall be based on the number and kind of_ fixtures. installed_and the probable simultaneous use of these fixtures. 1213 Procedure in Sizing_the Water-Distribution System..of a Building. 1213.1 Minimum Size. The sizing of the water-distribution system shall conform to good engi neering practice. All water-supply lines to fixtures_must be adequate in size. See Section 1213.3 for minimum size of fixture-supply pipe and Section 1213.4 for minimum pressure at the fixture outlet and not more than two open- ings on 1/2". 1213.2 Calculation of Size. When required by the Plumbing Inspector, the sizing of the water-distribution • system shall be calculated by a registered mechanical engineer or, other accepta- ble authority. 1213.3 Size of Fixture-Supply. The minimum size of a fixture-supply pipe shall be as follows: 12 - 7 Type of Fixture Pipe Size Type of Fixture Pipe Size or Device (inches) or Device (inches) Bath tubs . Shower (single head). . . � Combination sink and tray . . . . Sinks (Serv. , slop) . . . Drinking Fountain 3/8 Sinks, flushing rim . . .3/4 Dishwasher (domestic) Urinal (flush tank) . 1 Kitchen sink (residential) . . % Urinal (direct flush Kitchen sink, commercial . . . 3/4 valve) . . .3/4 Lavatory 3/8 Water closet (flush Laundry Tray, 1, 2 or 3 valve type) 1 compartments Water closet (tank type) 3/8 Hose Bibbs � Wall Hydrant For fixtures not listed, the minimum supply branch may be made the same as for a comparable fixture. 1213.4 Minimum Pressure. Minimum, fairly constant, service pressure, at the point of outlet dis- charge shall be not less than 8 p.s.i. for all fixtures except for direct flush-valves, for which it shall be not less than 15 p.s.i. , and except where special equipment is used requiring_higher_pressure.. In determining the minimum pressure, allowance shall be made_ for the pressure drop due to friction loss in the piping system during_maximum demand_periods. as well. as head, meter, and other losses in the system. • 1213.5. Auxiliary Pressure, Supplementary Tank. If the residual pressure in the system is below the minimum allowable at the highest water outlet when the flow in the system is at peak demand, an automatically controlled pressure_ tank or gravity..tank shall be installed, of sufficient capacity to supply sections from the public water main. 1213.6 Low Pressure Cut-Off. When a booster pump is used_ on an auxiliary pressure system and the possibility exists that a pressure of 15 p.s.i. or less may occur on the suction side of the pump, there shall be installed a low-pressure cut-off on the booster pump to prevent the creation of negative pressures on the suction side of the water system. Other arrangements may be used if found adequate and if approved as such by the Plumbing Inspector. 1213.7 Variable Street Pressures. When the street main has a wide fluctuation in pressure during the day, the water-distribution system shall be designed for minimum pressure available. 1213.8_Hazard and Noise. Where water pressures are excessive, air chambers or other approved et mechanical devices shall be provided to reduce water hammer or line noises to such an extent that no pressure hazard to the piping system will exist. 12 - 8 1213.9 Water Pressure Valve for Regulators. (a) Where the service water pressure to a building_ is. excessive, an approved water pressure regulator with strainer shall be installed to reduce the pressure to the fixture. Sill cocks and outside hydrants may be left in full main pressure at the option of the owner. The pressure reducing valve shall be set to deliver at a pressure_below.80 pounds per square inch, depend- ing upon the building requirements. (b) All brass castings in continuous contact with water shall conform to ASTM Specifications B62-63, composition bronze or ounce metal castings. All other parts in contact with the water shall be of approved materials suitable for service conditions to which exposed. The reducing_valve seat shall be removable and shall be of nickel..chrome. stainless steel or other approved nickel alloy. (c) Strainer bodies, which are separate from the valve body, may be gray iron castings and reducing valve-bodies in sizes over 2" may be gray iron castings. All gray iron castings must be protected from corrosion by an approved protective coating. (d) The delivery pressure variation shall not be more than 1 psig for every 10 psig pressure change in the inlet pressure. The reduced pressure fall-off from its no flow setting_ shall not exceed 17 psig and with a difference at this point of 50 pounds between the initial and this reduced flow pressure of 50 pounds, the capacity shall be not less than that shown in the table. • (e) Nominal Pipe Size 1" 3/4" 1" 14" 11" 2" Avg. Vel/thru pipe in ft./sec. 10.5 10.0 9.5 9.0 8..5 7.5 flow in GPM 9.95 16.65 25.0 42.0 54.8 77.5 (f) Provision shall be made to permit water on the building side of the reducing valve to .f low back into the main when the..building.pressure exceeds the main supply pressure due to thermal expansion. Reducing valves with built- in by-pass check valves will be acceptable. An integral by-pass check valve shall be capable of opening to permit a reverse flow of water through the reducing valve to_prevent. a build-up of system pressure by thermal expansion of the water with an increase of reduced pressure not exceeding 2 p.s.i. above the prevailing initial pressure. (g) The valve shall be designed_ to remain open to permit uninterrupted water flow in case of valve failure. (h) All regulators and strainers must be so constructed and installed as to permit repair or removal_of parts without breaking a pipe line or re- moving the valve and strainer from the pipe line. 1214 Hot-Water Distribution. 1214.1 Hot-Water Distribution Piping. 12 - 9 The sizing of the hot-water distribution piping-shall- conform to good engineering_practice_ (see:paragraph 1213.1) . • 1214.2 Hot Water Supply. The hot water supply on any fixture requiring hot water shall be installed on the left side of the fixture unless otherwise-specified-by the manufacturer. 1215 Safety Devices. 1215.1 Water Pressure Relief Valves and Temperature-.Relief_Valves Required. All water heaters-shall-be. provided with an approved self-closing (levered) water pressure relief valve and temperature relief valve-or combination thereof. Such valves shall be installed in the shell of the water heater tank or may be installed in the hot water outlet, provided the thermo-bulb extends into the shell of the tank, and in all cases installed at the highest practical point. For installations with separate storage_tank, said-valves shall all be installed on the tank and there shall not be any type of valve installed between the water heater and the storage tank. Where, in the opinion of the Plumbing Inspector, safety valves are required they shall be installed in accordance therewith. 1215.2 Approvals. Temperature and Pressure.Relief Valves, or combination-thereof, shall bear the label of the AGA or ASME, with thermosetting of. not-more than 210 degrees . F. and pressure setting not to_exceed_ the tank or heater manufacturer's rated working pressure. The relieving capacity of these two devices shall equal or exceed the heat in-put to the water heater or storage tank. 1215.3 Relief Valve Location. Temperature relief valves shall be so located in the tank as to be actuated by the water in the top one-eighth of the tank served_and.in no case more than 3-inches away from such tank. Pressure-relief valves may be located adjacent to the equipment they serve. There shall be no check valve between a relief valve and the heater or tank for which it is installed. 1215.4 Relief Outlet Wastes. (a) The outlet of a pressure, temperature, or other relief valve shall not be connected to the drainage system as.a direct waste. The discharge from the valve shall be into an open sight..drain. In residential construction, the discharge from the valve may be extended to the outside of the building en- closure and turned down to within six (6) inches_ of the finished grade. (b) .The discharge pipe shall be of galvanized or copper and shall be the same size as tapping on valve. 1215.5 Pressure Marking of Storage Tank. Any storage tank hereafter installed for domestic hot water shall have • clearly and indelibly stamped in the metal, or so marked upon a plate welded thereto, or otherwise permanently attached, the maximum allowable working 12 - 10 pressure. Such markings shall...be in an accessible._position_ outside of the tank so as to make inspection_or-reinspection- readily_possible. All storage tanks for domestic hot water shall meet the applicable_ASME standards. 1216.Miscellaneous. 1216.1 Drain Cock. All storage tanks shall be_equipped_with adequate drain cocks. 1216.2 Line Valves. Valves in the water-supply distribution system, except- those immediately controlling one fixture supply, when fully opened shall have a cross-sectional area of the nominal size of the pipe in which the valve is installed. 1216.3 Water Used for Processing. Water used for cooling of equipment or similar_.purposes shall not be returned to the potable-water_distributing system. When discharged to the building drainage system, the waste water shall be discharged through an indirect waste pipe or air gap. • 12 - 11 CHAPTER XIII DRAINAGE SYSTEM • 1301 Materials. 1301.1 General. Pipe, tubing, and fittings for drainage systems shall comply with the pro- visions in Chapter V. 1301.2 Specific Type. Standards given in Table 505 apply to the specific materials approved for use and as indicated in various paragraphs in this chapter as they apply to the drainage system. 1301.3 Piping Within Buildings and Piping in Race Ways or Tunnels. Above Ground. (a) Soil and waste piping for drainage system shall be cast iron, plastic, lead, brass or copper pipe, or copper tube. (b) Cast iron soil pipe and fittings for soil, waste or vent lines or building drains when above ground (unless otherwise specified) may be service weight. • c) Plastic pipe shall be limited to and including 3 stories and/or 36 feet in height. (d) Vertical soil, waste and vent stacks shall be designed to control expansion and contraction, in accordance with accepted engineering practice, to the satisfaction of the Administrative Authority. Underground (a) All underground drains within buildings shall be cast iron soil pipe, lead or plastic. For buildings six (6) stories or under in height, the underground pipe may be of service weight cast iron soil pipe or lead. (b) For buildings over six (6) stories in height, the underground pipe may be extra heavy cast iron soil pipe or lead at the discretion of the design engineer. 1301.4 Fittings. Fittings on the drainage system shall conform to the type of piping used. Fittings on screwed pipe shall be of the recessed drainage type. (See Section 404.) 1301.5 Acid Soil and Waste Piping. Acid soil and waste piping for drainage systems shall be of a high silicon cast iron or other materials approved by the Administrative Authority. Fitting shall conform to the type of piping used. Acid soil and waste piping shall not be connected to the conventional plumbing system. 13 - 1 1302 Building Sewer. 1302.1 Separate Trenches. • The building sewer, when installed in a separate trench from the water- service pipe, shall be cast-iron sewer pipe,. vitrified-clay or plastic sewer pipe. Joints shall be water-tight and_rootproof_and-all materials shall be installed according to the manufacturer.`s recommendations. (See Appendix A). All pipe and fittings shall bear the manufacturer's.name or trade mark. 1302.2 Sewer in Filled Ground. A building sewer or.building.drain installed in filled or unstable ground shall_ be of cast-iron pipe, except that nonmetallic_drains may be laid upon an approved concrete pad if installed in accordance with paragraph 1302.1. 1302.3 Sanitary and Storm Sewers. Where separate systems of. sanitary drainage and storm drainage are in- stalled in the same property, the sanitary and storm building sewers or drains may be laid side by side in one trench. 1302.4 Old House Sewers and Drains. Old house sewers and house drains may be used-_in connection with new building or new plumbing and drainage_work only when they are found, on examination and test, to conform_ in all respects- to_ the requirements governing new house sewers, and the Plumbing Inspector shall.notify the owner to make the • changes necessary to conform to this Code. 1302.5 Cleanouts on Building Sewers. Cleanouts on building sewers shall be located as set forth under paragraph 704. 1303 Drainage Piping Installation. _ 13Q3.1 Horizontal Drainage Piping. _ Horizontal drainage piping shall be installed_ at a.uniform slope but at slopes not less than permitted in_paragraphs 1303_.2,_ 1303.3 and 1303.4. 1303.2 Small Piping. Horizontal drainage, piping-of. 3-inch diameter and less. thall be installed with a fall of not less thane-inch per foot. 1303.3 Large Piping. Horizontal drainage piping larger_ than 3-inch diameter shall be installed with a fall of not less than 1/8-inch per foot. 1303.4 Minimum Velocity. • Where conditions do not permit building drains and sewers_ to be laid with a fall as great as that specified, then a lesser clope-may be permitted provided the computed velocity will not be less than 2 fps. 13 - 2 1304 Fixture Units. 1304.1 Values. for Fixtures. Fixture unit values given in Table. 1304.2 designate the relative load weight of different kinds -of. fixtures_which shall be employed in estimating the total load carried by_a_ soil. or waste pipe and shall_be used in connection with the tables of sizes for soil, ..waste, and vent. pipes.for which the per- missible load is given in terms of fixture units. SEE TABLE 1304.2 - FIXTURE UNITS PER FIXTURE OR GROUP. 13 - 3 1304.3 Fixtures Not Listed. Fixtures not listed in Table 1304.2 shall be_ estimated_ in accordance with Table 1304.3. TABLE 1304.3 Fixture Drain or Trap Size Fixture Unit Value 11-inches and smaller 1 11-inches 2 2 -inches 3 21-inches 4 3 -inches 5 4 -inches 6 1304.4 Values for Continuous Flow/ For a continuous or semicontinuous flow into a drainage system, such as from a pump, pump ejector, air-conditioning equipment, or similar device, two fixture units shall be allowed for each- gallon-per-minute of flow. 1305. Determination of Sizes for the Drainage System. 1305.1 Maximum Fixture-Unit Load. The maximum number of fixture units that may be connected to a given size of building sewer, building drain, horizontal branch, or vertical soil • or waste stack is given in Tables 1305.2 and 1305.3. TABLE 1305.2 - BUILDING DRAINS AND SEWERS Maximum number of Fixture-Units that may be connected to any portionl of the building drain or the building Diameter of sewer3. Pipe Fall Per Foot 1/16 Inch 1/8 Inch 1/4 Inch 1/2 Inch INCHES 2 21 26 2% 24 31 3 20 (2) 27 (2) 36 (2) 4 180 216 250 5 390 480 575 6 700 840 1,000 8 1,400 1,600 1,920 2,300 10 2,500 2,900 3,500 4,200 12 3,900 4,600 5,600 6,700 15 7,000 8,300 10,000 12,000 1 Includes branches of the building drain. (2) Not over two water closets. (3) No building sewer shall be less than 4-inches in size. 13 - 5 TABLE 1304.2 - FIXTURE UNITS PER FIXTURE OR GROUP Fixture-Unit Value. Minimum Size of IIIFixture Type as Load Factor Trap2 Inches 1 Bathroom group consisting of water. Tank water closet, lavatory and bathtub closet 6 or shower stall Flush-valve Bathtubl (with or without over water closet 8 head shower) . 2 1% Bathtubl. 3 2 Bidet. 3 Nominal 12 Combination sink and tray. 3 1% Combination sink and tray with food Separate disposal unit. 4 traps 1% Dental unit or cuspidor. 1 114 Dental lavatory 1 14 Drinking fountain z 1 Dishwashing machine2 domestic. 2 1% Floor drains3 1 2 Kitchen sink, domestic. 2 1% Kitchen sink, domestic with food waste grinder. 3 1% Small Lavatory4. 1 P.O. 14 Large Lavatory4. 2 P.O. 12 Lavatory, barber, beauty parlor. 2 1% Lavatory, surgeon's. 2 1% • Laundry tray (1 or 2 compartments) 2 1� Shower stall, domestic. 2 2 Showers (group) per head2. 3 Sinks: Surgeon's. 3 1% Flushing rim (with valve) . 8 3 Service (trap standard) . 3 3 Service (P trap) . 2 2 Pot, Scullery, etc.2. 4 1% Urinal, pedestal, syphon jet, blowout. 8 Nominal 3 Urinal, wall lip. 4 1% Urinal stall, washout. 4 2 Urinal trough2 (each 2-ft. section) . 2 1% Washing machine (residential) . 3 2 Wash sink2 (circular or multiple) each set of faucets. 2 Nominal 1% Water closet, tank-operated. 4 3 Water closet, valve operated. 8 3 1 A shower head over a bathtub does_not increase the fixture value. 2 See pars. 1304.3 and 1304.4 for methods of computing unit value of fixtures not listed in Table 1304.2 or for rating of devices with intermittent flows. 3 Size of floor drain shall be determined by the area of surface water to be drained. 4 Lavatories with 11/4 or 1%-inch trap have the same load value; large P.O. plugs have greater flow rate. • 13 - 4 TABLE 1305.3 - HORIZONTAL FIXTURE BRANCHES AND STACKS Diameter Maximum No. of fixture units that may be connected to: 410 of Pipe Any One Stack of More Than 3 Stories Horizontal (1) 3 Stories in In Height Fixture Height or 3 Total at One Branch Intervals Total for Story or Branch Stack Interval Inches 11 1 2 2 1 11 3 4 8 2 2 6 10 24 6 21 12 20 42 9 3 20 (2) 30 (3) 60 (3) 16 (2) 4 160 240 500 90 5 360 540 1,100 200 6 620 960 1,900 350 8 1,400 2,200 3,600 600 10 2,500 3,800 5,600 1,000 12 3,900 6,000 8,400 1,500 15 7,000 1 Does not include branches of the building drain. 2 Not over two water closets. 3 Not over six water closets. • 1305.4 Minimum Size of Soil -and.Waste Stacks. No soil or waste stack shall be smaller than the_ largest.horizontal branch connected thereto except that a 4 x 3 W.C. connection shall not be considered as a reduction in pipe size. 1305.5 Minimum Size of Stack-Vent_or Vent Stack. Any structure to which a_building_drain is installed..shall_ have at least one stack-vent or vent stack carried through` the roof, size to be determined by Table 1305.3 and 1421.2, but not less than 3 inches for residential and 4 inches for commercial permitted diameter. Reason: For clarification of this Section and interpretation on large commercial and multi-story plumbing installations. 1305.6 Future Fixtures. When provision is made for the future installation of fixtures, those provided for shall be considered in determining the required sizes of drain pipes. Construction to provide for such future installation shall be terminated with a plugged fitting or fittings at the stack so as to form no dead end. 1305.7 Underground Drainage Piping. No portion of the drainage_system. installed underground or between floors shall be less than 2-inches in diameter. 1306 Offsets on Drainage Piping. 13 - 6 1306.1 Offsets of 45 deg. or less. An offset in a vertical stack, with a change. of_direction of 45 deg. or less from the vertical, may be_sized_as_ a straight-vertical- stack. In case a horizontal branch connects to. the.. stack within..2-feet. above or below the offset, a relief vent shall be installed. in accordance.with paragraph 1418.3. 1306.2. Waste Stacks Serving_Kitchen Sinks. In a one or two family dwelling..only in which. the waste stack or vent receives the discharge of a kitchen type sink and. also_ serves-as a vent for fixtures: connected to_the horizontal portion..of_.the..branch. served by the waste..stack, the minimum.size-of the waste stack up_to the highest sink branch connection..shall be 2-inches in..diameter. Above_that..point. the size of the stack shall be governed by the total number of fixture units_vented by the stack. 1306.3 Above Highest Branch. An offset above the highest horizontal branch is an offset in the stack- vent and shall be considered only as. it affects the.developed. length of the vent. 1306.4 Below Lowest Branch. In the case of an offset. in_a soil or waste stack below the lowest horizontal branch, no change_ in__diameter. of. the stack because. of the offset shall be required if it is.made..at .an angle-of.not, greater than 45 deg. If such an offset is made at-an angle. greater-than. 45. deg. , the required diameter of the offset and. the stack below. it.shall. be_determined as for a building drain (Table 1305.2) . 1306.5 Offsets of More Than 45 deg. (a) A stack with_an. offset of. more than 45 deg. . from the vertical shall be sized as follows: (b) The portion of_ the stack above the offset..shall be. sized as for a regular stack based on the. total..number of. fixture units__above the offset. (c) The offset shall be sized. as. for. a building. drain.. (Table 1305.2 Column 5.) (d) The portion of the stack. below the offset. shall. be_ sized as for the- offset or based on the total-.number_of fixture units on the entire stack, whichever is the larger. .(See.-Table_1305.3, Column 4) . (e) A relief vent for the offset_ shall be installed. as provided in Chapter XIV. and in no case shall a. horizontal branch. connect to the stack within 2-feet above or below the offset. 1307 Sumps and Ejectors. • 1307.1 Building Drains Below Sewer. Building drains which cannot be. discharged to the.sewer.by gravity flow 13 - 7 shall be discharged into_a_.tightly_covered and vented. sump- from which the liquid shall be lifted and. discharged_into. the. building. gravity drainage • system by automatic pumping equipment or by any equally efficient method approved by the Plumbing Inspector. 1307.2 Storage Period. The storage of drainage in_a sump or ejector shall not exceed a period of 12 hours. 1307.3 Design. Sump and pumping equipmen.t. shall be so designed. as-to discharge all contents accumulated in the sump during-the cycle of_ emptying operation. 1307.4 Venting. The system of drainage piping_below the sewer shall be installed and vented, in a manner similar to that of the gravity system. 1307.5 Duplex Equipment. Sumps receiving, the discharge of more than six water closets shall be provided with duplex pumping equipment. 1307.6 Vent Sizes. • Building sump vents shall_be sized_ in accordance with Table 1421.2 but shall in no case be sized less than 12-inches. 1307.7 Separate Vents. Vents from pneumatic ejectors or similar eauipment shall be carried separately to the open air as a vent terminal. 1307.8 Connections. No direct connection of a steam exhaust, blowoff, or drip pipe shall be made with the building.drainage_system.. Waste water when discharged into the building drainage system shall be_at..a temperature not higher than 140 F. When higher temperature exists, proper cooling methods shall be provided. 1308 Floor Drains. 1308.1 Accessibility. Floor drains shall connect into a trap so constructed that it can be readily cleaned and of a.size. to serve efficiently the purpose for which it is intended. The drain inlet shall..be..so located that it is, at all times, in full view. 1308.2 Connection. • Floor drains subject to backflow shall not be directly connected to the drainage system, or shall be provided with a backwater valve. 13 - 8 1308.3 Provision for Evaporation. Floor-drain trap seals subject to evaporation shall be of the deep-seal type of not less than 4-inch water seal, or shall be fed from an approved plumbing_fixture of by means of an approved automatic_.priming device designed and approved for that purpose. 1308.4 Venting. Floor drains need not be individually vented when sized according to paragraph 1422.2. 1308.5 Size- Floor-drain traps and drains, installed below a basement floor or under- ground, shall be not less than 2-inches in diameter. 1308.6 Bell Traps. Bell traps shall not be permitted. 1309 Frost Protection. 1309.1 No soil or waste pipe shall be installed or permitted outside of a building, or concealed in outside walls or in any place where they may be subjected *_o freezing temperatures, unless adequate provision is made to protect them from freezing. 1309.2 Permissible Rates of._Discharge into City Sewers. (a) No liquids shall be discharged_ into city sewers_ at- rates of flow greater than the rates. of..flow tabulated_.in Table-.5..-for each size of city sewers. TABLE 5 - Maximum Allowable Rate of Discharge into City Sewers. Maximum Rate of Flow in Diameter of Gallons per minute permitted City Sewer to discharge into sewer 6" 50 gallons per minute 8" 75 gallons per minute 10" 125 gallons per minute 12" 180 gallons per minute 15" 290 gallons per minute 18" 400 gallons per minute 21" 525 gallons per minute 24" 690 gallons per minute (b) If the instantaneous or rapid emptying of any device, receptacle, or fixture can result in flows exceeding the rates set out in Table 5, then such discharge shall first be into. a receiving tank or sump fitted with an outlet orifice of such size as to limit the rate of flow therefrom into the sewer to the values shown in the table for the corresponding diameter of city sewer to which connected. (c) All such flow control receivers and appurtenances shall be of a design approved by the Plumbing Inspector. 13 - 9 • CHAPTER XIV VENTS AND VENTING 1401 Materials. 1401.1 Vents. Pipe, tubing, and. fittings_. for. the vent piping- system. shall comply with the provisions in Chapter V. 1401.2 Specific Type. Standards given in. Table 505 apply to the specific_materials approved for use and as indicated in the various paragraphs_.in_ this-_chapter as they apply to the venting system. 1401.3 Piping Above Ground. Vent piping shall be cast iron, galvanized steel, galvanized wrought iron, lead, brass, cooper or plastic. 1401.4 Piping Underground. Vent piping placed underground shall be cast iron or plastic provided that other materials may be used for underground vents when found adequate as directed by the Plumbing Advisory Board. • 1401.5 Fittings. Fittings shall conform.to_the type of pipe used_ in. the .vent system as . required by.paragraph 1401.2 and 1401.3. 1401.6 Acid System. Vent piping on acid-waste.systems shall conform.to. that. required for acid-waste pipe, Section 1301.6. • 1402 Protection of Trap Seals. 1402.1 Traps Protected. The protection of trap -seals from siphonage or back pressure shall be accomplished by the appropriate use of soil or-waste stacks, vents, revents, back vents, loop vents, circuit or continuous.vents, or combinations thereof, installed in accordance with the requirements. of this Chapter. 1403 Vent Stacks. 1403.1 Installation. A vent stack or a main vent shall be installed with.-a soil or waste stack whenever back vents, relief_vents, or other branch. vents are required in two or more branch intervals. 1403.2 Terminal. The vent stack shall terminate independently .above the.roof _of the build- ing or shall be connected .with the extension of .the_soil- or waste stack 14 - 1 (stack vent) at least 6-inches..above. the flood-level rim_of the.highest fixture. 1403.3 Main Stack. (a) Every building in which plumbing is installed_ shall have at least one main vent stack, which shall- rum undiminished_in size_and as directly as possible, _from the building-drain. through to. the.. open_ air.. above the roof, and in-no.-case_less than 3-inches. (b) Main vent.on. residences shall_ terminate at_high-.point of roof. 140.4 Vent Terminals. 1404.1 Roof Extension. Extensions of vent_pipes..through a roof shall.. be_terminated at least 6-inches .above it except that where- a roof is to be.used.-for any purpose other than weather protection, . the--vent. extensions shall be run at least 5-feet- above the roof. 1404.2 Flag Poling. Vent terminals shall not.be used_for the purpose_of flag poling, TV aerials,. or similar purposes, .except..when the piping_has_been anchored to _ the construction and_approved.as_safe..by the Plumbing Inspector. 1404.3 Location of Vent Terminal. No vent terminal from_a..drainage_. system_ shall be...directly beneath any door,.-window, or other ventilating_openi.ng_ of the..building_or_ of an adjacent buildingrnor shall_any_such_vent_terminal be_within._.10-feet- horizontally of such an opening. unless it is -at- least. 2feetabove..the top. of. such opening. 1404.4 Extensions Through Wall. _ Vent terminals extending,, through.. a. wall, when..approved_by.-the Plumbing Inspector, shall be_at.least._10-feet.-horizontally-from-. any lot line. They shall be_turned to. provide_ an_opening_:upward.. They_.shall: be effectively screened.-and. shall meet..the.requirements of paragraph__1404.5. Vent termi- nals shall not terminate under- the.-overhang of_the building. 1405. Frost Closure. 1405.1 Vent Terminal. Where there is a possibility- o_f-frost closure,-.the- vent_extension through a roof shall be at least 3-inches in diameter. When. it- is found necessary to increase the size of the vent terminal, the change in diameter shall be made inside the building. 1405.2 Increasers. Change in diameter. of.-vent. te.rminals shall be made-by use of a long in- 111 creaser at least 1-foot-below the roof. 1406 Vent.Grades and Connections. 14 - 2 1406.1 Grade. All vent and branch-vent.pipes-shall be so graded_ and- connected as to drip back to the soil or waste-pipe by gravity. 1406.2 Vertical Rise. Where vent pipes connect.-to a horizontal soil.-or.waste..pipe, the vent shall be taken off above the -center_line of .thesoil. pipe,. and. the vent pipe shall. rise vertically, or at an angle_not more- than. 45- deg. from the vertical, to.-a point at least 6-inches -above..the flood-level.rim.of the fixture it is venting before offsetting horizontally or before-connecting_.to.-the branch vent. 1406.3 Height Above Fixtures. A. connection between_a vent pipe_and a vent stack.. or..stack-vent shall be made at least 6-inches. above_ the flood-level rim of the.highest. fixture served by-.the vent. Horizontal. vent pipes_.forming branch-.vents, . relief vents, or loop -vents shall be at least=6-inches .above_ the flood-level rim of the highest_ fixture served. 1406.4 Side-Inlet. Side-inlet closet_bends. ar.e_permitted only in the fixture connecting. thereto is.vented. and..no_no__case shall the-inlet be used to vent a bathroom. group without being-washed_by a fixture. • . 1407 Bars and Soda Fountain Sinks. 1407.1 Bars and Fountain-Sink. Traps. Traps serving sinks-which. are part of the equipment_of.bars, soda fountains, and counters need not be vented when the location .and. const.ruction of such bars, soda fountains, and counters are such as to make it impossible to do so. When such conditions exist, such sinks shall discharge. into a floor sink or hopper which_is properly trapped and vented. 1407.2 Sumps. Sinks or _sumps, receiving-.indirect waste, shall be located.in a properly lighted and ventilated space. 1408 Fixtures Back-to-Back. _ 1408.1 Distance. Two fixtures set back-to-back,_within the distance allowed between a trap and its vent, may be .served_with one continuous soil_or waste vent- pipe, provided that each fixture_wastes- separately. into an approved double fitting having inlet openings at .the same level. . . (See paragraph 1410.2) . 1409. Fixture Vents. • 1409.1 Distance of Trap from Vent. Each fixture trap shall have a_protecting vent so located that the slope 14 - 3 and the developed length in the fixture drain_ from the trap weir to the vent fitting are within the requirements set- forth- in Table 1409.3 1409.2 Trap-Seal Protection. The plumbing system shall..be provided with a system-of-vent piping which will permit the admission or emission-of air so that under normal and intended use the seal of any fixture trap shall not be subjected_ to .a. pressure differ- ential of more than 1-inch of water. 1409.3 - DISTANCE OF FIXTURE .TRAP_FROM VENT. (See Chart page 14 - 41 1409.4 Trap Dip. The vent pipe opening from a.soil_or waste pipe, except for- water closets and similar -fixtures, shall not be below the top weir of the trap. 1409.5 Crown Vent. No vent shall be installed_within_.two pipe diameters of the trap weir. 1410 Common Vent. 1410.1 Individual Vent. An individual vent, installed vertically, may be-used_as a common vent for two fixture traps when both fixture drains connect with. a vertical drain at the same level. • 1410.2 Common Vent. A common vent may be used for two fixtures set on the same floor level but connecting at different: levels==in. the. stack, provided the-vertical drain is one pipe size larger..than the_upper_fixture drain but in no case smaller than the lower fixture drain, whichever is the larger_and_that both drains conform to Table 1409.3. 1411 Vents for Fixture Trap Below Trap Dip. 1411.1 Hydraulic Gradient. Fixture drains shall be vented_within the hydraulic_gradient between the trap_outlet and vent connection, but in no case shall, the. unvented drain exceed the distance provided in Table 1409.3. 1411.2 Different Levels. If any stack has fixtures_entering_ at_different levels, the fixtures other than the fixture entering,at .the...highest level shall be vented, except as may be permitted in other sections-of this chapter. 1412 Wet Venting. • 1412.1 Single Bathroom Groups. A single bathroom group of fixtures may be installed with the drain from a back-vented lavatory, kitchen_ sink, or combination fixture serving 14 - 4 TABLE 1409.3 - DISTANCE OF FIXTURE TRAP FROM VENT. • Size of Fixture Drain Inches Distance Trap to Vent 11 4 ft. 11 6 ft. 2 8ft. 3 12 ft. 4 16 ft. Vent Opening Slope 1/4 or 1/8 Trap Ft t m Measured Along Center of Waste SECTION ._ Developed Length OnlegiV %V\ 4 i=mole © • PLAN DEVELOPED LENGTH MEASUREMENT Hydraulic Gradient Vent Pipe Opening Trap Weir gzi • • One Pipe Diameter Maximum SLOPE MEASUREMENT • 14 - 41 as a wet vent for a bathtub or shower stall and for the water closet, provided that: • (a) Not more than one fixture unit is drained into a. 11-inch diameter wet vent or not more than four fixture units drain into a 2-inch diameter wet vent. (b) The horizontal branch connects to the stack_at_the same level as the water-closet-drain or below the water-closet drain when installed on the top floor.. It may also connect to the water-closet bend. 1412.2 Double Bath. Bathroom groups back-to-back on top floor consisting of two lavatories and two bathtubs or shower stalls may be installed on the same horizontal branch with a common vent for the lavatories and with no back vent for the bathtubs or shower stalls and for the water_closets, provided the wet vent is 2-inches in diameter, and the length._of the fixture..drain conforms to Table 1409.3. 1412.3 Multistory Bathroom Groups. On the lower floors of a_multistory building, the waste pipe from one or two lavatories may be used as a.wet vent for one or two bathtubs or showers provided that: (a) The wet vent and its extension to the vent stack is not less than 2-inches in diameter, and that, • (b) Each water closet below the top floor is individually back vented, and that, (c) The vent stack is sized as given in Table 1412.3(c). TABLE 1412.3(c) -.. SIZE..OF VENT STACKS Number of Wet-Vented Fixtures Diameter. of Vent Stacks Inches 1 or 2 bathtubs or showers 2 3 to 5 bathtubs or showers 21 6 to.9 bathtubs or showers 3 10 to 16 bathtubs or showers 4 1412.4 Exception. In multistory bathroom groups, wet vented in accordance with paragraph 1412.3, the water. closetsbelow.the top,floor need_not be individually vented if the 2-inch waste connects directly into the water closet bend at a 45 deg. angle. to.-the horizontal_portion of the bend in the direction of flow. 1413 Stack Venting.. 1413.1 One-Bathroom Group. Except as indicated in paragraph 1413.2, a group of fixtures, consisting 14 - 5 of one bathroom group and a kitchen sink or combination fixture, may be installed without individual. fixture. vents, in. a. one-story building or on the top floor of a building, provided... eacb fixture..drain._connects independently to the stack and the water closet and bathtub or shower-stall drain enters the stack.at.-the same level and in accordance,with the requirements in Table 1409.3. 1413.2 Overtaxed Sewers. When a sink or combination fixture connects to the stack-vented bath- room group, and when the street sewer is sufficiently overloaded to cause frequent submersion of the.-building_sewer,-a relief vent or back-vented fixture shall be connected to the stack below the stack-vented water closet or bathtub. 1414 Individual Fixture Reventing. 1414.1 Horizontal Branches. One sink and one lavatory, or three lavatories within..8-feet developed length of a main-vented line may be installed on a. 2-inch horizontal waste branch without reventing, provided_the branch is not less than 2-inches in diameter throughout its length, and provided the wastes are connected into the side of the branch and the branch leads to its stack connection with a pitch of not more than 1-inch per foot. Installation requires special permission from Plumbing Inspector. 1414.2 Where Required. When fixtures other than water closets discharge downstream from a water closet, each fixture connecting downstream shall be individually vented. 1414.3 Limits of Fixture Units. Above. Bathtubs and_.Water Closets. A fixture or combination of fixtures whose total discharge rating is not more than. 3 fixture units may discharge into_.a. stack not less than 3-inches in diameter without reventing, provided. such-fixture connections are made above the connection to the highest..water_claser, or bathtub: tee-wye, the fixture- unit rating of the stack is not otherwise exceeded, and their waste piping is installed as otherwise required in paragraph 1414.1. 1415 Circuit and Loop Venting. 1415.1 Battery Venting. A branch soil or waste pipe to which two but not more than eight water closets (except blowout_type) , pedestal urinals, trap standard to floor, shower stalls, or floor drains are connected in battery, may be vented by a circuit or loop vent which shall take off in front of the last fixture connection. In addition, lower-floor branches serving more than three water closets shall be provided with a relief vent taken off in front of._the first fixture connection. When lavatories or similar fixtures discharge above such branches, each vertical branch shall be provided with a continuous vent. 1415.2 Dual Branches. When parallel horizontal branches serve a total of eight water closets 14 - 6 . (four on each branch) , each branch shall be provided_with a relief vent at a point between the two most distant. water closets. . When. other..fixtures (than water closets) discharge- above .the_horizontal branch, each such fixture shall be vented. 1415.3 Vent Connections. When the circuit, loop, or_relief_vent connections-_are_taken off the horizontal..branch, the vent branch__.connection._shall_be_ taken.= off at a vertical angle or from the top of the horizontal branch. 1415.4 Fixtures Back-to-Back in Battery. When fixtures are connected_ to_ one horizontal branch_.through a double wye or a sanitary tee in a vertical_ posi.toin, a common vent for each two fixtures back-to-back or double connection shall be provided. The common vent shall be installed in a vertical position as .a continuation of the double connection. 1416. Pneumatic Ejectors. 1416.1 Relief vents from a_pneumatic- ejector shall not be connected to a fixture- branch-vent but shall be carried separately to a main vent .or stack-vent or to the open air. 1417 Relief Vents. 1417.1 Stacks or More Than 10_Branch Intervals. Soil and waste stacks in..'buildings .having more_than..10_branch intervals shall be provided with a relief vent at each tenth interval installed, be- ginning with the top floors The size of the relief_vent shall be equal to the size of the vent stack to which it connects. The lower end of each relief vent shall connect to the soil or waste stack through a. way below the horizontal branch serving the floor and the upper_end. shall- connect to the vent stack through a wye not less than 3-feet above_ the floor level. 1418 Offsets at an Angle Less Than 45.Deg. _from the Horizontal in Buildings OF Five or More Stories. 1418.1 Offset Vents. Offsets less than 45 deg. from the horizontal, in .a soil or waste stack, except as permitted in Chapter XIII, Section 1306, shall comply with paragraphs 1418.2 and 1418.3. 1418.2 Separate Venting. Such offsets may be.vented.by installing a relief vent as a vertical continuation of the lower section of the stack or as a side vent connected to the lower section between the offset-and next lower fixture or horizontal branch. The upper section of the offset shall be provided with a yoke vent. The diameter of the vents shall not be less than the diameter of the main • vent, or of the soil and waste stack, whichever is the smaller. 14 - 7 1419 Main Vents to Connect at Base. 1419.1 All main vents or vent stacks shall connect full size_at their base to the building drain or to the main soil or waste_ pipe, at or below the lowest fixture branch. All vent pipes shall_.extend_undiminished_ in..size above the roof, or shall be reconnected_with the main soil or waste vent. 1420 Vent Headers. 1420.1 Connections to Vents. Stack-vents and vent stacks may be connected into a common vent header at the top of the stacks and then extended to the open_ air_at one point. This header shall be sized in accordance with the requirements. of Table 1412.2, the number of units being the sum of all units on all stacks connected thereto and the developed length being_ the longest_vent length from the intersection at the base of the most distant stack to the vent terminal in the open air as a direct extension of one stack. 1421 Size and Length of Vents. 1421.1 Length of Vent Stacks. The length of the vent stack or main vent shall_be.its developed length from the lowest connection of the vent system with the soil stack, waste stack, or building drain to the vent stack terminal, .if..it..terminates..separately in 0 the open air, or to the connection_ of the vent stack._with the stack-vent, plus the developed length of. the. stack-vent. from_ the connection_to the terminal in the open air, if the two vents are connected.together_with a single extension to the open air. 1421.2 Size of Individual, .Relief, .and Circuit or Loop Vents. The diameter of_an individual, relief, circuit or loop vent shall not be less than one-half the pipe_size..of the line it is venting, but in no case less than 11 inches and shall be determined from its length and the total of fixture units connected thereto., as provided in a_horizontal position. TABLE 1421.2 - SIZE AND LENGTH OF VENTS - See page 14 - 9 1422 Combination Waste-and-Vent System. 1422.1 Where Permitted. A combination waste-and-vent system shall be permitted only where structural conditions preclude_the. installation of .a. conventipnal system as otherwise provided in this Code. 1422.2 Limits. A combination waste-and-vent system is limited_to floor drains and sinks. It consists of an installation of waste_piping in which the trap of the fixture is not individually vented. Every waste pipe and trap in the system shall be at least two pipe sizes larger than the size required_in Chapter XIII. 14 - 8 • 0 Cn H H• H f (D 0000000000000\ O O■ O' Uilnln .1- .� 4- W W Lo ND N N �Y H r 7' rt 0 (D (D Cn Cn 0 rr H• sv H n Ij c. w In W N H W N H H H O >4 0' 000i00' N . - 0' 100 UiHln NUiNH p rr 0000000000' N1n 0000000' W H4NH--H H g 0 O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N O N O 0 o N (D r i • (D rt CD a 0 H rI w 9 r 0\ 0000 p~ H i .L� N H 4 4 . N H H W W LA CD Ln 1--' 1 000LnOO o\" Cn H tTi • H ND N W W Ui CS 0 0 Ui O �--I IN H OO1n000000 H tml 0 H N N W �J N C O HNN W W V '0000000 F��+ o 1-11ln00ln0000000 �,7d� L-' H C 0 Cn N N W Ut Ut V 00 00 1n ON 0 0 07'.� H 0 0 0 0 0 0 0 0 0 0 0 0 H 7d qi HHNNW W V 'O0 ?y N W .NUi -J0N000Ui000 ?1 H U700000Ui0000000 - tTi H HHNN La 4-- 'O0 N W Li V CN 0o O Ui 0 Ui 00000 nn U i 0 0 0 i 0 0 0 0 0 0 0 0 0 0 0 H H H O\ Oo0NUi Vi000000 P% O 0 0 l n 0 0 0 0 0 0 0 0 H H H H N W U 0 03 H N W UiUi000000 O 0 0 0 0 0 0 0 Oo • 14 — 9 CHAPTER XV • STORM DRAINS 1501 General. 1501.1 Drainage Required. Roofs, paved areas, yards, courts, and courtyards, shall be drained into a storm-sewer where such systems are available. 1501.2 Prohibited Drainage. Storm water shall not be drained into sanitary_sewers intended for sewage only. 1501.3 Expansion Joints. Expansion joints or sleeves shall be provided where warranted by temper- ature variations or physical conditions. 1501.4 Subsoil Drains. Where subsoil drains are placed under the cellar or basement floor or are used to surround the outer walls of a building, they shall-be.made of open- jointed or horizontally split or_perforated clay tile, perforated bituminized fiber pipe, asbestos cement pipe, or plastic pipe meeting the requirements • of Table 505 may be accepted, not less. than 4-inches in diameter. When the building is subject to back-water, the subsoil drain shall be protected by an accessibly located backwater valve. Subsoil drains may discharge into a properly trapped area drain or sump. Such sumps do not require vents. 1501.5 Buildin g Subdrains. Building subdrains located below the public sewer level_.shall discharge into a sump or receiving tank the contents of which shall be automatically lifted and discharged into the drainage system as required for building sumps. 1502. Materials. 1502.1 Inside Conductors. Conductors placed within a building or run in a vent or pipe shaft shall be of cast-iron, g alvanized steel, g alvanized wrought-iron, galvanized ferrous alloys, brass,_copper, lead or plastic. 1502.2 Outside Leaders. When outside leaders are of sheet metal and connected with a building storm drain or storm sewer, they shall be connected to a cast-iron drain extending above the finish grade, or the sheet-metal leader shall be • protected against injury. 1502.3 Underground Storm Drains. Building storm drains underground, inside the building, shall be of cast-iron soil pipe or plastic. 15 - 1 1502.4 Building Storm Sewers. • The building storm sewer shall be of cast-iron soil pipe, vitrified- clay pipe, concrete pipe, asbestos-cement pipe, or plastic pipe meeting the requirements of Table 505 may be accepted. 1503 Traps. 1503.1 Material. Storm-water traps, when required, shall be of cast-iron. 1503.2 When not Required. No traps shall be required for storm-water drains which are connected to a sewer carrying storm-water exclusively. 1503.3 Size. Traps for individual_conductors shall be the same size as the horizontal drain to which they are connected. 1503.4 Location. Conductor traps shall be so located that an accessible. cleanout may be installed on the building side of the trap. • 1504 Conductors and Connections. 1504.1 Prohibited Use. Conductor pipes shall not be used as soil waste, or vent pipes, nor shall soil, waste, or vent pipes be used as conductors. 1504.2 Protection. Rain-water conductors installed along alley ways, driveways, or other locations where they may be exposed.. to damage shall be protected by metal guards, recessed into the wall, or constructed from ferrous alloy pipe. 1504.3 Combining Storm with Sanitary Drainage. The sanitary and storm-drainage_system of a building.. shall be entirely separate. 1504.4 Floor Drains Must be Trapped. Floor drains connected to a storm-drain shall be trapped. 1505 Roof Drains. 1505.1 Material. • Roof drains shall be of cast-iron, copper, plastic , lead or other acceptable corrosion-resisting material with adequate strainer area. 15 - 2 1505.2 Strainers. • All roof areas, except those draining to hanging_ gutters, shall be equipped with roof drains having strainers extending not less than 4-inches above the surface of the roof immediately adjacent to the roof drain. Strainers shall have an available inlet area, above roof level, of not less than 11 times the area of the conductor or leader to which the drain is connected. 1505.3 Flat Decks. Roof drain dtrainers for use on sun decks, parking_decks, and similar areas, normally serviced and maintained, may be of the flat surface type, level with the deck and shall have an available inlet area not less than 2 times the area of the conductor or leader to which the drain is connected. 1505.4 Roof Drain Flashings. The connections between roofs: and roof drains which pass through the roof and into the interior of the building shall-be_made. water-tight by the use of proper flashing material. 1506 Size of Leaders and Storm-Drains. 1506.1 Vertical leaders shall be sized..on the maximum projected roof area. according to the following table: • TABLE 1506.1 - SIZE OF VERTICAL LEADERS Size of Leader or Conductor* Maximum Projected Roof Area Inches Square Feet 2 720 22 1300 3 2200 4 4600 5 8650 6 13500 8 29000 * The equivalent diameter of square or rectangular leader may be taken as the diameter of that circle which may be inscribed within the cross-sectional area of the leader. NOTE: See foot-note to Table 1506.2 1506.2 Building Storm-Drain. The size of the building storm-drain or any of its horizontal branches having a slope of 1/2-inch or less per foot, shall .be_based upon the maximum projected roof area to be handled according to the following table: 411 15 - 3 TABLE 1506.2 - SIZE OF HORIZONTAL STORM DRAINS II/ Diameter of Maximum Projected Roof_Area for Drains Drain of Various Slopes Inches 1/8-In. Slope 1/4-In. Slope 1/2-Inch Slope Square Feet Square Feet Square Feet 3 822 1160 1644 4 1880 2650 3760 5 3340 4720 6680 6 5350 7550 10700 8 11500 16300 23000 10 20700 29200 41400 12 33300 47000 66600 15 59500 84000 119000 Tables 1506.1 and 1506.2 are based upon a maximum rate of rainfall of 4-inches per hour. If in any state, city, or other political subdivision, the maximum rate of rainfall is more or less than 4-inches per hour, then the figures for roof area must be adjusted proportionately by :, - multi- plying the figure by 4 and dividing by the maximum rate of rainfall in inches per hour. 1506.3 Roof Gutters. The size of semicircular gutter shall be based on the maximum projected • roof area, according to the following table: TABLE 1506.3 - SIZE OF GUTTERS Diameter of Maximum Projected Roof Area for Gutters of Gutter* Various Slopes 1/16-In. Slope 1/8In. Slope 1/4-IN. Slope : 1/2-In. Slope Inches Square Feet Square Feet Square Feet Square Feet 3 170 240 340 480 4 360 510 720 1020 5 625 880 1250 1770 6 960 1360 1920 2770 7 1380 1950 2760 3900 8 1990 2800 3980 5600 10 3600 5100 7200 10000 * Gutters other than semicircular may be used provided they-have an equiva- lent cross-sectional area. 1507 Values for Continuous Flow. 1507.1 • Where there is a continuous or semicontinuous discharge into the build- ing storm drain or building storm sewer, as from a pump, ejector, air- conditioning plant, or similar device, each gallon per minute of such dis- charge shall be computed as being equivalent to 24 square feet of roof area, based upon a 4-inch rainfall. 15 - 4 APPENDIX A • MANUFACTURERS SPECIFICATIONS, RECOMMENDATIONS AND INSTRUCTIONS FOR THE INSTAL- LATION OF HOUSE OR BUILDING SEWERS. CAST IRON SOIL PIPE. The procedure endorsed by the. Cast. Iron Pipe Institute is that which has been common practice in the Plumbing Industry for many years. We have found that when this procedure is followed, Cast Iron Soil.Pipe will give trouble free service for the life of the buildings. (a) Grade trench_reasonable_free of stones and pockets. (b) Where trenching conditions are difficult, pipe may be supported by masonry blocks, bricks, concrete blocks, or any other similar support. (c) Where any such masonry support is necessary it must be placed within (6") inches of the joint. (d) Install pipe, make joint with oakum filler properly yarned, and firmly packed with 1" hot poured lead properly caulked, or other approved joints. (e) After inspection, backfill by any convenient means, eliminating large stones in first 6 inches of backfill. These instructions in no way preclude the prefabrication of Cast Iron Soil Pipe before it is laid in the trench, which will vary greatly with the equipment and experience of the individual contractor. • CLAY PIPE A. Trench and Material Preparation. (a) Width of trenches in which clay pipe is to be installed shall be such as to provide adequate space for workmen to place..and joint the pipe properly. (b) Bell holes shall be excavated so that, after placement, only the barrel of the pipe receives bearing-pressure from the trench bottom. (c) Preparation of the trench bottom and placement of the pipe shall be carefully made so that, when in final position, the pipe is true to line and grade. (d) Pipe shall be protected..during handling against impact shock and free fall. No pipe shall be used in the work which does not conform to the appropriate ASTM standard. B. Pipe Laying and .jointing. . (a) The laying of pipe in finished trenches shall be commenced at the lowest point, with the. spigot_ends pointing in the direction of flow. (b) All pipe shall be laid..with ends abutting and true to line and grade. They shall be carefully centered, so that when laid they will form a sewer with a uniform invert. (c) Pipe shall be set firmly according to line and grade, and, preparatory to making pipe joints, all surfaces of the portion of the • pipe adjusted and filled with the_jointing material. (d) Trenches shall be kept water-free during jointing and for a sufficient period thereafter to allow the jointing material to become fully set and completely resistant to water penetration. Trenches shall A - 1 be backfilled immediately after pipe is laid therein to prevent dislocation of the sewer line or jointing.material. (Note: Not applicable when factory applied flexible compression joints are used.) C. Testing. (a) The sewer line will be tested as required_elsewhere. herein, or as prescribed by local authority. • • A - 2 APPENDIX B Plumbing Installation Standards for Mobile Homes and Travel Trailers and Parks. B-1. PURPOSE, APPLICATION AND SCOPE (a) The requirements set forth in this Appendix shall apply specifically to all new mobile home and travel trailer parks, and to additions to existing parks as herein defined, and are to provide_minimum standards for sanitation and plumbing installation within these parks, for the accommodations, use and parking of mobile homes and travel trailers. (b) Plumbing and heating installations in mobile homes and travel trailers shall be installed in accordance with the approved standards of the Mobile Home Manufacturers Association. B - 2 DEFINITIONS Definitions contained .in Chapter .III of the City of. Wichita Falls Plumbing Code shall also apply to this Appendix "B" except where the following special definitions shall apply: (a) Air Lock - air lock is a condition where air is trapped in a drain or drain hose and retards or stops the flow of liquid waste or sewage. Center - Center of a mobile home or a travel trailer is the longi- tudinal center line located midway between the right and left side. Combination Compartment.- a shower stall with or without a door which provides for or includes a water closet. It is sized for occupancy of only one person. Department having jurisdiction - means the administrative authority or other law enforcement agency having jurisdiction over this regulation. Dependent Travel Trailer. - means a trailer coach not equipped with a water closet. Drain Hose - the drain hose is the approved type hose, flexible and easily detachable, used for connecting, the drain outlet to a sewer inlet connection. Drain Outlet - the drain outlet is the lowest end of the main drain to which the terminal end of the drain hose is connected. Independent Mobile Home or Travel Trailer - means one equipped with a water closet and a bath or shower. Inlet Coupling - inlet coupling is the terminal end of the water system to which the water service connection is made. It may be a swivel fitting or threaded pipe end. INtermediate Waste Holding Tank - (travel trailers only) An enclosed tank for the temporary retention of water-borne waste. B - 1 Length - length of a mobile home or travel trailer is the distance measured from the top of the hitch to the part furthest to the rear. Mobile Home - is a vehicular, portable structure built on a chassis and designed to be used without a permanent foundation as a permanent dwelling when connected to indicated utilities. Mobile Home or Travel Trailer_ Park - shall mean and include site, lot, tract or parcel of land upon which one or more mobile home or travel trailer is parked, for the temporary or permanent use as living quarters of one or more families. Park Drainage System.- means the entire system of drainage piping used to convey sewage or other wastes from the mobile home or travel trailer drain outlet connection, at its connection to the mobile home or travel trailer site, to a public sewer or private sewage_disposal system. Park Water Supply System - all of the water supply, piping within the park shall extend from the main public supply or other source of supply to, but not including the mobile home or travel trailer service system, and shall include branch service lines, fixture devices, service buildings and appurte- nances thereto. Service Building - a building:housing toilet and bathing facilities for men and women, with laundry facilities. Sewer Lateral - that portion of the park drainage system extending to a mobile home or travel trailer site. Travel Trailer - a travel trailer is a vehicular, portable structure built on a chassis, designed to be used as a temporary dwelling for travel, recreational and vacation uses, permanently.identified "Travel Trailer", by the manufacturer, on the trailer and when factory equipped.. for the road, having a body width not exceeding_ eight._feet. .(8') .and being of any length provided its gross weight does_not exceed 4500 pounds, or being of any weight provided its overall length does not exceed_twenty-nine feet (29') . Travel Trailer Sanitary,Service. Station - one used for emptying waste holding tanks. B - .3 GENERAL REGULATIONS (a) The general provisions of the.City_ of Wichita Falls Plumbing Code shall govern the installation of plumbing. systems. in mobile_home.or travel trailer parks, except where special conditions or construction are specifically defined in this Appendix. (b) Mobile Home and Travel Trailer Sates - mobile homes or travel trailers shall not hereafter be parked in any mobile home or travel trailer park unless there are provided plumbing and sanitation facilities installed and maintained in conformity with these regulations. Every mobile home or travel trailer shall provide a gas and water-tight connection for sewage disposal which shall be connected to an underground sewage collection system discharging into a public or private disposal system. B - 2 (c) No dependent travel trailer shall be parked at any time in a space designed and designated for an independent mobile_home_ or travel trailer unless public toilet and bath facilities_within two hundred (200') feet . of the dependent travel trailer are available. B - 4 PLANS AND SPECIFICATIONS Every mobile home or travel_ trailer park owner or_operator before pro- viding areas of space for the use of.. accommodation..of independent mobile homes or travel trailers shall make application._for permit and file two sets of. plans_and specifications with the Building. Inspection Department. The plans and specifications shall be-in. detail as follows: (a) A scaled plot plan of the park, indicating the spaces, area, or portion of the park for the parking-.of independent_mobile homes, travel and dependent trailers. (b) Size, location and specification of the park drainage system. (c) Size, location and specification of water supply lines and their location. (d) Size, location and layouts of service building. (e) . Size, location and specification of gas distribution lines. (f) Size, location, specification.and layout of the fire protection system. (g) A scaled layout of typical trailer sites. (h) Applications shall bear the approval of_the. local enforcement agencies as to compliance with city or county plumbing and health ordinances. (i) Plumbing required by this article shall comply with all city plumbing and health ordinances and regulations. (j) The issuance of a permit shall not constitute approval of any violation of this article or of any city or county ordinance or regulation. (k) An approved set of plans and a copy of the permit shall be kept on the park premises until the final._inspection has been made. B - 5 MATERIALS Unless otherwise..provided for in this Appendix, all piping_ fixtures, or devices used or entering...into_the..installation_.of_parks. drainage, water distribution and gas distribution systems..or parts thereof shall conform to the wuality and weights of materials presented in the City of Wichita Falls Plumbing Code. B - 6 GENERAL REGULATIONS (a) Unless otherwise provided for in this Appendix, all plumbing fixtures, piping, drains, appurtenances and appliances designed__and _used in the parks • drainage, water distribution, gas distribution systems and service connection shall be installed in conformance with the City of Wichita Falls Plumbing Code. B - 3 1 B - 7 PARK DRAINAGE SYSTEM • (a) The main sewer and sewer laterals shall be installed in a separate trench not less than twelve inches (12") from the park water service or distribution system. No sewer pipe material shall be- installed less than thirty (30") inches below grade in any area where a mobile home or travel trailer is parked or a motor vehicle may be driven. (b) The minimum pipe size in any mobile home or travel trailer park drainage system shall be four inches (4") . Park drainage systems pipe sizes shall be calculated and designed_ according_to_good engineering practice. (c) Each mobile. homr.or travel trailer shall_be considered as six (6) fixture units in determining discharge requirements in the design of park drainage and sewage disposal systems. (d) Minimum grade for sewers shall be so designed that_.a.slope sufficient to provide so that the flow will have a mean velocity of two feet (2") per second when the pipe is flowing full_ or half full. (e) The discharge of.the_park drainage system shall be connected to a public sewer. Where a public sewer is not available-within 300 feet for use, an individual sewage disposal system shall be installed, of a type that is acceptable and approved by the.Administrative Authority or other law enforcement agency having jurisdiction over this regulation. (f) Manholes or clean outs shall be located at any point in the line • __ where a deviation occurs in excess of forty-five degrees.. (45°) from a straight line and not more than two hundred feet (200') apart in straight runs. Manholes shall be accessible and brought to grade. (g) Wet vented drainage_systems shall be so designed and installed to adequately_ accommodate passage of air and waste in the same pipe. (h-1) Branch lines or sewer laterals to individual mobile home or travel trailer shall be not less than four inches. (4") in diameter. (h-2) Each mobile home and travel trailer site shall be provided with a sewer lateral with a cast iron "P" trap which shall..terminate four inches (4") above grade. The inlet shall be so designed and installed to receive the discharge from the mobile home or travel trailer_ drain connection at the proper grade and angle. The extension above grade shall be protected by at least four inches (4") of concrete approximately eighteen by eighteen (18" x 18") square. Each outlet_ shall_ be provided_with a gas tight cap and chain to close the inlet when not in use. (h-3) Sewer laterals over twenty-five feet (25') from the main park drainage sewer shall be properly vented and provided with a- cleanout brought to grade. (h-4) To provide the shortest possible drain connection between the mobile home and travel trailer outlet and drain inlet, all drain inlets shall terminate with reference to the site location of the mobile home or travel trailer. • (h-5) Drain connections shall slope continuously downward and form no traps. All pipe joints and connections shall be installed and maintained gas and water tight. B - 4 (h-6) No sewage, waste water, or any other effluent shall be allowed to be deposited on the surface of the ground. B - 8 WATER DISTRIBUTION SYSTEM (a) Every mobile home or travel trailer site shall be provided with an individual branch service line delivering safe, pure, .and_potable water. The outlet of the branch service_ line_ shall terminateon the. left side of the site of the mobile home or travel trailer. (b) Each mobile home or travel trailer park water distributing system shall be so designed and maintained as to provide a pressure of not less than 30 p.s.i. at each mobile home or travel trailer site under normal operation conditions. The minimum size of branch service line to each site shall be 3/4". B - 9 MOBILE HOME AND TRAVEL TRAILER CONNECTIONS - RESPONSIBILITY (a) When it is evident that there exists, or may exist, a violation of these rules, the owner, operator, lessee, person in charge of the park, or any other person causing a violation shall cause to be corrected immediately or disconnect the service connection and mobile home or travel trailer drain connection from the respective park branch service--line_ and- sewer lateral. (b) Mobile home and travel trailer drain connections shall be of approved semirigid or flexible reinforced hose having smooth interior surfaces and not less than three (3) inches inside diameter. Drain connections shall be equipped • with a standard quick disconnect screw or clamp type fitting, not less in size than the outlet. Drain connections shall be gastight and no longer than necessary to make the connection between the mobile home and travel trailer outlet and the trap inlet on the site. B - 10 GAS DISTRIBUTION SYSTEM (a) In mobile home and travel_trailer parks in which...gas distribution systems are installed, the installation shall conform with the requirements set forth in the City of Wichita_Falls. Plumbing Code. (b) The minimum size of the gas service line to each mobile home or travel trailer site shall be 1" and_a cutoff valve shall be installed on each branch. B - 11 MAINTENANCE (a) All devices or safeguards required by this article shall be maintained in good working order. The owner, operator, or lessee- of- the mobile home or travel trailer park or his designated agent shall_be. responsible for their maintenance. ILLUSTRATIONS The following illustrations (diagrams) have been included in the 1972 • edition of the Plumbing Code, to aid you in interpreting this code. In using the diagrams, they are not construed as superseding the written text, but merely to illustrate. The,various methods indicated diagram- matically do not limit other configurations or design_ of plumbing soil, waste and vent systems, water piping, accessories, etc. , when in compliance with the written test. It is further suggested that the users thereof refer to the appropriate sections and standards regarding any other diagram to avoid misunderstanding. B - 5 S VENT PiPo ET. ESE- �UF.Po=MCTEI=6 BY Pol..,e- ' r IN CoNCitSTE 1. VENT ¢ourvo G cur 2"x 1 e x 1e" 4"A1 ovE CoNCR&:rt: GROUND GRADE • `—aos AcilioV ,R,• uNo lawiwit&A!figittotiair 4., afii'd"Y NWAVZZW 280r G #ttouNC) 14L o� lIIiI � N T Pt..t. M t3 t td o I N�a P E G t oND E PT C(TY OF Wtc1-4 TA F Lt_sTi=x. ' T.ca o.s c.a.cz D H® US TIAILE C N N ECTI®t�! 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VACUUM RE- 1 LIEF VALVE MUST BE IN COLD WATER REQUIRED FOR BOTTOM INLET TANKS OR SUPPLY AND LOCATED ABOVE TANK TOP TANKS NOT EQUIPPED WITH ANTI SYPHON TUBES _ HOT WATER . DISPOSAL SINK • T&P f SUPPLY t FLOOD LEVEE VALVE • T--COLD WATER SUPPLY SHUT. SOLENOID OR OTHER SHUT- OFF VALVE MA%IMUM DIE- 1 TOP LANCE FROM HEATER 7'0" OFF VALVE P' FOOD FULL SIZE WASTE OF RELIEF TEMPERATURE SENS- GRINDER VALVE LNG ELEMENT IN OUTLET • HOTTEST WATER IN WHEN SEPARATE TEMPERATURE AND PRES WATER SUPPLY TANK NOT MORE SURE RELIEF VALVE ARE USED, PRESSURE THAN A" DOWN ..- RELIEF VALVE MAY BE LOCATED IN THE FROM TOP COLD WATER SUPPLY BETWEEN SHUT-OFF VALVE AND TANK OR HEATER NOT APPROVED SOLENOID VALVE CLOSES OFF VACUUM BREAKER OUTLET PLACING VACUUM BREAK. VACUUM WEAKER I ER UNDER CONSTANT PRESSURE ISEE U.S.A.S. A40.6-1942 PARAGRAPHS 66 A 711 ip MN DISPOSAL SINK A SHUT-OFF FLOOD LEVEL j .. - VALVE 4 IMPROPERLY LOCATED y_ , SOLENOID OR - OTHER SHUT. 1] OFF VALVE TO APPROVED FooO SAFETY AND ANTI-SYPHON • WASTE TERMINAL DEVICES GRINDER DRAWN BY FLOYD W.DIMON, JR., EXAMPLES OF{ACK SYPHON ISkt SEC. 922.6 A 922.61 E PROTECTION WATER SUPPLY CHIEF PLUMBING INSPECTOR. BIRMINGHAM, ALABAMA DRAWING NO.10 D m n s n 1,:(,5,' • r. m A; A -F,'C.- I I T. II 2 O v v m o n > x o O- in� z9 o A• ! o z = -I" p o o N~<i R• ■11 33 +A o ..gyp p - ,n 8x z p v o0 n/ n0 p �z wf CS' D > �p o m o� per- ' n x �X N m Si m ' A T O oO z y 2- .. ' n - u V O o _ . A O Z < O m,` � �"D_' O V z C cJ,° 20 O W r 1I 0 v m iL HI • • -•-- 0 n p n D 1 -o Z 1 N_, z,2s; °£• A V PD mo�O O OD rffNrCZIA. =N DT T —miU �)__�' m A O ��9 N o'y ' 9F_ £o p `o z �= m P. 0 z Pb?' rz> p m • ALL VENTS SIZED BY CONVENTIONAL METHOD �+ .....� T I EXCEPT THAT WHEN FIXTURES DRAIN INTO IU I '- ,----- BRICK I EITHER VENT A OR B STACK UP THROUGH DRAIN I I FITTING SAME SIZE AS HORIZONTAL PORTION OF I F----,�1 1 I SYSTEM I r I ��a0' I tilit) I — GLASS I I ^' I f_PRECLUDES CONVENTIONAL I I I •t�l VENT SYSTEM I 1 I FLOOR SINK 3 •5.1 I tT- STACK A __,,_i TYPICAL SIZE BY CONVENTIONAL (REQUIRED) ' •. I • METHOD 4"MIN. I r • I • SINK W GREASE FLOOR DRAIN W P -.4_— SINK TRAP 4-F.U. \ TRAP TYPICAL ..-2'.'7" MIN. EXCEPT FOR STACK B UNDERGROUND f"'X/ —O (REQUIRED) \ REQUIREMENTS r (� 11301.41 r. �/ �7 \ I FLOOR DRAIN W R.T. • Q O �I TYPICAL O (�O INTERCONNECT MIN. FLOOR DRAIN SIZE NEED NOT BE GREATER d—""� \ 1 THAN 3" DUE TO REQUIREMENTS OF SEC.915.3 • DOWN STREAM —� � .-/9 O � OF THIS VENT I FOR FIXTURE UNIT VALUES SEE TABLE I304.3 ,: 0 6" MIN. FOR TOTAL OF 96 FIX. UNITS TWO(2) PIPE SIZES LARGER THAN REQUIRED BY TABLE. ' O 1305.2 COMBINATION WASTE AND VENT IF COMBINATION WASTE AND VENT SYSTEM DRAINS INTO A SYSTEM 13 IJ SOIL OR WASTE STACK ON UPPER FLOORS SIZE COMBINA. " ` TION WASTE&VENT BRANCH TWO(2)SIZES LARGER THAN Q REQUIRED BY TABLE 1305.3 • 1 O FOR THIS JOB ALL FLOOR DRAINS Z.FLOOR SINKS MIN.SIZE DRAWN BY FLOYD W.DIMON, JR., yO 3"(S F.U.EACH)TABLE 1304.3 FOR OTHER FIX.UNIT RATINGS SEE TABLE 1304 CHIEF PLUMBING INSPECTOR, u # .2 BIRMINGHAM,ALABAMA N•Ty DRAWING NO.6 SEE SMALL SCALE DRAWING NO. I FOR ENTIRE SYSTEM. RELIEF VENTS A I. B MAY CONNECT TO MAIN I J SIZE FOR FIXTURE UNIT LOAD AND HORI- /r E VENT ABOVE FIXTURES ON FLOOR ABOVE. '+- ZONTAL LENGTH.SEE 20%FACTOR, 1421.5. .F4 Yi } RELIEF VENT REQUIRED AT MAIN VENT MUST EX. k 2'•0" C A I B ONLY WHEN FIX- TEND UNDIMINISHED I TURES OR BRANCHES IN SIZE, SEE SECTION I (�� CONNECT AT C OR D, 1403.3. SIZE FOR ALL RELIEF VENT REQUIRED, A SEE 1306.1. CONNECTING FIXTURE I 1415.1. I 1 1UNITS-TABLE 1421.5. I I 45• .� I-F B I� -. OFFSET. ... 2'-0" D MAIN VENT. FIXTURE BRANCH. _- �( Y BRANCH VENT. --1 �M ■— - - —/� `� F$.1� RESENT. �{ MAIN VENT WASHED I COMMON VENT 1410.2 11�- BUIIDING SEWER STARTS T I 10'•0" FROM OUTSIDE COMMON VENT 4" MINIMUM I I BY SMALL FIXTURE. SIZE IN NO CASE SMALI- FIXTURE DRAIN 3'• I i ER THAN LOWER FIXTURE I I WALL. OR ONE SIZE LARGER THAN MINIMUM FOR 1 I I DRAIN. I I _ C.O. WATER CLOSET. UPPER FIXTURE DRAIN. /- Y� r 1 I I� I 1 C.O. 1 ��� , • . >��Etr�arr I 4—C.O. t4 Wag `'4"F. 46 •,•.. •rv• • >rr 1..!.` E/"-I.,; : CQLSGri>rll7i C> G'R7:57c:dl.IFC• 4� MINIMUM, IJ10.2 "' y �4 4" FIXTURE DRAIN. c.o. 1t J r L—/I I I DRAWN BY FLOYD W. DIMON, JR., P E 1 BUILDING DRAIN. CHIEF PLUMBING INSPECTOR, BRANCH Of BUILDING DRAIN. ��1-E..:r d yl-' BIRMINGHAM, ALABAMA DRAWING NO.4 • J•••••- STACK VENT. VENT STACK FOR MINIMUM 512E SEE 1421.4. {{,,..,, �°'+ •l MAIN VENT,SEE I SEC.1403. E/ A BATTERY OF NOT MORE THAN 8 FIXTURES • SIZE AS FOR A MAIN VENT ON A BRANCH MAY BE VENTED BY A CIRCUIT OR SOIL STACK IF SMALL- OR LOOP VENT 1415.1. FOR SIZE SEE SEC. I VERTICAL ANGLE I••i- ER, 141 8.3. 1421.4 1 1421.5. I REQUIRED,1415.3. I I I I - - FIXTURE BRANCH TOTAL LENGTH FULL SIZE I TABLE 1305.3. YOKE VENT I BRANCH VENT. FOR OFFSET I RELIEF, 1 1418.3. I rF__ _ _ — .--�L_ _ _L-.� _ __ .� _. L,4 _ _ _E..,� _ _ _ I VENTS, I I I BACK, 1408 INDIVIDUAL I I I F1. TO 1---11-1 I I 1410.1. I I I I If I l--Ir+ _l �,-\�I I M I r'`' v—+:n-`' I ;I 8 /i �T +T I 'L 1.1 +/ 1/I I -� FIXTURE BRANCH FOR MAXIMUM / 1 &r Y../ FIXTURE UNITS&SIZE,SEE TABLE- 1305.31. SEE SMALL SCALE DRAWING NO. I FOR ENTIRE DRAWN BY FLOYD W. DIMON, JR., SYSTEM. CHIEF PLUMBING INSPECTOR, BIRMINGHAM, ALABAMA DRAWING NO.2 • ■ ci 0 - ) k|+ -V�2 01%_ biiiu( } \ § i _ yti k IEIHH\ • ! 2§§ >. 2 $ . III��) ` ` } \• r.4 0 -I iii . - \\\ \\} ° § \ _ \ ;=i - ° / 4 \ ) t - E !@z /z[ / MI z \ } /i - / za, / § -°° • II '1 O / | /}\ . § ( w * 0 - 0 0 \ � i ® 0z� } ) ) / ,, ° /z _, \ VII_ _ __ �_ � ®\^ » 2 , \ !� _ _ }\ )2 , _ \ \ g� M ! _ k� : !` • k / ;, |/\ 22 §�' I -I ; � ��_�°i - 2-� r--= / -�� \ -- -,�— —�TJt— //&d__W I / ) / § � , - :i . , Z� \ z � Z z - ° , z } Z2z/ /Z // i7/ hZIiV 110 L £ - / I /- 7 / ..0------15 i \ S) i'`||13 _ ell A CI —I--\ m A m \.-) D m Z ,�'----;r ----1 n 5 c \ L D G 41110 . Di cP 1 Ln n O Ir v 0 1 p ' n 1 ___ I D I • --'1 -- 1 I z -'l m 1 I No0 —� 1 m.2 1 m° I I • 1 w A 0 I z- I --a - g i < C. O D f I ~n I l y -� T 1 D m 1 m I I m I I m ---4 1:11 Z Il I I • 1 -- _ s 0 I -7 1 m I >C A m I r-�iL---- I --•� so g l n rn -ZI t _ •----I G - "� 1 u -----I ' i 1 £ I 1 - I ---1--I I & O ---'1 I 1 ^ 1 m I n D •p -__� I ---I a" 1 I 1 a u_ _ I I 1 ; • _4 o -.4 i 70 f4-', Z I 'CI I I n I ,, I I IA < — --1 --1 2 I I ---� oc - I � 1 In -- --I = w 0 I Rm° I 1 r, I I •- off c I �° I I --I N a - --+ �V- -L 1 -�� I 1 L A › co m g H _ r E O Z ----i zo o zo i m x 2 A O D v O�° T. T z0 S s p z A 8 C z n 8 W 2 O p 0 8 0 0 GI O _ CS O • O SEE SMALL SCALE DRAWING NO. I FOR ENTIRE SYSTEM. SIZE FOR NUMBER OF BLOWOUT FIXTURES REQUIRE INDIVIDUAL VENTS, BATTERY VENTING NOT PERMITTED. ir FIXTURE UNITS ABOVE (---'1 OFFSET YOKE VENT I\ - I— — I I y,•l L'1 — REOI"ECD I si———.TL—— — M It (li—T3 F� ``1I`_�-l' I SEC T'C'N5 .L• t i 13(',�5 6 I I I I I I I 1 I SIZE OF EACH SECTION I 141 F J I I I I 1 I I I I I OF VENT BASED ON FIX. I BlOW00T I I TURF UNIT LOAD. 4r MAXIMUM' I I WATER I I I I I 1 FROM I I C LOST T. I I • I • , �T I� I I VERTICAL I V- J TO PREVENT I I r \I 1 I I FOULING. I I I #' • • • • I 1 \ I I RELIEF VENT REQUIRED. SEE 1306.5 I & 1418.3 SIZE FOR(MAIN VENT). OFFSET OF MORE THAN 45•FROM I VERTICAL SIZE AS FOR A BUILDING 2''0' DRAIN, 1305.2,COLUMN p, AIDA1 _ I NO HORIZONTAL BRANCH I CONNECTION, 1306.5. NO HORIZONTAL SIZE FOR OFFSET AND TOTAL BRANCH CONNECTION FIXTURE UNITS ON STACK. —� (--- -�--1►� 13065. r---iv-- _ • r I I I I 1 1 I 1 I I I 1 1 DOABLE Y I I TYPICAL. I I 1 I I DRAWN BY FLOYD W. DIMON, JR., I I I \I I ,.L CHIEF PLUMBING INSPECTOR, I - - BIRMINGHAM, ALABAMA VENT FIXTURES BACK TO BACK IN BATTERY,1413.4, DRAWING NO 3 J W ill" J r 3>P71 01.N1 03103^0Md S3N11 101 Ni w I w ;x: J Q 12(1 uj CI W 0 f a l!` S \ cc L. W _J � a � D - 0 D J Q >. z �'i O 0 I _ i H D o z cD = u; � ! ! . ~ 0 ° I 0 W 17a i6 i Q �,° ? � V z ■■ � Qf Z 4 aw "-'• 41 W N JI = ` a- ,. m -J n g ,�i c� Cr) d w0 °; „ ,, 11,`j 0 o 0 'i W U L O i I 1 W W X a Q Ir) 2 1 t '" W a \_oa J -- --- J v__...„ -lily_ __ _ __ _t___ ___ 1 c.) -"_ ( 1114a3ci .1(1OH11M . ; 3N1-1 1,1.213d10cid 2J3A0 0N31X3 01 ION 3:)1103 ) 39V11O3 i I i Z . o Z1 r w z (1.- w m P 0 W iY W > 2 J 1- w = 4 w r Cr 3NI1 M01d M0138 4 y o 'i J Cl) E 1VO OOS NY Hl SS31 ION O E )INVIOI1d3S a 2 W k' Nr z. $ tr- 1 =�7� , O� O J 0 o z � � �� W o LL.w J <I I r �% •4 Z II 1 w p CM CD •I > ^Fte W - o iH! i I Q W / 1 U 11 J J V_ w 0 C t 1-iy, 4 > o 1 I W Q. O Y 4 `� ' , 4 W z 1 I ► `= o } V 4 CO o 1 4 i ' .`. cr, O w .J I I tL -53 , ... . u) 1 isto�- �11 a Z CL Ca J O " 0 4• 9a `�■ \���jj� a Li. o IMF U- 0 le � Y � . n 14 U) 0 t CC CO W Q 0 C)% H- �:40 I._ W O LIMMONMIMI. i ,c6 ■ OM••• r 3N11 Ali 3d021d �, , ^ � .a 6=0" — /Voxirnurn /O=0'"n ///ox/ anorrt I '• 1 4 ril 4" 3_0" 4" 2'O" 4" /y /- • _ r ► /%//7/,urn t0,0" _ I 4.11 - . I C/conou/ `` °P il MINI i 110 ^ 00'..;;1 '411 1 ii ((i(L I (I./7/Y • `Grafe c.. 1�'e/' /Ye�per°for-a�/©ns �'C/ ut A• � �..a A 4:44 I b,_ 7J •,.f Cast /r.20 Sol/ Pb ' and f iYf/;gs • Main Wa.Pfe Z474 ••,,,, *7 ',%t1 I/ ,..,....... 1 H__j,_J!,i i I _ 41" 3.0" It 7,0„ I�., 4 c,_�„ s_.� SECT/O/Y PLRN Of" cgreN 5R5/t/ ;'02 • 617/e17ueS d YYF'..5hlegCk'5 . a/�: sd /-" • ... 36 ... 1 Valve required N� Check valve. 5 Gate or Globe valve) .. Q . •''....Drains....''''''' ..'. PIPE LINES UPTO & INCLUDING 1" • N°••� ' •••..(A 6.. 2 valves required • e, Y' Check valve...., �, W •,,.• _2 Gate or Globe valve ,f••''� ...,_ ....� z 0 _c • �.✓✓._. .Drains.. . ' :: ..... 4 PIPE LINES : 14", I—"' & 2" A Sketch showier watts Vac. Relief Valve No.36 used in combination wi+h check valve For back s►phonage in lawn sprinkling systems. t ' • �N CHAPTER XVI • NATURAL GAS PLUMBING* 1601 Testing and Inspection. 1601.1 Testing Procedure. (a) When gas piping installations are completed, the system shall be tested for tightness by means of a mercury gauge... The test shall be to the entire satisfaction of the Plumbing Inspector. The piping shall be tight under a pressure of not less than 10 inches of mercury column. (15 minutes) . (b) The Plumbing Inspector, after ascertaining that the installation and appliances comply with this code, shall certify those facts to the Gas Company. 1602 General Regulations. 1602.1 Now Material Required. All pipe used for installation, extension, alteration, or repair of any gas piping shall be new, black steel, copper or plastic, free from splits, internal obstructions or other defects. Burred ends shall be reamed to the full bore of the pipe. All fittings shall conform to the type • of pipe used. All materials shall meet the requirements of the applicable standards as listed in Table 505, Materials Standards, or the Standards listed in this chapter. 1602.2 Outside Gas Lights. Type "K" or "L" copper or polyethelene tubing may be used for underground piping to outdoor appliances such as gas lights, gas grills, incinerators, etc. Polyethelene tubing shall be manufactured in accordance with requirements for PE 3306 tubing in specifications for plastic gas pressure tubing, pipe and fittings. ASTM Designation D-2513-66T. * The provisions of this Chapter apply only to installations served by natural gas. Where liquefied petroleum gas. (LPG) is used this chapter should be disregarded and such liquefied petroleum gas_ installations shall be made in accordance with the regulations of Articles 60-52-2 and 6053, Revised Civil Statutes of Texas, 1925 (as amended 1951). The polyethelene extrusion compounded from which the tubing is made shall meet the requirements of Type III, Grade 3, as described in ASTM D-1248-60T, Specifications for Polyethelene Molding and Extrusion Compounds which are referred to in CS255-63. The tubing shall be homogeneous throughout and free of visible cracks, holes, foreign inclusions or other defects. It shall also be uniform in color, opacity, density and other physical properties. This material shall • be connected in accordance with manufacturer's recommendations. 16 - 1 1602.2 Underground Service Lines. • Service lines underground shall be black steel pipe protected against soil corrosion with an approved type protective coating with line or recessed couplings. Coating shall extend 6" above ground and shall be installed according to manufacturer's recommendations. Minimum size 11 inch. 1602.3 Welded Joints. Welded joints may be used wherever practical in such cases of industrial and commercial installations where piping of 2-inches and larger is specified. 1602.4 Approved Stop and Hose Cocks. All stop cocks and hose cocks used in connection with gas house shall be of a type designed and approved for use with natural gas. Fittings 3 inches and smaller shall be of malleable iron but cast-iron fittings may be used in sizes above 3 inches. 1602.5 Bushings. Bushings shall not be permitted. Reducing couplings may be used to reduce pipe size. 1602.6 Concealed Piping. Unions, gland or compression-type joints, running threads, and right • and left couplings shall not be used on concealed gas. piping. When necessary to insert fittings in existing piping which has been installed in a concealed location, the piping may be re-connected by the use of a ground joint union with the nut "center punched" to prevent loosening by vibration. 1602.7 Insulated Connections. All connections between ferrous and non-ferrous piping, except appliance connections, shall be made by the use of dielectric.. couplings or unions. 1602.8 Pipe Supports. All house piping shall be securely fastened to floor joists or sills with either galvanized pipe straps or pipe hooks, or with perforated pipe straps, and in such a manner as to prevent pipe from sagging and becoming trapped. The following maximum_ spacing o.f. supports shall be used: 1/2 inch pipe 6 feet 3/4 inch or 1 inch pipe 8 feet 1-1/4 inch or .larger. pipe (horizontal) 10 feet 1-1/4 inch or larger pipe (vertical) each floor 1602.9 Proximity. to Electric Wire. No gas pipe shall be run closer than six inches. to any electric wire • unless such electric wire be inside a conduit. 1602.10 Branch and Extension Piping. Gas must not be supplied from a smaller pipe to a larger one. 16 - 2 1602.11 Underground Pipe and other Concealed Locations. . No gas piping shall be built into or embedded_ in- any brick, stone, masonry, or concrete (except fire place valves) and no such piping shall be installed in or on the ground under any building or structure..and all exposed gas piping shall be kept at least 6 inches above_grade,_except as set forth in paragraph 1602.12, 1602.15A and 1602.15B. 1602.12 Underground House Pipe. When it is necessary that a house pipe be laid underground, the under- ground portion including joints and risers shall be protected against soil corrosion with an approved type protective coating and shall be drained to an accessible and suitable drip. 1602.13Accessibility of Concealed Piping. Gas piping shall not be run in floor, or through..heating, cooling, or ventilating ducts, elevator shafts, furnaces, refrigerating rooms, drying ovens or in any place where proper ventillation. cannot be continuously provided. 1602.14 Ditch for Gas Pipe. Gas piping shall not be run in the same ditch with..water, sewer, or any other utility line. A lateral clearance of not less than 2 feet shall be maintained. Gas piping shall not be located in cinder fill. Minimum depth • 14" at meter and 24" at property line. 1602.15 Gas Piping in Floors. Where the Plumbing Inspector determines that there is no way to avoid the installation of piping in solid floors, then one of the following methods of installation, when approved by the Plumbing. Inspector, shall be followed: (a) House piping may be installed in a casing of iron pipe with rightly sealed ends and joints. The casing_ hall extend. at least 2 inches beyond the point where the pipe emerges from the floor. Where required, the casing shall be vented to the outside atmosphere and/or coated as specified in Paragraph 1602.12. (b) House piping may be installed in a channel in the floor. Such channel is to be suitable covered_so as to permit ready access to the piping and prevent the entrance of corrosive materials, or it may be filled with some noncorrosive material which can be removed with a minimum of damage to the floor. (c) Paragraphs 1602.15A and 1_602.15B apply to gas pipe in solid floors, walls or ceilings. Gas pipe in stud walls, ceilings or floors of joist construction need not have any protective covering. 1602.16 Joint Compound. • White lead or other suitable joint compounds shall be used sparingly and applied only to the male threads in making up joints on gas house piping. 16 - 3 1602.17 Three-Way Valves. • Three-way valves shall not be permitted. 1602.18 Defective Pipes or Fittings. Repair of split or.faulty-pipe or_fittings shall not be allowed. 1602.19 Location of Meter. Lone Star Gas Company shall decide and designate the type of meter to be set and where the meter is to be located. In no instance shall the plumber select a meter location without first consulting Lone Star Gas Company. See illustration. 1603 Pipe Size for Gas System. 1603.1 Table 1 - Maximum Length of Pipe in Feet. Number of 1/2 3/4 1-1/4 1-1/2 2-1/2 1/2 inch inch inch 1 inch inch inch 2 inch inch 3 inch openings pipe pipe pipe pipe pipe pipe pipe pipe 1 27 50 70 100 150 200 300 400 2 50 70 100 150 200 300 400 3 24 70 100 150 200 300 400 4 50 100 150 200 300 400 • 5 6 35 100 150 200 300 400 60 150 200 300 400 8 45 120 200 300 400 10 65 200 300 400 13 42 175 300 400 15 120- 300 400 18 90 270 400 20 70 210 400 23 55 165 400 25 45 135 330 30 80 200 35 60 150 40 50 125 50 80 65 50 75 35 1603.2 Sizing Pipe Systems - For Known Demand. In cases where the demand in cubic feet per hour of the various appliances are known, Table 2 shall be used for determining the size of house piping required. • 16 - 4 1603.3 TABLE_2_- Minimum Size.Where. The Demand.and Maximum Length are Known. • Length Diameter of Pipe in Inches of Pipe 1/2 3/4 1 1-1/4 1-1/2 2 3 4 6 8 in Feet Demand ,in Cubic Feet per Hour 15 76 172 345 750 1200 2480 6500 13880 38700 79000 30 55 120 241 535 850 1780 4700 . 9700. 27370 55850 45 44 99 199 435 700 1475 3900 7900 ..23350 45600 60 38 86 173- 380 610 1290 3450. . 6800. 19330 39500 75 77 155 345 545 1120 3000 6000 17310 35300 90 70 141 310 490 1000 2700. 5500 15800 32250 105 65 131 285 450 920 2450 . 5100. 14620 29850 120 120 270 420 860 2300 4800 13680 27920 150 109 242 380 780 2090 4350 12240 25000 180 100 225 350 720 1950 4000_ . 11160 22800 210 92 205 320 660 1780 . 3700 10330 21100 240 190- 300_ 620 1680_ 3490_ 9600 19740 270 178 285 580 1580 3250 9000 18610 300 170 270 545 1490 3000. 8500 17660 450 140 226 450 1230 2500 7000 14420 600 119 192 390 1030 2130 6000 12480 1603.4 Sizing Pipe Systems for Unknown Demand. In cases where the rating.is .not known, the capacity given. in the following table may be used. Such demand_ shall be determined in cubic feet per hour by • dividing the manufacturer's B.T.U. input rating of the appliance by 1,000. 1603.5 TABLE - 3 Approximate Maximum Gas Consumption for Some Common Appliances. Input BTU per Appliance hr. (Approx.) Range, domestic, 4 top burners & 1 oven burner 62,500 Range, domestic, 4 top burners & 2 oven burners 82,500 Range, domestic, 6 top burners & 2 oven burners 107,500 Hot plate or laundry stove, domestic, per burner 9,000 Room heater, domestic, radiant type, per single radiant 2,000 Room heater, domestic, radiant type, per double radiant 4,000 Water heater, automatic instantaneous: Capacity: 4 gal. per minute 150,000 6 gal. per minute 225,000 8 gal per minute 300,000 Water heater, domestic, circulation or side arm 25,000 Refrigerator 2,500 For automatic storage water heaters and other appliances, the input should be determined from the manufacturer's rating. 1604 Stoves and Other Appliances. • 1604.1 Prohibited Location of Water Heater. No water heater which depends on the combustion of natural gas for heat 16 - 5 shall be installed in any room used or designed to be used for. aleeping purposes, bathroom, clothes closet, or in any closet or other confined space opening into any bath or bedroom. (For exceptions see Paragraph 22.8.1) 1604.2 Location of Appliance Stops. Each and every gas stove, range, cooking stove, water heater, and other gas consuming appliance shall be_ provided-with a, lever handled stop cock located in the riser above the floor, and readily accessible at all times. 1604.3 Appliance Connections. (a) Gas connection to stoves, ranges, cook stoves, water heaters and other appliances, shall be made by rigid metal connections, except that American Gas Association approved flexible metal may be used for connections for small portable heating appliances, provided there is no cock on such portable heating appliance. (b) Non-portable appliances such as central heating,_water heating, and similar equipment shall be connected_to the gas piping with rigid pipe or by approved semi-rigid tubing not more than 6 feet in length. (c) Hot plates, clothes dryers, room heaters, refrigerators, domestic gas._ranges, and similar_.equipment, shall be connected to the gas piping with rigid pipe, approved. semi-rigid_tubing_or_ approved_ appl.iance. connectors of flexible metal tubing and fittings._ _.When a semi-rigid-tubing connection or a connector of flexible metal tubing and fittings is used, it shall connect to • an outlet in the dame room as the appliance. The length of the connector shall not exceed 6 feet. The connector shall be installed so as to be protected against physical damage. 1604.4 Prohibited Connections. The connection of an appliance_with any type of gas_.hose_ is prohibited, except when used with laboratory, shop, or ironing.,equipment- that requires mobility during operation. Such connections. shall have the shut-off or stop cock installed at the connection.. to. the. building.piping.. Where gas hose is used, it shall be of the minimum practical length, but not to exceed 6 feet and shall not extend from one room_ to another nor pass through any walls, partitions, ceilings, or floors. Under no circumstances shall- gas_ hose be concealed from view or used in a concealed location.. Only listed gas hose shall be used. Listed gas hose shall be used_ only in accordance with the terms of its listing. Gas hose shall not be used where it is likely to be subject to excessive temperatures (above 125° F.) . 1604.5 Canopies and Vents in Hotels, Restaurants, etc. (a) Ranges, hot plates, etc. , used in hotels, restaurants, and hamburger stands where gas is used for fuel, must be provided:.with canopies properly vented into brick, tile or metal_flues. extending to open air at least 18 inches above the roof. (b) Vent pipes from canopies may connect with a chimney flue in attic if 0 flue is provided with an approved= liner; or may extend through the roof to open air- at least 15 inches above the roof and terminate with an approved cap. 16 - 6 (c) Wood partitions through which vent pipes pass must be protected by a thimble with a proper air space, except that no vent pipe shall pass through any closet or pantry used for the storage of clothing, household goods of • any combustible material. 1604.6 Draft Diverters Required. Water heaters and gas appliances having_pilot_burners:_must be provided with down draft devices above the fixtures in_ the_vent,-near- the appliances. 1604.7 Size of Vent and Flue_ Connections. Furnaces and water heaters_must_be provided with vent and flue connections at least as large as the vent connection on the furnace or water heater and extend to open air at least 15 inches above the roof and terminate with an approved cap. 1605 Listed Appliances and Accessories. 1605.1 Defining the Word "Listed". The word "listed" used in connection with appliances and accessories throughout the present text refers to appliances and accessories which are shown- in- a list published by an approved nationally_recognized testing agency*, qualified and equipped for experimental testing, and maintaining an adequate periodic inspection_ of_ current.production_ of listed_models and whose listing states either_ that_the_appliance or accessory.. complies with nationally recognized safety requirements_ or has been tested_and found safe for use in a • specified manner. 1605.2 Types of Gas. It shall be determined. that_ the..appliance. has_been_designed for use with the gas to which it will be connected._ . No attempts shall be made to convert the appliance from the gas specified_on_the rating_ plate for use with a different gas without- consulting,the--local- gas- company or the manufacturer for complete instruction. * The American Gas Association, Inc. Laboratories_and. Underwriters' Laboratories, Inc. are such nationally recognized testing agencies. 1605.3 Permissible Temperatures on Combustible Materials. All gas appliances and their flue or vent connectors shall be installed so that continued or intermittent operation will not create a hazard to persons or property. They shall not, during operation, raise the temperature of unpro- tected combustible walls, partitions, floors, or ceilings more than 90° F above normal room temperature when measured with mercury thermometers or conventional bead type_ thermocouples. 1606 Air for Combustion. 1606.1 Ventilation Requirements. • Appliances shall be installed- in-a location in which the facilities for ventilation permit satisfactory combustion of gas and proper venting under 16 - 7 normal conditions of use. While all forms of building construction cannot be covered in detail, this requirement may usually be_met. by application of one • of the following methods in ordinary building construction. (a) In buildings of conventional_frame, brick, or stone construction with- out enclosed appliance rooms, basement storm windows, or tight stair doors, infiltration is normally adequate.. to provide_ air for combustion and draft hood dilution. (b) Where appliances are installed_. in a confined space within a building adequate air infiltration, provisions shall be made_ for supplying this space with air for combustion and ventilation. This -maybe-accomplished through use of_two permanent openings freely communicating_ with interior areas of adequate infiltration or by compliance with provisions of Item C. Where necessary, continuous ducts having cross-sectional areas equal to the openings shall be utilized to communicate with the source of air supply. The minimum dimension of rectangular air ducts shall be not less than 3 inches. (c) Where appliances are installed in a confined space within a building of unusually tight construction, air for combustion_ and ventilation must be obtained from outdoors or from spaces freely communicating_with the outdoors. (Crawl space, attic, or open air.) Under these conditions, there shall be two openings having a combined free area of not less than one square inch per 1000 BTU per hour of input rating. One opening shall be near the top of the enclosure and one near the bottom. . These openings shall be of approximately equal area and shall communicate with the selected source, or sources of adequate air supply, by ducts. Ducts shall be continuous and of the same-cross-sectional • area as the openings to which they connect. The minimum dimensions of rectangular air ducts shall. be_not less than 3 inches. 1607 Pressure Regulators. 1607.1 Venting Requirements for Pressure Regulators. Gas appliance pressure regulators requiring access_ to the atmosphere for successful operation shall_be equipped with a_.vent pipe leading into the combustion chamber adjacent to a. constantly burning_ pilot, unless con- structed or equipped to limit the escape of gas_.from.. the vent opening in the event of diaphraghm failure to. not-more than 1.0 cu. ft. per hour of a 0.6. sp. _ gr. gas at_ 7 inches water_ column. pressure._ . The vent terminal shall be located so that the escaping- gas-will. be. readily. ignited from the pilot flame and the heat liberated will not adversely affect the operation of the thermal element. The terminus of the vent shall_ be securely held in a fixed position relative_ to,. and. approximately_ l/2 inch below, the pilot flame. 1608 Water Heaters. 1608.1 Prohibited Installations. Water heaters shall not be installed in bathrooms or bedrooms. However, listed water heaters of the automatic storage type may be installed as a replacement in a bathroom, when specifically authroized_by the Plumbing • Inspector, providing they are properly vented and are supplied with adequate combustion air. 16 - 8 1608.2 Location. 410 Water heaters shall be located as close as practicable to the flue or vent. They should be so located as to provide short runs of piping to fixtures. When water heater is installed in garage, heater shall be enclosed. 1608.3 Clearance. Listed gas-fired water heaters shall be positioned in relation to combustible construction with a minimum clearance in accordance with Table 22.8.4. In no case shall the clearance be such as to interfere with the requirements for combustion air and accessibility for servicing. See Paragraph 22.6.1. Un- listed water heaters shall be installed with a clearance of 12 inches on all sides and rear. Combustible floors under unlisted water heaters shall be protected in accordance with the Plumbing Inspector's instructions. 1608.4 Minimum Clearances for Listed_Gas-Fired Water Heaters. Type of Heater** Nearest Part of Jacket Flat Side Type A 6 - - Type B 2 - - Type C -- Flush ** Type- A. - Miscellaneous (including circulation tank,_ instantaneous, uninsu- lated underfired) . Type B - Underfired, insulated automatic storage heaters. Type C - Type B units with one or more flat sides and tested for instal- lation flush to wall. 1609 Central Heating Boilers and Furnaces. 1609.1 Independent Gas Piping. The gas line shall be a separate line direct from the meter to the boiler or furnace, unless the existing gas line is of ample capacity. Any contem- plated use of existing gas piping shall be verified. 1609.2 Manual Main Shut-Off Valves. Where a complete shut-off type automatic pilot system is not utilized, a manual main shut-off valve shall be provided ahead_ of all controls except the manual pilot gas valve. Where_ a: complete shut-off type automatic system is utilized, a manual main shut-off valve shall be provided ahead of all controls. A suitable manual valve shall be provided for shutting off the main burner gas independently of the pilot gas. A union connection shall be provided downstream from the manual main shut-off valve to permit removal of the controls. 1609.3 Clearance. Listed central heating boilers. and_ furnaces shall be installed with clearances not less than specified_in. Table 22.9.4, except that appliances listed for installation at lesser clearances may be installed in accordance • with their listings. In no case_ shall. the clearance be such as to interfere with the requirements for combustion air and accessibility. 16 - 9 1609.4 Minimum Clearances for Listed Central Heating Boilers_ and Furnaces. Jacket Projecting Type of Sides Flue Box or Appliance Above and Rear_ Front Draft Hood Boilers 6 6 18 6 Furnaces 18* 6 18 6 * A vertical clearance of 6- inches may be used with warm air furnaces equipped with mechanical means to circulate- the. air with an_approved- temperature limit control that cannot be set higher_ than 250° F. 1610 Floor Furnaces. 1610.1 Installation. Listed floor furnaces may. be- installed. in. combustible- floors. Unlisted floor__furnaces shall not be installed in combustible floors. 1610.2 Manual Main Shut-Off Valve. A separate manual main shut-off valve shall be provided ahead of all controls and, a union..connection shall be provided:.downstream from this valve to permit removal of the controls or the floor furnace. 1610.3. Combustion Air. • Fixed ventilation by means of a duct or grille arranged to supply air from a permanently ventilated attic, underfloor space, or.. open- air, shall be pro- vided to any confined space which_ encloses- the floor_ furnace. The duct or grille shall be screened and have a free area at least twice the free area of the vent collar of the floor furnace or one sq. in. per 1000 BTU per hour of gas input, whichever is the greater, and shall be installed in such a manner as to insure proper combustion. 1610.4 Placement. The following are requirements for properly placing the furnace or furnaces to serve one story: (a) No floor furnace shall be installed in the floor of any aisle or passageway of any auditorium, public_hall, or place of assembly or in an exit-way from any such room or space. (b) Walls and Corners - with the exception of wall-register models, a floor furnace shall not be placed closer than 6 inches_ to the nearest wall, and wall_ register models shall not be placed closer_ than 6 inches to a corner. (c) Draperies - the furnace shall be so placed that a door, drapery, or similar object cannot be nearer than 12 inches to any portion of the register • of the furnace. 16 - 10 (d) No door or doors that can be closed shall be permitted between the floor furnace location and the controlling thermostat. 1610.5 Clearance. The lowest portion of the floor_furnace-shall_have at least a 6-inch clearance from the general_ ground- level, except that where the lower 6-inch portion of the floor furnace is sealed by the manufacturer to prevent entrance of water, the clearance may be reduced to not less than 2 inches. When these clearances are not present, the ground_below: and to the sides shall be excavated to form a "basin-lik&'. pit. under the furnace so_ that the required clearance is provided beneath the lowest portion of the furnace. A 12-inch clearance shall be provided on all sides except the control side, which shall have an 18-inch clearance. 1610.6 Access. Provision shall be made for access to the floor_ furnace by means of an opening in the foundation wall of at least 18 by 24 inches, located at some convenient point, and a clear and unobstructed passageway to the floor furnace of at least 18 inches high by 24 inches wide. 1610.7 Seepage Pan. Whenever the excavation exceeds. 12 inches or water seepage is likely, a watertight copper pan, concrete pit, or other suitable material shall be used. A copper pan shall be made of not less than 16-ounce-per-square-foot sheet cooper. The pan shall be anchored in place, so as to prevent floating, and the walls shall extend at least 4 inches above the ground level, with 12 inches clearance on all sides except the. control side, which shall have 18 inches clearance. When the equipment_is sealed by. the manufacturer to meet this condition, the pan_ or pit may be_ ommitted_if_ not- required for maintaining a dry condition for service access. 1610.8 Wind Protection. Floor furnaces shall be protected, where necessary, against severe wind conditions. 1610.9 Upper Floor Installations. Listed gas floor furnaces may be installed in_ an upper floor provided the furnace assembly projects below into a utility room,_ closet, garage, or similar non-habitable space. In such installations, the floor furnace shall be enclosed completely (entirely separated from the- non-habitable space) with means for air intake to meet._the provisions of Paragraph. 22.10.3 with access facilities for servicing..on the_control side, with minimum furnace clearances of 6 inches to all sides and bottom, and with the enclosure constructed of portland cement plaster on metal lath or material of equal fire resistance. 1611 Duct Furnaces. • 1611.1 INdependent Gas Piping. The gas line shall be a separate line direct from the meter to the duct furnace, unless the existing gas line is of ample capacity. Any contemplated use of existing gas piping shall be verified. 16 - 11 1611.2 Clearance. • Listed gas-fired duct furnaces shall be installed with clearances of at least 6 inches between adjacent walls, ceilings, and floor of combustible construction and the appliance projecting flue box or draft hood, except that duct furnaces listed for installation_ at lesser clearance may be installed in accordance with their listings. _In no case shall the clearance be such as to interfere with the requirements for combustion air. See Paragraph 22.10.3. Unlisted duct furnaces shall be installed with clearances to combustible construction in accordance with the requirements: for central heating furnaces and. boilers, Paragraph 22.11.3. Combustible floors under unlisted duct furnaces shall be protected in an approved manner. 1611.3 Erection of Furnace. A duct furnace shall be erected and firmly supported_ in. accordance with the manufacturer's instructions. 1611.4 Accessibility. The installation of duct furnaces shall be such as to make_ them accessible for servicing. 1611.5 Circulating Air. Circulating air shall not be taken from the same enclosure in which the furnace is located. • 1611.6 Duct Furnaces Used with Air. Conditioning Systems. Duct furnaces, when. used_in conjunction with-.an_ air_ conditioning system shall not be located downstream from_.the evaporator coil. 1612 Appliance and Equipment Vents. 1612.1 Appliances Requiring Vents. Vents shall be required_ on_floor_ furnaces, suspended_heatig- units, insert wall furnaces, boilers, AGA_ appliances_ having down_draft_diverts, duct furnaces, attic furnaces, below the floor heating units,..watar.. heaters-fl (and other gas fired appliances designed_to be used_with a vent) . 1612.2 Type of Vents. Such vents for equipment having. n. hourly. BTU input-.rating...of 750,000 or less shall be constructed_ of approved double wall metal pipes having an exterior_ casting of galvanized_iron_or. aluminum_.and- an._ interior lining of aluminum or non-corrodible_.metal_and separated- by..not less than 1/2-inch of dead air space, or other listed type of vent approved by the Plumbing Inspector, except that water heaters shall be vented with double-wall metal pipe. • 16 - 12 • 1612.3 Supports: All vent pipes shall be supported by and secured to rigid structural members in such manner as to prevent vertical or hori- zontal displacement. Vent stacks shall extend continuously through the roof to a point not less than 15 inches above same. 1612.4 Industrial or Public Buildings: In buildings used for commer- cial, industrial or public pirposes, equipment having an hourly BTU input rat- ing of more than 750, 000 shall be connected to stacks designed and built ac- cording to accepted engineering standards and approved by the City Plumbing Inspector. approved 1612.5 Vent Caps: An effectivavent cap which does not reduce the cross-sectional area of the vent outlet and also protects against wind-induced down drafts, rain and snow shall be used. • 1612.5 Vent Flashings: Sheetmetal flashings of aluminum, copper or galvanized iron shall be used. 1613 VENTING REQUIREMENTS (The following tables apply specifically to double-wall Type B gas vents constructed of metal, including all fittings, from the draft hood outlet to top of vent. ) 1613.1 Individual Vents: Total Vent Height is the vertical distance between the draft hood outlet and the vent top. The position or rise of a con- nector, or the location of an offset, has no effect on the total vent height. Length of lateral is the horizontal distance or offset between the draft LEMGTN toTiL hood outlet and the final vertical LATERAL NEiGNT portion of vent. See Figure A. /72_ I APPLIANCE • Figure A 16 - 13 • 1613.2 Procedure for Using the Individual Vent Table: To determine the proper vent size for an individual vent, apply the Table on the following page as follows: (1) Determine total vent height and length of lateral, based on appli- ance and vent location, and height to top of vent pipe. (2) Read down the total vent height column at the left to a height equal to or greater than the total vent height. (3) Select the horizontal row for the appropriate length of lateral (Zero for straight vertical vents). (4) Read across to the first column which shows a capacity equal to or greater than the appliance nameplate heat input, except for room • heaters, floor furnaces, and vented recessed heaters, in which case stop at the first value which is equal to or greater than 1. 4 times the nameplate heat input. (5) If the vent size shown at the top of the column containing the correct capacity is equal to or larger than the appliance draft hood, use • the vent shown by the Table. (6) If, however, the vent shown is smaller than the draft hood size, see Paragraph 22. 13. 4. • 1613.3 . Example; A typical individual venting project is shown in Figure B. The furnace has a 150, 000 BTU capacity and a 6-inch draft hood. Y0i Procedure: ion Go down the Total Vent Height column to 1111111111111111is'W 20-foot height and across on the line for 10-foot lateral. 150, 000 BTU capacity is found in 5-inch size column. 228, 000 BTU capacity is shown in 6-inch 110 size column. Figure B 5-inch size is adequate because total height exceeds 10 feet (See Paragraph 22. 13. 4). 16 - 14 • Regardless of the size vent shown by the Tables or Calculator for such appli- ances, do not connect four-inch draft hoods to three-inch vents. TABLE 6 L�u b� a G�','�c4�i�`4 'i5 car rt� � �6'i 0 L t. MAXIMUM CAPACITY, Thousands of STU Per Hour' TOTAL LE1tSTN • D SNT UTERAL 3" 4" 5" . 6" 7" C" ' 14 12" I 14"I 16 13"' 201 22" 24.1 O 45 00 125 103 245 320 500 720 I 910 1200 1630 2000 2430 2900 2' 30 59 09 137 103 250 405 560 i 740 050 1220 1520 1003 2160 4' 4' 23 55 03 133 165 243 305 510 130 950 1215 1510 1620 2170 ._� 0' 27 53 64 125 175 232 377 1 525 703 1 930 1100 1505 1810 2160 0 45 65 141 215 245 370 570 850 1170 1530 1060 { 2430 1 2950 3520 g. 2' 35 67 105 157 211 205 455 659 000 1110 1480 1050 2220 7670 6' 32 61 143 140 205 213 435 630 070 1150 1470 1620 2210 2550 12' 20 55 01 131 100 255 403 610 840 1110 1430 1 1795 2180 2600 O 57 94 155 235 320 415 650 910 1320 1140 2220 2154 3360 4010 • 2' 40 75 171 107 241 322 515 745 1020 1340 1100 2110 2560 3050 04 a' 35 03 169 105 227 303 400 720 110.3 1320 1610 2010 2530 3030 16' 28 51 0 143 203 281 450 635 959 1760 1600 2035 l 2470 2060 ` 0 53 103 4 103 255 345 450 720 1050 1450 1925 2450 3050 ,1010 4450 O• 2' 42 11 120 153 213 355 550 650 1130 1460 1000 2340 2640 3303 10' 36 70 115 175 245 330 525 795 1000 1430 1840 2280 2780 3340 20' -- GO 101 154 211 360 4005 I 735 1030 1350 1100 2230 2120 3250 • 0 53 112 107 255 390 525 040 , 1240 1720 2210 2000 3620 44105300 15• 2' 48 93 150 225 316 414 615 905 1350 1110 2260 2800 3410 4000 15' 37 76 120 158 215 373 610 905 1250 1675 2150 2700 3360 3900 30' — CO 101 169 243 328 553 845 1130 1550 2050 2620• 3210 3840 O 61 119 202 301 430 515 930 1350 1901 2570 3250 4050 4980 6000 2' 51 103 165 249 • 346 470 755 1100 1520 2003 2510 3200 3910 4700 20' 10' 44 09 100 229 321 443 110 1045 1460 1940 2503 3130 3830 4600 20Y 35 13 134 2105 295 410 665 900 1390 1860 2430 3050 3760 4550 30' — 63 120 105 273 300 625 945 1210 1100 2330 2560 35511 I 4390 0 64 128 220 336 415 650 1030 1550 2110 2920 3710 1 41511 5357 T 1060 3 0• 2' 54 117 165 200 303 535 005 1310 1600 2300 3050 I 3810 4;4. Sop 20 03 154 237 341 413 134 1185 1650 2200 2010 3650 400 5310 40' — — — 200 258 415 105 1075 1520 20,0 2701 34400010_42700010 5140 O G3 132 223 353 500 665 1140 1730 2400 3230 4160 5210-1-1-560—T- 210 I 650 1tE0 • 2' 52 113 1013 293 420 579 050 1420 200'0 2600 3420 430 j 3260 6320 40 20' — f3 101 201 371 516 CGO 1310 1830 7460 3200 4050 5C0111 6070 40' — — — _ 223 _ 333 460 105 1205 1710 I 2310 3020 3640 4780 5820 O — 1003 2:3 373 535 730 1250 1920 2700 i 3650 4740 6000 7300 ' 9010 • --2' 1;3 213 331 470 650 1(00 1605 2259 3020 3920 40'00 6130 7400 GO 30' — — 110 275 397 555 530 1440 2050 2100 3640 4100 5730 1003 6 0' — — — — 334 415 630 1285 1570 2560 3300 4330 5420 , 6550 O — — 203 304 550 755 1250 2320 2000 1 3000 5100 6453 1007 3750 CO 40,• 2' -- -- 211 350 405 033 1145 1740 2460 I 3320 4310 54511 6740 8200 ti 0' — — — 215 40.4 570 003 1515 2100 2000 3920 5003 0213 1650 CO' — — — — — — 650 1420 2000 2750 3640 4600 5150 728 O — — — 40'0 500 170 1310 2050 2950 40510 5300 6700 6600 10.300 Or 2' _ _ — 375 510 700 1170 1020 2550 3500 4600 5800 1700 M SO' 405 515 107 15`0 2250 3100 4050 5300 6600 8100 100' 670 1430 2050 2850 3150 4930 0100 7500 NOT S, • A Se.step 4 of paragraph 22.1 3.2 D "—" Where no capacity is given, vent may be liable to both spillage and condensotion. C Regardless of altitude,always design vont for sea level nomoplato opplionce input. D "0"lateral applies only to a vortical vent attached to a top outlet draft hood. 16 — 1.5 1613.4 Combined Vents. A "combined" vent is a venting system for two or more appliances at one • level attached to a common vent. "Least Total Height" is the vertical distance from the highest appliance draft hood outlet in the system to the top of the vent. This is one fixed_dimension- for_any one system regardless of the number or placement of appliances in the system. "Connec.tor_Rise" for any appliance is the vertical distance- from its- draft- hood- outlet to the point where the next connector joins the system.- -A "Common Vent" is the portion of the vent- ing system above the lowest inter-connection. When the common vent is entirely vertical, it is called a Vertical-or. "V" type. Otherwise-- the common vent is a Laterial or "L" type. 1613.5 Procedure for Determining_Each_Vent Connector Size. (1) Determine the Least Total_Height for the system. (2) Determine the Connector Rise for each appliance. (3) Enter the vent connector Table at the appropriate Least Total Height. Continue across on the line for- the-.first appliance Connector Rise to the nameplate BTU rating (or the next_higher rating)_for_ that_ appliance. Read the connector vent size for that appliance at the top of this column. (4) At the same Least Total Height, repeat the- procedure for the Connector Rise and BTU rating for each appliance. CAUTION: Never use a connector smaller than draft hood outlet size. • 1613.6 Procedure for Determining_Bize_of- Common Vent. (1) Add together all_appliance_BTU- input ratings. to_.de.termine the total BTU rating. (2) Enter the Common Vent Table at the same Least Total Height used in Paragraph 22.13.6. (3) Continue across._ either_on_ the "L" line or.on- -the "V" line as indicated in Paragraph 22.13.5. (4) Stop at the first value which is equal to or_greater_ than the total BTU rating. (5) Read the size- of the Common Vent at.the_top_of this column. CAUTION: Regardless of table_ results, Common Vent must always be at least as large as the largest connector._ _If both connectors- are_ the same size, the common vent must be at least:.one size larger. • 16 - 16 • 1613.7 Example: _4 • 15 FEET ONE FOOT } LEAST CONNECTOR 15 FEET 15 FEET LEAST I40A00 TOTAL NF'I1T: TOTA4 RISE TOTAL (EAST COMMON VENT HEIGNT t TEE RCONNECTION HEIGHT o1�.1�, HEIGHT 5 INCH 511[••1NCN : TNREE FEET 512E � �„'„""'�CONNECTOR RISE WATER 4 5INCN� 1 NEATER SIZE WATER 55,000 NEATER FURNACE 55,000 FURNACE 105,000 I 105.000 Figure A Figure B Figure C Figure A shows a typical two-appliance combined-vent system. To de- termine common vent and individual connector sizes, use the following proced- urea: • (1) Enter the Vent Connector Table at a Lead ` a7 Yeight of 15 feet and a Connector Rise of 1 foot. Read across to the BTU rating next higher than the water heater rating. This is the column showing 53, 000 BTU. At the top of this column a 4-inch connector size is designated for the water heater. See Figure A, above. (2) Enter the Vent Connector Table at the same Least-Total Height, (15 feet) but this time for the furnace Connector Rise of 3 feet. Read across to 111, 000 BTU (the next higher rating above 105, 000 BTU). At the top of this column a vent connector size of 5 inches is designated for the furnace connector. See Figure B, above. (3) The sum of the two ratings is the 140, 000 BTU. Enter the Common Vent Table at the same Least Total Height (15 feet) and on the "V" line. For a total capacity of 144, 000 BTU, the column heading di- rects a 5-inch common vent for this system. See Figure C, above. • 16 - 17 1 • TABLE 7 le,.%r 3 4t.'1 b V il.W 1- 'U 1 ii .41,01',4, V LaNtri C O N a 911 4.11 CT r i2 E.re MAXIMUM INPUT TO VENT CONNEC)OR, Thousands of BTU P.r Hour LEAST 00016[0108 - - -- MSO IIS[ _.--------.- ----- f:G6NT 3' 4� 5,.6,. 711_ 0„ , 10' 1_2" 14' i ": 2" i' 24 • 43 63 :9 173 •115 212 i 392 534 6.5 130 1 10".00 I 1328 1513 4' I 2' 29 51 63 116 153 1 703 ' 322 ! 404 663 787 I 6:'3 1270 , 1410 ' 1760 3' 32 50 90 131 176 . 232 554 524 ' 600 0'S 1 1125 1350 16'0°, ' 2;74 1' 23 46 72 174 147---t-185 169 416 511 755 1 955 II0A 1i2511T00i 6' 2' 31 55 65 1 4 ( 153 ' 220 345 4• : 653 853 1 1630 1335 1 1610 1020 3' 35 62 91 i 13' i 137 , 243 3E6 I 555 1 740 957 i 1225 1510 ; 1930 1 2180 1' 27 49 18 u, 149 154 309 , 433 001 I 805 : 1015 1255 1520 1810 S' 2' 32 57 I :"9 12 175 1 773 1.`.�7 i 516 I 653 1 910 1150 1420 i 1710 ' 2350 3' 3 5 E1 101 14■ 1 I?1 i:9 402 530 70 , 1033 1305 1610 ; 1950 ' 2320 I' 28 50 18 113 155 T 'r.J.3 314 451 642 , E40 ; 1050 1310 158-51-16':7 10. 2' 33 59 93 13' 112 1 231 i 372 533 130 955 ! 1105 i 1490 1103 11',9 3' 31 87 104 I`0 1 7115 1 7:18 411 RI 821 l 1080 ! 1310 1 1690 2040 i 2430 I' 20 53 I 63 i 129 I 143 I 214 333 4''0 697 1 910 1150 1420 1110, 2.050 15' 2' 35 63 09 142 1",1 i 257 1 371 - 598 790 j 1030 j 1305 ' 1110 1950 1 2320 • 3' 40 71 111 i 110 216 i 213 L 444 613 093 1175 1 1485 I 1635 1220 1 2640 -- - - _ - I' 31 I 59 87 i 125 j 171 224 I 311 ;.3 140 995 1225 1 1510 I 1030 I190 20' 2' 37 04 I 104 14$ 1 707 1 275 , 414 °73 640 ' 1095 ! 1385 1 1710 i 2070 i 2470 3' 42 7i, i 116 I 1G7 I 12i; I :CO ! 466 I 672 1 952 ' 1245 • 1575 1945 - 2350 ! 2000 1' :3 5? 1 93 1 130 I32 1 235 372 535 805 1 1059 1330 1645 1997 ', 2370 30' 2' 39 70 115 151 215 1 i;: . 639 832 910 1197 j 1503 i 1855 . 2240 2610 3' 44 I 79 i 124 170 247 311 ; 4E 112 1035 1350 i 1110 ' 2110 2550 + 3040 j �._ 1 - -t----_+_- 1' 35 62 97 I 140 1f'i 1 24 3x9 560 , 650 1110 1 1405 i 1735 . 2100 1 15513 4110 -40 2' 41 73 115 1;5 175 77, 401 £55 I 904 i 1280 15^.0 LOSS 2700 1830 3' 40 83 I 129 101 753 ! 331 520 1 743 1 1160 j 1435 ' 1820 2240 2710 i 3230 1' 37 66 104 15') 204 1'1 if 417 ! GO0, 926 ; 1210ff 1530 1654 • 2230 ; 2120 60 2' 44 79 I 123 171 I 242 I 316 i 494 712 1050 ' 1370 1 1140 2150 ' 2590 : 3080 3' 50 i 89 , 138 200 II 272 355 i 555 800 1 1198 1 1565 1 1980 ` 2450 1 2960 i 3520 T.AB1.1E 8 CCie .3i",.V1.:4 VENT TAUL c MAXIMUM COMBINED INPUT TO EACH SECTION OF COMMON VENT, Thousands of BTU P., Hour LEAST --- - - - —-- TUPJ.i Y: 1 - NUSNT TTPE' 3•' 1 4" ' 57 6,' ! 7" , ^' ; 10" . 12• 14" 16 i 18' - 20..• 22•• 24 --+------y------� I -+ l — I 45 70 181 130 160 220 471 4 663 180 960 1 1220 1445 ; 1760 4, V — I 56 6c 121 1 117 225 ■ 355 1 5171 i 698 , 900 1135 1 1400 I 1650 2020 L - j 51 81 I 117 In0 210 J.5-; 460 -+------, ---..-- 1 100 925 1110 1445 1660 1000 6 V - 65 • Ina 1 147 217 2,:o 470 557 1 815 1005 { 1345 1660 I 1970 I 1397 l - 51 : 9 1 130 ' in 710 1 3 5 ; 570 793 1035 1310 1 1670 1 1920 1 2330 8• V ' 13 . 114 I 163 1 223 ' 2`,•3 j 495 152 912 1190 I 1510 ' 1660 I 2200 7680 -- 63 7 'xi—T-142 -4 193-r 250 - 335 ± 506 I 665 1 1 1 3 0 ±1430 ; 1765 -2090 I 2540 10 V - 79 124 170 4 117 315 ' 495_ 9 712 995 I300 j 1645 1 2030 , 2400 1970 15, 6 — 73 114 164 714 200 i 450 f, 6 1 1003 , ,1315 1665 2060 I 1430 2950 V - 91 , IM 769 280 305 565 675 1158 ! 1510 1910 I 2360 ' 2133 ' 3460 1 - 21 : 111 181 . 150 325 - Sin , 771 - 1126 1470 + 1870 r2300-1 2120 3310 7 616 1290 - 1690 77140 ' 264n - 3120 1 3600 V - Ip2 MI 129 710 405 £t0 ` -, -�.----y-^--- 1 - -- 1 - 141 - 711 1•9 315 7 5r5 6" f 1371 1135 f 7193 1710 ! 3210 3900 30 V - 118 185 7.76 360 410 740 1015 1525 1970 • 2520 ' 3110 . 3680 4480 �0•I 1 I - 105 164 236 320 f--410 660 915 f 1497 1950 1---2410 1--3050 3610 4390 V I_ 131 103 795 405 525 ' 820 116:, 1115 1240 2030 3500 4150 ; 5050 --- - --• -- -- ---— ---'- --. ---'- ---- -,-..-_+ .._--_ -1- -- -- -- 191 215 314 490 165 IlIM 1150 2280 ' 2890 3570 4230 5050 LO , V — - 749 • 314 . 463 . 612 955 131,1 1010 • 1670 ' 3370 • 4100 4350 ' 5900 0 j 4 - - -6�- • 308 -419 548 0% F 1131 1950 2550 : 3236 ' 3980-,-4720- 980^ 4120 5150 __ V -- - - 395 524 615 1810 1540 2250 2930 3110 . 4590 5420 6600 -4---- ' - -----------+--------------- ------T------L------------- 100 I e - - 453 591 325 1335 2140 2790 3530 4360 5160 6200 • V - - - . - 566 140 1156 1670 2450 3200 4050 5060 5920 1700 'Fo,d.F;nii,on of l and V,s..Paragraph 22.1 3.S - 16 — 18 1614 Electrical Connections. • 1614.1 National Electrical Code. All electrical connections between gas appliances and the building wiring shall conform, at least, to the National Electrical Code, ASA Cl, 1956. 1614.2 Electric Ignition and Control Devices. No devices employing or_depending_upon an-electr.ical_current shall be used to control or ignite a gas supply if of such a character that failure of the electrical current could result in the escape of unburned gas or in failure to reduce the supply of gas under conditions which would normally result in its reduction unless other means are provided to prevent the development of dangerous temperatures, pressures or the escape of gas. 1614.3 Electrical Ground. The gas piping shall not be used as a grounding electrode, for an electric fuse panel, telephone circuit or lightening arrester, nor shall electric circuits utilize gas piping, casing of control, panels or other metal parts in lieu of wiring. This provision shall not apply to low voltage control and ignition circuits, and to electronic flame detection device circuits incorpo- rated as part of the appliance. 1615 Compliance with Accepted Standard. 1615.1 National Standard. All work installed under. the Gas- Fitting Section of this. Code shall comply to the standards of the National_.Board_of Fire Underwriters for the instal- lation of gas piping and gas appLianCes. in buildings as recommended by the National Fire Protection Association,_ a_ pamphlet normally referred to as NBFU Pamphlet No. 54. Except where_ specifically. changed. by Table within this Code, all provisions of NBFU Pamphlet No. 54 shall apply to work installed under this Code. 16 - 19 CHAPTER XVII • DEFINITIONS ACCEPTED STANDARDS: Accepted standards_ are_ the_standards cited in this Ordinance, but may include additional standards approved_ by the Plumbing Appeal and Advisory Board with the concurrence of the Plumbing Inspector. AIR MIXER: That portion of an- injection- (Bunsen)- type burner into which the primary air_ is introduced. APPLIANCE - GAS: A gas appliance_ is any device which utilizes gas fuel to produce light, heat or power. APPLIANCE FLUE: The flue passages with the appliance. APPROVED: Approved means accepted_or acceptable under an applicable specification stated or cited in this Code. AUTOMATIC GAS SHUT-OFF VALVE: A device so constructed that the attainment of a temperature or pressure in the medium being heated_ in excess of some predetermined limit acts upon a: chemical, metallic or diaphragm element in such a. way as to cause the gas: to. the. appliance to be shut off and remain off. AUTOMATIC IGNITION: Automatic ignition shall be interpreted as means which provide for ignition of the gas at the burner when the gas burner valve controlling the gas to that burner is turned on, and will effect re-ignition • if the flames on the burner have- been.. extinguished. by means: other than closing the gas_burner valve. AUTOMATIC PILOT: Consists of an automatic pilot device and pilot burner securely assembled.in_fixed.. functional_relationship. AUTOMATIC- PILOT.DEVICE:_ A device_employed.with gas_ burning- equipment which will_ automatically shut off the gas supply to the. burnar being served by either direct or indirect means- when_ the pilot flame is extinguished. The pilot burner may or may not be constructed integrally with the device. AUTOMATIC PILOT, COMPLETE SHUT-OFF_ TYPE: An automatic pilot for shutting off, automatically, the gas supply to the main burner and pilot in event of pilot or gas failure, and also for preventing_ the gas from being turned into the main burner unless the pilot is lighted. BOILER: A self-contained gas burning appliance for supplying hot water or low pressure system, primarily intended_ for domestic_and commercial space heating application. BOILER BLOW-OFF: A boiler blow-off is an outlet on a. boiler to permit emptying or discharge of sediment. BRANCH LINE - GAS: Gas piping_which conveys gas from a supply line to the appliance. BTU: Abbreviation for British Thermal Unit which is the quantity of heat re- quired to raise the temperature of one pound of water one degree Fahrenheit. 17 - 1 BURNER: A device for the final conveyance of the gas, or a-mixture of gas and • air, to the combustion zone. CENTRAL HEATING GAS APPLIANCE: A vented gas-fired-appliance comprising the following classes as. defined. herein.:. boiler,, central- furnace, floor furnace, or vented recessed heater. CHIMNEYS: A. Factory-Built Chimneys. -. chimneys that are_factory made, listed by a nationally recognized testing agency, for venting.. as appliances, gas incinerators, and solid_or liqued fuel burning appliances. B. . Masonry Chimneys -- field constructed chimneys built in accordance with nationally recognized_ codes or standards. C. Metal Chimneys. - chimneys made of metal of adequate thickness, galvanized or painted_unless suitably corrosion resistant, properly welded or riveted and built-in accordance with nationally recognized codes or standards. CLOTHES DRYER: A device used to dry wet laundry by means of heat derived from combustion of fuel gas. COMBUSTION: Combustion, as used herein-, is the rigid_oxidation of fuel gases accompanied by the production of_heat, -or heat and light. COMBUSTION CHAMBER: The portion of an appliance within which combustion occurs. COMBUSTIBLE CONSTRUCTION: By combustible construction is meant a combustible wall or combustive surface constructed_.of wood, composition, or of wooden studding and lath and plaster. COMBUSTION PRODUCTS: Constituents resulting from the combustion of a fuel with the oxygen of the air, including the inerts but excluding excess air. CONCEALED GAS PIPING: Gas piping which, when in. place..in the finished build- ing, will be hidden from view by the structure. CONSUMER'S GAS PIPING: All gas piping and fittings_ ex.tending-.from the point of delivery to the outlets.,. exclusive_of piping, meters, regulators, valves, fittings, etc. owned by the gas company. DEMAND - GAS: The maximum_ amount- of gas required per unit of time, usually expressed in cu. ft. per hr. , required for the operation of the appliance or appliances supplied. DRAFT HOOD: A device built into an appliance, or made a part of the vent connector from an appliance, which is designed to (1) insure the ready escape of the products of combustion in the event of no draft, back draft, or stoppage beyond the draft hood; (2) prevent a back_ draft_ from entering the appliance; and (3) neutralize the effect of stack action of the vent upon • the operation of the appliance. 17 - 2 DUCT FURNACE: A furnace normally installed in distribution ducts or air conditioning systems to supply warm air for heating.. This definition shall apply only to an appliance which depends for air circulation on a blower not furnished as part of the furnace. FLAME SAFEGUARD: A device which will automatically shut off the gas supply to a main burner or group of burners when the means of ignition.. of such burners becomes inoperative, and when flame. failure- occurs--on the burner or group of burners. FLOOR FURNACE: A completely self-contained unit furnace suspended from the floor of the space being heated, taking, air for combustion from outside this space, and with means for observing flames and lighting the appliance from such space. FLUE COLLAR: That portion of. an- appliance designed_ for the attachment of the draft hood or vent connector. FLUE. GASES: Products of combustion plus excess air in appliance flues or heat exchangers (before the draft. hood_ or draft regulator). FURNACE -. CENTRAL FURNACE.: A self-contained, gas burning appliance for heating air by transfer of heat of combustion through metal to the air, and designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location. GAS COMPANY: The organization operating the gas distribution system. • GAS HOSE: A gas conduit which depends for tightness on, joint packing, or on any wall structure other than that formed by a continuous one-piece metal tubing member. GAS VENTS: A. Type B Gas Vents. Factory made gas vents listed by a nationally recognized. testing agency. . for venting listed or approved appliances equipped to burn only gas. B. Type B-W Gas Vents. Factory made gas vents listed by a nationally recognized testing agency for venting_listed or approved gas-fired vented recessed heaters. C. Type C Gas Vents. Vents constructed of sheet copper not less than No. 24 U.S. Standard.Gage_or_ galvanized iron of not less than No.20 U.S. Standard gage, -or.other_ approved noncombustible corrosion- resistant material. HOTEL AND RESTAURANT RANGE: A. gas_ appliance of the_floor type providing for top cooking, roasting, baking. or broiling, or any- combination- of top cooking with any of these other functions and not designed_ specifically for domestic use. • LIMIT CONTROL: A device responsive_ to_ changes in pressure or temperature or liquid level for turning on, shutting-off, or throttling the gas supply to an appliance. 17 - 3 LUBRICATED PLUG TYPE. VALVE: A valve of the plug and barrel type provided with means of maintaining a lubricant between the bearing surfaces. • MAIN BURNER: A device or group of devices essentially forming an integral unit for the final conveyance of gas or a mizture of gas and air to the combustion zone, and on which combustion takes place to accomplish the function for which the appliance is designed. MAIN BURNER CONTROL VALVE: A valve which controls the gas supply to the main burner manifold. MANIFOLD: The conduit of an appliance which supplies gas to the individual burners. MANUAL GAS VALVE: A valve (or cock) of the plug and barrel type designed for use with gas, operated manually to control or shut off the supply of gas. MAY: The word "May" is a permissive term. METER: The instrument installed to measure the volume ofgas delivered through it. OFFSET: An offset in a line of piping is a combination- of. elbows or bends which. bringsone- section. of the pipe out of line but into_ a. lime parallel with the other section. OUTLET: A threaded connection or bolted flange. in- a pipe_ system to which a • gas_burning. appliance. is-or_may_ be_attached... Outlets:must.be located in the room or space where the appliance- is-er_may be installed. PILOT:. A small flame which is utilized to ignite the gas at the main burner or burners. PRIMARY AIR: The air_ introduced into a burner and which mixes with the gas before it reaches the port or ports. REGULATOR - GAS PRESSURE: A device_ for controlling and maintaining a uniform gas supply pressure. RELIEF DEVICE: A safety device designed to forestall the development of a dangerous condition in the medium being heated, by._relieving either pressure temperature, or vacuum build-up in the appliance: RELIEF. OPENING: The opening provided in a draft hood to permit the ready escape to the atmosphere of the flue products from the draft hood in the event of no draft, back draft, or stoppage_beyond_ the draft hood, and to permit air into the draft hood in the event of a strong chimney updraft. ROOM OR SPACE HEATER: A self-contained gas-burning appliance installed in and for the heating rooms. This definition shall not include unit heaters, central heating gas appliances., garage_heaters,_ nor vented_ recessed heaters. SAFETY SHUT OFF VALVE: An automatic gas control valve of the. "on" and 'off" • type which is actuated by the limit or protective controls or similar emergency devices. 17 - 4 SECONDARY AIR: The air externally supplied to the flame at the point of combustion. • SEMI-RIGID_ TUBING: A gas conduit_ having_ semi-flexible_metal wall structure. SERVICE PIPE: The pipe which- brings_the gas from the gas main to the point of delivery. SHALL: The word "shall" is a mandatory term. SHUT OFF VALVE: See definition of Manual Gas Valve. SPECIFIC GRAVITY: As applied to gas, specific gravity is the ratio of the weight of a given volume to that of the same volume of air, both measured under the same conditions. STOP COCK: See definition of Manual Gas Valve. THERMOSTAT: An automatic device actuated by temperature changes, designed to control the gas supply to a burner, or burners, in order to maintain temperatures between predetermined limits. UNIT HEATER: A self-contained gas_ burning appliance of the fan type, designed for the delivery of warm air directly into the space in which the appliance is located. VALVE: See definition of Manual Gas Valve. • VENT: (formerly Flue or Vent). A passageway, vertical or nearly so, such as a chimney or gas vent, for exhausting--vent- gases to the outer air. VENT CONNECTOR: (Formerly Flue or Vent Connector)_ That portion of the vent systemwhich connects. the-gas appliance- to the. gas_vent or chimney. VENT GASES: (Formerly Blue Gases) Products of combustion- from- gas appliances plus excess air, plus dilution- air_ in. .the vent connector, gas vent or chimney above the draft hood or draft regulator. VENT SYSTEM - GAS PLUMBING: The gas vent or chimney and vent connector, is used, assembled to form a continuous- open passageway from-the gas appliance to the outside atmosphere for the purpose of_ exhausting vent gases. VENTED RECESSED HEATER.:- A- self-contained vented appliance complete with grilles or equivalent, designed for incorporation in or permanent attachment to a wall, floor, ceiling or partition, and furnishing heater air circulated by gravity or by a fan directly into the space to be heated through openings in the casing. Such appliances shall not be provided with duct extensions beyond the vertical and horizontal limits of the casing proper, except that boots not to exceed 10 inches beyond the horizontal limits of the casing for extension through walls of nominal thickness may be permitted. Where such boots are provided they shall be supplied by the manufacturer as an integral part of the appliance and tested as such. This definition shall exclude floor furnaces, unit heaters and central furnaces as herein defined. 17 - 5 WALL HEATER, UNVENTED OPEN-FLAME RADIANT TYPE: A room heater of the open front type, designed for insertion in or attachment to a wall or partition having fully exposed flames the heat from which is reflected by ceramic radiants or a- metal, asbestos, clay back or equivalent backwall- reflecting surface. It incorporates no concealed venting._arrangements in its construction and dis- charges all products of combustion through the open front into the room being heated. YARD_ LINE - GAS PLUMBING_ The_section.. of consumer's- piping- and fittings ex- tending from the point of delivery- to the house piping. • 17 - 6 • LOCATION OF DOMESTIC METER INSTALLATIONS • The following standards apply to single meter installation where service to a single user is involved. there two I or more customers are to be served in the same building, house type meters only shall be used and shall be set side by side against building in order that they may be supplied by a single yard line. For details of service line in- stallations and meter installations, refer to standard on those subjects. r' HOUSE TYPE METERS STREET Main in street -----• a (a) Meter shall be set at front of build- ing or at side of building within 15' i— S--Not more than 15' of front. W —1'h (b) If building is 100' or more from pro— 0' 1 'perty line, meter shall be set 1/' (I) a 100' or more inside of property line. Note: Line from meter to street to run in --0"—"---------'---" b HIi' straight line, square with street, to within 3 feet of curb.. 1I 1 Li 5 STREET I i . Main in alley or dedicated utility ease— (a) Meter shall be set 1%1' inside cus— 0 �'—in a tomer's property line or easement .a I- boundary line, provided it will be UJ o• in a protected location. U Ct W (b) If the above location is vulnerable - N to vehicular traffic or is otherwise 'a --o b unsuitable, meter shall be set at o rear of customer's building. No protected location Q I L STREET Main in special easement _ ___________-{ (a) Meter shall be set at main, provided c a l . it will be in a protected location. E H • (b) If above location is vulnerable to w 0 vehicular traffic or is otherwise un— a' • suitable, meter shall be set at rear • Q. -------. b N of customer's building. Y) . a `No protected locatio STANDARD DOMESTIC METER INSTALLATIONS e HOUSE TYPE METERS SET AT PROPERTY LINE HIGH PRESSURE LOW PRESSURE •'"� r"'•5H H -- 1om' -J ■ 1 ■ H '�;eau-�. oe 1 L o 0000 I �� oo I .. t I I `. , I i i � Ii 1 .. I 1 1 t.; FRONT VIEW FRONT VIEW' SIDE VIEW HOUSE TYPE METERS SET AT BUILDING HIGH PRESSURE LOW PRESSURE O ik 1_,,,,,..._ _ 1111, II I y f '1 - 1 o i El'Lit' — � o) i.0 .- z K '�' o r1on J Yi 1-'-r z 2' J u �� m �� ' 1' •/ v TI VI 4,7 • 4#)•••• .. FRONT VIEW FRONT VIEW SIDE VIEW . Dimensions shown below are in inches TYPE A B C I) F. F G H J K L No. 00 Emco, 150 Rockwell 11 'A 6 22 14 '/ 18 7 3% 10 13% x 1 1;4 x 1 1 % 1 No. 0 Emco, 175 Rockwell I1 % 6 22 11 ''A 18 7 '/z 10 1%x 1 1% x 1 1 % 1 511 Metric 11 % 6 22 14 % 18 7 '/z 10 1% x 1 1%x 1 1 % 1 IA IA Sprague 11 % 6 22 14 !%i 18 7% 10 1%x 1 1'/ x 1 1'A 1'A 1A Sprague Combination 11% 6 22 18 7 % 10 1A x 1 1 '/ 1 No. 1 Emco 12 M 7 23 15 ''/ 19 7 % 10 1A a 1% 1'/a 11/4 11/4 1 415 Rockwell 12 1/2 7 23 15 M 19 7'/2 10 1h a 1% 1%x 1% 1 % 1 No. 2 Emco 14 8 26 18% 22 9 % 13 M 2 x 1A 1'/i x 1% 1 % 2 108 Metric 13 6 7/8 26 18 %r 22 9 '/+ 13'/: 11/4 x 1 1%a 1 1 'A 1'/ Om208 Metric 14 8 % 26 18 M 22 9% 13 M 2 x 1A 11/2a 1% 1% 1 25B Metric 14 8 % 26 18 M 22 9 % 13'/: 2 x 1A iii a 1% 1 % 1 h No. 2 Sprague 13 7 3/16 26 18 'A 22 9% 13 3 1% 1'/ 1 % 1 14 No. 3 Sprague 12 54 6 25/32 • 26 18 '/t 22 9% 13 ' 2 a 1/, 1A a 1% 1'A 2 750 Rockwell 17 11 30 21 26 11 15 2 x 1% 1'/4 x 11/4 1 % 2 30B Metric 17 11 30 21 26 11 15 2 x 1M 114 a 1% 1 ' 2 35B Metric 17 11 30 21 26 11 15 2 x PA 1'r4 x 1A 1 % 2 • No. 5 Sprague 17 10 7/8 31 22 27 11 15 2 2 a 14 I 1 4 2 • Dotted lines denotes material furnished by consumer r MANIFOLDED HOUSE TYPE METERS MANIFOLDED HOUSE TYPE METERS SET AT PROPERTY LINE SET AT BUILDING LINE L A M M H p. —� H .a- ',-,, 4-� < •? 4- • '1-1, Fa � - , P• .i .'s----s-. i/ t :' I 1 �y2O ;;;--.,s,e — j- S y z� 1 '' k-4 HZ'_ ----,,Y N. C r- rB F -+ I .�i IMO ni rat amid II MI rep g ' • -- ■ • pm L°L� III Z MI 1' ' W 0 0 7.-""--N). ! o' 0 U 1 z �� o ___) . .____ 5 A �i� 1 G i \\\`,y\\�7A\\\VVI-_sl WZA\\\\`et:,<(4 N..0 W 'W /<< \1, We # LAW -� C. FRONT VIEW FRONT VIEW SIDE VIEW If manifold installation is served from I.P. lines, distance from ground to top of stopcock is 20" and Company furnishes all fittings between regulator and meters. Dimensions shown below are in inches TYPE A B C D F G H J K L M No. 00 Emco, 150 Rockwell 15 6 22 27 7 '/ 10 14 x 1 1 4 1 1'4 x 14 x 1 14 x 1 No. 0 Emco, 175 Rockwell 15 6 22 27 7 4 10 14 x 1 1 4 1 1'4 x 11/4 a 1 11/4 a 1 • 5B Metric 15 6 22 27 74 10 14x1 14 1 14x14x 1 14 x 1 IA Sprague 15 6 22 27 7 4 10 14 x 1 1 4 1 14 x 14 x 1 14 x 1 1A Sprague Combination 15 6 22 7 4 10 14 x 1 1 14 a 14 x 1 14 No. 1 Emco 15 7 23 30 7 4 10 14 2 1 4 2 x 2 x 14 2 a 114 415 Rockwell 15 7 23 30 7 '4 10 14 2 1',A 2 x 2 x 14 2 a 14 No. 2 Emco 15 8 27 33 9 '4 13'/: 1'/ 2 1 h 2 x 2 x 11/4 2 a 114 10B Metric 15 6 7/8 27 33 9 '4 13%: 14 x 1 2 1 2 x 2 x 1 2 x 1 20B Metric 15 8 '4 27 33 9N 134 11/4 2 14 2 x2 a14 2 a 144 No. 2 Sprague 15 7 3/16 27 33 9 N 13 4 11 a 14 2 1 4 2 x 2 x 14 2 x 14 No. 3 Sprague 15 6 25/32 27 33 9 '/ 13 4 1% I 2 1 4 2 x 2 x 11 2 a 14 LOW PRESSURE CURB METER INSTALLATION WI - _ y 1.11111114 D c� ; �• MI col ' O � _r o i... _______ 4, ; ) 1 , I ..... II per;_a o Dimensions shown below are in inches TYPE A B C D ill5B Metric Curb 13 7 20 1 10B Metric Curb 13 34 6 20 1 No. 0 Emco Curb 13 7 20 1 '4 No. 2 Emco Curb 14 5 24 1 , Dotted lines denote material furnished by consumer If any section, subsection, clause, phrase or sentence of this ordinance or the application thereof to any person or circumstances is held invalid, such invalidity shall not affect other provisions or applications of this ordi- nance which can be given effect without invalid provision or application, and to this end the provisions of this ordinance are declared to be severable. PASSED AND APPROVED THE 19TH DAY OF SEPTEMBER, 1972. . , 41 ._.i[ . ��./✓�i MAYOR ATTEST: Cit Clerk S