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Ord 01-2024 Amending Appendix A - Subdivision and Development Regulations 01/16/2024 Ordinance No. 01-2024 Ordinance No. Ordinance amending the City Code of Ordinances, Appendix A — Subdivision and Development Regulations, to amend platting requirements and formally adopt a Pavement Design Manual to comply with regulations as set forth in Texas House Bill 3699. WHEREAS, in June 2023, Governor Greg Abbott signed House Bill 3699 related to changes in regulation of the subdivision of land (i.e. platting) and associated requirements for municipalities and/or other entities that govern platting requirements; and, WHEREAS, after receiving and reviewing the City of Code of Ordinances, Appendix A — Subdivision and Development Regulation, staff is recommending the changes as proposed to achieve compliance with House Bill 3699; and, WHEREAS, the City Council finds that the changes outlined herein will achieve compliance with these new regulations. NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF WICHITA FALLS, TEXAS, THAT: 1 . The following ordinance amendments to the City Code of Ordinances, Appendix A — Subdivision and Development Regulations - as attached herein in Exhibit 1 are adopted. 2. The City formally adopts the herein attached Pavement Design Manual — Exhibit 2. Any revisions to the design standards as set forth in the Pavement Design Manual will hereby be amended by the City Council through future ordinance amendments. 3. Further recognizes the previous adoption and codification of the Stormwater Drainage Manual as per Ordinance no. 39-2011 , adopted on August 2, 2011 - Exhibit 3. Any revisions to the design standards as set forth in the Stormwater Drainage Manual will hereby be amended by the City Council through future ordinance amendments. 4. Any amendments to the City Code of Ordinances, Appendix A -- Subdivision and Development Regulations, Pavement Design Manual, and Stormwater Drainage Manual shall be presented to the City of Wichita Falls Planning & Zonning Commission at least 90 days' prior to any modification. 5. This ordinance shall take effect 30 days after its passage. PASSED AND APPROVED this 16th day of January 2024. MAYOR ATTEST: ' t City Clerk Exhibit 1 The following Code does not display images or complicated formatting. Codes should be viewed online. This tool is only meant for editing. Appendix A Subdivision and Development Regulations Editor's note-Printed herein are the subdivision and development regulations of the city, as adopted by Ordinance Number 30-2003 on April 1, 2003. Ordinance Number 30-2003 repealed the former appendix A which pertained to the comprehensive subdivision ordinance of the city and derived from Ord. No. 2118, adopted September 28, 1964; Ordinance 2308, sec. 1, adopted March 2, 1967; Ordinance 2386, secs. 1-3, adopted Jan. 22, 1968; Ordinance 2485, sec. 1, adopted Feb. 18, 1969; Ordinance 2506, secs. 1-3, adopted June 17, 1969; Ordinance 2516, secs. 1-4, adopted July 15, 1969; Ordinance 2522, sec. 1, adopted Aug. 19, 1969; Ordinance 2572, sec. 1, adopted Feb. 17, 1970; Ordinance 2589, secs. 1-4, adopted May 19, 1970; Ordinance 2745, adopted Nov. 7, 1972; Ordinance 2752, sec. 2, adopted Nov. 7, 1972; Ordinance 2767, secs. 1-4, adopted Feb. 20, 1973; Ordinance 3197, secs. 1, 2, adopted June 7, 1977; Ordinance 3190, adopted June 16, 1977; Ordinance 3339, adopted July 12, 1978; Ordinance 3380, secs. 1, 2, adopted Oct. 3, 1978; Ordinance 3448, secs. 1-4, adopted April 3, 1979; Ordinance 3535, adopted Sept. 4, 1979; Ordinance 3578, secs. 1, 2, adopted Dec. 4, 1979; Ordinance 3579, adopted Dec. 4, 1979; Ordinance 3693, secs. 1-5, adopted July 1, 1980; Ordinance 3738, secs. 1, 2, adopted Oct. 7, 1980; Ordinance 69-84, adopted June 5, 1984; Ordinance 77- 84, adopted July 3, 1984; Ordinance 110-84, adopted Sept. 18, 1984; Ordinance 137-84, adopted Nov. 20, 1984; Ordinance 52-85, sec. 1, adopted May 21, 1985; Ordinance 64-85, secs. 1-3, adopted June 18, 1985; Ordinance 104-86, sec. 2, adopted Dec. 16, 1986; Ordinance 44-87, secs. 1, 2, adopted May 5, 1987; Ordinance 85-87, sec. 3, adopted Sept. 1, 1987; Ordinance 91-87, adopted Sept. 15, 1987; Ordinance 85-89, secs. 1-3, adopted Nov. 21, 1989; Ordinance 134-93, adopted Dec. 5, 1993; Ordinance 113-97, adopted Nov. 4, 1997; and Ord. No. 58-99, sec. 1, adopted July 6, 1999. Amendments to Ordinance Number 30-2003 are indicated by parenthetical history notes following amended provisions. The absence of a history note indicates that the provision remains unchanged from the Ordinance Number 30-2003. Obvious misspellings and punctuation errors have been corrected without notation. For stylistic purposes, headings and catchlines have been made uniform and the same system of capitalization, citation to state statutes, and expression of numbers in text as appears in the Code of Ordinances has been used. Additions made for clarity are indicated by brackets. § 1 Authority,purpose and extraterritorial application. A. The purpose of this ordinance is to provide for the orderly, safe and healthful development of the area within the city and within the extraterritorial jurisdiction of the city and to promote the health, safety, morals and general welfare of the community. B. This ordinance shall apply inside the corporate city limits and within two levels within the extraterritorial jurisdiction. Level one shall be along corridors and areas identified on a map approved by the city council, made a part of this ordinance and referred to herein by reference, as the areas most likely to experience growth in the nearest future. Level two—Development Authority shall be within the remaining areas of the extraterritorial jurisdiction. C. The limits of level one and level two will be subordinate to any past or future agreements between jurisdictions that define or redefine the boundaries of the extraterritorial jurisdiction and that would affect the boundar[ies] of level one or level two. D. The boundaries describing the limits of levels one and two are subject to periodic review and may be adjusted by the city council. E. Should a development or improvement be partially within either levels of development, the most restrictive standards shall apply to the entire development or improvement. F. Inside the city limits and within levels one and two, there shall under all situations be a plat filed with the city if located within the certificate of convenience and necessity (CCN) area, and/or where there exist a contract between outside water providers and the city. Such plat shall be provided to the Planning Division in conformance with requirements therein and herein as applicable. § 2 Definitions. For the purpose of this ordinance, the following terms, phrases, words and their derivations shall have the meanings ascribed to them in this section. Alley. An "alley" is a minor public right-of-way, which is used primarily for vehicular service access to the back or sides of properties otherwise abutting on a public street. Applicant. An "applicant" is any person or any agent thereof establishing a lot of record or proposing to divide land so as to constitute a subdivision as that term is defined herein. In any event, the term "applicant" shall be restricted to include only the owner, equitable owner or authorized agent of such owner or equitable owner of land sought to be subdivided. Block. A"block" shall be the property fronting on a street between street intersections or 1,200 feet, whichever is less. Where a street intersects only one side of a block, that side of the street shall be calculated in determining the block regardless of an intervening street. Board of adjustment. The"board of adjustment" is the board of adjustment of the City of Wichita Falls, Texas, pursuant to Chapter 211 of the Texas Local Government Code. Border lines. "Border lines" are water or sewer lines that abut one or more sides of a subdivision, but which serve other land as well as the land in such subdivision. Building setback line. The "building setback line" is the line within a property defining the minimum horizontal distance between a building or structure and the property line. City. Unless otherwise stated herein, "City" shall be city departments, and boards and commissions having purview over these regulations as applicable. "City" may also refer to the area contained within the boundary limits of the City of Wichita Falls. Commission. The "Commission" is the Planning and Zoning Commission. Comprehensive plan. The "comprehensive plan" is a plan of the city, adopted by the city council and as may be amended from time to time, that may include details related to growth, development, and city resources. Cul-de-sac. A "cul-de-sac" is a minor street having but one vehicular access to another street and terminated by a vehicular turnaround. Dead-end street. A "dead-end street" is a street, other than a cul-de-sac, with only one outlet. Development or developed. The term "developed" or "development" shall refer to those situations where water, sewer, streets or other utility, including stormwater provisions, are installed according to standards under this regulation or as may be required. Easement. An "easement" is an interest in land recorded for record that may be granted to a public, quasi public or private entity for installing and maintaining utilities, across, over or under private land together with the right to enter thereon, with machinery and other vehicles necessary for the maintenance of said utilities and that may include areas designated for access to an easement where a utility is located. An easement shall also include those areas reserved for other use that may include ingress and egress, drainage and other such utility. Engineer. An "engineer" is a person duly authorized under the provisions of the Texas Engineering Registration Act, as heretofore or hereafter amended, to practice the profession of engineering. Extraterritorial jurisdiction. Area outside of a city as defined by Texas Local Government Code ch. 42. Governmental unit. A "governmental unit" shall be the city, county, state or federal government, or other political subdivision of the state authorized to accept dedications for streets, easements and/or utilities. He. Use of the term "he" shall not be construed as gender specific. Improvement(s). An "improvement" shall be the construction of any structure or site element above the natural grade or additions to or modifications of any such structure or site element. This provision shall also include parking lots. Level of development. "Level of development" shall refer to levels one and two as defined herein. Level one and level two. "Level one and level two" shall refer to the application of standards within areas defined on a map, approved by the city council, and by reference made a part of this ordinance. Lot. A "lot" is an undivided tract or parcel of land which is, or in the future may be, offered for sale, conveyance, transfer or improvement; which is designated as a distinct and separate tract, and which is identified by a tract, lot number, or symbol in a duly approved subdivision plat which has been approved by the Commission and properly filed for record. All lots shall provide dedicated access to a public street sufficient for the projected traffic generated by the proposed development, with the exception of lots for single and/or two family residential development which shall have frontage on a public street. Lot of record. A "lot of record" is a tract of land legally recorded as a plat with the land records of the county. Master plan. A"Master plan" is a comprehensive concept plan to show the development of domestic water, sanitary sewer utilities, and storm water drainage within a proposed subdivision. The applicant's master plan shall have documentation to describe the methodology intended to be used along with the preliminary plans with sufficient analyses to verify that the requirements of the city ordinances can be addressed. On-site lines. "On-site lines" are water or sewer lines within a subdivision, or water or sewer lines abutting one or more sides of a subdivision that serve only land in such subdivision. Pavement width. The "pavement width" is the portion of a street available for vehicular traffic; where curbs are laid, it is the portion between the faces of curbs. Person. A "person" is an individual, association, firm or corporation. Plat. A "plat" shall refer to both preliminary and final plats and shall be determined by the section in which it appears. Plat, final. A "final plat" is a plat prepared by a licensed surveyor or registered engineer, bearing the same requirements as a preliminary plat, in the absence of a preliminary plat, and/or in accordance with requirements herein, which is duly acknowledged by the owners, proprietors and those that have interest in the land, or by some duly authorized agent of such owners, proprietors and interest, in the manner required for the acknowledgment of deeds or as required herein and which is to be filed for record in the office of the county clerk of the county or counties in which the land lies. Plat, minor. "Minor plat" is a final plat of four or fewer lots, and not requiring the creation of any new street, or the extension of municipal facilities. Plat, preliminary. A "preliminary plat" is a tentative drawing made by a licensed surveyor or registered engineer for inspection purposes only, showing the entire tract of land sought to be subdivided, accurately describing all of said subdivision or addition by metes and bounds, locating the same with respect to an original corner of the original survey of which it is a part and giving dimensions thereof of said subdivision or addition, and dimensions of all streets, alleys, squares, parks or other portions of same intended to be dedicated to public use, or for the use of purchasers or owners of lots fronting thereon or adjacent thereto. Public improvements. A public improvement is any water system, sewer system, or drainage system intended to be used by the public, and excepted by the Public Works Department. Public right-of-way. A "public right-of-way" is a strip of land used, or intended to be used, wholly or in part, as a public street, alley, walkway or drainage way. Residence. A building intended to be or is occupied as the dwelling place of one or more persons in which the use and management of sleeping quarters and all appliances for cooking, ventilating, heating, or lighting are under one control, and which shall include one- and two-family dwellings, apartment houses, boardinghouses and mobile/manufactured homes. Shall, may. The word "shall" is always mandatory. The word "may" is discretionary. Streets. A "street" is a public right-of-way or private access which provides vehicular access to adjacent land, whether designated as a street, highway, thoroughfare, parkway, throughway, avenue, lane, boulevard, road, place, drive, expressway, freeway, or however otherwise designated where such designation or classification may be shown on the most recent thoroughfare plan. (1) An "arterial street" is one used primarily to provide circulation to various sections of the city. (2) A "collector street" is one used primarily to provide circulation within the neighborhood, to carry traffic from minor streets to arterial streets or to carry traffic through or adjacent to commercial, industrial or high population density areas such as large apartment developments. (3) A "marginal access street" is a minor street which is parallel and adjacent to an arterial street and which is used primarily to provide access to abutting properties and protection from through traffic. (4) A local street is primarily to provide access for residential or commercial traffic. The street use discourages through-traffic where such traffic does not have origin or destination within respective residential or commercial areas. a. A "Local residential street" is a public road used primarily for access to abutting residential property. b. A "Local commercial street" is a public road used primarily for access to abutting non- residential property. Subdivision. A "subdivision" is the division of any tract of land into two or more parts. Subdivision includes resubdivision. For the purpose of this ordinance, a single lot plat shall be considered a subdivision. Surveyor. A "surveyor" is a person duly authorized under the provisions of the Texas Registered Public Surveyors Act, as heretofore or hereafter amended, to practice the profession of public surveying. Tank battery. A "tank battery" shall generally consist of multiple tanks used for the containment or storage of fuels or fuel products or by-products. A single tank may also be considered a tank battery. Thoroughfare plan. The "thoroughfare plan" is intended to address future development by reserving rights- of-way to support development, and shall be a plan adopted by the city council, and may be amended from time to time, that reflects the existing, future or functional classification of all streets, roads and highways indicated therein and the standards associated with right-of-way and paving width. Words not expressly defined herein are to be construed in accordance with customary usage in municipal planning and engineering practices. (Ordinance 20-2018 adopted 5/1/18) 3 § 3 Development Process A. T" r,''Development planst shall contain all of the features required for preliminary plate or req aired by the Planning Division and/or Department of Public Works and it shall be accompanied by the following site improvement plans bearing the seal of an engineer: 1 . Sanitary sewers.Detailed engineering plans of the proposed sewer facilities as required by the standard specifications. 2. Water.Detailed engineering plans of the proposed water facilities as required by the Department of Public Works. 3. Storm drainage.lf within level one, detailed engineering plans of the proposed storm drainage facilities as required by the Department of Public Works. 4. Streets, curbs and gutters.lf within level one, detailed engineering plans of the proposed streets, curbs and gutters as required by the Department of Public Works. [If] within level two detailed engineering plans of the proposed streets as required by the Department of Public Works. Determination of the need for curb and gutter within level two areas shall consider the density of existing development, plans or preliminary plats considered or approved within the last five years, and other such issues. A plat that includes both level one and level two areas shall require the submission of curb and gutter requirements for the entire development, or as required herein. Standards, specifications . 3.1 General- - Standards, specifications and conditions A. Staking for the proposed street construction will be provided by a competent engineer in the employment of the applicant. B. Upon completion of a street, drainage, water and/or sewer improvement as may be required, the respective governmental unit will inspect the finished work and provide the developer with a letter of approval. C. No preliminary or final plat shall be approved by the Commission and no completed site improvements shall be accepted by the respective governmental unit unless they conform to requirements herein. D. No final inspection shall be made or certificate of occupancy issued on a project unless all requirements under this regulation are installed and approved; and as defined by or under the requirements of the building permit and/or approved site plan unless approved or conditionally approved by the director of Development Services. The director of Development Services may require guarantees or commitments that development and/or improvements will occur within a specific time. E. Conformity with the city's master plans. The subdivision shall conform to the city's comprehensive plan, utility master plans, thoroughfare plan, and parks and trails master plans, or their successor documents and the standard specifications, as applicable. F. Provisions for future subdivisions. If a tract is subdivided into parcels larger than ordinary building lots, such parcels shall be arranged to allow the opening of future streets and logical future subdivisions. G. Reserve strips prohibited. There shall be no reserve strips controlling access to land dedicated or intended to be dedicated to public use. H. Suitable building sites. Every lot must contain a suitable building site unless otherwise required by the city that a lot be identified for reference and legal description where such is open space, easement, or other such situation as required by the Planning Division, Department of Public Works, Department of Parks and Recreation or other administrative department of the city as applicable. I. Suitability of land use. Land shall be suited to the purpose for which it is to be used. J. Level of development requirements. Should a development be within two development levels, the most restrictive standards shall apply. 3.2 Streets. A. General requirements for streets. 1 . Street layout.Adequate streets shall be provided by the applicant, the arrangement, character, extent, width, grade and location of which shall conform to the most recent thoroughfare plan or as required herein and shall be considered in their relation to existing and planned streets, to topographical conditions, to safety and convenience, and their appropriate relation to the proposed uses of the land to be served by such streets. 2. Relation to adjoining street system. Where necessary to the neighborhood pattern, existing principal streets in adjoining areas shall be continued and shall be at least as wide as such existing streets and in alignment therewith. 3. Projection of streets. Where adjoining areas are not subdivided, the arrangement of streets in the subdivision shall make provision for the proper projection of streets into such unsubdivided areas. Dead-end streets are prohibited. Streets projecting into unsubdivided areas shall be provided with a cul-de-sac in accordance with standards herein. The Department of Public Works may consider and authorize a temporary cul-de-sac. Such temporary cul-de-sac shall be constructed in accordance with city standards and shown on the preliminary and final plat or by separate instrument. The length of a temporary cul-de-sac shall be no longer than allowed herein. The director of public works may approve a waiver of the requirement for a temporary cul-de-sac. 4. Street jogs. Street jogs, with centerline offsets of less than 125 feet shall not be allowed. 5. Half streets. No new half streets shall be constructed unless approved by the D4irector of ublic orks. The D4irector of ublic Wworks may only approve the construction of half streets that are arterial functional classification or are four- lane divided streets. 6. Street intersections. Street intersections shall be as nearly at right angles as practicable, giving due regard to terrain and topography. 7. Cul-de-sacs. Cul-de-sacs shall not exceed 600 feet in length in residential areas and 900 feet in length in commercial and industrial areas and shall have a turn around right-of-way of not less than 100 feet in diameter in residential areas and not less than 200 feet in diameter in commercial and industrial areas unless otherwise allowed herein. The Planning Division, Department of Public Works and Fire Department shall evaluate the length and turn-around for each cul-de-sac by considering emergency access, density of residential, intensity of commercial, topography, sight distance, alternative access and other such issues. The above city departments shall have sole discretion to modify requirements herein in the interest of public health, safety and general welfare of the area and adjacent development and future development. 8. Access to arterial streets prohibited. Unless approved by the Directors of Development Services and Public Works, no residential subdivision shall be platted so that a residence fronts on or has direct access to an arterial street, highway, or highway frontage road. The directors may use the services of the metropolitan planning organization as necessary. 9. Main driveway opening on street. Each residential lot shall have the main driveway to the garage, carport, or off-street parking area opening on a local residential or collector street, except where the subdivision is platted to allow main driveway opening on the alley as provided herein. 10. Streets on thoroughfare plan. Where a subdivision embraces is adjacent to a street, as shown on the most recent thoroughfare plan, such street shall be platted in the location and of the right-of-way width indicated by the thoroughfare plan. Where a subdivision embraces an existing street or road not indicated on the thoroughfare plan, such street shall be platted in the right-of-way width indicated herein. 11 . Local residential streets. Local residential streets shall be laid out as to discourage their use by through traffic where such traffic does not have its origin or destination within the residential area. This shall not include proposals or needs to connect adjoining residential subdivisions. 12. New adjacent arterial streets. The applicant shall dedicate right-of-way sufficient in width to meet the requirements of the thoroughfare plan or as required herein. 13. Adjacent existing streets or half streets. Where the proposed subdivision abuts upon an existing dedicated street or half street that does not conform to the thoroughfare plan or requirements herein, the applicant shall dedicate right-of-way sufficient to make the full right- of-way width conform to the requirements of the most recent thoroughfare plan or as required herein. 14. Single lot subdivision. All required right-of-way dedication shall also apply to plats wherein a parcel is platted or replatted as a single lot and as required herein. 15. Street names. New streets shall be named in accordance with provisions of the Code of Ordinances and approved by the Planning Division. B. Design standards for streets. 1 . Street design shall be in accordance to the street standards developed by the Department of Public Works as approved by City Council. 2. Curb and gutter in accordance with city standards shall be required on all streets within level one unless exempted under section 94-100 of this Code. The Department of Public Works shall evaluate and may amend the need for curbs and gutters by evaluating the ownership of the roadway, plans for widening the roadway or other situations that may exist where the installation of curbs and gutters does not serve the public purpose. Curb and gutter may not be required by the Department of Public Works within a level two area. The creation of a multiple-lot subdivision or the creation of a new street may require curbs and gutters. 3. Curbs and gutters shall be installed by the applicant on both sides of all interior streets and on the subdivision side of all streets forming part of the boundary of the subdivision. An exception to boundary street dedication and paving may exist where the other side of the street is developed and/or improved and shall consider alignments and other identifiable factors, under which case there may be required a dedication and paving on one or both sides of the street. Curbs and gutters shall be constructed to city specifications. All streets shall be paved by applicant to city specifications. 4. Curb cut and driveway widths shall be in accordance with Appendix B of the Code of Ordinances. Upon approval by an authorized official of the state Department of Transportation, a 45-foot wide driveway width may be allowed on state-designated highways and frontage roads. 5. Right-of-way and pavement widths shall be in accordance with the following: a. Right-of-way and paving width shall be in accordance with the thoroughfare plan. b. Unless otherwise required or approved by the Department of Public Works, existing or proposed streets or roads within level one and level two areas not addressed in the thoroughfare plan or under other plans, shall be provided meeting city standards. If it is a state road or highway, the right-of-way and paving requirements shall be in accordance with state specifications, or where no standards or requirements exists, the minimum right-of-way requirement shall be the greater of 60 feet or as required by the county. Additional right-of-way and paving width may be required as determined by long range plans, density or intensity of development, historical traffic conditions and counts, and other appropriate factors. c. The minimum right-of-way width and paving width, if the street is not indicated on the thoroughfare plan, shall be as required on the thoroughfare plan for the type and function of the street proposed unless additional width is required along state or county roads. d. The Planning Division and Department of Public Works shall be responsible for approving the street classification and/or type by considering the type, nature, density or intensity of proposed or future land uses related to or affecting the street. Local streets that serve, propose to serve, or may serve 150 or more dwellings shall be required to be upgraded to a minor collector under standards of the thoroughfare plan. Density calculations for local streets in adjacent or neighboring residentially zoned areas shall be based on 3.5 dwellings units per acre. In evaluating the street classification, consideration shall be given to other access. e. In designing developments, the developer shall comply with the Pavement Design Manual (known in this article as the "manual"), promulgated by the city's Department of Public Works, which shall contain written policies, standards, technical design criteria, procedures, methodology, details and regulations related to determination, design, review, and approval of pavement facilities as necessary to implement and comply with the provisions of this article. The manual shall be the governing document for all design activities related to compliance with this article. Although the intent of this manual is to establish uniform design practices, it neither replaces the need for sound engineering judgment nor precludes the use of information not presented. Other accepted engineering procedures may be used to determine design criteria with prior approval of the Director of Public Works or designee. 3.2 Street Medians. 1 . Definitions. a. Medians: a strip of land, whether raised or flush, between the lanes of opposing traffic on a divided street. 2. Generally. a. Raised medians shall not be allowed except when required by the thoroughfare plan or other government agency. b. Any required raised median shall be made of solid material that requires no routine maintenance nor designed to contain vegetation including, but not limited to grass, shrubs, or trees. c. Flush medians shall have the surrounding pavement structure extended across the entire median. The flush median shall be delineated with approved pavement markings. d. Director of Public Works or designee may approve a variance to the items above where circumstances allow. C. Access management. 1 . Curb cuts on state-designated or state-controlled streets, roads or highways shall receive first approval by the state Department of Transportation. Additional approval by the Planning Division and/or Department of Public Works will consider sight visibility in relation to the posted speed of the road, street or highway, topography, roadway design and distance between curb cuts in accordance with accepted standards. 2. The distance between curb cuts on arterial streets and state-owned streets and roads shall be governed by the nature and type of land use, existing or potential for conflicts, speed and condition of the roadway, location and spacing of traffic signals, the ability for alternative access, the intended function of the roadway, and existing land uses. 3. As feasibly possible, marginal access streets or access easements shall be used for all commercial development to allow access to all properties or uses without the need to access these individually from a public street. 4. The city, county and/or state may require the closing or partial closing of any curb cut or drive opening where such creates or has the potential to create a hazardous condition. Should the opening be closed, the property owner shall provide a curb and remove the drive approach. An alternative to the removal of a drive approach may be considered by the installation of an approved barricade, generally only where affected roads or streets carry 300 ADT or less. 5. Chapter 6200, exhibit B of Appendix B, Zoning Ordinance of the Code of Ordinances, shall be considered as a guideline used to calculate the distance requirements between curb cuts and intersections. The Planning Division and Department of Public Works shall have final authority to modify conditions therein in the interest of public safety and as intended herein. 6. Section 102-40, visibility sight triangles, of the Code of Ordinances shall be considered a guide to sight visibility requirements. The Planning Division and Department of Public Works may amend requirements therein in the interest of public safety, and in consideration with the above situations, and may require the installation of acceleration/deceleration lanes, modifications or installation of medians and turning bays, and other situations that will enhance public safety. D. Subdivision access. 1 . All residential subdivisions shall have safe and reliable street access for daily use and emergency purposes. a. All preliminary plats showing 80 or more lots must be designed to show a minimum of two means of access to an existing collector or higher classification street as indicated on the Thoroughfare Plan. b. Upon final platting of 80 or more lots within a proposed subdivision or section of a subdivision, a separate connection/access point providing secondary access to an existing collector or higher classification street must be dedicated, installed, and completed according to the provisions referenced in Appendix D. of the fire code and Section 6.2 of Appendix A - Subdivision and development regulations. 3.3 Easements. A. A developer or property owner may provide or be required to provide utility easements in accordance with the following requirements: 1 . Utility easements shall be provided at the front and/or rear of all lots or as required by the Department of Public Works or utility company. 2. Utility easements shall be centered on or adjacent to a common property line of two abutting lots and shall be continuous for the entire length of the block as required by the Department of Public Works or utility company. Unless otherwise permitted by the Director of Public Works, a developer or property owner shall provide utility easements in accordance with the following minimum width standards: • 10 feet when adjacent to a street right-of-way. • 10 feet when occupied by a non-city public utility and not containing or intending to contain city utilities. • 15 feet when occupied by a city utility up to 12 inches in diameter, running between common lot lines with public right of way at end for access and not exceeding [two] lots in length. • 20 feet when occupied by a city utility up to 36 inches in diameter. • 30 feet when occupied by a city utility greater than 36 inches in diameter. • 15 feet when occupied by a city utility when placed at the boundary of a development adjacent to unowned property. This requirement may be reduced to [ten' feet if the developer or property owner is able to secure [ten] feet of utility easement from the adjacent unowned property. • Additionally, if the existing utility is constructed of any material other than PVC or a material approved by the Director of Public Works, the easement shall be an additional five feet wide when a line is buried more than seven feet in depth. The easement shall be an additional ten feet wide when a line is buried more than [121 feet in depth. The easement shall be an additional [15] feet wide when a line is buried more than [20] feet in depth. 3. Utility easements shall be approximately parallel to the frontage of the street or as required by the Department of Public Works or Ithel utility company. 4. No permanent or temporary encroachments shall be located within any easement, except fences may be placed along property lines, driveways and parking lots for ingress and egress, and sidewalks required in the City of Wichita Falls Code of Ordinances. The city may allow permanent or temporary encroachments with an encroachment agreement at the discretion of the Property Management Administrator in agreement with the Director of Development Services and Director of Public Works. 5. Lift stations shall be placed in utility easements, and must provide a five-foot clear space around all sides between the equipment and the fence, as well as a 15-foot access easement with a six-inch thick and 12-foot wide flexible base access road provided from an adjacent street to grant direct access to the pumps. 6. Any pre-existing encroachment that does not have an encroachment agreement shall obtain agreement upon notice by the city or remove said encroachment. B. Maintenance of easements shall be the responsibility of the owner of the land upon which it is located. C. Normal curb and gutter shall be required where utility easements intersect streets. D. Where utility easements are not themselves straight within each block, or if the same do not connect on a straight course with the utility easements of adjoining blocks, then an additional easement shall be provided for the placing of guy wires on lot division lines in order to support poles set on curving or deviating rights-of-way of alleys. E. The property owner shall be required to identify buried, aerial or above-ground pipelines or other buried, aerial or above-ground utility, and if such is not within an easement recorded for record shall contact the utility owner and dedicate or have dedicated such an easement and recorded and filed on a plat or separate instrument as required by the governmental unit. F. Access easements. Access easements, where allowed, shall be in accordance with the following: 1 . Residential: Access easements, where permitted, serving single-family or duplex dwellings, shall have a minimum width of 20 feet as measured from property line(s), and a minimum unobstructed paving width of nine feet. 2. Commercial: Access easements, where permitted, shall have a minimum, unobstructed paved width of 12 feet. Additional easement width may be necessary for utilities, drainage, etc. If more than one commercial lot or use is being accessed, there shall be no use of an access easement to provide primary access. The minimum width shall be 60 feet, measured from property line(s) with a minimum unobstructed paving width of 36 feet, or as required by the city. The Planning Division may consider or require an exception to this provision based on the type of development proposed. 3. All access easements shall be approved by the Planning Division and/or Department of Public Works. 4. All drive surfaces shall be hard-surfaced with Hot Mix Asphaltic Concrete (HMAC) or concrete suitable for continued use by vehicles of the type intended. The Department of Public Works may require details of paving sections, and modifications thereof, prior to plan or permit approval to ensure function and longevity for the intended use. Proposed alternatives to address the intent of this provision shall be considered on a case-by-case basis. 5. No access easement shall provide ingress or egress to or from an arterial street or highway unless approved by the Planning Division and/or Department of Public Works as part of a nonresidential development where the easement is intended to serve multiple land uses. 6. Access easements shall be maintained by the property owner(s). Should the access easement fall into disrepair and pose a hazard or undesirable situation, as determined by the Planning Division and/or Department of Public Works, the responsible property owner(s) shall be provided with written notice that such shall be repaired within a time period agreed to by the governmental unit. Failure to repair shall subject all affected property owners to provisions of section 12. 7. All required paved driving surfaces shall be kept clear of all obstacles including, but not limited to dumpsters, utility poles, personal property and other such situations. G. Other easements. 1 . Should, through a plan for a planned unit development under Appendix B of the Code of Ordinances, or described under other plans, there be defined a trail system, paths, ponds, lakes, drainage easements or other such easement or open space not directly related to a physical utility, there shall be dedicated such on a final plat or separate instrument. 2. Should paving, sidewalk, grading, landscaping or other improvement be required with an easement or open space, such shall be installed at time of platting or the amount placed in escrow with the city to cover all costs according to provisions herein. 3. Responsibility for maintenance of the easement(s) or open space shall be the responsibility of the property owner unless otherwise accepted by the responsible governmental unit. H. Drainage easements. 1 . Drainage easements shall be provided where required by the Department of Public Works. 2. The width and location of such drainage easements shall be in accordance with the current city stormwater design criteria. 3. No structures shall be placed in a drainage easement. These include but are not limited to fences, portable buildings, permanent structures, etc. In addition no vegetation shall be installed in this easement other than what has been approved by the Department of Public Works. 4. Encroachments existing on April 1 , 2008, may be allowed to remain if the director of public works determines the encroachment will not constrict the flow of stormwater. 5. All stormwater detention facilities shall require the dedication of a drainage easement in accordance with chapter 106, article VIII, Stormwater Management of this Code. 6. Drainage easements shall be solely for the conveyance of stormwater and the placement of city owned utilities. Drainage easements shall not be combined with non- city utility easements and/or access easements without the approval of the Director of Public Works. 7. Drainage easements shall be a minimum width of 15 feet when on the common lot line between two properties to convey stormwater in a concrete flume or pipe up to 36 inches in diameter with 20 feet minimum width for a pipe greater than 36 inches. 8. The Director of Public Works shall have the discretion to determine the level of maintenance necessary for drainage easements and may elect to maintain any easements in their natural condition. 3.5 Water. A. All subdivisions shall be provided by the applicant with water supply and water distribution systems approved by the Department of Public Works and/or Health Department. B. Fire hydrants, in accordance with city standards, shall be installed as part of the water distribution system by the applicant so that every lot is within 500 feet of a fire hydrant or as required by the Texas Insurance Commission. C. Extension of water lines shall be in accordance with chapter 106, article VI, Extensions, of the Code of Ordinances. 3.6 Sewer. A. All subdivisions shall be provided by the applicant with an approved sewage disposal system. B. Connection with the sanitary sewer system shall be required except where the Department of Public Works determines that such connection will require unreasonable expenditure when compared with other methods of sewage disposal. Where on-site sewer systems are installed, the design for the system will be in accordance with requirements of the Texas Commission on Environmental Quality (TCEQ). If the applicant proposes to install a sanitary sewer disposal system, the plans for such a system must be approved in accordance with standards and requirements of the Health Department and TCEQ prior to approval of the final plat by the Commission. Unless otherwise advised, the City of Wichita Falls/Wichita County Health Department is the authorized TCEQ representative. C. Extension of sanitary sewer lines shall be in accordance with chapter 106, article VI, Extensions, of the Code of Ordinances. 3.7 Utility lines. A. All city owned sanitary sewer and water utilities shall be placed in the street right-of- way. For any previously approved applicant master plan, when economically feasible, provisions shall be made to transition from the rear of lots to the street right of way for future extensions. Utility transition routing shall be coordinated with Public Works. B. All utility lines that pass under a street or alley shall be installed before the street or alley is paved. When it is necessary that utility lines pass under pavement, they shall be installed to a point at least three feet beyond the edge of the pavement. An exception to this requirement exists where underground construction technology (e.g., boring) is used at the utility company's or contractor's option. All necessary utilities shall be installed before building permits and/or certificates of occupancy are issued for work within the subdivision. C. All telephone, telecommunication, cable television and electrical utility lateral and service lines shall be placed underground throughout new subdivisions for which final plats are approved subsequent to the effective date of this subsection subject to the following conditions: 1 . All electrical transmission lines, meaning those electrical lines operated at nominal voltages of 60,000 volts or higher, may be placed overhead. 2. Any electrical feeder lines, meaning those electrical lines that emanate from substations to distribute power throughout an area, may be placed overhead. 3. Where electrical service is to be placed underground, electrical service for street or site lighting shall also be placed underground except for the lighting standards. 4. Temporary electrical service during construction may be provided by overhead utility lines and facilities prior to activation of the underground service. Following activation of the underground permanent service, the temporary overhead electrical service shall be removed as soon as possible. 5. The electrical utility company may plan and construct overhead lines on perimeters of subdivisions or property. Telephone and cable television lines may be constructed overhead where overhead electric utility lines are permitted. 6. Each of the utility companies shall be responsible for developing administrative policies and cost reimbursement procedures for the installation and extension of their underground utilities. Nothing herein shall prohibit or restrict any utility company from recovering the difference in cost of overhead facilities and underground utilities from the owner or developer in accordance with the provisions of such utility's approved tariff. No utility company shall be required to begin construction of underground facilities unless and until the owner or developer of the subdivision has made arrangements satisfactory to the specific utility company for the payment of such difference between the cost of overhead facilities and underground facilities. No plat shall be approved without a certification by all electric, telephone and cable television companies that such satisfactory arrangements have been made being affixed to the plat. The city shall not be responsible for any portion of such cost unless the city determines that the owner, developer or consumer should not pay such difference in cost and the city refuses to grant an exception allowing overhead construction. 7. All electrical, cable television, telecommunication, and telephone support equipment (transformers, amplifiers, switching devices, etc.) necessary for underground installation shall be pad mounted or placed underground and the difference in cost of such facilities shall be paid to the installing utility company in accordance with provisions established under paragraph 6 [of this section]. 8. Nothing herein shall be construed to require a utility to install underground facilities or any facilities other than standard overhead facilities, unless the increased cost associated with the underground or other non-standard facilities has been paid to the utility by the developer or the city prior to construction. 9. Nothing contained herein shall be construed to require any existing overhead facilities to be placed underground or to prohibit the upgrading, reconstruction, relocation, or reconductoring of any existing overhead facilities with overhead construction. 10. Nothing contained herein shall be construed to alter the intent of any utility Franchise Agreement Ordinance in effect on the effective date of this section. 3.8 Surveying standards. All surveys performed in connection with these regulations shall be performed by a registered professional surveyor in good standing licensed by the state. All surveys shall meet the minimum standards of professional practice promulgated by the state board of professional land surveying. 3.9 Drainage. A. Where a subdivision is traversed by a watercourse, drainage way, natural channel or stream, there shall be provided an easement or right-of-way conforming substantially to the limit of such watercourse, plus additional width to accommodate future needs as determined by the Department of Public Works. B. Drainage facilities shall be provided and constructed by the applicant in accordance with chapter 106, article VIII, Stormwater Management, of the Code of Ordinances, and as required by the Department of Public Works and any other ordinance adopted by City Council. 3.10 Lots and setbacks. A. All lots shall have access to, and front on a public street unless otherwise approved as required herein. Lots designated for stormwater detention shall not be required to front on a public street, but shall be accessed by approved easements. Once so shown and described on a final plat, such lot shall not thereafter be used for other than as intended unless approved by the Planning Division and Department of Public Works. Lots separated from a street right-of-way by strip of land owned by: 1 . A utility, used for the sole purpose of providing utilities; 2. A pipeline company, used for the sole purpose of transporting liquids; or 3. A railroad company, used for the sole purpose of transport; shall not be required to front on a public street, provided that a permanent easement is obtained from the aforesaid utility company, pipeline company or railroad company, providing for vehicular access between the lots and the public street. B. Unless otherwise required herein, or allowed under Appendix B of the Code of Ordinances, minimum width at the building limit line of 50 feet as measured along the building limit line or within 25 feet of the right-of-way line, whichever is closer. C. The area of a lot for the purposes of compliance with this regulation shall be the net horizontal area within the lot boundary lines and shall exclude any street or alley rights-of- way, but shall include easements. D. If a portion of a legally existing lot is acquired for public use in any manner including dedication, condemnation, or purchase, the remainder of such lot shall be considered as complying with the requirements of these regulations. E. Lot width shall be measured between the side lot lines along the minimum required front setback line, or the front lot line if no front setback is required. F. Setbacks shown herein shall apply within the city's extraterritorial jurisdiction in the absence of county requirements. Setbacks within the city limits shall be governed by Appendix B, Zoning, of the Code of Ordinances. G. Setbacks within level one: Front setback: 25-foot minimum. Interior side setback: Five-foot minimum. Exterior side setback: 15 feet for single-family or duplex residential use. 25 feet for uses other than single-family or duplex use. Rear setback: 1 . For single-family or duplex dwellings, five-foot minimum from common lot line or one-foot minimum from alley. 2. For all other uses, five-foot minimum. In no case shall the roof overhang extend over the property line. 3. If a lot has double frontage, 25 feet. H. Setbacks within level two: Front setback: 100-foot minimum from a U.S.-designated roadway or interstate highway. 50-foot minimum from a state road. 40-foot minimum from other road. Interior side setback: Five-foot minimum. Exterior side setback: 15 feet for single-family or duplex residential use. 25 feet for uses other than single-family or duplex use. Rear setback: 1 . For single-family or duplex dwellings, five-foot minimum from common lot line or one foot minimum from alley. 2. For all other uses, five-foot minimum. However, in no case shall the roof overhang extend over the property line. 3. If a lot has double frontage, 25 feet. I. Should the project cross county lines or level of development, the most restrictive standards between the city and county shall apply to the entire development within the city's extraterritorial jurisdiction. J. All setbacks shall be measured from the edge of an existing right-of-way or following any required dedication. K. A required setback shall be measured parallel to and for the entire length of the lot line on the side of the lot for which the setback is being measured. No building or structure shall be located, erected, or altered so as to have a smaller setback than the minimum setback required herein. The area between the setback and the lot line on the side of the lot for which the setback is being measured, shall be known as the setback area. L. A required setback area shall be kept free of any building or structure higher than two feet. 3.11 Erosion control.Reserved. 3.12 Regulations related to airport proximity.All development and improvements within the city limits and within levels one and two, and those areas located outside of level two where such regulation is required in the interest of public health, safety and general welfare of north central Texas, shall be subject to standards and regulations contained under Chapter 6400, Airport Zoning Regulations, of Appendix B, Zoning Ordinance of the Code of Ordinances and as authorized under the Airport Zoning Act, Texas Local Government Code ch. 241 . 3.13 Request for easement, license, or abandonment of city property interest. A. An owner of property underlying an easement held by the city may request that the city abandon all or a portion of said easement. B. An owner of property abutting city property or right-of-way may request that the city license the use of city property or right-of-way or execute an easement for an encroachment on city property or right-of-way. C. A request for such abandonment, license, or easement will be filed in writing with the property management division of the city's Department of Development Services and be accompanied by a fee the greater of [a fee established by separate ordinance] or the value of the requested property interest, with said property interest value to be determined by the city's property administrator. The city's property administrator may waive the aforementioned fee upon a determination that: (1) The requested right or abandonment is of de minimis value and requires minimal staff time to research and define; or (2) The requested right or abandonment is in exchange for a property interest of similar or greater value. D. If the city's property administrator determines that a survey or appraisal is necessary to determine the size or nature of the property or its value, the requesting owner shall pay for the cost of said survey or appraisal or provide same. E. If the city manager determines that the city's interests are sufficiently protected by the proposed abandonment, license, or easement and that the execution of said document is in the interest of the city, then the city manager may execute all documents necessary to allow the underlying or abutting property owner to utilize the requested interest in the property. F. This section authorizes actions that are within the discretion of city staff with respect to property interests owned by the city. This section does not reduce the right of the city council to authorize or abandon a city interest in property. This section is not adopted pursuant to Chapter 211 of the Texas Local Government Code. A decision of an official pursuant to this section is not appealable pursuant to sections 8 or 9 of this appendix to the board of adjustment. § 8 through § 10.10. [Rcscrvcd.] 3.1 4..5 11 Parks. A. All applicants shall be required to set aside land for park purposes under conditions set out in subsection B of this section when the master park plan of the city shows a park is required in the area to be subdivided and the applicant shall show such land set aside in compliance with this section on the master plat or preliminary plat. All areas set aside for park purposes shall conform to the master park plan as to general location, area and type of development. The parks and recreation department should be consulted when developing the master plat so that few revisions will be necessary later. B. The city shall be granted an option to purchase the land so set aside for park purposes upon the following terms. If at the end of one year from the date of approval by the Commission of the master plat or preliminary plat if there is no master plat, the total area covered by said plat has been at least 50 percent developed, then and in that event the city shall be required to exercise its option within 30 days thereafter or release the same to the applicant with the purchase price to be computed as set out in subsection C of this section. If at the end of one year there has not been a 50 percent development, then and in that event the option shall continue in full force and effect until said total area has been at least 50 percent developed with the city then required to exercise or release its option as set out above. C. The price to be paid by the city for the land set aside for park purposes shall be based on the fair market value of the raw land as of the date the master or preliminary plat is first filed with the board, plus the pro rata part of all development cost attributable to the park land so purchased, including abutting streets and utilities necessary to serve the park land. D. All applicants shall also submit on the master plat an indication showing how the park area is to be developed in the event the city is unable to purchase the property or rejects it because of other reasons. E. All areas reserved for park land shall conform to the city master park plan as to general location, area and type of development. The city shall have the right to accept or reject park land proposals as shown on the developer's master plat, at such time as the master plat is brought before the Commission for approval. The one year option period, which the city has to buy the land, shall begin with the Commission's approval of the developer's master plat. (Ordinance 20 2018 adopted 5/1/18)§ 4 Platting process and conditions. 43.1 General. A. Whenever an applicant desires to create a subdivision within the city or its extraterritorial jurisdiction, he shall plat the property, construct the required site improvements, and meet all of the other requirements of this ordinance at the applicant's expense. B. No subdivision of land shall occur as to make or create a situation as to make any part of the resulting tract, parcel or lot nonconforming or without access. C. No preliminary plat shall be submitted concurrently with a final plat. This may be waived on agreement by the Director of Community DcvclopmcntDevelopment Services and the Director of Public Works. D. A presubmittal meeting with city staff shall be required when a proposed subdivision is more than five lots. 44.2PIat required. A. Whenever the owner(s) of platted lot(s) within the city or its extraterritorial jurisdiction proposes to construct or has constructed a structure that crosses a lot line or has violated setback requirements, such owner shall replat the lots in accordance with this ordinance. B. Whenever the owner of a tract of land, within the city or its extraterritorial jurisdiction, which has not been platted proposes to sell such tract in part, to obtain a site plan for said tract pursuant to Appendix B of this Code, or to construct or expand any building or other structure thereon, or to connect said tract with any water or wastewater utility, he shall plat such tract in accordance with this ordinance. Even though he plats such tract in whole or in part as a single lot, he shall be required to dedicate the required boundary street right-of-way for the entire original tract as it exists prior to the plat, and comply with all other applicable requirements of this ordinance if shown on the thoroughfare plan, in the metropolitan transportation plan or as required by the county. Provided, however, the owner will not have to plat the tract if such tract was subdivided from a larger tract no later than December 31 , 1927. However, if the tract was subdivided from a larger tract on or after September 28,1964, the larger tract must be platted to show the smaller tract as a lot therein. Under the above condition, the dedication of right-of-way along a remaining unplatted tract or parcel, where the original parcel, tract or lot was unplatted, will not require the platting of the remainder of the tract or parcel if there is no provision of municipal or other services required for the remaining tract. 43.3Sequence of approval._Unless otherwise provided for by this ordinance, an application for plat approval shall not be considered filed until: A. Development plans are on file and approved by the Director of Public Works designee; and, B. A preliminary plat of such property has been approved or conditionally approved by the Commission and all conditions or preliminary plat approval have been satisfied and approved by the Planning Department or via submittal of a final plat; and, CB. All public improvements required pursuant to this section have been constructed by the applicant and approved by the city, or secured by the applicant through an approved financing mechanism (i.e. irrevocable letter of credit) in an amount approved by the Director of Public Works. If desired by the applicant, a final plat may constitute only that portion of the approved preliminary plat proposed to be recorded and developed, provided such portion conforms to all requirements of this section and that the phases of development are indicated. 43.4Platting assistance._Prior to the official submittal of a preliminary plat of more than five lots, the applicant shall meet, consult with and present a proposed plan of subdivision to the Planning Division and Public Works for comments and advice on the procedures, specifications and standards required by the city for the subdivision of land, and who may use the services of other city departments as required. 43.5Fees._At the time an applicant applies for approval of a preliminary plat or final plat or replat, he shall pay to the city, through the Planning Division, a fee to cover the costs of reviewing and processing the plat as provided below. The area for revised preliminary plats shall be determined by the area changed from the previous submission. This fee shall be in addition to other fees required by the city. Fees shall be established as provided in the development fee ordinance adopted by the city council, which may from time to time adjust and revise the fees established, without amending this section. 43.6Exceptions to platting or fees. A. The following types of plats are specifically exempt from the payment of fees: 1 . Plats submitted by the city or any of its departments. 2. Plats submitted by any governmental or educational agency. 3. Plats submitted to correct minor drafting errors in recorded plats. 4. Plats filed for the purpose of dedicating land to the city in which no other subdivision of land is shown. 5. Replats occasioned by governmental action. B. The following situations are exempt from platting requirements: 1 . Remodeling an existing structure without adding to the floor area. 2. Adding additional floor area or constructing accessory structures to an existing single- family or duplex residential use, when such addition or construction is less than 50 percent of the existing floor area and does not encroach over a utility line or easement and/or does not exceed a value equal to or greater than 50 percent of the tax appraised value of the improvement immediately prior [to] construction. 3. Divisions of land where all resulting tracts are (a) 5.00 acres or greater, and (b) each part has access, and (c) no public improvements, including water service, are required or being provided, and (d) no dedication of right-of-way. 43.7Submission requirements. A. The applicant or his engineer or surveyor shall submit to the Planning Division: 1 . A complete application; 2. Support documents including but not limited to separate instruments, deeds, easements, or other agreements; 3. Four black line copies of the plat; 4. A legible-after-reproduction 81/4-inch [by] 11-inch copy of the plat that includes all information contained on the full-size plat, with the exception of field notes, metes and bounds descriptions, and signature blocks; 5. A legible 81/4-inch by 11-inch or 11-inch by 17-inch electronic version of the plat including all information contained on the full-size plat in a format required by the Planning Division or Department of Public Works; and 6. A fee for reviewing and processing as prescribed by the department. B. Following approval of a final plat by the city, a digital copy of the plat in a format required by the Planning Division and/or Department of Public Works shall be submitted with all corrections as required. If streets are proposed to be constructed in lieu of an escrow, a copy of the plat prior to filing will be required showing angle, bearings, distances, etc. C. All plats must be received at least 28 days prior to the Commission meeting, or as determined by the posted schedule provided by the Planning Division at which they are to be considered for approval. D. The plat shall be drawn on sheets 22 [inches] by 34 inches with a minimum three- quarter-inch binding margin on the left side of the sheet and one-quarter-inch margins on the other three sides. An alternative size may be considered by the Planning Division and/or Department of Public Works if legible in all respects and is compatible with archival requirements of the city. E. The plat shall be drawn to a scale of 100 feet to one inch. Other scales may be considered by the Planning Division and/or Department of Public Works if legible in all respects and is compatible with archival requirements of the city. The Planning Division and/or Department of Public Works may require a reduced scale. When more than one sheet is necessary to accommodate the entire area, an index sheet showing the entire subdivision at an appropriate scale shall be attached to the plat. F. Plats shall be signed and sealed by a registered state of Texas land surveyor in accordance with Texas state law. 43.8PIat processing. A. A plat shall be considered "filed" if and when the application is certified complete by the Planning Department after having reviewed that all applications, fees, and documents have been submitted in accordance with this section, and such documents are sufficiently accurate and appropriate to the specific area proposed under the final plat application. B. The Planning Division, Department of Public Works, Department of Parks and Recreation, Health Department, Fire Department, Traffic Division and others whose purview is sought shall check the plat as to its conformity with any plans, standards, and specifications set forth herein or referred to herein. C. A copy of the plat shall be submitted by the Planning Division to various public, quasi- public or private entities that may have a real, tangible or service interest in the property, as approved by the city, to determine conformity with the standards and specifications for their interest. D. The various entities shall return comments to the Planning Division with their recommendations or requirements as to modifications, additions or alterations of such plat if any. E. The Planning Division shall provide the applicant written recommendations, requirements, requested modifications, additions, or alterations of such plat if any. The applicant shall revise the plat and return the plats to the Planning Division for final review and prior to the Commission meeting. F. All requirements and city recommendations will be presented to the Commission for their review and consideration at a scheduled meeting. These comments shall be considered part of the process required for approval unless the Commission acts to modify or remove such requirement unless prohibited from doing so. The Planning Division and/or Department of Public Works may authorize or require minor amendments to the plat to conform to the provisions of this section. G. The Commission shall determine whether the lands are suitable for platting. The services of any department of the city may be utilized to this end. Land subject to flood or deemed to be topographically unsuitable because of relief, drainage, soil character or other conditions shall not be platted for any use which may increase the danger to health, life or property or aggravate erosion or flood hazard. H. Within 30 days after the plat is formally filed, the Commission shall approve or disapprove such plat. (Ordinance 20-2018 adopted 5/1/18) § 54-Preliminary plat. 54.1 General._Whenever an applicant desires to make a subdivision he shall cause to be prepared a preliminary plat by a surveyor or engineer and, when required, site plans and declarations in accordance with this ordinance, and the Code of Ordinances as applicable. 54.2Changes to preliminary plats_.If, after approval of a preliminary plat, changes thereto are required or desired, a revised preliminary plat shall be submitted following the same procedures as required for the original preliminary plat. 54.3Documentation required. A. Completed preliminary plat application; B. Applicant master plans approved by the City Engineer, in writing, when the development is more than five lots, or as required; and, C. Any recorded separate instrument documents for any easements, agreements, right- of-way, or deed that traverses the property or as requested by the Property Management Division or Public Works Department. 54.4Plat content.The plat shall show the following: A. Names and addresses and phone numbers of record owner(s), engineers and surveyor. B. Proposed name of the subdivision that shall not have the same spelling as or be pronounced similar to the name of any other recorded subdivision located within the city or within its extraterritorial jurisdiction. The name shall appear at the top of the drawing and shall be the largest lettering on the plat. C. Names of adjacent subdivisions and the owners of adjoining parcels of unsubdivided land, and an indication of whether or not adjacent properties are platted. D. Legal description of the subdivision by metes and bounds. E. Primary control points or descriptions and ties to such control points to which all dimensions, angles, bearings, block numbers and similar data shall be referred. F. Subdivision boundary lines indicated by heavy lines and the computed acreage. G. Existing sites as follows: 1 . The location, name, description, and purpose of all existing or recorded streets, alleys, reservations, easements or other rights-of-way within the subdivision, intersecting or adjacent to its boundary or forming such boundary. Areas previously dedicated and shown on the plat shall be described by volume and page or document number if on file in official county records and have a statement shown in the affected area stating that it has been previously dedicated. 2. The location, dimensions, description, name, and purpose of all existing or recorded lots, easements and types, parks, public areas, permanent structures and other sites within or adjacent to the subdivision. 3. The location, sizes, dimensions, description and flow line of existing watercourses and drainage structures within the subdivision or adjoining tracts. In the event any portion of the subdivision lies within or abuts an officially designated floodplain and/or floodway, the delineation of such floodplain and/or floodway shall be clearly shown on all plats submitted for approval. 4. The location of existing structures if necessary to verify that a nonconforming situation has not been or will not be created. 5. All existing features, including, but not limited to, easements, transmission lines, etc., shall be shown by dashed lines. H. The location, dimensions and description of all proposed streets, alleys, drainage structures, parks, other public areas, reservations, easements or other rights-of-way, lots and other sites and all rights-of-way and other public areas dedicated shall state within that area that the property is "proposed to be dedicated." The described shall also be in accordance with the city's adopted Comprehensive Plan, master thoroughfare plan, master utility plans, parks and trails master plan, or their successor documents. I. Date of preparation, written and graphic scales of plat, and north arrow. J. Topographical information shall include contour lines on two vertical feet intervals. K. A number to identify each lot or site. Block numbers may be used. The Planning Division shall determine the applicability and the requirements for meeting this provision. L. Front building setback lines on all lots and sites and side yard building setback lines at street intersections. M. Location of city limits line and the outer border of the city's extraterritorial jurisdiction if they traverse the subdivision, form part of the boundary of the subdivision or are adjacent to such boundary. N. The location of any noise contour line, approach/departure clearance surface, inner or outer horizontal surface, conical or transitional surface or other such surfaces as required by the Planning Division and as applicable for Sheppard Air Force Base and/or Kickapoo Downtown Airport. O. A vicinity map that shows the location of the project that shall show arterials and/or highways in the vicinity for reference. 54.5Preliminary plat approval. A. Approval of a preliminary plat by the Commission shall be deemed an expression of approval of the layout submitted on the preliminary plat as a guide to the installation of streets, water, sewer and other required improvements and utilities and to the preparation of the final or record plat. Approval of a preliminary plat shall not constitute automatic approval of the final plat. The plat shall accurately locate all elements as required herein. The accuracy of such information shall be the responsibility of the property owner and/or his agent. B. Approval of a preliminary plat shall be effective for two years. C. If no development has occurred which would affect the previously approved plat, prior to the end of the two years of effective approval, the Commission may, upon application of the, applicant extend the approval another two-year period without the submission of a new preliminary plat by voting an approval of the original preliminary plat. D. A preliminary plat shall be revised if there are discovered to be constraints to the development as proposed on the preliminary plat. Should such constraints or obstacles be found, the Planning Division and/or Department of Public Works shall require the submission of an amended preliminary plat that recognizes, mitigates or otherwise allows for the effects of the constraint or obstacle as approved by the Planning Division and/or Department of Public Works. (Ordinance 2 -2n1 S2 adopter! 5/1/18) § 65 Final plat. 64.1 General.Whenever an applicant desires to make a subdivision he shall cause to be prepared a final plat by a surveyor or engineer, appropriate site improvement plans, and complete the certificates prescribed in this section. If desired by the applicant, and following approval by the Planning Division and Department of Public Works, the final plat may consist of only that portion of the approved preliminary plat that he proposes to record at that time. However, such portion shall conform to all of the requirements of this section. A plat shall not be considered approved by the Commission unless it complies with all requirements herein. 65..2Documentation required. A. Completed final plat application; B. Any recorded separate instrument documents for any easements, agreements, right- of-way, or deed that traverses the property or as requested by the Property Management Division or Public Works Department. 6 .3Plat requirements. A. The final plat shall contain all of thc fctures rcquircd for prcliminary plats or as rcquircd by thc Planning Division and/or Dcpartmcnt of Public Works and it shall be. accompanicd by thc following sitc improvcmcnt plans bcaring thc seal of an cnginccr: 1 . Sanitary scwcrs.Dctailcd cnginccring plans of thc proposcd scwcr facilitics as rcquircd by thc standard spccifications. 2. Watcr.Dctailcd cnginccring plans of thc proposcd watcr facilitics as rcquircd by thc Dcpartmcnt of Public Works. . drainagc facilitics as rcquircd by thc Dcpartmcnt of Public Works. 4. Strccts, curbs and guttcrs.lf within Icvcl onc, dctailcd cnginccring plans of thc proposcd strccts, curbs and guttcrs as rcquircd by thc Dcpartmcnt of Public Works. thc Dcpartmcnt of Public Works. Dctcrmination of thc nccd for curb and guttcr within Icvcl two arcas shall considcr thc dcnsity of cxisting dcvclopmcnt, plans or prcliminary plats considcrcd or approvcd within thc last fivc ycars, and othcr such issucs. A plat that includcs both Icvcl one and Icvcl two arcas shall rcquirc thc submission of curb and guttcr rcquircmcnts for thc cntirc dcvclopmcnt, or as rcquircd hcrcin. B. The final plat and the accompanying site improvement data shall be approved by the Director of Public Works. C. Street dedications within level two, and those areas within level one shall be made to the county in which the street is proposed. The width of the required dedication shall be the greater width between the city and county requirements. D. All lots shall be served by water, sewer, and public streets unless otherwise approved by the Director of Public Works. E. Final plats that require a preliminary plat shall not be considered until there is an approved preliminary plat. 6 .4PIat content. A. In addition to the requirements for the preliminary plat, the final plat shall also include the following: 1 . The exact location, dimensions, name, description, and purpose of all existing or recorded streets, alleys, reservations, easements or other rights-of-way within the subdivision, intersecting or adjacent to its boundary or forming such boundary, with accurate dimensions, bearing or deflecting angles and radii, area, and central angle, degree of curvature, tangent distance and length of all curves where appropriate. Areas previously dedicated and shown on the plat shall be described by volume and page or document number if on file in official county records and have a statement shown in the affected area stating that it has been "previously dedicated." 2. The exact location, dimensions, description, name and purpose of all proposed streets, alleys, drainage structures, parks, other public areas, reservations, easements or other rights-of-way, residential lots, and other sites, with accurate dimensions, bearing or deflecting angles. These areas dedicated for public use shall state that they are "herein dedicated" within the area affected. B. The final plat shall also include the following: 1 . Owner's acknowledgment: "State of Texas County of The owner of land shown on this plat and whose name is subscribed hereto, and in person or through a duly authorized agent hereby dedicates to the use of the public forever all streets, alleys, parks, watercourses, drains, easements and public places thereon shown for the purpose and consideration therein expressed and further warrants that he has lawful authority to make such dedications. Owner State of Texas County of Before me,the undersigned authority, on this day personally appeared ,known to me to be the person whose name is subscribed to the foregoing instrument, and acknowledged to me that he executed the same for the purposes and considerations therein expressed and in the capacity therein stated. Given under my hand and seal of office this day of , 20 Notary Public, . County, Texas. 2. Certificate by director of public works: "The Director of Public Works of the City of Wichita Falls, Texas, hereby certifies that this subdivision plat conforms to all requirements of the subdivision regulations as to which his approval is required. Director of Public Works 3. Approval of the Commission of the city: "This plat has been submitted to and considered by the Planning and Zoning Commission of the City of Wichita Falls, Texas, and is hereby approved. Dated this day of , 20 By: Chairman By: Secretary OR In the case of a minor plat, approval by the dDirector of community dcvclopmcntDevelopment Services: "This plat has been submitted to and considered by the City of Wichita Falls, Texas, under the terms and conditions of a minor plat and is hereby approved. Dated this the day of , 20 Director of the Department of Community DevelopmentDevelopment Services 4. Surveyor's certification: "I hereby certify that this plat has been prepared from an actual and accurate field survey of the land under my personal supervision on (date); and that all information shown is true and correct; and that all monuments shown thereon were properly placed under my personal supervision, in accordance with the subdivision regulations of the City of Wichita Falls, Texas. Surveyor 5. A certificate from the city tax collector and from the proper official of all other taxing authorities within whose jurisdiction the proposed subdivision lies to the effect that all ad valorem taxes have been paid on the land included within the subdivision and that there are no recorded liens by any taxing authority. 6. Where any plat wholly or in part lies outside of the corporate limits of the city, and within the extraterritorial jurisdiction as defined by state law, a legible statement shall appear on the plat as follows: "The area indicated on this plat as outside of the City limits of Wichita Falls on the date of approval of this plat is within the extraterritorial jurisdiction of the City of Wichita Falls and subject to annexation." 65.5Processing of final plat. A. No final plat will be considered unless a preliminary plat has been approved by the Commission. If circumstances prevail in which a single unplatted parcel may be platted into lots in only one obvious manner, no preliminary plat will be necessary. The Planning Department shall determine the necessity of preliminary plats in such cases. The dDirector of community developmcntDevelopment Services may approve minor plats involving four or fewer lots fronting on an existing street and not requiring the creation of any new street or the extension of municipal facilities. The director of community developmentDevelopment Services shall not disapprove such plat but refer any plat that he refuses to approve to the Commission. B. A final plat of an approved preliminary plat or a portion thereof shall be submitted to the Commission within two years of the date of approval of preliminary plat, otherwise the approval of the Commission shall become null and void. C. With the exception of minor situations or drafting errors authorized by the joint approval by the Department of Community DcvclopmcntDevelopment Services and Department of Public Works, no changes, erasures, modifications or revisions shall be made in any final plat of a subdivision after approval has been given by the Commission and endorsed on the plat in writing, unless said change, revision or modification is first submitted to and approved by the Commission. Errors affecting existing ROW and easements shall be corrected and a new or revised plat shall be submitted to the Commission. D. The director of public works shall certify by his signature on the final plat that all improvements required under this section have been completed prior to submittal of the final plat, or that one of the following types of guarantees has been furnished. If such a guarantee is furnished, it shall provide that all improvements shall be completed within 12 months, unless an extension of time is granted in writing by the director of public works for good cause. Such guarantees are as follows: 1 . The applicant may furnish an approved surety, payable to the governmental unit authorized to accept surety, in an amount sufficient to cover the entire cost of such improvements as required herein, as estimated by the applicant and approved by a person authorized by the governmental unit. 2. The applicant may deposit cash, or other instrument readily convertible into cash at face value, either with the governmental unit, or in escrow with a bank. The use of any instrument other than cash, and, in the case of an escrow account, the bank with which the funds are to be deposited, shall be subject to the approval by the governmental unit. If an instrument readily convertible into cash is deposited with the governmental unit, it may be reduced to cash at the discretion of the governmental unit. The amount of the deposit shall be sufficient to cover the entire cost of the required improvements, as estimated by the applicant and approved by the governmental unit. In the case of an escrow account, the applicant shall file an agreement between himself and the bank guaranteeing that such funds shall be held in trust until released by the governmental unit, and may not be used nor pledged by the applicant as security in any other matter during that period; that in case of failure of the applicant to complete said improvements within the time specified, then the bank shall immediately make the funds in such account available to the governmental unit for use in the completion of such improvements. Provided, however, periodic payments may be made from the cash deposited with the governmental unit or from the escrow account for progressive payments of construction costs of the required improvements, which payments shall be based upon progress work estimates prepared by the applicant's engineer and approved by the governmental unit. 3. The applicant may provide, from a bank or other reputable financial institution approved by the governmental unit, a letter of credit, which is approved by the city attorney. Such letter of credit shall state that the creditor guarantees funds in an amount equal to the cost of constructing such improvements, as estimated by the applicant and approved by the governmental unit. In case of failure on the part of the applicant to complete such improvements within the specified time, the creditor shall pay to the governmental unit immediately, and without further action, such funds as are necessary to complete such improvements, such letter of credit may not be withdrawn, or reduced in amount, until released by the governmental unit. If one of such guarantees is furnished to the governmental unit by the applicant, it shall be filed with the governmental unit. 4. The applicant, at his option, may elect to, during the course of improvements, to deposit cash, or other instrument into cash at face value, either with the governmental unit or in escrow with a bank for the balance of improvements yet to be installed. The amount shall be sufficient to cover the cost of the remainder of the improvements. The estimate shall be provided by the applicant and approved by the governmental unit. E. A final plat shall become void if there are discovered to be constraints to the development as proposed on the plat. Should such constraints or obstacles be found, the Planning Division and/or Department of Public Works shall require the submission of an amended plat that recognizes, mitigates or otherwise allows for the effects of the constraint or obstacle as approved by the Planning Division and/or Department of Public Works. A nonconforming condition shall also be considered a constraint or obstacle. F. Once all conditions are provided and accepted by the Planning Division and Public Works the final plat shall be recorded with the county. A copy of the recorded plat shall be provided to the Planning Division. {Ordinance 20 2018 adopted 5/1/18) § 6 Standards, specifications and conditions. 6.1 General. A. Staking for the proposed street construction will be provided by a competent engineer in the employment of the applicant. B. Upon completion of a street, drainage, water and/or sewer improvement as may be required, the respective governmental unit will inspect the finished work and provide the developer with a letter of approval C. No preliminary or final plat shall be approved by the Commission and no completed site improvements shall be accepted by the respective governmental unit unless they conform to requirements herein. D. No final inspection shall be made or certificate of occupancy issued on a project defined by or under the requirements of the building permit and/or approved site development. The director of community development may require guarantees or commitments that development and/or improvements will occur within a specific time. C Conformity wit hte 's s er .The subdivision shall conform to the GiW-s impprehensi a placer, u t ster f roughfa a plan' and parks and trails master plans, or their successor documents and the standard specifications, as applicable. F. Provisions for future subdivisions.lf a tract is subdivided into parcels larger than ordinary building lots, such parcels shall be arranged to allow the opening of future streets and logical future subdivisions. G. Reserve strips prohibited.There shall be no reserve strips controlling access to land dedicated or intended to be dedicated to public use. H. Suitable building sites.Every lot must contain a suitable building site unle c otherwise required by the city that a lot be identified for reference and legal description where such is open space, easement, or other such situates;--as required by the Planning Division, Department of Public Works, Department of Parks and Recreation or other administrative department of the city as I. Suitability of land use.Land shall be suited to the purpose for which it is to be used. J. Level of development requirements.Should a development be within two development levels, the most-restrictive standards shall apply. 6.2 Streets. A. General requirements for streets. 1. Street layout.Adequate streets shall be provided by the applicant, the affangeffiefftrGharaGtecexteff to the most recent thoroughfare plan or as required herein and shall be considered in their relation to existing and planned streets, to topographical conditions, to safety and convenience, and their appropriate relation to the proposed uses of the land to be served by such streets. 2. Relation to adjoining street system.Where necessary to the neighborhood pattern, existing principal streets in adjoining areas shall be continued and shall be at least as wide as such existing streets and in alignment therewith. 3. Projection of streets.Where adjoining areas are not subdivided, the arrangement of streets in the s-ubdivision shall make provision for the proper projection of streets into such unsubdivided areas. Dead-end streets are prohibited. Streets projecting into unsubdivided areas shall be provided with a cul de sac in accordance with standards herein. The Department of Public Works may consider and authorize a temporary cul de sac. Such temporary cul de sac shall be constructed in accordance with city standards and shown on the preliminary and final plat or by separate instrument. The length of a temporary cul de sac shall be no requirement for a temporary cul-de-sac. 4. Street jogs.Street jogs, with centerline offsets of less than 125 feet shall not be d. 5. Half streets.No new half streets shall be constructed unless approved by the director of public works. The director of public works may only approve the lane divided streets. Street intersections.Street intersections shall be as nearly at right angles as ac it le, gi iin T ivcgard tot min and granhyi 7. Cul de-sacs.Cul de sacs shall not exceed 600 feet in length in residential areas around right-of-way of not less than 100 feet in diameter in residential areas and not less than 200 feet in diameter in commercial and industrial areas unless otherwise allo pied herein The Planning Division, Department of Public Works and Fire Department shall evaluate the length and turn around for each cul de sac by considering emergency access, density of residential, intensity of commercial, topography, sight distance, alternative acces and other such issues. The above city departments shall have sole discretion to modify requirements herein in the interest of public health, safety 8. Access to arterial streets prohibited.Unless approved by the Directors of platted so that a residence fronts on or has direct access to an arterial street, highway, or highway frontage road. The directors may use the services of the metropolitan planning organization as necessary 9. Main driveway opening on street.Each residential lot shall have the main driveway to the garage, carport, or off-street parking area opening on a local residential or collector street, except where the subdivision is platted to allow main driveiay opening on the alley as provided herein , on the most recent thoroughfare plan, such street shall be platted in the location and of the right of way width indicated by the thoroughfare plan. Where a subdivision embraces an existing street or road not indicated on the thoroughfare plan, such street shall be platted in the right of way width indicated herein. 11. Local residential streets.Local residential streets shall be laid out as to discourage their use by through traffic where such traffic does not have its origin or destination within the residential area. This shall not include proposals or needs to connect adjoining residentiaLrubdivisions. 12. New adjacent arterial streets.The applicant shall dedicate right of way sufficient in width to meet the requirements of the thoroughfare plan or as required herein. 13. Adjacent existing streets or half streets.Where the proposed subdivision abuts upon an existing dedicated street or half street that does not conform to the thoroughfare plan or requirements herein, the applicant shall dedicate right of way sufficient to make the full right of way width conform to the requirements of the most recent thoroughfare plan or as required herein. 14. Single lot subdivision.All required right of way dedication shall—a4so apply to plats wherein a parcel is platted or replatted as a single lot and as required herein. 15. Street names.New streets shall be named in accordance with provisions of the Code of Ordinances and approved by the Planning Division B. Design standards for streets. 1. Curb and gutter in accordance with city standards shall be required on all streets within level one unless exempted under section 94-100 of this Code. The Department of Public Works shall evaluate and may amend the need for curbs roadway or other situations that may exist where the installation of curbs and gutters does not serve the public purpose. 2. Curb and gutter may not be required by the Department of Public Works within a level two area. The creation of a multiple-lot subdivision or the creation of a new street may require curbs and gutters. 3. Curbs and gutters shall be installed by the applicant on both sides of all interior streets and on the subdivision side of all streets forming part of the boundary of the subdivision. An exception to boundary street dedication and paving may exist where the other side of the street is developed and/or improved and shall consider alignments and other identifiable factors, under which case there may be required a dedication and paving on one or both sides of the street. Curbs and gutters shall be constructed to city specifications. All streets shall be paved by applicant to city specifications. 4. Curb cut and driveway widths shall be in accordance with Appendix B of the Code of Ordinances. Upon approval by an authorized official of the state state_rdesignated highways and frontage road a. Right of way and paving width shall be in accordance with the thoroughfare plAlarnh existin-g-er—Kepeced streets or roads within level one and level two areas not addressed in the thoroughfare plan or under other plans, shall be provided meeting city standards. If it is a state road or highway, the right of way and paving requirements shall be in accordance with state specifications, or where shall be the greater of 60 feet or as required by the county. Additional right of way and paving width may be required as determined by long range plans, other appropriate factors. c. The minimum right-of-way width and paving width, if the street is not indicated on the thoroughfare plan, shall be as required on the thoroughfare plan for the type and function of the street proposed unless additional width is required along state or county roads. d. The Planning Division and Department of Public Works shall be responsible for approving the street classification and/or type by considering the type, nature, density or intensity of proposed or future land uses related to or affecting the street. Local streets that serve, propose to serve, or may serve 150 or more dwellings shall be required to be upgraded to a minor collector under standards of the thoroughfare plan. Density calculations for local streets in adjacent or neighboring residentially zoned areas shall be based on 3.5 dwellings units per acre. In evaluating the street classification, consideration shall be given to other access. 6. Street Medians. 1. Definitions. a. Medians: a strip of land, whether raised or flush, between the lanes of opposing traffic on a divided street. 2. Generally. a. Raised medians shall not be allowed except when required by the thoroughfare plan or other government agency. b. Any required raised median shall be made of solid material that requires no routine maintenance nor designed to contain vegetation including, but not limited to grass, shrubs, or trees. c. Flush medians shall have the surrounding pavement structure extended across marking s d. Director of Public Works or designee may approve a variance to the items above where circumstances allow C. Access management. 1. Curb cuts on state-designated or state-controlled streets, roads or highways approval by the Planning Division and/or Department of Public Works will consider sight visibility in relation to the posted speed of the road, street or highway, topography, roadway design and distance between curb cuts in accordance with accepted standards. 2. The distance between curb cuts on arterial streets and state owned streets and roads shall be governed by the nature and type of land use, existing or potential signals, the ability for alternative access, the intended function of the roadway, and existing land uses. 3. As feasibly possible, marginal access streets or access easements shall be used for all commercial development to allow access to all properties-^;-ses without the need to access these individually from a public street. 4. The city, county and/or state may require the closing or partial closing of any curb cut or drive opening where such creates or has the potential to create a hazardous condition. Should the opening be closed, the property owner shall provide a curb and remove the drive approach. An alternative to the removal of a drive approach may be considered by the installation of an approved barricade, generally only where affected roads or streets carry 300 ADT or less. 5. Chapter 6200, exhibit B of Appendix B, Zoning Ordinance of the Code of Ordinances, shall be considered as a guideline used to calculate the distance requirements between curb cuts and intersections. The Planning Di„ision and Department of Public Works shall have final authority to modify conditions therein in the interest of public safety and as intended herein. 6. Section 102-40, visibility sight triangles, of the Code of Ordinances shall be considered a guide to sight visibility requirements. The Planning Di„ision and Department of Public Works may amend requirements therein in the interest of public safety, and in consideration with the above situations, and may require the installation of acceleration/deceleration lanes, modifications or installation of medians and turning bays, and other situations that will enhance public safety. D. Subdivision access. 1. All residential subdivisions shall have safe and reliable street access for daily use and emergency purposes. a. All preliminary plats showing 80 or more lots must be designed to show a minimum of two means of access to an existing collector or higher classification street as indicated on the Thoroughfare Plan. b. Upon final platting of 80 or more lots within a-p esed subdivision or section of a subdivision, a separate connection/access point providing secondary access to an existing collector or higher classification street must be dedicated, of the fire code and Section 6.2 of Appendix A Subdivision and development regulations.Oil and Gas Regulations 6.3 Eac A. A dcvcloper or property owncr may provide or be required to provide utility easements in accordancc with thc following requirements: thc Dcpartmcnt of Public Works or utility company. thc Dcpartmcnt of Public Works or utility company. Unless otherwise permittcd by thc Dircctor of Public Works, a dcvcloper or property owncr shall provide utility asemcnts in accordancc with thc following minimum width standards: • 10 feet when adjacent to a street right of way. 10 feet when occupied by a non city public utility and not containing or intending to contain city utilities. 15 feet when occupied by a city utility up to 12 inches in diameter, running between common lot lines with public right of way at end for access and not exceeding [two] lots in length. 20 feet when occupied by a city utility up to 36 inches in diameter. 30 feet when occupied by a city utility greater than 36 inches in diameter. 15 feet when occupied by a city utility when placed at the boundary of a development adjacent to unowned property. This requirement may be reduced to [ten] feet if the developer or property owner is able to secure [ten] feet of utility casement from the adjacent unowned property. Additionally, if the existing utility is constructed of any material other than PVC or a material approved by the Director of Public Works, the easement shall be an additional five feet wide when a line is buried more than seven feet in depth. The casement shall be an additional ten feet wide when a line is buried more than [12] feet in depth. The casement shall be an additional [15] feet wide when a line is buried more than [20] feet in depth. rcquircd by thc Department of Public Works or [thc] utility company. /1. No permanent or temporary cncroac"h;-cros s"al oc-ated thin a-ny eaceme;, Works. providcd from an adjacent strcct to grant dircct access to thc pumps. 6. Any pre existing cncroachmcnt that docs not have an cncroachmcnt agrccmcnt shall obtain agrccmcnt upon noticc by thc city or rcmovc said cncroachmcnt. B. Maintenance of cascmcnts shall be thc responsibility of thc owncr of the land upon which it is located. C. Normal curb and guttcr shall be rcquircd whcrc utility cascmcnts intersect streets. D. Whcrc utility cascmcnts arc not thcmsclvcs straight within each block, or if thc same an additional scmcnt shall bc providcd for thc placing of guy wires on lot division E. The property owner shall be required to identify buried, aerial or above ground as required by the governmental unit. F. Acccsc cascmcnts. Acccsc cascmcnts, whcrc allowed, shall be in accordance with the following: 1 . Residential: Acccsc cascmcnts, whcrc permitted, scrving singlc family or duplcx , and a minimum unobstructcd paving width of ninc fcct. 2. Commercial: Access easements, where permitted, shall have a minimum, unobstructcd pavcd width of 12 feet. Additional casement width may bc noccscary for utilitics, drainage, ctc. acccsc ascmcnt to providc primary acccsc. Thc minimum width shall bc 60 feet, measured from property linc(s) with a minimum unobstructcd paving width of 36 feet, or as provision based on thc type of dcvclopmcnt proposcd. 3. All access cascmcnts shall bc approvcd by thc Planning Division and/or Dcpartmcnt of Public Works. /1. All drive surfaces shall be hard surfaced with Hot Mix Asphaltic Concrete (HMAC) or concrctc suitable for continucd use by vchicics of the type intcndcd. Thc Dcpartmcnt Proposcd alternatives to address thc intent of this provision shall bc considered on a case by case basis. highway unlcsc approvcd by thc Planning Division and/or Dcpartmcnt of Public Work& multiple land uses. 6. Acccsc cascmcnts shall bc maintained by thc property owncr(s). Should thc acccsc owncr(s) shall bc provided with writtcn noticc that such shall bc repaired within a timc property owncrs to provisions of scction 12. 7. All rcquircd paved driving surfaces shall be kept clear of all obstacles including, but not limited to dumpsters, utility poles, personal property and other such situations. G. Othcr cascmcnts. , ponds, lakes, drainage easements or other such easement or open space not dircctly instrument. 2. Should paving, sidewalk, grading, landscaping or othcr improvement be rcquircd with an scmcnt or opcn spacc, such shall bc installed at timc of platting or thc amount 3. Responsibility for maintenance of thc cascmcnt(s) or opcn spacc shall bc thc governmental unit. H. Drainage cascmcnts. 1 . Drainagc cascmcnts shall bc providcd whcrc rcquircd by thc Dcpartmcnt of Public Works. currcnt city stormwatcr dcsign critcria. 3. No structures shall bc placcd in a drainagc cascmcnt. Thcsc includc but arc not limitcd bc installcd in this cascmcnt othcr than what has boon approvcd by thc Dcpartmcnt of Public Works. /l. Encroachments existing on April 1 , 2008, may be allowed to remain if the director of public works dctcrmincs the cncroachmcnt will not constrict the flow of stormwatcr. 5. All stormwatcr dctcntion facilitics shall rcquirc thc dcdication of a drainagc cascmcnt 6. Drainage casements shall be solely for the conveyance of stormwatcr and the Public Works. 7. Drainagc cascmcnts shall bc a minimum width of 15 foot whcn on thc common lot lino 8. The Dircctor of Public Works shall havc thc discrction to dctcrminc thc Icvcl of ascmcnts in thcir natural condition. 74.1 4Oil and gas wells. [(1)] For the purpose of this regulation, the term "plugged" shall refer to cementing a well to remove the well from production in accordance with standards of the Texas Railroad Commission. [(2)] It shall be unlawful for any person acting either for himself or acting as agent, employee, independent contractor, or servant for any person to drill any well, assist in any way in the site preparation, re-working, fracturing or operation of any such well or to conduct any activity related to the production of oil or gas without first obtaining a permit issued by the director of public works in accordance with this section. Such activities include, but are not limited to seismic exploration, site preparation, re- working, drilling, fracturing, operation, construction of rigs or tank batteries, fracturing and pressurizing of wells. A permit shall not be required for seismic exploration unless such survey activities will be conducted on city property or public utility easement. Explosives shall not be used within the city. [(3)]A permit shall authorize seismic exploration, site preparation, re-working, drilling, fracturing, operation, construction of rigs or tank batteries, and well pressurization for a period of one year after issuance. If a well is completed as a result of permitted drilling activity, the permit shall authorize continued operation of the well. A. Permit application and contents.The application for the permit, required by this [appendix], shall include the following information: 1 . A copy of the application to drill which has been filed with the state railroad Commission and copies addressing the requirements of the state railroad Commission for which is required to be met based on the application, together with bonding requirements, if required. 2. The name, address, and phone number of the operator of the lease and property owner, with the name of the contact person for the operator. 3. A description of the lease or the lands involved in the exploration, drilling or maintenance, and the length of time that surface operations are expected to occur. 4. A plat showing the location of the well, the ownership of the land, property lines, structures, and offset operators or landowners. 5. The name and address of the drilling contractor. 6. A site plan accurately depicting the proposed site and the location, distance to and nature of adjacent land uses. 7. A statement warning of possible hazardous formation conditions that may be encountered during or as a result of the proposed drilling or exploration operation or maintenance of an existing well site. 8. A copy of the operator's spill prevention plan. 9. The fee for a permit in the amount of $500.00 or as established in the fees chapter of this code. 10. A bond or letter of credit approved for form by the city attorney in the amount of $25,000.00 along with the permit application for the initial permit applied for by an operator. The bond shall be executed by the operator, as principal, and a corporate surety on the list of authorized insurance companies published by the State Board of Insurance of the State of Texas, as surety, in a form approved by the city attorney and with the bond in favor of the city conditioned that the operator will comply with all of the terms, conditions and requirements of this chapter and any permit issued pursuant hereto, and further conditioned that the operator will repair any damages to city roads, streets, highways, or other city property, as determined by the director of public works of the city, caused by the equipment and vehicles used by the permittee in going to and from the drill site with such repairs to be in compliance with specifications therefor prepared and provided to the operator by the director of public works. The security shall remain effective until the operations on the drill site are terminated. 11 . A certificate of insurance showing the insurance required in this section. B. Insurance.No well shall be drilled or any maintenance or exploration conducted unless the drilling firm, lease owner and/or contractor at all times carries minimum insurance coverage for bodily injury of $500,000.00 for each occurrence and $1 ,000,000.00 aggregate and for property damage of $500,000.00 for each occurrence and $1 ,000,000.00 aggregate, and for the cost of controlling a well that is out of control, re- drilling or restoration expenses, seepage and pollution damage as first party recovery for the operator and related expenses, including, but not limited to, evacuation of residents, in the amount of at least $5,000,000.00 per occurrence. The lease owner shall at all times carry this minimum limit of insurance until such time that the well is out of production and all appurtenances removed from the site. The insurance under all situations and at all times shall list the City of Wichita Falls as additionally named insured. C. Location, maintenance and fencing of tanks and tank batteries. 1 . The oil or fuel storage tank or tank battery shall be erected in conformance with the spill prevention control and countermeasure plan published by the U.S. Environmental Protection Agency. 2. The oil or fuel storage tank or tank battery shall be completely enclosed by: a. A minimum six-foot tall all metal chainlink fence with two-inch maximum mesh interwoven with opaque slats, topped by at least three strands of barbed wire; b. A solid minimum eight-foot tall masonry wall; or c. Other fencing material approved by the director of public works. 3. In no event shall a tank or tank battery be located nearer than 150 feet from any residence, or dwelling, unless the tank or tank battery existed prior to the residence or dwelling, or nearer than 30 feet from any combustible structure. 4. Oil and fuel storage tanks or tank batteries shall be kept well painted and in good repair. 5. If the well(s) associated with an oil storage tank or tank battery is/are plugged, or if the storage tank or tank battery is no longer in use, the storage tank or tank battery and associated pipelines shall be removed and the land restored. This provision may include all associated appurtenances with the wells and tank or tank batteries. This removal shall occur within six months unless documentation can be provided that the well and tank or tank battery will be used within the next two years. For the purpose of this provision, the term "no longer in use" shall mean that the tank or tank battery, while it or they may contain some residue or fuel, has not been pumped into or out of within the past six months. The director of public works may waive this requirement if the operator requests such waiver in writing, and the director determines that failure to pump is due to a reason other than the tank(s) no longer being in use. 6. Other oil or fuel storage tanks that receive products from transmission or distribution lines that are not pumped into or pumped out of for a period of six months shall be considered abandoned and/or unused. The leaseholder shall disassemble and completely remove such tanks from the site unless it is shown that there are plans to reuse the storage tanks within the next two years. 7. Within six months after removal of any oil storage tanks or tank batteries, the permittee shall restore the property to its original state insofar as possible, to include removal and/or restoration of any unremediated soil. D. Pumps to be electrically powered.No pumping unit used for the purpose of lifting oil shall be powered with any power other than electricity. If electrical power lines are proposed to be buried or are buried, a private easement shall be created and the Department of Public Works shall note the location of said easement and/or its encroachment into or within a public easement. Such easement shall be made a matter of public record by the filing of a plat or separate instrument. E. Pumping units. 1 . All surface equipment shall be kept clean, painted, in good repair, and properly lubricated in order that they will operate quietly. The noise produced by wells, jacks or units on a producing well shall not exceed 50 decibels at any boundary of the parcel on which the well is located. 2. All pumping units, compressors, and other powered equipment shall be completely enclosed by: a. A minimum six-foot tall all metal chainlink fence with two-inch maximum mesh interwoven with opaque slats, topped by at least three strands of barbed wire; b. A solid minimum eight-foot tall masonry wall; or c. Other fencing material approved by the director of public works. F. Flow lines. 1 . All flow lines and/or water and/or oil or gas lines shall be buried at least one foot under the ground unless permission is obtained from the surface owner. The Planning Division and/or Department of Public Works may require that flow lines and transmission lines be buried at a greater depth depending upon adjacent land uses and proposed streets, roads and highways. 2. All flow lines shall be shown on a plat or separate instrument and filed for public record. Upon the removal of the associated tank batteries and/or the plugging of wells associated with such pipelines, the pipelines shall be removed. The Department of Public Works may consider an alternative to the removal of the pipelines if the lines are flushed to remove any potential contaminates. Such exception shall apply to only those situations where removal is not technically feasible. 3. The Department of Public Works shall have sole authority to regulate the location and installation of such lines, which will also incorporate standards by the appropriate government agency. G. Waste oil or water to be cleaned up.Any waste oil or water in, on, or around any premises within the city or the extraterritorial jurisdiction shall be immediately cleaned up and the ground shall be cleaned of any oil-bearing dirt. H. Drilling operations generally.The owner, leaseholder, property owner or other who is responsible for drilling of a well or well site shall proceed with the drilling operations with the highest degree of care so as not to injure adjoining property or persons in any manner by: 1 . Keeping the premises suitably fenced or guarded 24 hours a day in such manner as to avoid trespassing during the drilling and exploratory operations; 2. Removing all drilling mud upon the completion of such drilling operations; 3. Immediately clearing the grounds around the well of all drilling mud and/or all oil, salt water or water. The area shall be made to conform in appearance to the lands in the neighborhood wherein such drilling, exploration or maintenance operations are so conducted. All pits must be steel or lined with a minimum six-mil impermeable liner. All pits and contents shall be removed from the premises and drill site within 30 days after completion of the well; 4. Prior to the commencement of any drilling operations, installing private roads used for access to the drill site and the operation site which are at least ten-feet wide, have an overhead clearance of at least 14 feet and are surfaced with asphalt, crushed rock, or gravel, and maintained to prevent dust and mud in accordance with the requirements of the director of public works. The requirements governing surfacing of private roads may be altered at the discretion of the director of public works after consideration of all circumstances, including, but not limited to, the following: [(i)] Distances from public streets and highways; [(ii)] Distances from adjoining and nearby property owners; [(iii)]The purpose for which the property of such owners is or may be used; [(iv)]Topographical features; [(v)] Nature of the soil; [(vi)]Exposure to wind; and [(vii)] Preference of the surface owner. 5. It shall be unlawful to create sound during drilling operations that exceeds: [(i)] 60 decibels during daytime hours between 7:00 a.m. and 7:00 p.m., measured at any occupied structure on a parcel other than the parcel on which the oil well is located. [(ii)] 50 decibels during nighttime hours between 7:00 p.m. and 7:00 a.m., measured at any occupied structure on a parcel other than the parcel on which the oil well is located. I. Spacing. 1 . It shall be unlawful to drill any well, the center of which, at the surface of the ground, is located: a. Within 25 feet of any storage tank or source of ignition; b. Within 100 feet of any building accessory to the well, public street, road, highway, right- of-way or property line; c. Within 300 feet of any water well used as a potential source of drinking water; d. Within 400 feet of any commercial or industrial building; or e. Within 600 feet of any residence. 2. The minimum distances described in subsection 1 .d and 1 .e may be reduced by: a. A waiver granted by the city council; or b. Written notarized waivers granted by all owners of all buildings within the radius being protected from drilling. All waivers must identify the property address, block and lot number, subdivision name (if applicable), and plat volume and page or document number if on file in official county records. Such waivers must be filed, at the expense of the operator, in the Wichita County records prior to the issuance of the permit. J. Fracturing operations.lt shall be unlawful for any person to conduct fracturing operations on a well during the nighttime hours between 7:00 p.m. and 7:00 a.m. It shall further be unlawful for any person to create sound during such fracturing operations that is greater than 60 decibels, measured at any occupied off-site structure, unless a higher maximum decibel level has been provided by the director of public works. If a higher decibel level has been provided by the director of public works, it shall be unlawful for any person to: 1 . Create sound during fracturing operations that exceeds the decibel level provided by the director of public works; or 2. Conduct fracturing operations in a manner that fails to comply with the special conditions established by the director of public works. K. Easements.Wells shall be serviced from an existing public street or a dedicated access easement. 1 . A 25-foot access easement allowing entry of city personnel and other public safety personnel shall be provided from a street to the wellhead, tank, tank battery, flare and mud pits or any other areas where machinery is located. 2. The operator shall pay the city for any damage it causes to city property within 30 days after notification of such damage by the director of public works. 3. Once a well is plugged to remove from production and the site is restored as required herein, the easement may be removed. L. Floodplains.The floor of any drilling rig and the top of any well head shall be placed at least one foot above the base flood elevation in the area of any special flood hazard as such terms are defined in section 54-26. The base of any pumping units and oil storage tanks must be placed above the base flood elevation. M. Enforcement.Violation of the terms of this section shall be punishable by a fine of up to $2,000.00 per day, cancellation or suspension of the permit by the director of public works, or injunction. Prior to cancellation or suspension of a permit, the director of public works shall give the permit holder at least ten days' written notice, posted on the drill site, an opportunity for hearing, and at least one opportunity to cure the failure of at least ten days following the hearing. 6.5 Watcr. distribution systcms approvcd by thc Dcpartmcnt of Public Works and/or Hcalth Department. B. Firc hydrants, in accordancc with city standards, shall bc installcd as part of thc watcr d+stribution systcm by thc applicant so that cvcry lot is within 500 fcct of a firc hydrant or as rcquircd-by t;-e-T—e, , of thc Codc of Ordinanccs. 6.6 Sewer. A. All subdivisions shall bc providcd by thc applicant with an approvcd scwagc disposal cytcm. B. Conncction with thc sanitary scwcr systcm shall bc rcquircd cxccpt whcrc thc Department of Public Works determines that such connection will require unrcasonablc cxpcnditurc whcn comparcd with othcr mcthods of scwagc disposal. Whcrc on sitc scwcr systcms arc installcd, thc dcsign for thc systcm will bc in accordancc with requirements of thc Tcxas Commission on Environmcntal Quality (TCEQ). If thc applicant proposcs to install a sanitary scwcr disposal systcm, thc plans for such a systcm must bc approved in accordancc with standards and requirements of thc Hcalth Dcpartmcnt and TCEQ prior to approval of thc final plat by thc s Commission. U n l c Js—oth wise— vise-Glt--h-eZC�ity-of--WichiTta�GalRla�Wic�hit-a -Co- inty Hcalth Dcpartmcnt is thc authorized TCEQ representative. C. Extension of sanitary sewer linos shall be in accordance with chapter 106, article VI, Extcnsions, of thc Codc of Ordinanccs. 6.7 Utility lincs. , provisions shall bc made to transition from thc rear of lots to thc strcct right of way for future extcnsions. Utility transition routing shall be coordinated with Public Works. alloy is paved. When it is necessary that utility lines pass under pavement, they shall he in I to a point at I s+ ee fee eyond ge of pa y�m m�rT�� T r-r�a c� c�rcc yr cf'IT exception to this rcquircmcnt cxists whcrc undcrground construction technology (c.g., boring) is i ised at the i itility company°s or contractor°s option / ll necessary i itilities Q�T�G7 for work within the subdivision. placed undcrgrou r-thr ut a s� +sio s hi.h final plats are approved subsequent to thc effective date of this subsection subject to the following conditions: 1 . All cicctrical transmission lincs, moaning thosc cicctrical linos operated at nominal voltages of 60,000 volts or higher, may be placed ovcrhcad. 2. Any cicctrical fccdcr lincs, moaning those cicctrical linos that emanate from substations to distributc powcr throughout an arca, may bc placed ovcrhcad. 3. Whcrc cicctrical scrvicc is to bc placed underground, cicctrical scrvicc for strcct or site lighting shall also be placed underground except for thc lighting standards. /1. Temporary cicctrical scrvicc during construction may be provided by ovcrhcad utility linos and facilities prior to activation of the underground scrvicc. Following activation of the underground permanent scrvicc, the temporary ovcrhcad cicctrical scrvicc shall be removed as soon as possible. 5. The cicctrical utility company may plan and construct ovcrhcad linos on perimeters of ovcrhcad whcrc ovcrhcad electric utility linos arc permitted. and cost rcimburscmcnt proccdurcs for thc installation and cxtcnsion of thcir underground utilities. Nothing herein shall prohibit or restrict any utility company from rccovcring thc diffcrcncc in cost of ovcrhcad facilitics and undcrground utilitics from tariff. No utility company shall bc rcquircd to bcgin construction of undcrground facilities unlcss and until the owner or developer of the subdivision has made arrangcmcnts satisfactory to thc spccific utility company for thc paymcnt of such companics that such satisfactory arrangcmcnts havc bccn madc bcing affixcd to thc plat. The city shall not bc responsible for any portion of such cost unlcsc thc city determines that the owner, developer or consumer should not pay such diffcrcncc in 7. All electrical, cable television and telephone support equipment (transformers, amplifiers, switching dcviccs, ctc.) ncccscary for undcrground installation shall bc pad mounted or placed underground and the difference in cost of such facilitics shall bc paragraph 6 [of this section]. 8. Nothing hcrcin shall bc construcd to rcquirc a utility to install undcrground facilitics or any faic othcr than standard ovcrhcad facilities, unless the increased cost associated with thc undcrground or othcr non standard facilitics has been paid to the utility by thc developer or thc city prior to construction. 9. Nothing containcd hcrcin shall be construcd to rcquirc any cxisting ovcrh ad facilitics to bc placed undcrground or to prohibit thc upgrading, rcconstruction, relocation, or rcconductoring of any cxisting ovcrhcad facilitics with ovcrhcad construction. 10. Nothing containcd hcrcin shall bc construcd to altcr thc intent of any utility Franchise Agreement Ordinance in effect on the effective date of this scction. 6.8 Surveying standards.All survcys performcd in conncction with these regulations shall state. All surveys shall meet the minimum standards of professional practice promulgated by thc state board of profcscional land survcying. 6.9 Drainage. ctr m, thcrc shall bc provided an scmcnt or right of way conforming substantially to thc limit of such watercourse, plus additional width to accommodate future needs as dctcrmincd by thc Dcpartmcnt of Public Works. , and as rcquircd by thc Dcpartmcnt of Public Works. 6.10Lots and setbacks. A. All lots shall have acccsc to, and front on a public strcct unlcsc otherwise approved as rcquircd hcrcin. Lots designated for stormwatcr dctcntion shall not bc rcquircd to front on a public strcct, but shall bc accessed by approvcd cascmcnts. Once so shown and dcscribcd on a final plat, such lot shall not thereafter bc uscd for othcr than as intcndcd unlc approvcd by thc Planning Division and Department of Public Works. Lots separated from a street right of way by strip of land owned by: 1 . A utility, used for thc sole purpose of providing utilitics; 2. A pipeline company, used for the sole purpose of transporting liquids; or 3. A railroad company, uscd for thc sole purpose of transport; shall not be required to front on a public street, provided that a permanent casement is obtained from the aforesaid utility company,pipeline company or railroad company, providing for vehicular access between the lots and the public street. B. Unlcss othcrwisc rcquircd hcrcin, or allowed undcr Appcndix B of thc Codc of Ordinarcc , minimum width at thc building limit linc of 50 fcct as measured along thc building limit linc or within 25 fcct of the right of way linc, whichcvcr is closcr. of-way, but shall includc cascmcnts. D. If a portion of a Icgally exictinag lot is acquire for public nner inclb ding dedication, condemnation, or purchase, the remainder of such lot shall bc considered as complying with thc requirements of these regulations. front setback linc, or the front lot line if no front setback is rcquircd. F. Setbacks shown herein shall appl„ within the city's extraterritorial n risdiction in the absence of county requirements. Setbacks within the city limits shall bc governed by Appcndix B, Zoning, of thc Codc of Ordinances. G. Setbacks within Icvcl onc: Front setback: 25 foot minimum. Interior side setback: Five foot minimum. Exterior side setback: 15 feet for single family or duplex residential use. 25 feet for uses other than single family or duplex use. Rear setback: For single family or duplex dwellings, five foot minimum from common lot line or one foot minimum from alley. the property line. If a lot has double frontage, 25 feet. H. Setbacks within level two: Front setback: 100 foot minimum from a U.S. designated roadway or interstate highway. 50 foot minimum from a state road. 10 foot minimum from other road. Interior side setback: Five foot minimum. Exterior side setback: 15 feet for single family or duplex residential use. 25 feet for uses other than single family or duplex use. Rear setback: For single family or duplex dwellings, five foot minimum from common lot line or one foot minimum from alley. For all other uses, five foot minimum. However, in no case shall the roof overhang extend over the property line. If a lot has double frontage, 25 feet. I. Should the project cross county lines or level of development, the most restrictive standards between the city and county shall apply to the entire development within the city's extraterritorial jurisdiction. J. All sctbacks shall bc mcasurcd from thc cdgc of an cxisting right of way or following any rcquircd dcdication. K. A rcquircd sctback shall bc mcasurcd parallcl to and for thc cntirc Icngth of thc lot linc on thc sidc of thc lot for which thc sctback is bcing mcasurcd. No building or structurc shall bc locatcd, crcctcd, or altcrcd so as to havc a smallcr sctback than thc minimum feet 6.11 Erosion control.Rcscrvcd. 6.12Regulations related to airport proximity.All development and improvements within the city limits and within Icvcls one and two and th„ce areac located „b tcide „f level two welfare of north central Texas, shall be subject to standards and regulations containcd undcr Chaptcr 6/100, Airport Zoning Rcgulations, of Appcndix B, Zoning Ordinancc of thc Codc of Ordinanccs and as authorizcd undcr thc Airport Zoning Act, Tcxas Local Government Code ch. 2/11 . c ceequec ease Tien , licence, or abandonment of c icy prop rc ty intcrea� city abandon .III or a portion of cai`-I eacement liccnsc thc use of city property or right of way or cxccutc an cascmcnt for an encroachment on city property or right_of_way C. A rcqucst for such abandonmcnt, liccnsc, or cascmcnt will bc filcd in writing with thc property managcmcnt division of thc city's Dcpartmcnt of Community Dcvclopmcnt and bc accompanicd by a fcc thc grcatcr of [a fcc cstablishcd by scparatc ordinancc] or the value of the requested property interest, with said property intcrcst valuc to bc dctcrmincd by the city's property administrator. The city's property administrator may waivc thc aforcmcntioncd fcc upon a dctcrmination that: timc to rcscarch and dcfinc; or or grcater value. to dctcrminc thc sizc or naturc of thc property or its valuc, thc rcqucsting owner shall pa -f r-t e coct of caid c I or provide came E. If thc city managcr determines that thc city's intcrcsts arc sufficiently protected by the proposed abandonment, license, or casement and that thc execution of said documcnt is in the interest of the city, then the cit e r- ma„ execute all documents intcrcst in thc property. to property intcrcsts owncd by thc city. This section docs not rcducc thc right of thc adoptcd pursuant to Chapter 211 of thc Texas Local Government Code. A decision of appendix to thc board of adj.stmcnt. {Ordinance 38 2003, sec. 1, adopted 4/15/03; Ordinance 88 2005, sec. 2, adopted 11/1/05; Ordinance 56-2006, sec. 2, adopted 7/18/06; Ordinance 103-2007, sec. 1, adopted 12/18/07; Ordinance 21 2008, sec. 1, adopted 1/1/08; Ordinance 29 2009, sec. 2, adopted 5/5/09; Ordinance 45-2009, sec. 1, adopted 7/21/09; Ordinance 63-2010, adopted 11/16/10; Ordinance 10 2011, sec. 1, adopted 2/15/11; Ordinance 20 2018 adopted 5/1/18) § 8-7 Responsibility for payment of installation cost. A. The applicant shall pay all design, engineering, material, construction and installation costs of all improvements required by this section unless otherwise provided in this section. B. In the event [an] applicant desires the extension of water or sewer lines to serve his subdivision, he shall bear the entire design, engineering, material, construction and installation cost of all border, off-site and on-site lines. The Department of Public Works shall specify the size of all such lines, taking into consideration the city's master plans, standard specifications, and anticipated requirements of adjacent areas of future growth which must be served by such lines. The decision of the Department of Public Works concerning the size of the required lines shall be final. C. The construction of water and sewer lines in accordance with city plans and specifications will be done by a contractor of the applicant or property owner's choice; provided however, that such contractor shall furnish a performance bond and warranty bond, executed by a corporate surety authorized to do business in the state acceptable to the city and maintaining in the county an agent upon whom service of citation may be had, in an amount equal to the total construction cost. Said bond shall be conditioned upon: 1 . Completion of the entire construction in full conformity with the plans and specifications promulgated or approved by the Department of Public Works; and 2. Payment in full by the contractor of all claims for labor performed or materials furnished, in connection with such construction. All such construction work shall be subject to inspection by the Department of Public Works and/or the respective governmental unit as required, and no portion of any line installed in any excavation shall be covered unless and until the construction of such portion shall have been inspected and approved by the Department of Public Works and/or the respective governmental unit as required. D. Should the Department of Public Works require the installation of water and sewer facilities of a larger capacity than necessary to provide adequate water or sewer service to the applicant's property, the difference between the cost of such larger facilities and the size facility required to serve the subdivision will be paid for by the city. Such facilities may be constructed under contract awarded by the city, with a predetermined rate for the developer's share to be deposited with the city prior to the award of the contract. At the option of the city, such facilities may be constructed under a contract awarded by the developer, provided city and state requirements are met. Under either system, the pro rata share of the cost to be borne by the developer shall include all material, construction, and installation cost for the size facility adequate to serve the developer's property. For the purposes of this article, the minimum size line required to serve a subdivision shall not be less than eight-inch water and/or sewer. E. All sewer and water lines constructed or installed pursuant to the provisions of this section shall, when completed and accepted by the Department of Public Works, become the property of the city, free and clear of all encumbrances. The applicant shall provide a maintenance bond on the public improvements for a period of one year after the date on which the city accepts the property. Each and every contract entered into between [an] applicant and a contractor for the installation of sewer or water lines pursuant to the provisions of this section shall recite therein the provisions of this subsection. F. No sewer or water lines shall be installed or constructed except within a public street or alley, or within an easement granted to the city by appropriate written instrument filed for record with the county clerk of [the] county at the expense of the person requesting the extension of existing lines. G. No lift station, sanitary sewer system, or force main shall be constructed as part of the sewer line extension unless the applicant agrees that he will, at his own expense, construct such elements in accordance with the design standards provided by the Department of Public Works or in the case of lift stations a design prepared by the applicant's engineer and approved by the Department of Public Works. H. If the Commission or plans adopted by the city council requires the installation of any street with pavement over 48 feet, the city shall award the contract for construction and the developer shall deposit his share of the cost of construction with the city prior to award of the contract. The developer's share of the cost will include curbs and gutters including median curbs as required, and pavement for a 48-foot street. I. In no event shall the city be obligated to proceed under the terms of this section if sufficient funds are not available. Nothing in this ordinance shall be construed as a surrender by the city of its control over the streets, alleys, public ways or public easements within the city. J. No person shall acquire any vested rights under the provisions of this section. K. Withholding improvements until plat approved. 1 . The city shall withhold all city improvements of whatsoever nature including the furnishing of sewage facilities and water service from all subdivisions, which have not been approved as provided by law and further, no permit shall be issued by the building official of the city on any piece of property other than an original or a resubdivided lot in a duly approved and recorded subdivision, except the building official may issue a temporary connection of utilities permit for construction purposes and only during the time of actual construction on unplatted tracts of land if the owner of such property will sign an agreement stating that he will forthwith start proceedings to have such property approved and platted in accordance with these regulations and further acknowledge his understanding that a certificate of occupancy and a permanent permit for connection of public utilities shall be withheld until the platting of such property has been so approved and recorded. The temporary permit shall automatically terminate within 100 days from its issuance date or upon completion of construction. The master plat must be approved and recorded within 100 days from the temporary building permit issuance date. The following is the procedure required for the owner of such property to follow before entering into a platting agreement: a. Cause an abstractor or lawyer's certificate of ownership to be prepared and furnished to the Planning Division. b. Cause a dedication instrument to be prepared covering the dedication of property for public use, as determined by existing ordinances of the city. All lien holders of record shall be required to subordinate their lien on the property dedicated for public use. These instruments shall be placed in the custody of the city and/or the respective governmental unit as required to be recorded by the city and/or the respective governmental unit as required in the county clerk's office of the county(ies) in which the project is located, in the event that the person executing a platting agreement fails to complete the platting process forthwith as agreed. 2. The building official shall not issue a building permit until he has received approval from departments having purview over the plat requirements. L. The developer or contractor shall furnish to the city and/or the respective governmental unit as required a maintenance bond, or an approved surety, for the percentage amount show below in section M based upon the total cost of improvements constructed or installed pursuant to the provisions of this section, conditioned that the applicant shall pay all costs of maintaining, repairing, and replacing any defective parts, workmanship, or equipment for a period of one year after the improvement is accepted by the Department of Public Works and/or the respective governmental unit as required. The said maintenance bond shall be provided before the city engineer and/or the respective governmental unit as required issues a letter of acceptance or approval for the said improvements. M. Required Bond Amount Shall Cost ofbe % of Cost of Improvements Improvements $0—$100,000 100% $100,001— 75% $249,999 $250,000— 50% $499,999 Over $500,000 25% (Ordinance 20 2018 adopted 5/1/18) § 8 through § 10.10. [Reserved.] § 11 Parks. A. All applicant shall bc rcquircd to sct asidc land for park purposcs undcr conditions sct out in subscction B of this scction whcn thc mastcr park plan of thc city shows a park is rcquircd in thc arca to bc subdivided and thc applicant shall show such land sct Get asidc for park purposes shall conform to the mastcr park plan as to general location, arca and typc of dcvclopmcnt. Thc parks and rccrcation dcpartmcnt should bc consulted whcn dcvcloping thc mastcr plat so that fcw revisions will bc ncccssary latcr. B. Thc city shall bc granted an option to purchase thc land so sct asidc for park purposcs Commission of thc mastcr plat or preliminary plat if thcrc is no mastcr plat, the total arca covcrcd by said plat has bccn at (cast 50 perccnt dcvclopcd, thcn and in that event thc city shall bc rcquircd to cxcrcisc its option within 30 days thereafter or in subsection C of this section. If at the end of one year there has not bccn a 50 perccnt until said total arca has bccn at lcast 50 perccnt developed with the city then rcquircd to exercise or release its option as sct out above. C. Thc pricc to bc paid by thc city for thc land sct asidc for park purposcs shall bc based first filed with thc board, plus the pro rata part of all dcvclopmcnt cost attributablc to thc park land so purchascd, including abutting strccts and utilitics ncccssary to scrvc thc park land. D. All applicants shall also submit on thc mastcr plat an indication showing how thc park rcjccts it bccausc of othcr rcasons. E. All arcas rcscrvcd for park land shall conform to thc city mastcr park plan as to gcncral location, arca and typc of dcvclopmcnt. Thc city shall havc thc right to acccpt or rcjcct park land proposals as shown on thc dcvcloper's mastcr plat, at such timc as thc mastcr plat is brought bcforc thc Commission for approval. Thc one ycar option period, dcvcloper's mastcr plat. § 9 Penal provisions. If any individual (including any officer, agent or employee acting in behalf of any individual, firm, association or corporation) violates any provision of this ordinance, he shall be guilty of a misdemeanor, and, upon conviction of such violation he shall be fined an amount as provided by section 1-14 of the Code of Ordinances. Each day that such violation continues shall be a separate offense. Prosecution or conviction under this provision shall never be a bar to any other remedy or relief for violations of this ordinance. § 104 Enforcement other than penal. A. No permit shall be issued by the Health Department and/or Department of Public Works for the installation of an on-site sewerage system upon any lot in a subdivision for which a final plat has not been approved or on a lot in a subdivision in which the standards contained herein or referred to herein have not been complied with in full. B. No building, repair, plumbing or electrical permit shall be issued by the building official for any structure on a lot in a subdivision in which a final plat has not been approved or on a lot in a subdivision in which the standards contained herein or referred to herein have not been complied with in full, except in those situations described herein. C. The Department of Public Works and/or the respective governmental unit as required shall not repair, maintain, install or provide any streets or public utility services in any subdivision for which a final plat has not been approved or in which the standards contained herein or referred to herein have not been complied with in full. D. The city shall not sell, supply or allow to be sold or supplied any water, gas, electricity or sewerage service within a subdivision for which a final plat has not been approved or in which the standards contained herein or referred to herein have not been complied with in full. E. On behalf of the city and/or the respective governmental unit as required, the city attorney may institute appropriate action in the district court to enjoin any violation of this ordinance or the standards referred to herein which violation occurs within the city limits or within the extraterritorial jurisdiction of the city or as such jurisdiction is determined. F. If any subdivision exists for which a final plat has not been approved or in which the standards contained herein or referred to herein have not been complied with in full, the city attorney may, on behalf of the city and/or the respective governmental unit as required, cause an instrument to be filed in the deed records of the county or counties in which such subdivision or part thereof lies. The instrument may state the fact of such noncompliance or failure to secure final plat approval and the fact that the provisions of paragraphs A, B, C and D of this section will apply to the subdivision and the lots therein. If full compliance and final plat approval are secured after the filing of such instrument, the city attorney shall forthwith file an instrument in the deed records of each such county stating that paragraphs A, B, C and D no longer apply. § 114 Modification of subdivision regulations. A. Where existing conditions require a modification from the standards and regulations herein contained because of a distinct and unusual condition that does not prevail on other undeveloped land generally in the city, the Commission may approve a modification from specific standards to permit the equitable treatment of the land or tract in light of the unusual condition. B. The Commission may authorize a modification from these regulations when in its opinion deprivation of use of land will result from requiring strict compliance. The applicant shall have the responsibility of proving that the strict application of the subdivision ordinance creates a deprivation of use of land. The following conditions must be present for consideration: 1 . There are special circumstances or conditions affecting the land involved such that the strict application of the provisions of this chapter would deprive the applicant of the reasonable use of his land; and, 2. The granting of the modification will not be detrimental to the public health, safety or welfare, or injurious to other property in the area; and, 3. The granting of the modification will not have the effect of preventing the orderly subdivision of other lands in the area in accordance with the provisions of this chapter; and, 4. A more appropriate design solution exists which is not currently allowed in this chapter; and, 5. The granting of the modification is harmonious with the engineered design of the infrastructure of any neighboring subdivision. C. The modification may be granted only when in harmony with the general purpose and intent of this chapter so that the public health, safety, and welfare may be secured and substantial justice is done. Economic hardship to the applicant shall not be deemed to constitute a deprivation of use. The Commission may reach a conclusion that a deprivation exists if it finds that: 1 . If the applicant complies strictly with the provisions of this chapter, the applicant can make no reasonable use of the property; and 2. The deprivation of use relates to the applicant's land, rather than personal circumstances; and 3. The deprivation of use is unique to the property, rather than one shared by many surrounding properties; and 4. The deprivation of use is not the result of the applicant's own actions or actions of a previous owner or owner's agent. D. The request for modification shall be made in writing to the Planning Director and accompanied by a fee as set forth by separate ordinance. E. In cases where a modification was submitted in conjunction with a Final Plat, the plat is considered incomplete until the modification receives approval or denial by the Commission. Following the Commission determination on the modification, a complete Final Plat will be submitted to the Commission for approval or denial at the next available meeting. F. In granting a modification, the Commission may require such conditions as will, in its judgment, secure substantially the objectives of the standards or requirements so varied or modified and maintain the spirit and intent of the standards herein set forth. G. A determination by the Commission shall require an affirmative vote by six members to grant a modification. H. A determination may be appealed to city council by either the applicant or City Manager or his designee. Any appeal will be hear€d€ novo and shall require an affirmative vote by five members to affirm or overturn the decision of the Commission. {Ordinance 20 2018 adopted 5/1/18) Exhibit 2 rNpimr ‘"Pft i MC. 1 a a TEXAS W&eSkfef Clo/denOpportunities PAVEMENT DESIGN MANUAL CITY OF WICHITA FALLS, TEXAS PUBLIC WORKS DEPARTMENT 1300 SEVENTH STREET WICHITA FALLS, TEXAS 76301 Approved by: Russell Schreiber, P.E., Public Works Director Effective Date: TABLE OF CONTENTS 1.0 INTRODUCTION 1.1 Purpose and Scope 2.0 DESIGN CRITERIA 2000 PAVEMENT STANDARDS 2000 Concrete Pavement Section 2010 Asphalt Pavement Section 2040 Alley Pavement Section 2050 CONSTRUCTION JOINTS 2050 Construction Joint 2051 Expansion Joint 2052 Sawed Contraction Joint 2053 Existing Pavement-Tie-In Joint 2060 Spacing Diagram for Joints 2070 Terminal Anchor for Concrete Pavement 2071 Terminal Anchor with Expansion Joint for Concrete Pavement 2100 CURBS,GUTTERS,AND RAMPS 2120 6"Curb and Gutter 2120 Standard Sidewalk-Handicap Ramp-Type 1 2120 Standard Sidewalk-Handicap Ramp-Type 2 2121 Curb and Gutter—Mountable 2121 Perpendicular Curb Ramp-Type 1 and Type 2 2122 Perpendicular Curb Ramp-Type 3 and Type 4 2123 Directional Ramp with Radius-Type 5 2124 Standard Placement of Accessible Ramp-Type A 2124 Standard Profile of Accessible Ramp-Type A 2125 Standard Placement of Accessible Ramp-Type B 2125 Standard Profile of Accessible Ramp-Type B 2126 General Notes for Handicap Ramps 2130 Concrete Valley Gutter 2140 DRIVE APPROACHES 2140 Residential Drive Approach-Concrete Street 2145 Residential Drive Approach-Asphalt Street 2150 Commercial Drive Approach-Concrete Street 2155 Commercial Drive Approach-Asphalt Street 2160 Alley Approach 2165 Residential Drive Approach-With Mountable Curb 2170 Drive Approach-Rural Street 2180 Residential-Approach Locations 2180 Reinforced Concrete Retaining Wall-Integral with Sidewalk 2190 Dead End Street-Barricade Detail 2200 SIDEWALKS,TRAILS,AND CROSSWALKS 2200 Sidewalk 2210 Circle Trail Connection 2400 Crosswalk Striping Plan 1.0 INTRODUCTION: 1.1 Purpose and Scope The development of this design manual is authorized by the City of Wichita Falls' Subdivision and Development Regulations Ordinance to protect and provide for the safety and welfare of the general public and to ensure the proper development of public infrastructure within the City and its extraterritorial jurisdiction. This manual establishes standard design guidance for pavement development and construction processes within the jurisdiction of the City and is intended to encourage a greater uniformity in developing plans for the City's pavement facilities. The design standards described in the following pages are intended to serve as guidelines for the development of pavement structures for local government review and approval purposes;however,the responsibility for the adequacy and effectiveness of the actual design remains with the design engineer and sound engineering judgment must always be applied. Users of this manual should be knowledgeable and experienced in the theory and application of pavement engineering principles. Any deviation from the requirements of this manual must be approved by the Director of Public Works or designee. 2.0 DESIGN CRITERIA: C g F WU g RWW yF V - STREET WIDTH I FACE TO FACE S 0 N CONSTRUCTION JOINT OR SAWED LONGITUDINAL CONTRACTION JOINT. SEE APPLICABLE DETAILS. OPTIONAL MONOIJTHIC MOUNTABLE 12'(TYP BOTH SIDES.) CURB AND GUTTER.LOCAL RESIDENTIAL STREETS ONLY. SEE NIC 6'CURB&GUTTER.MONOUTHIC DETAIL SEE APPUCABLE DETAIL 1/4'/FT 1/4'/FT .,' .7.''''. •-•• • .". • j kr, UME STABILIZED SUBCRADE REINFORCED CONCRETE PAVEMENT. (ITEM 301.2)COMPACTED TO BARS PLACED AT 1 2 DEPTH. 95%ASTM D-698 / 2 GENERAL NOTES: Y2 I. CONSTRUCT EXPANSION AND CONTRACTION JOINTS AT INTERVALS SHOWN ON SPACING DIAGRAM FOR e gt JOINTS.SEE APPUCABLE DETAILS. a °`2 2. ALL CONCRETE MUST BE CLASS'C'(COMPRESSIVE STRENGTH OF 3600 PSI O 28 DAYS). c E 3. SEE PORTLAND CEMENT CONCRETE PAVEMENT.ITEM 303 OF THE STANDARD SPECIFICATIONS. t n,t °;EE o, 4. ALL EXPOSED CONCRETE SURFACES MUST BE CURED IN ACCORDANCE WITH ITEM 303.5.7 OF THE i Ry STANDARD SPECIFICATIONS. .8 0 le f£ 5. BACK FILL FROM BACK OF CURB TO RIGHT OF WAY UNE MUST BE COMPACTED TO 90%OF ASTM D-698. I c 1. 6. SUB GRADE PREPARATION MUST CONSIST OF LIME STABILIZATION IN ACCORDANCE INN ITEM 301.2 OF o-0 NE STANDARD SPECIFICATIONS.APPLIED AT A RATE OF 30 LBS./SQ.YD..COMPACTED TO 95%ASTM D-68. ap 6 7. FLEXIBLE BASE OF SAME THICKNESS MEETING REQUIREMENTS OF ITEM 301.5 OF THE STANDARD SPECIFICATIONS MAY BE SUBSTITUTED FOR UME STABILIZED SUBCRADE. 1 ,-^ -au.o w� STREET CLASSIFICATION STREET WIDTH PAVEMENT SUBCRADE STEEL e k. THICKNESS NICENESS REINFORCING LL ySy '..E.15 LOCAL RESIDENTIAL STREET 30'FACE TO FACE 6'CONCRETE 6'TREATED SUBCRADE /4 BARS 0 18'O.C.E.W. `ih LOCAL INDUSTRIAL/COMMERCIAL STREET 36'FACE TO FACE 7'CONCRETE 6'TREATED SUBGRADE R4 BARS 0 18'O.C.E.W. sa 5 al E MINOR&MAJOR COLLECTORS&ARTERIALS GREATER THAN 36' FACE TO FACE 8'CONCRETE B'TREATED SUBGRADE /5 BARS 0 18'O.C.E.W. °T O `ot nw 0 o 1EE^v 42$ CONCRETE^V 0 io*r PAVEMENT SECTION r° NOT TO SCALE q U S 3$ CITY OF WICHITA FALLS,TX CONCRETE Ili PAVEMENT SECTION PAVEMENT STANDARDS ENGINEERING DIVISION E: SEPTEMBER 2023 DETAIL NO. 2000 6 i V W I Q a i I 0 B STREET WIDTH FACE TO FACE TYPE O H.M.A.C. OPTIONAL MOUNTABLE CURB AND SURFACE(ITEM 302.9) 12" FTP BOTH SIDES.) CUTTER,LOCAL RESIDENTIAL STREETS ONLY.SEE APPUCABLE DETAIL 6"CURB&GUTTER DETAIL SEE APPUCABLE DETAIL 6" i � UME STABIUZED(ITEM 301) TYPE B H.M.A.C. PRIME COAT(ITEM 302.7) COMPACTED TO 95%ASTM D-698 (ITEM 302.9) MC-30.0.2 GAL/SO ID MIN. x g- GENERAL NOTES: c 8 d 1. AFTER COMPACTION, THE HMAC MUST BE WITHIN 1/4"TO I/2"ABOVE TOP OF UP OF GUTTER. o o.x • •= 2. SEE ASPHALT PAVEMENT,ITEM 302 OF THE STANDARD SPECIFICATIONS. TO� c°E 3. BACKFILL FROM BACK OF CURB TO RIGHT OF WAY UNE MUST BE COMPACTED TO 90%OF ASTM D-698. 3 E2 m 4. SUB GRADE PREPARATION MUST CONSIST OF UME STABILIZATION IN ACCORDANCE WITH ITEM 301.2 OF THE 6 c STANDARD SPECIFICATIONS,APPUED AT A RATE OF 30 LBS./SQ.YD..COMPACTED TO 95%ASTM 0-698. 2 n", 5. FLEXIBLE BASE OF SAME THICKNESS.MEETING REQUIREMENTS OF ITEM 301.5 OF THE STANDARD 52 g'QI SPECIFICATIONS,MAY BE SUBSTITUTED FOR LIME STABIUZED SUBGRADE. • 0 6. THE TYPE"8"ASPHALT UNDER THE CURB AND GUTTER MAY BE EUMINATED BY ADDITIONAL THICKNESS OF CONCRETE GUTTER TO MATCH ASPHALT PAVEMENT SECTION. off$ cob i3= SURFACE COURSE BASE COURSE SUBGRADE a o a STREET CLASSIFICATION THICKNESS THICKNESS THICKNESS -^i LOCAL RESIDENTIAL STREETS 2"TYPE D H.M.A.C. 4"TYPE B H.M.A.C. 6"TREATED SUBGRADE p O-5 LOCAL INDUSTRIAL/COMMERCIAL STREETS 2"TYPE D H.M.A.C. 6"TYPE B H.M.A.C. 6"TREATED SUBGRADE 0 g — ARTERIAL STREETS 2•TYPE D H.M.A.C. 8•TYPE B H.M.A.C. 8•TREATED SUBGRADE 1.4i MINOR do MAJOR COLLECTOR STREETS '5 a 8 org Sor n,o0 3 o "• i o$ ASPHALT a ti$ PAVEMENT SECTION NOT TO SCALE voCC rV O SS i CITY OF WICHITA FALLS,TX ASPHALT Et,t1 PAVEMENT SECTION PAVEMENT STANDARDS ENGINEERING DIVISION o E' SEPTEMBER 2023 DETAIL NO. 2010 -o B 0 0 6 P WU ZN W 3 w o. Y O N IT 6"(r .) 10'(TYP.) ., 6" (TIP.) WORKING SPACE WORKING SPACE BACKFlLL TOWARD ALLEY O 1/4'PER FOOT 1' T MIN.THICKNESS 6'MIN. THICKNESS ,:awilimi -- ----r----Amws=a,,,kswg-•43p -,t4c,;41/4:7,7,-*=*4* : ...,,k ,Isigko,,,c,wiw.-,, •‘/A's%,,IN i/eh.-4,>' 000, �♦♦ r a ♦: tx ♦ a S\ /4 BARS 0 12"O.C.E.W. BEND BARS TO MATCH BARS PLACED AT 1/2 DEPTH. SLOPE OF ALLEY t. 6'UME STABILIZED SUBGRADE x (ITEM 301.2)COMPACTED TO 95% PORTLAND CEMENT ASTM D-698 CONCRETE PAVEMENT cad opt °`9 27 - GENERAL NOTES: `�Fa Ea E. 1. SEE ALLEY PAVING ITEM 303.6 OF THE STANDARD SPECIFICATIONS. i O_ 2. SUB GRADE PREPARATION MUST CONSIST OF 6" UME STABILIZATION IN ACCORDANCE WITH ITEM 301.2 OF THE STANDARD SPECIFICATIONS,APPLIED AT A RATE OF 30 LBS./PER$O.Y0., v LL ICOMPACTED TO 95%ASTN D-698. 'a 3. 6"INCHES OF FLEXIBLE BASE MEETING THE REQUIREMENTS OF ITEM 301.5 OF THE STANDARD etE SPECIFICATIONS,MAY BE SUBSTITUTED FOR LIME STABILIZED SUBGRADE. U}V .6 S 4. ALL CONCRETE MUST SE CLASS'C'(COMPRESSIVE STRENGTH OF 3600 PSI 0 26 DAYS). U.; 5. ALL EXPOSED CONCRETE SURFACES MUST BE CURED IN ACCORDANCE WITH ITEM 303.5.7 OF THE Woo STANDARD SPECIFICATIONS. 6. EXPANSION JOINTS MUST BE PLACED AT EACH END OF THE ALLEY AND AT MAX.SPACING OF 300'. W.°pp 7. BACKFlLL ADJACENT TO CONCRETE EDGES TO A MINIMUM OF 901G STANDARD PROCTOR(ASTIR $y a D-698)IN 6"INCH LIFTS. 0 'Fs rf "o 8. CONSTRUCT SAWED CONTRACTION JOINTS AT 15'INTERVALS. o� f V�1 Zi Tl O n O Z ba ALLEY I o o PAVEMENT SECTION ! .^_i 1" NOT TO SCALE !!!!. P. ; oU g $-.21 CITY OF WICHITA FALLS,TX ALLEY i°0 5 PAVEMENT STANDARDS ENGINEERING DIVISION PAVEMENT SECTION Rao o E 5 SEPTEMBER 2023 DETAIL NO. 2040 o�6� _, qA g JOINT SEALANT 1/8"BELOW SURFACE,SEE TxDOT PUBLICATION DMS-6310,USE A CLASS F-1/4" CI 5 OR CLASS B MATERIAL. H I lay' n MIN. I c c DEPTH 6 CLOSED CELL EXPANDED a f POLYETHYLENE FOAM SACKER ROD e JOINT SEALANT JOINT SEALANT 1/8"TO BELOW SURFACE,SEE TxOOT PUBUCATION DMS-6310, USE A CLASS 1/4 5 OR CLASS 8 MATERIAL. DEPTH 1 a e a a gy a E a Y l , ' C l: o g o DEPTHf_. U G• • • . ,r , Z.,°- FIRST POUR ° 6 9 ° „ 4,SECOND POUR 0 IP 2 . a CONTINUOUS 15"MIN.OVERLAPS DFPTH REINFORCEMENT ;,5_ w l'o▪ if OWi c o b $U— 7:POa lei Z GENERAL NOTES: n 1 i 1. SEE CONSTRUCTION JOINTS,ITEM 303,54,4 OF THE STANDARD SPECIFICATIONS. `o or 0 aa� l pLV T • O 'J'o $»" I CONSTRUCTION JOINT Py_O n w NOT TO SCALE 9n v o5 o" $ll CITY OF WICHITA FALLS,TX g`o,D CONSTR�:CTION JOINT o § PAVEMENT STANDARDS ENGINEERING DIVISION E$ SEPTEMBER 2023 DETAIL NO. 2050 onb 0 _ 0 DI a 0 IV/4 DEFORMED BARS, SLEEVE OPPOSITE END JOINT SEALANT 1/8.BELOW SURFACE, OR 18'/4 SMOOTH BARS, SEE 6310.PUBLICATION. GREASE OPPOSITE END DMS- 310,USE A CLASS 5 OR CLASS 8. AT 18'C.C. 1/2. MIN. g T DEPTH • 4° e^."7 n n ICI a n 1.11.11111 1/2 DIE.PIN v!' r9 1'CLEARANCE r8a 2 1/2'REFLEX RUBBER EXPANSION JOINT MATERIAL OR CLOSED CELL EXTRUDED POLYPROPYLENE FOAM Ern JOINT MATERIAL. ° 44g44o I O}� ab GENERAL NOTES: c T^ 1. SEE EXPANSION JOINTS,ITEM 303.5.4.2 OF THE STANDARD SPECIFICATIONS. E 2. DOWEL BARS MUST BE ADEOUATELY BRACED WITH DOWEL BASKETS TO ASSURE THEY WILL BE MAINTAINED PERPENDICULAR AND LEVEL TO JOINT DURING PLACEMENT OF CONCRETE. 0aY a�o tia EXPANSION JOINT OEO w�n NOT TO SCALE gJA- o£ P° niV8• $=1 CITY OF WICHITA FALLS,TX EXPANSION JOINT W°' PAVEMENT STANDARDS ENGINEERING DIVISION 5Svo 5 SEPTEMBER 2023 DETAIL NO. 2051 oI`of ____ c z q g JOINT SEALANT 1/8°BELOW SURFACE.SEE TxDOT PUBLICATION DMS-6310,USE A CLASS F-1/4' i5 OR CLASS 8 MATERIAL K ip L ,_ , ,a ' a DEPTH I/z' ev MIN. 4 p <. d d a .. CLOSED CELL EXPANDED ' ° 4 POLYETHYLENE FOAM BACKER ROD JOINT SEALANT JOINT SEALANT 1/8°BELOW SURFACE.SEE TxDOT PUBLICATION DMS-6310,USE A CLASS 1/4 5 OR CLASS 8 MATERIAL DEPTH 1 a a ° p ,7 d a v: d d d a 4 o g d DEPTH • d a •a p ° • ° •4 4 ° `off F. da ° da d4 a E p a ° d e a: a a 1/2 DEPTH €n,� p a d a ni 52 W CONTINUOUS REINFORCEMENT on ,y1�ob VCV.' i W€kk` GLNERAI.NOTES: iI S 1. SEE CONTRACTION JOINTS.ITEM 303.5.4.3 OF THE STANDARD SPECIFICATIONS. ob S va.f 2 b 0 i- SAWED CONTRACTION JOINT ad'° NOT TO SCALE o o�° :Cu Ii . 5 ri CITY OF WICHITA FALLS,TX SAWED CONTRACTION o e PAVEMENT STANDARDS ENGINEERING DIVISION JOINT E 5 SEPTEMBER 2023 DETAIL NO. 2052 3I JOINT SEALANT 1/8"BELOW SURFACE.SEE 1/4' TxDOT PUBUCATION DMS-6310,USE A CLASS i I 5 OR CLASS 8 MATERIAL F 1/2' PN ' 1/4 = MIN. a DEPTH w c z " e = ° v, CLOSED CELL EXPANDED w POLYETHYLENE FOAM q BACKER ROD P., JOINT SEALANT JOINT SEALANT 1/8"TO BELOW SURFACE.SEE TxDOT PUBLCAI1ON DMS-.8310,USE A CLASS 1/4 5 OR CLASS 8 MATERIAL. DEPTH 1 c aG Ftl v d a' ^ • e • A H DEPTH • G1 • • • ' a c _ FIRST POUR "' 4 1^ ., ,SECOND POUR IL e CONTINUOUS 1/2" REINFORCEMENT -15"MIN.OVERLAP DEPTH USE WHEN EXPANSION JOINT IS NOT REQUIRED .Jl n c6gd °88 JOINT SEALANT I/8"BELOW SURFACE. °- IV/4 SMOOTH BARS Al18"O.C.c - SEE TxDOT PUBLICATION.c E GREASE THIS END(CENTERED IN SLAB) DMS-6310.USE A CLASS 5 OR CLASS 8. 1 2 I<Eaarn MIN. DRILL 1/2'X 10'HOLE FOR i o`. SNUG FIT OF DOWEL IN bra a< q_ T-- ,li m SS o DEPTH l a 1U;; NEV CONCRETE PAVEMENT EXISTING CONCRETE PAVEMENT .8 8•x 1/2"REFLEX RUBBER EXPANSION 1'CLEARANCE S. 4 § JOINT MATERIAL OR CLOSED CELL EXTRUDED POLYPROPYLENE FOAM JOINT MATERIAL L O VL o s; USE WHEN EXPANSION JOINT IS REQUIRED 0 V IS 5 os GENERAL NOTES: ),�O $ o 1. IF EXPANSION JOINT IS NOT REWIRED,INSTALL PER CONSTRUCTION JOINT DETAIL vY .i 2. SEE EXPANSION JOINTS,ITEM 303.5.4.2 OF THE STANDARD SPECIFICATIONS. am€5 EXISTING PAVEMENT ovs TIE-IN JOINT u r O NOT TO SCALE 1c3 5g CITY OF WICHITA FALLS,TX EXISTING PAVEMENT $n o 5 PAVEMENT STANDARDS ENGINEERING DIVISION TIE-IN JOINT 'E$ SEPTEMBER 2023 DETAIL NO. 2053 0g.9, `c 0 MINOR COLLECTOR z LOCAL INDUSTRIAL/COMMERCIAL ST. g LOCAL RESIDENTIAL ST. EXPANSION JOINTS(SPACED 250'MAXIMUM: LOCATE AT E CONSTRUCTION JOINT INTERSECTIONS,P.C.'S&P.T.'S,CUL-DE-SACS&KNUCKLES) OR kCNGIIUOINAL CONTRACTION JOINT. 1 i RIGHT OF WAY SAWED TRANSVERSE c � CONTRACTIONS JOINTS \ z a Ph 1 0 Zgo o 4Z-4B §u 1 -- - CONSTRUCTION JOINT OR SAWED TRANSVERSE RIGHT OF WAY LONGITUDINAL CONTRACRON CONTRACTIONS JOINTS I JOINT,EVENLY SPACED. I I _ 30'-36. RIGHT OF WAY SAWED TRANSVERSE CONTRACTIONS JOINTS LOCAL RESIDENTIAL ST. LOCAL INDUSTRIAL/COMMERCIAL v:e yA ST.MINOR COLLECTOR cg5d .R`i 10'R a.▪02 40 FLOWUNE RADIUS 40'FLOWUNE RADIUS o'It \ F '. EXPANSION JOINT 4� -- g8 E O $ z"6b IV= 10'R 30'R 5'E o 10'R 10'R T3 S 1 R EXPANSION JOINT 1 EXPANSION JOINT it. 4€ CUL-DE-SAC KNUCKLE U E,,� O � b GENERAL NOTES. nb0 0 $as 1. SAWED TRANSVERSE CONTRACTION JOINTS MUST BE SPACED AT 15'MAX.SPACING. .0$ P✓O SPACING DIAGRAM FOR JOINTS �Vp o#- NOT TO SCALE Pa,'; o" Ea€ oIM SS t CITY OF WICHITA FALLS,TX SPACING DIAGRAM FOR JOINTS W" PAVEMENT STANDARDS ENGINEERING DIVISION ?boo 'E0' SEPTEMBER 2023 DETAIL NO. 2060 P y 0 a w E U O LL s i J 2 F O U O A A 4m— m�mm—mg, J — 1 o a Trip! a w:7 ® 1�2 I N f �jr.17: ,_ 6. N N C �a PAVEMENT 6• �� - I PAVEMENT SLAB STEEL I �¢yI ,. SLAB STEEL 3• 1 3 Is r.1 I I r I L 1-1__ ., Y #5 BARS 0 7-C-C CLEAR J- c 8 w 3 #5 TRANSVERSE BAR 2— 1•_g• (TIP.OF 8 PER ANCHOR) .E' s�� 'L O— ,y a g GENERAL NOTES: ��`B 1. DETAILS AS TO PAVEMENT SLAB'MOTH,THICKNESS.AND CROWN `o€u CROSS-SLOPE MUST BE AS SHORN ELSEWHERE ON THE PLANS. 0*, 2. THE CONCRETE PAVEMENT SLAB MUST CONTINUE ACROSS THE ANCHOR a,n LUGS AS SHORN. x51• 3. REINFORCING FOR THE ANCHOR LUGS MUST BE STEEL CONFORMING TO v ASTM DESIGNATION A615,GRADE 60 OR A-616,GRADE 60. ALL STEEL IN t5 E LUGS AND SUPPORT SLAB MUST BE/5 BARS. 4. SAWCUT TRANSVERSE CONTRACTION JOINTS WILL NOT BE PERMITTED WITHIN LL CI THE UNITS OF THE ANCHOR LUGS WITHOUT THE APPROVAL OF THE c ENGINEER. 5. FOR CONCRETE PAVEMENT SECTION SEE APPUCABLE DETAIL. rgiE V g.r2 I Q•. O ..0 4s TERMINAL ANCHOR FOR CONCRETE PAVEMENT 242 .0 t w NOT TO SCALE 9os gii CITY OF WICHITA FALLS,TX TERMINAL ANCHOR FOR i o o§ PAVEMENT STANDARDS ENGINEERING DIVISION CONCRETE PAVEMENT 3 o E g SEPTEMBER 2023 DETAIL NO. 2070 o h`6 P 0 0 F- a a E u 4 f Z EXPANSION JOINT WITH 18• q - 1-6' /4 SMOOTH DOWEL BAR 6 ON 18"CENTER I. + t2 � w d 4 n r \ , n 6• N T \\ < II714' I W �t PAVEMENT 8• -.--1 c1 PAVEMENT SLAB STEEL I 4 I SLAB STEEL n 3• _ -1 -3. "+ I. <, 01 1 ,.IA • I I II 3, 0• 1 .- I n I` I Y i vr' •y,Q #5 BARS O c 'S 7•C-C CLEAR ,. ,•J °c,3 � /5 TRANSVERSE BAR 1'-6" (TW,OF 6 PER ANCHOR) tE n c P GENERAL NOTES: iI`a 1. DETAILS AS TO PAVEMENT SLAB WIDTH,THICKNESS,AND CROWN $ E CROSS-SLOPE MUST BE AS SHOWN ELSEWHERE ON THE PLANS. o 0 2. REINFORCING FOR THE ANCHOR LUGS MUST BE STEEL CONFORMING TO a`o ASTM DESIGNATION A615,GRADE 60 OR A-616,GRADE 60. ALL STEEL IN . LUGS AND SUPPORT SLAB MUST BE/5 BARS.1 .1.' 3. SAWCUT CONTRACTION JOINTS WILL NOT BE PERMITTED WITHIN THE UNITS ▪o OF THE ANCHOR LUGS VATHOUT THE APPROVAL OF THE ENGINEER. kk 4. SEE CONCRETE PAVEMENT SECTION AND EXPANSION JOINT.SEE APPUCABLE Sy DETAIL °65 L 0 44 t.Vi Cf ki g it ps TERMINAL ANCHOR WITH EXPANSION JOINT 12i FOR "t s y y CONCRETE PAVEMENT c*Y NOT TO SCALE Itv° s si CITY OF WICHITA FALLS,TX TERMINAL ANCHOR WITH EXPANSION ,5 o PAVEMENT STANDARDS ENGINEERING DIVISION JOINT FOR CONCRETE PAVEMENT i:I$ SEPTEMBER 2023 DETAIL NO. 2071 E 0 P 8 6 g I 1/q"R o - 18" 6"-..- c. N _I BARS•18 D.C. 111" 2%(TYP-) i BARS CONT. 3•11 3,R " r 1• 6• ••.Q I • 6• BACKFlLL SMTN SUITABLE a Ir a a ` MATERIAL COMPACTED TO 90%ASTM 0-698 ▪1▪1 \ 12• AND DRESS FROM BACK OF CURB TO RIGHT-OF-WAY LINE 6" ROADWAY • S ., • ` i� vY • 23 o 3" 12" is g is SUBGRADE(PER STREET CLASSIFICATION) EA COMPACTED TO 95%AS PER ASTM 0-696 n• fo$, ova GENERAL NOTES: 213 b I. DOWEL REINFORCEMENT 6"INTO EXISTING CURB AND GUTTER. i 4.°ig 2. CONSTRUCT 1/2"EXPANSION JOINTS AT 250'ON CENTER,INTERSECTIONS,PTS&PCS,AND CONTRACTION JOINTS AT 17 S 15'ON CENTER. • Si c 3. SEE CONCRETE CURB&GUTTER,ITEM 305.1 OF THE STANDARD SPECIFICATIONS. 3 4. ALL CONCRETE MUST BE CLASS"C"(COMPRESSIVE STRENGTH OF 3600 PSI 0 28 DAYS). �' 5. GANG WII I NOT RE ACCFPTFD AS COMPACTED SIIRORAGE.SAND W111 RE ALI OWED FOR LEVEL-UP ONLY (2"MAX.). .6 C 6. MATCH PAVEMENT THICKNESS WHEN PLACED MONOLITHIC WITH CONCRETE PAVEMENT. 5 Ka 7. PROVIDE 1"GUTTER DEPRESSION. moo$ 25• 0 o �• �'Ili 6" CURB AND GUTTER s •'�ao NOT TO SCALE 0 '5 El 1:15 s=4 CITY OF WICHITA FALLS,TX 6"CURB AND GUTTFR w'o PAVEMENT STANDARDS ENGINEERING DIVISION o E 5 SEPTEMBER 2023 DETAIL NO. 2120 c1.3 a a R Z A . - 24" � a F 12' a12• — FLAT i SECTION MIN.3"COVER OVER ifSTEEL IN TOP OF CURB. 10'R 1/41R 2X(TYP. 3 EA. FLOW UNE -10"R NBARS CONT. OF GUTTER � /�"/ii� 1" • • ,�,h/ �4. • .s • f_ < BACKFILL WITH SUITABLE MATERIAL COMPACTED ROADWAY ° ° a •/ TO 90%ASTM D-698 8' •• 12' AND DRESS FROM BACK . °. • ` g• OF CURB TO •• .. RIGHT-OF-WAY UNE e. ' '. 1 •' • "' • •• '. h..7*, :/A k P'1,.t" S4-,,> 70,- ...„,„,,,,,,,-....,A,.)/ "As‘'\`'‘VN,W4WW . .7% -N N.x..At.. .. ./ 3' 12' IZ €pi 6' SUBCRADE(PER STREET 5_ a.o3 CLASSIFICATION)COMPACTED TO /4 18 BARS 0 18'O.C. �• 95%AS PER ASTBA D-698 1G El •^o b .P O'er G ova GENERAL NOTES; T6 h 1. DOWEL REINFORCEMENT 6"INTO EXISTING CURB AND GUTTER. V. 2. CONSTRUCT 1/2"EXPANSION JOINTS AT 250'ON CENTER,INTERSECTIONS,PTS&PCS,AND CONTRACTION JOINTS AT °'o 0 15'ON CENTER. Wry LL 3. SEE CONCRETE CURB&GUTTER,ITEM 305.1 OF THE STANDARD SPECIFICATIONS. e 4. ALL CONCRETE MUST BE CLASS'C'(COMPRESSIVE STRENGTH OF 3600 PSI 0 28 DAYS). 1-• 5. SAND WILL NO7 BE ACCEPTED AS COMPACTED SUBCRADE.SAND WILL BE ALLOWED FOR LEVEL-UP ONLY (2'MAX.). 6. MATCH PAVEMENT THICKNESS WHEN PLACED MONOLITHIC WITH CONCRETE PAVEMENT. v�€ 7. PROVIDE 1'CUTTER DEPRESSION. ;nah v$ �.SS o 1 n CURB AND GUTTER Ili MOUNTABLE It'. NOT TO SCALE o23 ;Al CITY OF WICHITA FALLS,TX CURB AND GUTTER ` PAVEMENT STANDARDS ENGINEERING DIVISION MOUNTABLE �W°�oo N o E$ SEPTEMBER 2023 DETAIL NO. 2121 254a E 0 I vARrES 8 EXPANSION JOINT -- --- 46 I I I EXPANSION JOINT II I I II 1 I I I I R=15'MIN.FOR RESIDENTIAL g 8"CONCRETE PoTH/4 BARS STREETS AND 20'MIN. FOR g 0 16'O.C.E.W. MAJOR STREETS I X IF CRONIJ IS 2'OR LESS,X=10' - 15'R MIN. IF CROWN IS GREATER THAN 2'.X=20• 15 R MIN. Fa .\ ——— i EXPANSION JOINT MAINTAIN GUTTER EXPANSION JOINT LINE DEPRESSION INTERSECTION VALLEY GUTTER TRANSITION DISTANCE ~SEE TABLE 1 r i I F STREET - #4 BARS 0 16'O.C.E.W. Z 1-1/2'-ON LOCAL STREETS 1'ON ALL OTHER MAJOR STREETS 11 OR AS DIRECTED BY THE CITY ENGINEER g� --_----_.-- • io `9 76 F c II,Is GUTTER UNE PIIIIIMil 2 g« 8"FLEXBASE OR 8"USE STABIUZEO SUBGRADE(ITEM 301.2)COMPACTED TO •n., 95%ASTM D-698,APPUEO AT A RATE 10'ON RESIDENTIAL STREETS 82 o OF 40 LBS./SO.YD, 15'ON MAJOR STREETS o m $u E CROWN OF TRANSITION o*oo ROADWAY(In.) DISTANCE(1t.) a.o _ Cr c 0. hhra Cr 1' 10' P O o _.... _......._,._ __ wg` 2' 20' ^iS 3. 30 Ogc • S MIDSTREET VALLEY GUTTER ....• g GENERAL NOTES. . 0 1, ALL CONCRETE MUST BE CLASS'C'(COMPRESSIVE STRENGTH OF 3600 PSI 0 28 DAYS). 0 -g n.- 2. ALL EXPOSED CONCRETE SURFACES MUST BE CURED IN ACCORDANCE WITH ITEM 303.5.7 iLL$ OF THE STANDARD SPECIFICATIONS. g.m-5a CONCRETE o " VALLEY GUTTER c D c NOT TO SCALE aG if $$; CITY OF WICHITA FALLS,TX CONCRETE f5.811 VALLEY GUTTER Roo PAVEMENT STANDARDS ENGINEERING DIVISION o El' SEPTEMBER 2023 DETAIL NO. 2130 SI 0 NOTE: - f SLOPE SIDEWALK AS NECESSARY W I TO MEET ADA REQUIREMENTS 12'.0"MINIMUM ff (TYPICAL BOTH SIDES) WIDTH OF DRIVE 6 (SEE NOTE I) SO-0"MAX. ✓ :<2W IJ yZ aPe 3g r g g-R 8 1/2"EXPANSION __ _ _. __ 1,-0"(TYP.) 86R6I JOINT 1 SIDES F ROW . t <I a. g/ • K e 5' " " a . a STANDARD 4' I N ° SIDEWALK 7'R.i I ii._ MIN. . <a "°° • 7'R MN. �' W a •e 7. ae i ~/if EXISTING CURB CONTRACTION JOINT J TO REMAIN ` A STR ETN TOf O BE EXISTING CON REMO D ORETE SAWCUT EXISTING CURB FULL DEPTH AND PLACE EXPANSION MAINTAIN GUTTER JOINTS WITH 18",+4 DOWEL BARS LINE DEPRESSION SAWCUT CONCRETE STREET INTO CURB(TYP.BOTH SIDES) FULL DEPTH AT 12"FROM PLAN BACK OF CURB. A 0 SLOPE DRIVEWAY AS 5'SIDEWALK MAX SLOPE Ey -NECESSARY TO MEET 0 APPROACH 1"1/2"PER FOOT-� ,c,e ADA REOUIREMENTS TO FLOWUNE 24" MAINTAIN GUTTER `o�.. UNE DEPRESSION : EXISTING CURB TO o NTRACTION REMOVED 1/2"EXP.JOINT SAWCUT CONCRETE STREET o CON 27L MAX. r 8" ,PINT FULL DEPTH AT 12"FROM sg E2 S DRIVEWAY a —- BACK OF CURB. og fY$ 6"CONCRETE WITI O 0 /3 BARS O 18"O.C.E.W. ___ _ _ _ _4 g 2 u o OR EXISTING CONCRETE v o* /4 BARS 0 24"O.C .W..E STREET TO REMAIN Ft b SECTION OF EXISTING CONCRETE c�V�, COMPACT SUBGRADE TO 95W ASTM D-698 STREET TO BE REMOVED .poi SECTION A-A lc#4 TIE BARS 0 Or O.C. b7a$` GENERAL NOTES: i 4 t 1. SLOPE OF SIDEWALK AT DRIVE APPROACHES MUST COMPLY WITH ADA REQUIREMENTS(1"PER FOOT MAXIMUM). $1LL c o.§S. 2. SEE DRIVE APPROACHES,ITEM 305.2 CIF THE STANDARD SPECIFICATIONS. 3. ALL CONCRETE MUST BE CLASS"C"(COMPRESSIVE STRENGTH OF 3600 PSI 0 28 DAYS). 9, E0 4. SAND WILL NOT BE ACCEPTED AS COMPACTED SUBGRADE.SAND WILL BE ALLOWED FOR LEVEL-UP ONLY. o e`b 5. ALL STEEL MUST HAVE A 2"MINIMUM COVER. 50 u 0 6. REBAR MUST STOP 2"PRIOR TO EDGE OF EXISTING STREET. 7. ANY UTILITY BOXES OR MANHOLES WITHIN THE APPROACH MUST BE ADJUSTED BY THE CITY UTILITY DEPARTMENT,OR $ OWNER OF UTILITY,TO BE FLUSH WITH FINISH GRADE,OR RELOCATED OUT OF THE APPROACH TO THE PROPER GRADE. 12$ ALL ADJUSTMENT COST WILL BE THE RESPONSIBILITY OF THE CONTRACTOR,OR THE OWNER INSTALLING THE APPROACH. °w,°5 il_^ RESIDENTIAL DRIVE APPROACH o6 CONCRETE STREET v Z° NOT TO SCALE 10 g $$i CITY OF WICHITA FALLS,TX RESIDENTIAL DRIVE APPROACH goo 6 § PAVEMENT STANDARDS ENGINEERING DIVISION CONCRETE STREET 000 q e� SEPTEMBER 2023 DETAIL NO, 2140 0 G I`!. q 0 iil ^ s NOTE: = SLOPE SIDEWALK AS NECESSARY 12' 0'MINIMUM Ik TO MEET ADA REQUIREMENTS �• WIDTH OF DRIVE < (TYPICAL BOTH SIDES) 30'-0'MAX. (SEE NOTE 1) <W '' � 4 < o§ V aag 1/2'EXPANSION w W JOINT 3 SIDES o —I'-0'(rep.) ¢ A F ROW — ROW TA " t M f a . lal Cr II 1 STANDARD 4' z 5'• ° e ' STANDARD 4' SIDEWALK `a a ° ° SIDEWALK IT) N- jr TR. ° EXISTING CURB A: in ° a, 7RMIN.CONACTIONJOINTiii GUR TO REMAIN > e SAWCUT EXISTING CURB ANDGUTTER FULL DEPTH AND PLACE SAWCUT TO A 1 ' A\ ° MAINTAIN GUTTER EXPANSION JOINTS WITH 3-18'/4 NEAT.CLEAN EDGE UNE DEPRESSION DOWEL BARS INTO CURB AND PLAN FORM THIS EDGE GUTTER(TIP.BOTH SIDES) 3 SLOPE DRIVEWAY AS re 1 O NECESSARY TO MEET 5'SIDEWALK MAX SLOPE t� STANDARD - 0 APPROACH - 1-1/2"PER FOOT • EXISTING CURB do GUTTER IliREQUIREMENTS TO FLOWIINE • TO BE REMOVED o l 8 I MAINTAIN GUTTER v S 1 UNE DEPRESSION . 9 CONTRACTION JOINT �'c EXISTING ASPHALT x g 2%MAX. r 6' TO REMAIN a I • S L4 DRIVEWAY + •'—.— — — 62 1/Y EXPANSION JOINT 0 9'c 6"CONCRETE WITH COMPACT SUBGRADE TO o§g /3 BARS O 18'O.C.E.W. 95%ASTM D-698 \SA1 TO A o,c% OR NEAT,CLEAN EDGE fiY� #4 BARS 0 24'O.C.E.W. SECTION A-A x�� Cg` GENERAL NOTES: CPC W .-^6 1. SLOPE OF SIDEWALK AT DRIVE APPROACHES MUST COMPLY WITH ADA REQUIREMENTS(1"PER FOOT MAXIMUM). 38_ 2. SEE DRIVE APPROACHES.ITEM 305.2 OF THE STANDARD SPECIFICATIONS. ' 3. ALL CONCRETE MUST BE CLASS'C'(COMPRESSIVE STRENGTH OF 3600 PSI 0 28 DAYS). Ta 4. SAND VALL NOT BE ACCEPTED AS COMPACTED SUOGRADE.SAND WILL BE ALLOWED FOR LEVEL-UP ONLY. i5 .� 5. ALL STEEL MUST HAVE A 2'MINIMUM COVER. 5 os 6. REBAR MUST STOP 2"PRIOR TO EDGE OF EXISTING STREET. a �l o 0 7. ANY UTILITY BOXES OR MANHOLES WITHIN THE APPROACH MUST BE ADJUSTED BY THE CITY UTILITY DEPARTMENT.OR $no OWNER OF UTUTY, TO BE FLUSH WITH FINISH GRADE,OR RELOCATED OUT OF THE APPROACH TO THE PROPER GRADE. E?$ ALL ADJUSTMENT COST WILL BE THE RESPONSIBIUTY OF THE CONTRACTOR,OR THE OWNER INSTAWNG THE APPROACH. ms RESIDENTIAL DRIVE APPROACH Va ASPHALT STREET e D c NOT TO SCALE a(3 S 5$1 CITY OF WICHITA FALLS,TX RESIDENTIAL DRIVE APPROACH 6151,1 PAVEMENT STANDARDS ENGINEERING DIVISION ASPHALT STREET S 1R'.4 SEPTEMBER 2023 DETAIL NO. 2145 I w 0 E E NOTE: SLOPE SIDEWALK AS NECESSARY 12'-0"MINIMUM TO MEET ADA REQUIREMENTS WIDTH OF DRIVE (TYPICAL BOTH SIDES) �� 35'-0"MAX. (SEE NOTE 1) ai o I/2"EXPANSION Pc ;2 4 JOINT 3 SIDES c. Eigl CONTRACTION JOINT W 1'-0"(TYP.) 3 A DETECTABLE WARN NG SURFACE ZNw� ARMOR-TILE CAST IN PLACE OR 4 i EQUIVALENT U .PT - - ROW -_.— ° . -- ROW— 3 �/ y' >c . I 5' STANDARD 4 l s . �ooc SIDEWALK "n' n c. a • gIg^i 1 < ° 6"CURBS AS . . ° ° ° ° 10'R.MIN. 12 >1 REQUIRED ° ° .° a ° S. ( ) .1 a r . . . .... _,,,,_ MAINTAIN GUTTER UNE DEPRESSION - A SECTION OF EXISTING CONCRETE EXISTING CURB TO REMAIN SAWCUT EXISTING CURB FULL DEPTH STREET TO BE REMOVED AND PLACE EXPANSION JOINTS WITH 18"#4 DOWEL BARS INTO CURB AND PLAN SAWWT CONCRETE STREET FULL DEPTH GUTTER(TW. BOTH SIDES) AT 12'FROM BACK OF CURB. SLOPE DRIVEWAY AS C MAX SLOPE NECESSARY TO MEET 5'SIDEWALK I-1/2°PER FOO7 :61», ADA REQUIREMENTS 0 APPROACH TO FLOWLNE 5 24' - MAINTAIN GUTTER co g UNE DEPRESSION r 1So g EXISTING CURB TO 5 2"EXP.JOINT BE REMOVED / SAWOUT CONCRETE STREET c c 2%MAX. 6 CONTRACTION JOINT FULL DEPTH AT 12'FROM 3 E� DRIVEWAY - __ _ BACK OF CURB, 1_ - i I E 4 COMPACT SUBGRADE TO - -' f_B 95%ASTM D-698 S* v•-I E B"CONCRETE W1TN oho /3 BARS O 16'O.C.E.W. SECTION OF EXISTING CONCRETE EXISTING CONCRETE a o b OR STREET TO BE REMOVED STREET TO REMAIN a /4 BARS 0 24"O.C.EW. 18%/4 TIE BARS 0 18"O.C. GENERAL NOTES: SECTION A-A LLi 1 1. SLOPE OF SIDEWALK Al DRIVE APPROACHES.AND DETECTABLE WARNING SURFACES MUST COMPLY WITH ADA c REQUIREMENTS(1"PER FOOT MAXIMUM). 0 o- 2. SEE DRIVE APPROACHES,ITEM 305.2 OF THE STANDARD SPECIFICATIONS. ii 3. ALL CONCRETE MUST BE CLASS"C.(COMPRESSIVE STRENGTH OF 3600 PSI 0 28 DAYS). 2 4. SAND WILL NOT BE ACCEPTED AS COMPACTED SUBCRADE.SAND WILL BE ALLOWED FOR LEVEL-UP ONLY. t3 £,2 581 5. ALL STEEL MUST NAVE A 2"MINIMUM COVER. 2'1 6. REBAR MUST STOP 2"PRIOR TO EDGE OF EXISTING STREET. 1 4"' 7. ANY UTILITY BOXES OR MANHOLES WITHN THE APPROACH MUST BE ADJUSTED BY THE CITY UTIUTY DEPARTMENT.OR �,c� OWNER OF UTIUTY,TO BE FLUSH WITH FINISH GRADE,OR RELOCATED OUT OF THE APPROACH TO THE PROPER GRADE. O u$c ALL ADJUSTMENT COST WILL BE THE RESPONSIBILITY OF THE CONTRACTOR,OR THE OWNER INSTAWNC THE APPROACH. Pl O ^'5 a COMMERCIAL DRIVE APPROACH as CONCRETE STREET co PI NOT TO SCALE $$1 CITY OF WICHITA FALLS,TX COMMERCIAL DRIVE APPROACH aE 52§ PAVEMENT STANDARDS ENGINEERING DIVISION CONCRETE STREET a c Eg SEPTEMBER 2023 DETAIL NO. 2150 0 r Vl A NOTE: Y SLOPE SIDEWALK AS NECESSARY 12' 0'MINIMUM °� TO MEET ADA REQUIREMENTS WIDTH OF DRIVE t (TYPICAL BOTH SIDES) 35.-0"MAX. (SEE NOTE 1) �, O ;5rz12 1/2"EXPANSION 7i 9 Rl i JOINT 3 SIDES - OW 1� CONTRACTION JOINT o r-0-(TTP�.) R�Q f A DETECTABLE WARNING SURFACE WWII ARMOR-TILE CAST IN PLACE OR 13 ? - EQUIVALENT a 5 ROW --— --—ROW— ° I °° t °o° <� S 'o°o STANDARD 4' h S n E000 ° K�ir. ° , e °o SIDEWALK °1 S • 4/1w 6"CURBS AS e ° a. ° < 10(R.MIN. 8 REQUIRED ° 4,.e <. O • a ' '° . ,._____ e<. . . I EXISTING CURB& SAWCUT EXISTING CURB AND GUTTER riPA MAINTAIN GUTTER GUTTER TO REMAIN FULL DEPTH AND PLACE EXPANSION UNE DEPRESSION JOINTS W TN 3-18'#4 DOWEL BARS INTO CURB AND GUTTER(TYP.BOTH SIDES) SAWCUT TO A NEAT CLEAN EDGE PLAN SLOPE DRIVEWAY AS s O 3 _NECESSARY TO MEET 5'SIDEWALK MAX SLOPE STANDARD O APPROACH 1-1/2'PER FOOT i REQUIREMENTS TO FLOWUNE EXISTING CURB&GUTTER ''S 4 TO BE REMOVED °Sg° MAINTAIN GUTTER a.°5 CONTRACTION JOINT C S UNE DEPRESSION E e 27I MAX 6 TEXISTING O REMAIN °E g, DRIVEWAY L Z 2 •�y �- �• • — - — i$: 1/2'EXPANSION JOINT °o • ° 6'CONCRETE WITH COMPACT SUBGRADE TO o$ o /3 BARS 0 18'O.C.E,W. 95R ASTM D-69B SAWCUT TO A NEAT OR CLEAN EDGE .°IS #4 BARS a 24'0.C.E.W. SECTION A-A Ca 12 • • GENERAL NOTES: W I. SLOPE OF SIDEWALK AT DRIVE APPROACHES,AND DETECTABLE WARNING SURFACES MUST COMPLY WITH ADA REQUIREMENTS(1'PER FOOT .• .. MAXIMUM). 0 2. SEE DRIVE APPROACHES.ITEM 305.20A OF THE STANDARD SPECIFICATIONS. 3 ' 3. ALL CONCRETE MUST BE CLASS"C"(COMPRESSIVE STRENGTH OF 3600 PSI 0 28 DAYS). °0° 4. SAND WALL NOT BE ACCEPTED AS COMPACTED SUBGRADE.SAND WILL BE ALLOWED FOR LEVEL-UP ONLY. o 5. ALL STEEL MUST HAVE A 2"MINIMUM COVER. ;°0 6. REBAR MUST STOP 2"PRIOR TO EDGE OF EXISTING STREET. $' S 7. ANY UTILTY BOXES OR MANHOLES WITHIN THE APPROACH MUST BE ADJUSTED BY THE CITY UTIUTY DEPARTMENT,OR OWNER OF UTILITY,TO E v BE FLUSH WITH FINISH GRADE,OR RELOCATED OUT OF THE APPROACH TO THE PROPER GRADE.ALL ADJUSTMENT COST WILL BE THE YI``° RESPONSIBILITY OF THE CONTRACTOR,OR THE OWNER INSTAWNG THE APPROACH. !rs° COMMERCIAL DRIVE APPROACH �-5n 3 f ASPHALT STREET ✓° .$ NOT TO SCALE nU S $yi CITY OF WICHITA FALLS,TX COMMERCIAL DRIVE APPROACH w o$S ASPHALT STREET 7 o PAVEMENT STANDARDS ENGINEERING DIVISION 'E SEPTEMBER 2023 DETAIL NO. 2155 a41 6 A 10'-O' a CONCRETE ALLEY `BEGIN APPROACH m Ci • . e 15'-0" 1/2"EXPANSION JOINT 7-0"TYP. ° " 7'-0"TYP. DETECTABLE WARNING SURFACE ARMOR-11LE CAST IN PLACE OR , 6"CURBS AS EQUIVALENT , • REQUIRED� • ROW a,.�a Jo°o ` 5' • 'VOQlC t 4'SIDEWALK '0°°0 °• K .d , a000 4'SIDEWALK 0 0 .° if ----` ° , ' ° CONTRACTION JOINT / • . • 1/2'EXPANSION S EXISTING CURB I/ ° . JOINT AND GUTTER 10'R TYP, • • • .' ° ° . 10'R TYP. SAW CUT EXISTING CURB AND A GUTTER FULL DEPTH AND PLACE SEE NOTE 6&7 1/2-EXPANSION JOINTS WITH 3-18" MAINTAIN GUTTER /4 DOWELS BARS INTO CURB AND LINE DEPRESSION GUTTER(TYP BOTH SIDES) o PLAN c D I 5'-0"SIDEWALK APPROACH ••• EXISTING CURB AND ,2 N r 0 APPROACH ONLY GUTTER TO BE REMOVED. CONTRACTION JOINT o 8J I MAINTAIN GUTTER LINE DEPRESSION ro9 1/4'PER FT 6. 1, EXISTING ASPHALT •° coNCRETE ALLEY 2%MAX. T 2'PER FOOT TO REMAIN E$f 12.5x MAR zn- �� "a y S8 E• 1/2"EXPANSION JOINT $ E 8'UNE STABILIZED SUBGRADE(ITEM SECTION A-A 6"CONCRETE WITH SEE N70TE o g v 301.2)COMPACTED TO 95%ASTM D-896r /4 BARS 0 12"O.C.E.W. •W.8 APPLIED Al A RATE OF 30 LBS./SQ.YD. GENERAL NOTES: x0. W a o 1. ALL CONCRETE MUST BE CLASS"C'(COMPRESSIVE STRENGTH OF 3600 PSI 0 28 OATS). r i 2. SEE DRIVE APPROACHES,ITEM 305.2 OF THE STANDARD SPECIFICATIONS. 3. ALL REINFORCING STEEL MUST HAVE A 2"MINIMUM COVER. g.' 4. REFERENCE'PAVEMENT SECTION ALLEY DETAIL",FOR SUBGRADE PREPARATION REQUIREMENTS FOR ALLEY APPROACHES. "P€ S. SAND YALL N07 BE ACCEPTED AS COMPACTED SUBGRADE.SAND WILL BE ALLOWED FOR LEVEL-UP ONLY. V Le 6. FOR CONCRETE PAVEMENT: •,.,N WHEN THE EXISTING CURB HAS BEEN PLACED MONOLITHIC PATH THE STREET PAVEMENT,SAW CVT 1HE STREET AT 12'FROM BACK OF CURB, o� FULL DEPTH,INSTALL 18 TIE BARS 0 18"O.C.INTO THE STREET. oho g 7. FOR ASPHALT PAVEMENT; o SAW CUT EXISTING PAVEMENT TO A NEAT,CLEAN EDGE. i18 0.3 c 8. SLOPE OF SIDEWALK AT DRIVE APPROACHES AND DETECTABLE WARNING SURFACES MUST COMPLY WITH ADA REQUIREMENTS(1"PER FOOT MAXIMUM). 2 3 ALLEY APPROACH 3f , `o o NOT TO SCALE 'Og 53 P CITY OF WICHITA FALLS,TX ALLEY APPROACH W•.O§ PAVEMENT STANDARDS ENGINEERING DIVISION o C.' SEPTEMBER 2023 DETAIL NO. 2160 F, 0 a R NOTE: f SLOPE SIDEWALK AS NECESSARY 12'-0"MINIMUM i TO MEET ADA REQUIREMENTS WIDTH OF DRIVE 2 (TYPICAL BOTH SIDES) 30'-0'MAX. 2 (SEE NOTE 1) • •>.'•F go 1 RW a O °d rc 1/2'EXPANSION rc N JOINT 3 SIDES A W i 0 ROW—--— -- . 1 W M bo STANDARD 4' Z '"5' c • STANDARD 4' SIDEWALK N • N° 'e I •• ,. a • n SIDEWALK I • e �� 7'R Wv , . a CONTRACTION JOINT (TTP) 6 5. L• • a . a i "a I _W1 — I _ D. A EXISTING MOUNTABLE CURB TO REMAIN PLAN W SLOPE DRIVEWAY AS SLOPE v 4. NECESSARY TO MEET 5'SIDEWALK 1 1/2X PER FOOT EXISTING MOUNTABLE STANDARD O APPROACH n REQUIREMENTS 70 FLOWUNE CURB TO REMAIN g62e I 3 0- CONTRACTION JOINT EXISTING ASPHALT EX 2X MAX. REMAIN o DRIVEWAY ismaimimacm 4 —/__TO_ a n i i//.,/%%/ ,/,l T 1/2 EXPANSION JOINT 0 ci'31 6"CONCRETE PATH COMPACT SUBGRADE TO f o$ /3 BARS 0 18'O.C.E.W. 95X ASTM D-698 OR 18"#4 TIE BARS 0 18"O.C. Ft b #4 BARS a 24"O.C.E.W. SECTION A-A 1U o 0 GENERAL NOTES: U'- 2 i 1. SLOPE OF SIDEWALK AT DRIVE APPROACHES MUST COMPLY WITH ADA REQUIREMENTS(1"PER FOOT MAXIMUM). c 4 c 2. SEE DRIVE APPROACHES,ITEM 305.2 OF THE STANDARD SPECIFICATIONS. $t O 3. ALL CONCRETE MUST BE CLASS"C'(COMPRESSIVE STRENGTH OF 3600 PSI 0 28 DAYS). o g c 4. SAND WILL NOT BE ACCEPTED AS COMPACTED SUBGRADE.SAND WILL BE ALLOWED FOR LEVEL-UP ONLY. 13 iF eF4 5. ALL STEEL MUST HAVE A 2'MINIMUM COVER. 5 e$ 6. REBAR MUST STOP 2'PRIOR TO EDGE OF EXISTING STREET. a.§ 7. ANY UTILITY BOXES OR MANHOLES WITHIN THE APPROACH MUST BE ADJUSTED BY THE CITY UTILITY DEPARTMENT.OR OWNER OF UTILITY,TO BE FLUSH WITH FINISH GRADE,OR RELOCATED OUT OF THE APPROACH TO THE PROPER GRADE. $='v ALL ADJUSTMENT COST WILL BE THE RESPONSIBIUTY OF THE CONTRACTOR,OR THE OWNER INSTALLING THE APPROACH. r4 b b RESIDENTIAL DRIVE APPROACH o-E WITH MOUNTABLE CURB c D 6 NOT TO SCALE :VS 5Zi CITY OF WICHITA FALLS,TX RESIDENTIAL DRIVE APPROACH t.611 WITH MOUNTABLE CURB oPAVEMENT STANDARDS ENGINEERING DIVISION N o 3 SEPTEMBER 2023 DETAIL NO. 2165 a�., Oj f N07E: SLOPE SIOEWAL%AS 1O'-0'MINIMUM NECESSARY TO MEET h ADA REQUIREMENTS WIDTH OF DRIVE At1/2"EXPANSI ip ON JOINT } 6 1/2"EXPANSION JOINT csi REQUIRED FOR SIDEWALK W 0 (7YP.BOTH SIDES) ,a, N9' 0icc IN E I'TP. IA 3:1 A CROW . ROW o a . - I } STANDARD ° ° a STANDARD I 4' • .5'.. 4' N SIDEWALK . '�' •• B S ° SIDEWALK 24' ° 1• �' CONTRACTION S S MIN. . JOINT !r FL DITCH ..a 15"MIN.PIP. FL DITCH s ° • - re MIN. 7R MIN' a • • � . < ° ° ° 1 3'SHOULDER a ° m u . n• <• ~l l r } ySAWCUT TO A NEAT, -\\_EDGE OF EXISTING CLEAN EDGE. A 3:1 SLOPED PAVEMENT END TREATMENT PLAN BOTH SIDES TIP.ISLOPE DRIVEWAY AS MAX SIDEWALX . SLOPE 5NECESSARY TO MEET 0 APPROACH 1-1/2" SHOULDER f EXISTING STANDARD REQUIREMENTS PERRFOOT PAVEMENT I TO REMAIN or I CONTRACTION JOINT '. p 2X MAX. 6" Olt _ — e EE3 6'MIN. ;®��//,,,, o B. COVER SAWCUT TO A NEAT. =o- 1/2'EXPANSION JOINT CLEAN EDGE. P• . D.- 6"CONCRETE WITH 15"MIN.PIPE COMPACT SUBGRADE aP e a /3 BARS 0 18'O.C.E.W. TO 95R ASTM D-698 b 2 o OR o} BARS 0 24 o.C,E.W. SECTION A-A y Va e I 5▪ ` GENERAL NOTES: 2L8 4 o T▪ iE 2. ALL CONCRETE MUST BE CLASS"C"(COMPRESSED STRENGTH OF 3600 PSI 0 28 DAYS). 3. SAND WILL NOT BE ACCEPTED AS COMPACTED SUBGRADE.SAND WILL BE ALLOWED FOR LEVEL-UP ONLY. o a E 4. ALL STEEL MUST HAVE A 2'MINIMUM COVER. CI 2.1 5. DRAINAGE PIPE SIZE WILL BE MINIMUM 15"DIAMETER.OR AS DETERMINED BY CITY ENGINEER.DRAINAGE CONDITIONS MAY ALLOW A DIP 2 o IN DRIVEWAY WITHOUT PIPE. a ° 6. ANY UTIUTY BOXES OR MANHOLES WITHIN THE APPROACH MUST BE ADJUSTED BY THE CITY UTIUIY DEPARTMENT.OR OWNER OF $ UTUTY,TO BE FLUSH WITH FINISH GRADE.OR RELOCATED OUT OF THE APPROACH TO THE PROPER GRADE.ALL ADJUSTMENT COST o WILL BE THE RESPONSIBIUTY OF THE CONTRACTOR, OR THE OWNER INSTAWNG THE APPROACH. „Y, DRIVE APPROACH P-€ RURAL STREET 5 u NOT TO SCALE :LTS s=# CITY OF WICHITA FALLS,TX DRIVE APPROACH "b PAVEMENT STANDARDS ENGINEERING DIVISION RURAL STREET 2Sv°o v'E$ SEPTEMBER 2023 DETAIL ND. 2170 o .,2 0 O o NUMBER OF DRIVI-WAY APPROACHES ALLOWED: • 1. NOT MORE THAN TWO DRIVEWAY APPROACHES WILL BE PERMITTED ON ANY TRACT WITH A FRONTAGE OF 100 FEET OR LESS. J 2. NOT MORE THAN THREE DRIVEWAY APPROACHES WILL BE PERMITTED ON ANY TRACT WITH FRONTAGE OF MORE THAN 100 FEET BUT 6 LESS THAN 300 FEET. t i 3. NOT MORE THAN FOUR DRIVEWAY APPROACHES WILL BE PERMITTED ON ANY TRACT WITH A FRONTAGE OF MORE THAN 300 FEET BUT LESS THAN 600 FEET. 4. FOR TRACTS WITH FRONTAGE WITH EXCESS OF 600 FEET,ONE ADDITIONAL APPROACH MAY BE ALLOWED FOR EACH ADDITIONAL 300 F FEET OF FRONTAGE IN EXCESS OF 600 FEET. b 2 >h W C $ 1 N 1 7— ALLEY RIGHT OF WAY ALLEY PAVING—' 14'MIN. PROPERTY UNE I • I • 30'MAX. 12'MIN. PROPERTY LINE "sr,`'I. `0,.'` I. 7'R MIN.J RIGHT OF WAY I zA I R 4'SIDEWALK o $ 4'SIDEWALK O g RIGHT OF WAY U I Ir 7RMIN. 15RMIN. a o oii F o 30'MAX30'MAX c 14'MIN. .. - 30'MIN. 12'MIN.—� 12'MIN. f3 p CL O ., c GENERAL NOTES. .62 *w1, 1. AT STREET INTERSECTIONS,NO CURB CUT FOR A DRIVEWAY APPROACH WILL BE PERMITTED WITHIN 30 FEET OF THE EXTENDED CURBUNE. c,t^,€ 2. ON INTERIOR LOTS,THE TANGENT POINT OF THE DRIVEWAY CURB AT THE STREET CURBUNE MUST NOT EXTEND BEYOND A PROPERTY UNE. u a5 3. THE WIDTH OR THROAT OF A DRIVEWAY APPROACH MUST NOT BE GREATER THAN 30 FEET FOR RESIDENTIAL USES. 'Tk5 £o0 0 1 30 "e RESIDENTIAL 4. APPROACH LOCATIONS P✓O 12 ▪ m NOT TO SCALE y o°o ~VI 5g i CITY OF WICHITA FALLS,TX RESIDENTIAL goo& PAVEMENT STANDARDS ENGINEERING DIVISION APPROACH LOCATIONS 5 SEPTEMBER 2023 DETAIL NO. 2180 any O 5'x5'HANDICAP PASSING AREA FOR SIDEWALKS WITH RUNS EXCEEDING 200' BETWEEN DRIVE APPROACHES. c to - 40'MAX. I F. Ate ' '. - --—--l-- ROW—-- -- -- -- ° 1 .•I "SLOPE WITH GRADE' e° • OF STREET • .,. • i '. , . . ,B - - \ - ': •.. 1. .: • 4'M[N. s• ° (TOP OF CURB) r. ° ° _ ' (SEE NOTE/5) A 1/2'EXPANSION JOINT 5'-0'(MAX.) 1/2'EXPANSION JOINT CONTRACTION JOINT PLAN 0 0 VARIES SEE SIDEWALK WIDTHS AND LOCATION DETAILS VARIES 4'-0'MIN,- I BACK OF CURB VARIES 2%MAX. // 3/4' E. o E 4 .0 c'- COMPACTED SUBGRADE e b 90%ASVD-698 H E #3 REBAR 0 18'O.C.E.W. z°I= CENTERED IN SLAB SECTION B-B ▪i_ SECTION A-A CONTRACTION JOINT bto 0N9 .5%b GENERAL NOTES: 1:▪ 1. SIDEWALK REINFORCING(EXCLUDING DRIVE APPROACHES)MUST BE#3 BARS 0 18'O.C.E.W.OR/4 BARS ON 24"O.C. -e ,E ' 2. ALL CONCRETE MUST BE CLASS'C',(COMPRESSIVE STRENGTH OF 3,600 PSI.0 28 DAYS.) oi 8 3. SAND WILL NOT BE ACCEPTED AS COMPACTED SUBGRADE. SAND WILL BE ALLOWED FOR LEVEL-UP ONLY. 4. ANY UTILITY BOXES OR MANHOLES WITHIN NE SIDEWALK MUST BE ADJUSTED BY THE CITY UTILITY DEPARTMENT,OR '52 OWNER OF UTIUTY,TO BE RUSH WITH FINISH GRADE,OR RELOCATED DUT OF THE SIDEWALK TO THE PROPER GRADE. B• ALL ADJUSTMENT COST WILL BE THE RESPONSIBIUTY OF THE CONTRACTOR,OR THE OWNER INSTALLING THE SIDEWALK. i5. CROSS SLOPE AT DRIVE APPROACHES AND RAMPS MUST COMPLY WITH ADA REQUIREMENTS. c (1 INCH PER FOOT MAXIMUM) i'c 6. IF SIDEWALK IS PLACED ADJACENT TO CURB,MINIMUM WIDTH SHALL BE 6'. a 3 c 7. PLACE SIDEWALK I'OFF ROW UNE.PROVIDE 5'MINIMUM WIDTH SIDEWALK IN COMMERCIAL AREAS WITH HEAVY E n" PEDESTRIAN MOVEMENTS. 10 2$ 8. SIDEWALKS INSTALLED WITHIN TX007 RIGHT OF WAY MUST BE A MINIMUM WIDTH OF 5'AND MEET REQUIREMENTS OF 5,9 5 TXDOT PEDESTRIAN STANDARDS. n'b n ;�� SIDEWALK 1,;"6 NOT TO SCALE n<J5 5▪5 CITY OF WICHITA FALLS,TX SIDEWALK _g,611 o PAVEMENT STANDARDS ENGINEERING DIVISION 'E 5 SEPTEMBER 2023 DETAIL NO. 2200 V R lo N 6 us —6'—...- I F 2" os 3/4"CHAMFER 3/4'CHAMFER ,,\'V- \\ • r WOODEN FORM.REQUIRED FOR TOP EDGE OF \\ WALL MUST BE REMOVED BEFORE BACKFILL I /4 BARS AT 18"CNTRS.BOTH WAYS. ...�CLASS"C'CONCRETE 18" MAX. \\\• •.. >\ PERMISSIBLE CONSTRUCTION JOINT VAI N TH 3"X 2'BLOCKOUT. \ ' �, •,. #4 BARS AT 12'CNTRS.BOTH WAYS \ . (USE/5 BENT BARS%MERE H EXCEEDS 3'). j�\\.. 25 MAXI ,-^ 1/4'R dr/ 6. 5:— z" /\\ .. . .- . . !,, . .' `i\//\\/\., f 5 2ot FLAT g}E v° s`ob rw w6 4 it GENERAL NOTES: 1. PROVIDE VERTICAL EXPANSION IN WALL AT 25'MAX.SPACING(USE EXPANSION JOINT DETAIL NO. 2051 1 t y WITN TXDOT TYPE A WATERSTOP AND MODIFY AS REQUIRED.) •C 2. WALL DESIGN ASSUMES NO SURCHARGE. A SPECIAL ENGINEERING ANALYSIS IS REQUIRED FOR OTHER r € CONDITIONS. 2 Es 3. STRAIGHT,CLEAN EXCAVATION WALL MAY BE USED AS FORM ON BACK OF WALL A WOODEN FORM IS REQUIRED FOR TOP EDGE OF WALL IF BACK SIDE OF WALL DOES NOT USE EXISTING SOIL AS A FORM, £g£ BACKFILL BEHIND WALL IN 8'UFTS COMPACTING TO 95K PER ASTM D-698. ....1.: `.. w9 �° SIDEWALK o$ WITH 18" RETAINING WALL `o r o NOT TO SCALE s=P CITY OF WICHITA FALLS,TX SIDEWALK Sa WITH 18"RETAINING WALL za R� PAVEMENT STANDARDS ENGINEERING DIVISION 'ES SEPTEMBER 2023 DETAIL NO. 2205 n o�a.� E 0 6 F o Zz V EXPANSION JOINT (r SEE DETAIL V IS o ri 4 aRtl�- E 3'R(TYP) ACCOMMODATE 5%MAX DRAINAGE AS RUNNING SLOPE NECESSARY EITHER DIRECTION -ter^ �� SAWED CONTRACTION JOINT(5'SPACING) SEE APPUCABLE DETAIL WIDTH VARIES A ...„..--- R,O.W. r ACCOMMODATE --- DRAINAGE AS -- NECESSARY ' A • EXPANSION JOINT AT R.O.W. SEE APPUCABLE DETAIL. a or .A PRIVATE 5 6 SIDEWALK E.y '2�� GENERAL NOTES: ELL` 1. APPROVAL REQUIRED FROM PARKS AND RECREATION $e FOR THE CIRCLE TRAIL CONNECTION.CONTACT E PARKS AND RECREATION AT 940-761-7490. o>:i 2 ENCROACHMENT AGREEMENT REQUIRED FOR THE E"6 6 CIRCLE TRAIL CONNECTION.CONTACT PROPERTY rp 2%MAX.SLOPE MANAGEMENT AT 940-761-8616. �c IN EITHER 3. TRAIL CONNECTION MUST BE MADE AS VARIES DIRECTION VARIES PERPENDICULAR TO EXISTING TRAIL AS POSSIBLE. / /Y�'/'. 4 SIDEWALK REINFORCING SHALL BE/4 BARS 0 18- �� ���� // /\� O.C.E.W.AND DOWELED INTO EXISTING TRAIL o 4/`%/��������I�/ �/\// 5. ALL CONCRETE MUST BE CLASS C.(COMPRESSIVE O T\ /•F v v vJ��j�G •v v/ STRENGTH OF 3.600 PSI.0 28 DAYS.) 6. " 6. SAND MILL NOT BE ACCEPTED AS COMPACTED ...e• .E #4 REBAR 0 16"O.C.E.W. SVBORAOE.SAND WILL BE ALLOWED FOR LEVEL-UP �4LL COMPACTED SUBGRAOE CENTERED IN SLAB AND ONLY. 90%ASTM D-698 DOWELED INTO EXISTING .tom,c$ TRAIL 7. INSTALLATION MAY REQUIRE PIPE AND DITCH WORK n o $ TO ACCOMMODATE DRAINAGE. .a SECTION A-A vo Irs a ^-5 w CIRCLE TRAIL CONNECTION ,Ni `o"$ NOT TO SCALE 1.ou $11 CITY OF WICHITA FALLS,TX CIRCLE TRAIL CONNECTION PAVEMENT STANDARDS ENGINEERING DIVISION Sao E' SEPTEMBER 2023 DETAIL NO. 2210 8 .▪ ,a E 0 Z I � a • tA gI - /:jIIIII N I-.-6—.-I FACE OF CURB - ') 1 _ 2'(T-YP.) 1� ti- t e ;E 2'(T-YP.) .513-^P 11Th IS o FACE OF CURBC„�EA' 11111 CP WA sI mil q44i iS 2,F 1 III 3 13 $ P CROSSWALK STRIPING PLAN i7v NOTE: NOT TO SCALE m�'° 1. STRIPING MUST BE WHITE,100 MIL THICK HOT APPUED THERMOPLASTIC'MTH DROP-ON GLASS TRAFFIC BEADS OR TYPE C vN PREFABRICATED PAVEMENT MARKINGS.MATERIAL, SURFACE PREPARATION, SEALER.AND INSTALLATION OF CROSSWALK PAVEMENT MARKINGS MUST BE IN ACCORDANCE WITH ITEMS 666,668,AND 676 OF T%DOT STANDARD SPECIFICATION FOR CONSTRUCTION AND MAINTENANCE OF HIGHWAYS,STREETS AND BRIDGES. ▪ s ill CITY OF WICHITA FALLS,TX CROSSWALK STRIPING PLAN Lk;°'§ PAVEMENT STANDARDS ENGINEERING DIVISION d'E SEPTEMBER 2023 DETAIL NO. 2400 0 .-3 0 0 ry to 0 a E W V K i m r I 0 Y 4'MIN.-24'MAX. cm 6'MAX. SPACING - 2"X 8"CCA TREATED RAIL 5/6"CARRIAGE BOLT _[-8"TO 12" \O\ ' ,'' 20" II / Llib&.. 4r1Ar__ 20" II S'MIN. L\0\1V/ArAr 0 sA 6'MIN.DIA.CCA 0 8? TREATED POSTS �°� GROUND SURFACE , Mc_ i Es I "I '\ r I I E°' I a6"WOE STRIPES I I. WHITE AND ORANGE o._ REFLECTIVE PER I F I 36' TxMUTCD. „$w $15 0 -11 4" i."40 ICI y• _�:� 5 0 t{ CONSOLIDATED rYW. I 12" CONCRETE nI w€ 4"PEA GRAVEL ;Is r NOTE: o S u 1. STRIPES ON BARRICADE SHALL BE ALTERNATING WHITE AND ORANGE RETROREFLECTVE SHEETING WITH STRIPES SLOPING DOWNWARD AT AN ANGLE OF 45 DEGREES IN THE DIRECTION ROAD USERS ARE TO PASS.BARRICADE SHALL BE U a€ Y CONSTRUCTED AND INSTALLED IN ACCORDANCE WITH THE TxMUTCD. cl Dgo .2 0 $^o DEAD END STREET TYPE III BARRICADE DETAIL v-50 w NOT TO SCALE o" aU; .;._I CITY OF WICHITA FALLS,TX DEAD END STREET °1§ PAVEMENT STANDARDS ENGINEERING DIVISION TYPE III BARRICADE DETAIL 3!I5 SEPTEMBER 2023 DETAIL NO. 2410 2g.t.4 - Exhibit 3 M+ i C a1 fe glimujBLUE SKIES. GOLDEN OPPORTUNITIES. STORMWATER DESIGN MANUAL CITY OF WICHITA FALLS,TEXAS PUBLIC WORKS DEPARTMENT 1300 SEVENTH STREET WICHITA FALLS,TEXAS 76301 Approved by: c-1 ��. ussell Schreiber, P.E., Public Works Director Effective Date: 44/frt �` 2 ,2011 TABLE OF CONTENTS 1.0 INTRODUCTION 1.1 Purpose and Scope 2.0 DEVELOPMENT PROCESS 2.1 Predevelopment Conference 2.2 Concept/Preliminary Study 2.3 Final Study/Construction Plans 2.4 Construction Review and Engineer Certification 2.4.1 Public Drainage Improvements 2.4.2 Privately Maintained Drainage Improvements 3.0 DESIGN CRITERIA 3.1 Hydrology 3.1.1 Hydrologic Methods 3.1.2 Rainfall Estimation 3.1.3 Rational Method 3.1.4 Modified Rational Method 3.1.5 SCS Method 3.1.6 Snyder's Unit Hydrograph Method 3.2 Downstream Assessment 3.3 Hydraulics 3.3.1 Streets 3.3.2 Closed Conduits 3.3.3 Storage Design 3.3.4 Open Channels 3.3.5 Culverts 3.3.6 Bridges 3.3.7 Energy Dissipation 4.0 APPENDIX Detention Facilities Agreement 1.0 INTRODUCTION: 1.1 Purpose and Scope The development of this design manual is authorized by the City of Wichita Falls' Stormwater Management Ordinance (the "Stormwater Ordinance") to protect and provide for the safety and welfare of the general public and to mitigate flood damage to private and public property within the City and its extraterritorial jurisdiction. This manual establishes standard principles and practices, design guidance, and a framework for incorporating effective and environmentally sustainable stormwater management into the development and construction processes within the jurisdiction of the City and is intended to encourage a greater uniformity in developing plans for stormwater management systems. The design methodology, procedures, factors, formulae, and graphs described in the following pages are intended to serve as guidelines for the analysis of drainage matters for local government review and approval purposes; however, the responsibility for the adequacy and effectiveness of the actual design remains with the design engineer and sound engineering judgment must always be applied. Users of this manual should be knowledgeable and experienced in the theory and application of drainage engineering principles. Any deviation from the requirements of this manual must be approved by the Director of Public Works. 2.0 DEVELOPMENT PROCESS: 2.1 Predevelopment Conference Prior to beginning any design and concept layout for a development project within the City, the developer and his/her design engineer(s) are strongly advised to schedule, in advance, a Predevelopment Conference with the City Engineering Division. Appointments can be made by calling the City Engineer at (940) 761-7477. General information as to the project location, site size, intended use, and other relevant factors should be given when scheduling. The developer, developer's engineer and City Engineering staff can then meet and discuss specific drainage and infrastructure issues for the project site prior to beginning the design process. Available City electronic information such as topographic maps and existing hydrologic and hydraulic studies can be obtained. Additionally the meeting will serve to review the City's expectations for studies and plans to be prepared and submitted for City review and approval in keeping with this manual during the design and approval process. 2.2 Concept/Preliminary Study Once concept plans for a project are prepared, the design engineer shall provide to the City Engineering Division a written report that describes and documents the background, intent and methodology intended to be used along with preliminary plans and sufficient analyses to indicate that the requirements of the Stormwater Ordinance can be addressed. For a subdivision, this submission would be commonly referred to as a master drainage plan. This plan and study shall be prepared by a Professional Engineer licensed in the State of Texas with demonstrated knowledge of the study of drainage issues and proficiency with drainage analysis and modeling tools and should include, but is not limited to: • a preliminary plat and/or overall concept development plan for phased projects; • background topographic data for the site including off-site drainage area(s)(existing City topographic data may be used for this submission); • depiction of existing FEMA floodplain and floodway lines on the site and drainage area; • any proposed revisions to the FEMA floodplain; • initial hydrologic analyses to assess the stormwater impact of the proposed development; • approximate structure, pond,and conveyance sizes and proposed flow line grades; • indications that appropriate easements can be provided,dedicated or obtained;and • other information that will assist City staff in determining if the project can reasonably comply with the Stormwater Ordinance. 1 If the design engineer intends to claim that there will be no downstream impact from the development, then a complete downstream assessment as later described including all necessary documentation, analysis and background materials shall be provided for review and approval by the City at this stage. After appropriate review, the City Engineering Division will notify the design engineer of any comments, suggested revisions and its conditional consent to proceed with final plans. This does not constitute tacit approval of the project plans but simply indicates that the initial proposal appears to be conceptually viable. Department of Public Works approval of a preliminary plat is contingent upon this conditional consent. 2.3 Final Study/Construction Plans After conditional consent for a project is obtained, the design engineer shall provide to the City Engineering Division final construction plans and analyses that indicate and document the specific improvements that will fully address the requirements of the Stormwater Ordinance. This plan and study data shall be prepared by a Professional Engineer licensed in the State of Texas with demonstrated knowledge of the study of drainage issues and proficiency with drainage analysis and modeling tools and shall include, but are not limited to: • project specific on-site and off-site grading, drainage and/or detention plans with details of proposed improvements intended to provide compliance with the Stormwater Ordinance including the 100 year hydraulic grade line surfaces being specifically noted on the profile sheets; • surveyed topographic data for the site and pertinent off-site features and verified topographic data for related drainage area(s); • depiction of existing FEMA floodplain and floodway lines on the site and drainage area; • final hydrologic and hydraulic analyses and calculations to document the stormwater impact of the proposed development; • final downstream assessment as described in Section 3.2 hereof; • specific structures, pond, and conveyance sizes along with profiles and representative cross sections of drainage channels; • copies of required permits obtained including all application data as submitted to the approving agency; • specific identification of required phased improvements within the proposed development sequence; • signed easement documents with metes and bounds descriptions and/or a copy of the final plat with dedications noted;and • other information that will assist City staff in determining that the project complies with the Stormwater Ordinance. The City's approval of the final study and construction plans is a precondition of obtaining approvals from the Department of Public Works for final plats or for building permits. Approval will be evidenced by the signature of the City Engineer or his/her designee on the cover page of the plan set and by a separate letter detailing any other matters required to comply with the Ordinance, this Stormwater Manual, or for approval and acceptance of the drainage improvements. 2.4 Construction Review and Engineer Certification 2.4.1 Public Drainage Improvements The City Engineering Division shall provide on-going inspection of construction activities and all work related to drainage improvements that are being constructed for City acceptance and maintenance. The City inspector will keep a log of construction site visits and the project contractor will be required to maintain a red-lined set of project drawings indicating any variations noted between plans and actual construction. Upon completion of the drainage improvements, the design engineer shall, as deemed appropriate, field verify: flow line grades of structures and conveyances, measurements of structures, and actual volumes of storage facilities. The 2 engineer shall then produce an as-built set of project drawings using the red-lined plan set from the Contractor, notes kept by the City Inspector, appropriate verified grades and volumes, and other information known to the engineer. Two hard copy sets of the as-built drawings and an electronic file of the drawings in AutoCAD format shall be provided to the City. The as-built plans and any required maintenance bond shall be provided to the City in satisfactory format prior to the City's acceptance of the improvements. 2.4.2 Privately Maintained Drainage Improvements Upon completion of project site improvements that will be privately maintained, such as a commercial site detention pond,the design engineer shall field verify the as-built flow line grades of structures and conveyances; obtain actual measurements of structures, and verify actual volumes of storage facilities and shall provide a detention facilities agreement in form and substance as provided by the City, a copy of which is included in the Appendix to this Manual, which includes: • the notarized signature of the fee simple owner of the subject property; • an Exhibit"A"containing a reduced copy of the as-built plan of the drainage facility with a sealed and signed certification by the engineer as to the volume and release rate of the facilities;and • an Exhibit"B"containing the metes and bounds description of the area comprising the detention facility. The City Engineering Division's approval of the project for a certificate of occupancy will be contingent upon receipt and acceptance of the signed and sealed detention facilities agreement. 3.0 DESIGN CRITERIA: 3.1 Hydrology 3.1.1 Hydrologic Methods The following methods are approved to support hydrologic site analysis for the design methods and procedures included in this Manual: • Rational Method • Modified Rational Method • SCS Unit Hydrograph Method • Snyder's Unit Hydrograph Method Table 3.1 lists the hydrologic methods and the circumstances for their use in various analysis and design applications. Table 3.2 provides some limitations on the use of several methods. In general the Rational Method is recommended for small highly impervious drainage areas such as parking lots and roadways draining into inlets and gutters. 3 Table 3.1 Applications of the Recommended Hydrologic Methods Method Related Rational SCS Modified Snyder's Unit Section Method Method Rational Hydrograph Gutter Flow and Section 3s.1 ✓ Inlets Closed Conduits Section 3.3.2 ✓ ✓ ✓ Storage Facilities Section 3.3.3 ✓ ✓ ✓ Open Channels Section 3.3.4 ✓ ✓ ✓ Culverts Section 3.3.5 ✓ ✓ ✓ Bridges Section 3.3.6 ✓ ✓ Energy Dissipation Section 3.3.7 ✓ ✓ ✓ Table 3.2 Constraints on Using Recommended Hydrologic Methods Method Size Limitations' Comments Method can be used for estimating Rational 0 200 acres peak flows and the design of small site or subdivision storm sewer systems. Modified Rational 0—200 acres Method can be used for estimating runoff volumes for storage design. Method can be used for estimating Unit Hydrograph(SCS)2 0-2000 acres peak flows and hydrographs for all design applications. Method can be used for estimating Unit Hydrograph(Snyder's; 1 sq.mile and larger peak flows and hydrographs for all design applications. Size limitation refers to the drainage basin for the stormwater management facility(e.g.,culvert,inlet). 2 This refers to SCS methodology included in many readily available programs(such as HEC-HMS or HEC-1)that utilize this methodology. 3 This refers to the Snyder's methodology included in many readily available programs (such as HEC-HMS or HEC-1)that utilize this methodology. If local stream gage data are available, these data can be used to develop peak discharges and hydrographs. The user is referred to standard hydrology textbooks for statistical procedures that can be used to estimate design flood events from stream gage data. 4 Note: It must be realized that any hydrologic analysis is only an approximation. The relationship between the amount of precipitation on a drainage basin and the amount of runoff from the basin is complex and too little data are available on the factors influencing the rainfall-runoff relationship to expect exact solutions. 3.1.2 Rainfall Estimation Rainfall intensities for the City of Wichita Falls have historically been provided in that Intensity Duration Frequency Curve prepared by Forrest and Cotton Engineers in January 1965 which may be used for hydrologic analysis within the City. Values may also be calculated using the following formula: = b/(t,+d)e (3.1) where i is inches per hour and t, is the rainfall duration in minutes. The parameters b, d and e for storm frequencies of 2 year through 100 year events for Wichita County, Texas are shown in Table 3.3: Table 3.3 Parameters for Formula 3.1 —Wichita County, Texas Event e b d 2 yr. 0.803 51 9.4 5 yr. 0.784 62 8.7 10 yr. 0.795 76 8.7 25 yr. 0.792 88 8.7 50 yr. 0.797 104 8.7 100 yr. 0.792 114 9.4 3.1.3 RATIONAL METHOD 3.1.3.1 Introduction When using the Rational Method some precautions should be considered: • In determining the C value (runoff coefficient based on land use) for the drainage area, hydrologic analysis should take into account any future changes in land use that might occur during the service life of the proposed facility. • Since the Rational Method uses a composite C and a single t,value for the entire drainage area, if the distribution of land uses within the drainage basin will affect the results of hydrologic analysis (e.g., if the impervious areas are segregated from the pervious areas), then the basin should be divided into sub-drainage basins. • The formulae and tables included in this section are given to assist the engineer in applying the Rational Method. The engineer should use sound engineering judgment in applying these design aids and should make appropriate adjustments when specific site characteristics dictate adjustments are appropriate. • The Rational Method should not be used for calculating peak flows downstream of bridges, culverts, or storm sewers that may act as restrictions causing storage that impacts the peak rate of discharge. 5 3.1.3.2 Equations The Rational Formula is expressed as follows: Q=CIA (3.2) where: Q = maximum rate of runoff(cfs) C = runoff coefficient representing a ratio of runoff to rainfall per Table 3.6 = average rainfall intensity for a duration equal to the t,(in/hr) A = drainage area contributing to the design location(acres) 3.1.3.3 Time of Concentration Use of the Rational Formula requires the time of concentration(tc)for each design point within the drainage basin. The duration of rainfall is then set equal to the time of concentration and is used to estimate the design average rainfall intensity (I). The time of concentration consists of an overland flow time to the point where the runoff is concentrated or enters a defined drainage feature (e.g., open channel) plus the time of flow in a closed conduit or open channel to the design point. For each drainage area,the distance is determined from the inlet to the most remote point in the tributary area. From a topographic map,the average slope is determined for the same distance. In urban areas,the length of overland flow distance should realistically be no more than 50—100 feet. Table 3.5 gives recommended minimum and maximum times of concentration based on land use categories. The minimum time of concentration should be used for the most upstream inlet (minimum inlet time). Computed downstream travel times will be added to determine times of concentration through the system. For anticipated future upstream development, the time of concentration should be no greater than the maximum. Table 3.5 Times of Concentration Land Use Minimum Maximum (minutes) (minutes) Residential Development 15 30 Commercial and Industrial 10 25 Central Business District 10 15 3.1.3.4 Runoff Coefficient(C) Table 3.6 provides certain runoff coefficients for the Rational and Modified Rational Methods.The design engineer may also calculate and submit a site specific C value by using the actual site areas and percentages of different land uses within the site being considered rather than arbitrarily using the values from Table 3.6. Clear documentation of the C value determination shall be submitted for review and approval by the City Engineering staff. If it is important to locate a specific land use within the drainage area, then another hydrologic method should be used where hydrographs for each individual drainage area can be generated and routed through the drainage system. It may be that using only the impervious area from a highly impervious site (and the corresponding high C factor and shorter time of concentration) will yield a higher peak runoff value than by using the whole site. This should be checked particularly in areas where the overland portion is grassy(yielding a long tc)to avoid underestimating peak runoff. 6 Table 3.6 Runoff Coefficient Values Description of Area Runoff Coefficients (C) Lawns: Sandy soil,flat, <2% 0.10 Sandy soil,average,2-7% 0.15 Sandy soil,steep, >7% 0.20 Clay soil,flat,<2% 0.17 Clay soil,average,2-7% 0.22 Clay soil,steep, >7% 0.35 Agricultural(cultivated) 0.30 Mesquite Pasture 0.25 Streams, Lakes,Water Surfaces 1.00 Business/Commercial/Industrial: calculate Residential: Single Family(6 lots/ac) 0.55 Single Family(4 lots/ac) 0.50 Single Family(3 lots/ac) 0.45 Single Family(2 lots/ac) 0.40 Single Family(1+acre lots) calculate Multi-Family Projects calculate Parks, cemeteries 0.25 Playgrounds 0.35 Railroad yard areas 0.40 Streets: Asphalt and Concrete 0.95 Brick 0.85 Drives,walks,and roofs 0.95 Gravel areas 0.50 Graded or no plant cover Sandy soil,flat, 0-3% 0.20 Sandy soil,flat, >3% 0.25 Clayey soil,flat,0-3% 0.25 Clayey soil, average, >3% 0.35 7 3.1.4 MODIFIED RATIONAL METHOD 3.1.4.1 Introduction For drainage areas of less than 200 acres, a modification of the Rational Method can be used for the estimation of storage volumes for detention calculations. The Modified Rational Method is a procedure based on the Rational Method by which hydrographs are developed rather than only a peak flow. The hydrographs determined by the Modified Rational Method are based on the assumption that runoff begins and increases linearly to the peak volume of runoff. The time in which the peak is reached is the time of concentration (tc). The peak is maintained for the storm duration and then linearly decreases to zero. The duration (horizontal axis) for both the rising and falling limbs of the inflow hydrograph equals to and the peak flow of the hydrograph is maintained for the storm duration. A triangular hydrograph results when the storm duration(td)is equal to t,and represents the same peak flow as calculated by the Rational Method. When td is increased beyond ta, the hydrograph takes a trapezoidal shape as shown in Figure 3.1 below. As td is lengthened, the peak flow decreases, but the volume of runoff, the area under trapezoid, increases. An allowable release rate is set (Qa) based on pre-development conditions. The allowable release rate increases linearly until it reaches the receding limb of the inflow hydrograph. The td is varied incrementally until the storage volume(shaded area) is maximized. This method is normally an iterative process which can be done by hand or spreadsheet. Readily available software programs such as Bentley (Haestad) Pond Pack© Modified Rational Method "I" use this same methodology. Downstream analysis is not possible with this method as only approximate graphical routing takes place. Discharge Qa t, td Time Figure 3.1 Modified Rational Definitions 3.1.4.2 Design Equations The allowable release rate can be determined from: Qa=CaiA (3.3) where: Qa = allowable release rate(cfs) Ca = predevelopment Rational Method runoff coefficient i = rainfall intensity for the corresponding time of concentration(in/hr) A = area(acres) The Modified Rational Method should be used for basins with fairly homogeneous land use and flow paths. Consideration should also be given to increasing the C factor for higher intensity(>25 year)storms because infiltration and other abstraction losses have a proportionally smaller effect on runoff during such events. Care should be exercised in the calculation of the C factor and time of concentration used to determine the Qa to avoid oversizing the outlet device and thus reducing available storage. 8 3.1.5 SCS METHOD 3.1.5.1 Application The SCS method can be used for both the estimation of stormwater runoff peak rates and the generation of hydrographs for the routing of stormwater flows,thus it can be used for most design applications. It is assumed that most users of the SCS methodology will use a computer program such as HEC-HMS therefore this manual does not attempt to include the equations and concepts utilized as the methololgy is adequately described in the HEC-HMS User's Manual and Technical Reference Manual. 3.1.5.2 Runoff Factor(CN) The SCS method uses a combination of soil conditions and land uses(ground cover)to assign a runoff factor to each area. Soils data can be obtained from a site specific geotechnical report or from the County Soils Survey information available on-line at http:I/soils.usda.govl. Average antecedent soil moisture conditions (AMC II) are recommended for most hydrologic analysis. Table 3.8 gives standard curve number values for a range of land uses. When a drainage area has more than one land use,a composite curve number can be calculated based upon percentages of land uses within a basin Table 3.8 Runoff Curve Numbers' Cover Description Curve numbers for hydrologic soil groups Cover type and hydrologic condition Average percent A g C D impervious area Cultivated Land: Without conservation treatment 72 81 88 91 With conservation treatment 62 71 78 81 Pasture or range land: Poor condition 68 79 86 89 Good condition 39 61 74 80 Meadow: Good condition 30 58 71 78 Wood or forest land: Thin stand, poor cover 45 66 77 83 Good cover 25 55 70 77 Open space(lawns,parks,golf courses, cemeteries,etc.) Poor condition(grass cover<50%) 68 79 86 89 Fair condition(grass cover 50%to 75%) 49 69 79 84 Good condition(grass cover>75%) 39 61 74 80 Impervious areas: Paved;curbs and storm drains(excluding right- of-way) 98 98 98 98 Paved;open ditches(including right-of-way) 83 89 92 93 Gravel(including right-of-way) 76 85 89 91 Dirt(including right-of-way) 72 82 87 89 Urban districts: Commercial and business 85% 89 92 94 95 Industrial 72% 81 88 91 93 9 Table 3.8 Runoff Curve Numbers' Cover Description Curve numbers for hydrologic soil groups Cover type and hydrologic condition Average percent A B C D impervious area Residential districts by average lot size: 1/8 acre or less(town house) 65% 77 85 90 92 1/4 acre 38% 61 75 83 87 1/3 acre 30% 57 72 81 86 1/2 acre 25% 54 70 80 85 1 acre 20% 51 68 79 84 2 acres 12% 46 65 77 82 Developing urban areas and newly graded areas (previous areas only,no vegetation) 77 86 91 94 Average runoff condition,and la=0.2S 2 The average percent impervious area shown was used to develop the composite CNs. Other assumptions are as follows: impervious areas are directly connected to the drainage system,impervious areas have a CN of 98, and pervious areas are considered equivalent to open space in good hydrologic condition. If the impervious area is not connected,the SCS method has an adjustment to reduce the effect. 3 CNs shown are equivalent to those of pasture. Composite CNs may be computed for other combinations of open space cover type. 3.1.5.3 Urban Modification of the SCS Method Connected Impervious Areas The CNs for various land cover types were developed for typical land use relationships based on specific assumed percentages of impervious area. These CN values were developed on the assumptions that: 1. Pervious urban areas are equivalent to pasture in good hydrologic condition, and 2. Impervious areas have a CN of 98 and are directly connected to the drainage system. If all of the impervious area is directly connected to the drainage system, but the impervious area percentages or the pervious land use assumptions do not appear applicable, refer to the graphical chart provided by SCS to compute a composite CN. Unconnected Impervious Areas Runoff from these areas is spread over a pervious area as sheet flow. To determine CN when all or part of the impervious area is not directly connected to the drainage system, refer to the graphical charts provided by SCS to compute a composite CN. 3.1.5.4 Travel Time Estimation Travel time(Tr)is the time it takes water to travel from one location to another within a watershed, through the various components of the drainage system. Time of concentration (ta) is computed by summing all the travel times for consecutive components of the drainage conveyance system from the hydraulically most distant point of the watershed to the point of interest within the watershed. 10 Travel Time Water moves through a watershed as sheet flow, shallow concentrated flow, open channel flow, or some combination of these. The type of flow that occurs is a function of the conveyance system and is best determined by field inspection. Travel time is the ratio of flow length to flow velocity: Tt= L/3600V (3.4) where: Tt= travel time(hr) L= flow length(ft) V= average velocity(ft/s) 3600= conversion factor from seconds to hours Sheet Flow Sheet flow can be calculated using the following formula: Tt= 0.42(nL)°$ = 0.007(nL)°$ (3.5) 60(P2)°s(S)°.4 (P2)o. (S) .4 where: Tt= travel time(hr) n= Manning roughness coefficient L= flow length(ft), P2= 2-year, 24-hour rainfall S= land slope(ft/ft) Shallow Concentrated Flow After 50 to 100 feet,sheet flow usually becomes shallow concentrated flow. The average velocity for this type of flow can be graphically determined from information provided in the SCS manual or can be computed from the following equations. Unpaved V= 16.13(S)°'5 (3.6) Paved V=20.33(S)°.5 (3.7) where: V= average velocity(ft/s) S= slope of hydraulic grade line(watercourse slope,ft/ft) After determining average velocity, use Equation 3.4 to estimate travel time for the shallow concentrated flow segment. Open Channels • Open channels are assumed to begin where surveyed cross sections have been obtained, where visible on aerial photographs, where identified by the local municipality, or where stream designations appear on USGS quadrangle sheets. • Manning's Equation or water surface profile information can be used to estimate average flow velocity. • Average flow velocity for travel time calculations is usually determined for bank-full elevation assuming low vegetation winter conditions. Manning's Equation is: V=(1.49/n)(R)213(S)112 (3.8) where: V= average velocity(ft/s) R= hydraulic radius(ft)and is equal to A/P,v A= cross sectional flow area(ft2) PW= wetted perimeter(ft) S= slope of the hydraulic grade line(ft/ft) n= Manning's roughness coefficient for open channel flow 11 After average velocity is computed using Equation 3.8, It for the channel segment can be estimated using Equation 3.4. Limitations • Equations in this section should not be used for sheet flow longer than 50 feet for impervious surfaces. • In watersheds with storm sewers, carefully identify the appropriate hydraulic flow path to estimate tc. • A culvert or bridge can act as detention structure if there is significant storage behind it. Detailed storage routing procedures should be used to determine the outflow through the culvert or bridge. 3.1.5.5 Hydrologic Stream Routing The routing methods selected for use in Wichita Falls are the Modified Puls and the Muskingum- Cunge 8 point section methods. 3.1.6 SNYDER'S UNIT HYDROGRAPH METHOD The Snyder method estimates a peak discharge and a time to the peak of the unit hydrograph. It also estimates shape parameters. Rainfall runoff models, such as HEC-1, will typically complete the unit hydrograph based on assumed parameters and relationships. Typically, two parameters are needed to develop the Snyder Unit Hydrograph: • TL-lag time and • Cp -shape factor,also expressed as Cp640. The following equation to compute lag time should be used: TL=Cr(L LcA/50 5)0.38 (3.9) TL =Lag Time(hr) CT =coefficient L =hydraulic length of the watershed along the longest flow path(mi) LcA= hydraulic length along the longest watercourse from the point under consideration to a point opposite the centroid of the drainage basin(mi) S =weighted slope of the basin(ft/mi), measured from the 85%to the 10%points along the longest stream path in the basin. The value CT is a dimensionless parameter that is typically assumed to be consistent for various areas of the state. It can be estimated from neighboring areas or calibrated for the whole or portions of the basin,and then applied to multiple subbasins within the watershed. Note that there are multiple forms of the Snyder equation for TL. Some use ft/ft for the slope and some do not include the slope at all. If a regional CT value is used, verify that the same equation was used in the study within which it was developed. Values generally range from about 0.7 up to about 3.0 though values outside that range have been calibrated. The shape factor Cp reflects the sharpness of the hydrograph. High values, up to about 500, reflect a rapidly responding basin with a sharp peaked hydrograph. Low values, such as 250, generally reflect a flatter, slow responding basin with a longer, flatter hydrograph. These values are generally divided by 640 and entered into HEC-HMS as the Cp value ranging from about 0.4 to 0.8. 12 3.2 Downstream Assessment 3.2.1 Introduction The assessment should extend from the outfall of a proposed development to a point downstream where the discharge from a proposed development no longer has a significant impact on the receiving stream or storm drainage system. The assessment should be a part of the preliminary and final plans,and should include the following properties: • Hydrologic analysis of the pre-and post-development on-site conditions • Drainage path which defines extent of the analysis. • Capacity analysis of all existing constraint points along the drainage path, such as existing floodplain developments, underground storm drainage systems culverts, bridges, tributary confluences,or channels • Offsite undeveloped areas are considered as "full build-out" for both the pre- and post- development analyses • Evaluation of peak discharges and velocities for three(3)24-hour storm events • 2-year storm • 10-year storm;and • 100-year storm • Separate analysis for each major outfall from the proposed development Once the analysis is complete, the designer should ask the following three questions at each determined junction downstream: • Are the post-development discharges greater than the pre-development discharges? • Are the post-development velocities greater than the pre-development velocities? • Are the post-development velocities greater than the velocities allowed for the receiving system? These questions should be answered for each of the three storm events. The answers to these questions will determine the necessity, type, and size of non-structural and structural controls to be placed on-site or downstream of the proposed development. 3.2.2 Downstream Hydrologic Assessment Common practice requires the designer to control peak flow at the outlet of a site such that post- development peak discharge is equal to or less than pre-development peak discharge. It has been shown that in certain cases this does not always provide effective water quantity control downstream from the site and may actually exacerbate flooding problems downstream. The reasons for this have to do with (1) the timing of the flow peaks, and (2) the total increase in volume of runoff. Due to a site's location within a watershed, there may be very little reason for requiring flood control from a particular site. In certain circumstances where detention is in place or a master drainage plan has been adopted, a development may receive or plan to receive less that ultimate developed flow conditions from upstream. This might be considered in the detention needed and its influence on the downstream assessment. Any consideration in such an event would be with the prior approval of the City Public Works Director. This section outlines a suggested procedure for determining the impacts of post-development stormwater peak flows and volumes that are required as part of a developer's stormwater management site plan. 3.2.3 Methods for Downstream Evaluation The downstream assessment is a tool by which the impacts of development on stormwater peak flows and velocities are evaluated downstream. The assessment should consider the zone of influence of the proposed development and shall extend from the outfall of the development to a point downstream where the discharge no longer has a significant impact upon the receiving stream or storm drainage system 13 Typical steps in a downstream assessment include: 1. Determine the outfall location of the site and the pre- and post-development site conditions. 2. Collect data for the stormwater facilities within the zone of influence, such as reviewing other studies and obtaining as-built plans. Based on this information, document whether or not the downstream facilities were designed for build out conditions for all property upstream and whether there are any know problems downstream such as road overtoppings, historical structure flooding, etc. If there are no such downstream problems and if the downstream systems are documented as being designed for build out conditions upstream, then this information shall be presented for the approval and consent of the City Public Works Director. If these criteria are not satisfied, then the assessment must continue. 3. Using a topographic map determine a preliminary lower limit of the zone of influence (approximately 10%point). 4. Using a hydrologic model determine the pre-development peak flows and velocities at each junction beginning at the development outran and ending at the next junction beyond the"10%zone of influence" point. The 10%zone of influence can be considered to be the point where the drainage area controlled by the detention or storage facility comprises 10%of the total drainage area. For example, if a structural control drains 10 acres, the zone of influence ends at the point where the total drainage area is 100 acres or greater. Undeveloped off-site areas are modeled as "full build-out" for both the pre- and post-development analyses. The discharges and velocities are evaluated for the three design storms. 5. Change the land use on the site to post-development conditions and rerun the model. 6. Compare the pre- and post-development peak discharges and velocities at the downstream end of the model. If the post-developed flows are higher than the pre- developed flows for the same frequency event, or the post-developed velocities are higher than the allowable velocity of the downstream receiving system, extend the model downstream. Repeat steps 3 and 4 until the post-development flows are less than the pre-developed flows, and the post-developed velocities are below the allowable velocity. Allowable velocities are given in Table 3.12 in Section 3.3.4, Open Channels. 7. If shown that no peak flow increases occur downstream, and post-developed velocities are allowable, then the control of the flood protection volume can be waived by the City Director of Public Works. 8. If peak discharges are increased due to development, or if downstream velocities are erosive, one of the following options are required. • Provide an acceptable design to reduce the flow elevation and/or velocity through channel or flow conveyance structure improvements downstream;or • Design an on-site structural control facility such that the post-development flows do not increase the peak flows, and the velocities are not erosive, at the outlet and the determined junction locations. 14 3.3 HYDRAULICS 3.3.1 Streets Gutter Flow The City has chosen to calculate gutter depth using a straight crown cross section. Design guidance on gutter flow hydraulics may be obtained from the Federal Highway Administration's Urban Drainage Design Manual, HEC-22. Formula The following form of Manning's Equation should be used to evaluate gutter flow hydraulics: Q= [0.56/n]Sx513 S112 T813 (3.10) where: Q = gutter flow rate, cfs Sx = pavement cross slope,ft/ft n = Manning's roughness coefficient S = longitudinal slope,ft/ft T = width of flow or spread,ft Manning's n Table Table 3.9 Manning's n Values for Street and Pavement Gutters Type of Gutter or Pavement Manninp's n Concrete gutter,troweled finish 0.014 Concrete gutter with Smooth adjoining pavement 0.015 Rough(broom finish)adjoining pavement 0.018 For gutters with small slopes,where sediment may accumulate, increase above values of n by 0.002 Stormwater Inlets Inlets used for the drainage of pavement surfaces can be divided into three major classes: • Grate Inlets—These inlets include grate inlets consisting of an opening in the gutter covered by one or more grates, and slotted inlets consisting of a pipe cut along the longitudinal axis with a grate or spacer bars to form slot openings. • Curb-Opening Inlets—These inlets are vertical openings in the curb covered by a top slab. • Combination Inlets —These inlets usually consist of both a curb-opening inlet and a grate inlet placed in a side-by-side configuration, but the curb opening may be located in part upstream of the grate. The City of Wichita Falls requires the use of curb type inlets. However, grate inlets may be allowed in certain design situations with the prior approval of the City Public Works Director. The City of Wichita Falls requires that any design using grate inlets must reduce that calculated capacity of the grate by 50%due to the probability of debris clogging the inlet. Inlets may be classified as being on a continuous grade or in a sump. Overflow provisions shall be provided in sump locations to handle excess stormwater flows that may exceed curb height in 15 the event of a storm exceeding the design conditions or if the inlet were to clog. These overflow provisions shall not adversely affect adjoining private property. Design guidance for all inlet types of inlet hydraulics may be obtained from the Federal Highway Administration's Urban Drainage Design Manual, HEC-22, and from AASHTO's Model Drainage Manual. 3.3.2 Storm Sewer(Closed Conduit)Systems Closed conduit systems may be composed of different lengths and sizes of conduits (system segments) connected by appointment structures (system nodes). Segments are most often circular pipe, but can be a box or other enclosed conduit. The following requirements shall be applied to the design of storm sewers: • The minimum acceptable pipe size is 18" inside diameter • Manholes or junction boxes shall be provided at all changes in horizontal direction or slope, changes in pipe diameters, or pipe intersections with a maximum spacing on long pipe runs of 1000 feet. • Preformed wyes may be used only for single leads from an inlet to the main line. • Approved piping materials for conduits are: (1) Reinforced Concrete Pipe ("RCP")with pipe class determined by depth of cover and loading conditions installed per City Details, (2) High Density Polyethylene("HOPE")with a smooth interior may be used only when a minimum of 24" of cover from finish grade to the top of pipe is provided and the pipe shall be properly embedded in strict accordance with manufacturers' specifications with graded gravel. Any HDPE used within five feet(5')of a street pavement edge or under street sections shall be encased with flowable fill on all sides per City details. (3) Poly Vinyl Chloride ("PVC") pipe with a smooth interior surface is allowable. Pipe stiffness shall be a minimum of 46 with actual pipe class determined by depth of cover calculations with pipe not to exceed 5%deflection. Capacity Calculations A closed conduit may be under pressure or at other times the conduit may flow partially full; however, the usual design assumption is that the conduit is flowing full but not under pressure. Under this assumption the rate of head loss is the same as the slope of the pipe(SFS), in ft/ft. The hydraulic capacity of storm drain pipes for gravity and pressure flows shall be determined by the following equation: V=(1.486/n)R213 S112 (3.11) where: V = mean velocity of flow,ft/s R = the hydraulic radius, ft - defined as the area of flow divided by the wetted flow surface or wetted perimeter(ANVP) S = the slope of hydraulic grade line,ft/ft n = Manning's roughness coefficient 16 In terms of discharge,the above formula becomes: Q=(1.486/n)A Rya S72 (3.12) where: Q = rate of flow,cfs A = cross sectional area of flow,ft2 For pipes flowing full,the area is(rr/4)D2 and the hydraulic radius is D/4,so,the above equations become: V=[0.590 D213S112]/n (3.13) Q= [0.463 D813S12]/n (3.14) where: D = diameter of pipe,ft S = slope of the pipe=Sf hydraulic grade line,ft/ft The Manning's Equation can be written to determine friction losses for storm drain pipes as: Hf=[0.453 n2V2L]/[R413] (3.15) Hf=[(2.87 n2V2L]/[D413] (3.16) Hf=[(185n2(V2/2g)L]/[D413] (3.17) where: Hf = total head loss due to friction,ft(Sf x L) n = Manning's roughness coefficient D = diameter of pipe,ft L = length of pipe,ft V = mean velocity,ft/s R = hydraulic radius,ft g = acceleration of gravity=32.2 ft/sec2 Table 3.10 Manning's Coefficients for Storm Drain Conduits (HEC 22,2001) Roughness or Type of Culvert Corrugation Manning's n Concrete Pipe Smooth 0.013 Concrete Boxes Smooth 0.013 HDPE Smooth 0.010 Polyvinyl chloride(PVC) Smooth 0.010 *NOTE: The Manning's n values indicated in this table were obtained in the laboratory and are supported by the provided reference.These numbers should be considered as the best possible for the pipe type. Actual field values for culverts may vary depending on the effect of abrasion, corrosion,deflection,and joint conditions. Minimum Grades and Desirable Velocities The minimum allowable velocity for closed conduits flowing full is 2.0 fps. The minimum slopes are therefore calculated by the modified Manning's formula: S=[(nV)2]/[2.208R413] (3.18) where: S = the slope of the hydraulic grade line,ft/ft n = Manning's roughness coefficient V = mean velocity of flow,ft/s R = hydraulic radius,ft(area divided by wetted perimeter) 17 For circular conduits flowing full but not under pressure, R=D/4, and the hydraulic grade line is equal to the slope of the pipe. For these conditions Equation 3.20 may be expressed as: S=2.87(nV)2/D413 (3.19) For a minimum velocity of 2.0 fps,the minimum slope equation becomes: S= 11.48(n2/D413) (3.20) where: D = diameter,ft Maximum Velocities Maximum velocities in storm drains should not exceed 15 fps. However, the outfall velocity shall not exceed the velocity of the receiving channel for the same storm event. Hydraulic Grade Line All drainage plans prepared for review by the City shall include hydraulic grade lines indicated on the profile views for the system. The energy grade line(EGL)represents the total energy along a channel or conduit carrying water. Total energy includes elevation head, velocity head and pressure head. The 10-year storm hydraulic grade line for a closed conduit system shall be contained within the closed conduit system. E=V2/2g+ +z (3.21) where: E = Total energy,ft V2/2g = Velocity head,ft(kinetic energy) p = Pressure, lbs/ft2 = Unit weight of water,62.4 lbs/ft3 p/b = Pressure head,ft(potential energy) z = Elevation head,ft(potential energy) Bernoulli's Law expressed between points one(1)and two(2)in a closed conduit accounts for all energy forms and energy losses. The general form of the law may be written as: V12/2g+pii +z1=V22/2g+p2r6+z2-Hr-ZHm (3.22) where: H1 = Pipe friction loss, ft ZHm = Sum of minor or form losses,ft An in-depth presentation of the EGL and HGL calculations for a closed conduit system is provided in the Federal Highway Administration's Urban Drainage Design Manual, HEC-22 to which reference is herein made. Storm Drain Outfalls All storm drains have an outlet where flow from the storm drainage system is discharged. The discharge point can be a natural river or stream, an existing storm drainage system, or a channel which is either existing or proposed for the purpose of conveying the stormwater. The procedure for calculating the hydraulic grade line through a storm drainage system begins at the outfall. Therefore,consideration of outfall conditions is an important part of storm drain design. Storm drain outfalls shall include a headwall structure and a minimum 10 foot-long concrete apron with turned down footing at a transition into an earthen channel. However, the maximum velocity exiting the outfall cannot exceed the allowable velocity for the receiving channel. Refer to Table 3.12 for allowable velocities. 18 Several aspects of outfall design must be given serious consideration. These include the flowline or invert (inside bottom) elevation of the proposed storm drain outlet, tailwater elevations, the need for energy dissipation, and the orientation of the outlet structure. The flowline or invert elevation of the proposed outlet should be equal to or higher than the flowline of the outfall. If this is not the case, there may be a need to pump or otherwise lift the water to the elevation of the outfall. Energy dissipation may be required to protect the storm drain outlet. A minimum 10 foot-long concrete apron shall be installed at the storm drain outlet into another conveyance. The outfall velocity shall not exceed that of the receiving stream or the maximum velocities provided in Table 3.12. Protection may be required at the outlet to prevent erosion of the outfall bed and banks. Riprap aprons or energy dissipators should be provided if high velocities are expected. The orientation of the outfall is another important design consideration Where practical, the outlet of the storm drain should be positioned in the outfall channel so that it is pointed in a downstream direction. This will reduce turbulence and the potential for excessive erosion. If the outfall structure cannot be oriented in a downstream direction,the potential for outlet scour must be considered. For example,where a storm drain outfall discharges perpendicular to the direction of flow of the receiving channel, care must be taken to avoid erosion on the opposite channel bank. If erosion potential exists, a channel bank lining of riprap or other suitable material should be installed on the bank. Alternatively, an energy dissipator structure could be used at the storm drain outlet. The tailwater depth or elevation in the storm drain outfall must be considered carefully. Evaluation of the hydraulic grade line for a storm drainage system begins at the system outfall with the tailwater elevation.The starting point for the hydraulic grade line determination should be either the design tailwater elevation or the average of critical depth and the height of the storm drain conduit, (d.+D)/2,whichever is greater. Coincidental Occurrence If the outfall channel is a river or stream, it may be necessary to consider the joint or coincidental probability of two hydrologic events occurring at the same time to adequately determine the elevation of the tailwater in the receiving stream.The relative independence of the discharge from the storm drainage system can be qualitatively evaluated by a comparison of the drainage area of the receiving stream to the area of the storm drainage system. For example, if the storm drainage system has a drainage area much smaller than that of the receiving stream, the peak discharge from the storm drainage system may be out of phase with the peak discharge from the receiving watershed. Table 3.11 provides a comparison of discharge frequencies for coincidental occurrence for the 2-, 5-, 10-, 25-, 50-, and 100-year design storms. This table can be used to establish an appropriate design tailwater elevation for a storm drainage system based on the expected coincident storm frequency on the outfall channel. For example, if the receiving stream has a drainage area of 200 acres and the storm drainage system has a drainage area of 2 acres, the ratio of receiving area to storm drainage area is 100 to 1. From Table 3.11 and considering a 10-year design storm occurring over both areas,the flow rate in the main stream will be equal to that of a five year storm when the drainage system flow rate reaches its 10-year peak flow at the outfall. Conversely,when the flow rate in the main channel reaches its 10-year peak flow rate,the flow rate from the storm drainage system will have fallen to the 5-year peak flow rate discharge. This is because the drainage areas are different sizes, and the time to peak for each drainage area is different. 19 Table 3.11 Frequencies for Coincidental Occurrences (TxDOT,2002) Area ratio* 2-vear design 5-vear design Main Stream Tributary Main Stream Tributary 10,000:1 1 2 1 5 2 1 5 1 1,000:1 1 2 2 5 2 1 5 2 100:1 2 2 2 5 2 2 5 5 10:1 2 2 5 5 2 2 5 5 1:1 2 2 5 5 2 2 5 5 Area ratio* 10-vear design 25-vear design Main Stream Tributary Main Stream Tributary 10,000:1 1 10 2 25 10 1 25 2 1,000:1 2 10 5 25 10 2 25 5 100:1 5 10 10 25 10 5 25 10 10:1 10 10 10 25 10 10 25 10 1:1 10 10 25 25 10 10 25 25 Area ratio* 50-vear design 100-vear design Main Stream Tributary Main Stream Tributary 10,000:1 2 50 2 100 50 2 100 2 1,000:1 5 50 10 100 50 5 100 10 100:1 10 50 25 100 50 10 100 25 10:1 25 50 50 100 50 25 100 50 1:1 50 50 100 100 50 50 100 100 *The Area ratio is the ratio of the overall drainage area of the receiving stream to the drainage area of the facility being evaluated. There may be instances in which an excessive tailwater causes flow to back up the storm drainage system and out of inlets and manholes, creating unexpected and perhaps hazardous flooding conditions.The potential for this should be considered. Flap gates placed at the outlet can sometimes alleviate this condition;otherwise, it may be necessary to isolate the storm drain from the outfall by use of a pump station. 20 3.3.3 Storage Design General Storage Concepts Storage of stormwater runoff within a stormwater management system is essential to providing the extended detention of flows for water quality protection and downstream streambank protection, as well as for peak flow attenuation of larger flows for flood protection. Runoff storage can be provided within an on-site system through the use of structural stormwater controls and/or nonstructural features and landscaped areas. Figure 3.2 illustrates various storage facilities that can be considered for a development site. Figure 3.2 Examples of Typical Stormwater Storage Facilities Flood Level Dry Basin Flood Level Permanent Pool Stormwater Pond or Wetland Rooftop Storage ❑❑❑ ❑ Parking Lot Storage Landscaped DODO I:El❑ AreaDODO Opo Underground Vault Underground Pipe Storage General Design Criteria • Outlet rates and design storms are defined in the City's Stormwater Ordinance; • HEC-HMS shall be used for large project designs(ponds with a drainage area of 200 acres or more); • A primary outlet device and corresponding storage volumes must be designed for discharge of 2, 10 and 100 year storms; • Stage-storage curve or table for the proposed storage facility shall be provided for all detention designs; • Stage-discharge curve or table for all outlet control structures shall be provided for all detention designs; • Ponds may not be located in existing drainage ways; • A secondary outlet device(emergency spillway)shall be provided at all facilities and designed to pass the 100-year storm. A minimum of 6"of freeboard is required at all earthen dams or where erosion may occur from overtopping. • Maximum design WSEL shall be at leastl2"below the finish floor elevations of nearby structures; • All storage facilities must be able to drain by gravity; • Earthen ponds shall have a minimum 0.5%slope across the flow line of the pond bottom and have minimum side slopes of 4:1 or flatter; 21 • Permanent vegetation shall be established in all earthen ponds. In those ponds to be accepted for City maintenance,the vegetation shall be a drought tolerant blend containing bermudagrass which is actively growing;covering the pond floor and side slopes with a 15 foot-wide belt around the top of berm;and having no bare spots greater that one square foot in size; • Retention ponds shall have a minimum, normal conservation pool depth of two feet unless the pond is intended to be stocked in which case at least 25%of the conservation pool depth shall be five feet deep or more. Measures shall be provided to insure that aerobic pond conditions are maintained. Only that volume existing above the normal conservation pool elevation shall be considered as storage. Discharge/outlet devices shall be designed as with a detention pond; • The maximum depth of ponding in parking areas shall be 18"; however,the developer must clearly indentify the area of potential ponding over 12"deep with signage and assumes all liability for vehicle damage; • Underground systems must have be designed with adequate manway access for cleaning and must be able to drain by gravity; • Rooftop system designs must also include the signed and sealed certification by a currently licensed Texas professional engineer that the entire structure(primary and secondary framing)has been properly designed to accommodate the additional stormwater loadings and that the building envelope has been designed to properly protect the interior from water intrusion as a result of the rooftop detention. General Storage Design Procedures The design procedures for all structural control storage facilities are the same whether or not they include a permanent pool of water. In the latter case, the permanent pool or spillway elevation is taken as the "bottom" of storage and is treated as if it were a solid basin bottom for routing purposes. It should be noted that the location of structural stormwater controls is very important as it relates to the effectiveness of these facilities to control downstream impacts. In addition, multiple storage facilities located in the same drainage basin will affect the timing of the runoff through the conveyance system, which could decrease or increase flood peaks in different downstream locations. Refer to Section 3.2 for the requirements of a Downstream Assessment. 3.3.4 Open Channels Open Channel Types The three main classifications of open channel types according to channel linings are vegetated, flexible, and rigid. Vegetated linings include grass with mulch, sod and lapped sod, and wetland channels. Stone riprap and some forms of flexible man-made linings or gabions are examples of flexible linings,while rigid linings are generally concrete or rigid block. Vegetative Linings — Vegetation, where practical, is the most desirable lining for an artificial channel. It stabilizes the channel body, consolidates the soil mass of the bed, checks erosion on the channel surface, provides habitat,and provides water quality benefits. Conditions under which vegetative cover only may not be acceptable include but are not limited to: • High velocities • Standing or continuously flowing water • Lack of regular maintenance necessary to prevent growth of taller or woody vegetation • Lack of nutrients and inadequate topsoil • Excessive shade Proper soil preparation, seeding, mulching, watering and any other work necessary to the establishment of healthy vegetation shall be provided. Channels shall not be accepted for City 22 maintenance until vegetation is fully established on a minimum of 90%of the channel bottom and side slopes. Pilot Channels - Man-made earthen channels with longitudinal slopes of less than 0.5% or that serve an area where consistent low flows are or may become prevalent shall be provided with a pilot channel per City Engineering standards. Flexible Linings—Rock riprap, including rubble and gabion baskets, is the most common type of flexible lining for channels. It presents a rough surface that can dissipate energy and mitigate increases in erosive velocity. These linings are usually less expensive than rigid linings and have self-healing qualities that reduce maintenance. However, they may require the use of a filter fabric depending on the underlying soils, and the growth of grass, weeds, and trees may present maintenance problems. Rigid Linings — Rigid linings are generally constructed of concrete and used where high flow capacity is required. Higher velocities, however, create the potential for scour at channel lining transitions and channel headcutting. Manning's n Values The choice of Manning's n value can significantly affect discharge, depth, and velocity estimates. Since Manning's n values depend on many different physical characteristics of natural and man- made channels, care and good engineering judgment must be exercised in the selection process. Recommended Manning's n values for man-made channels with unlined, rigid, gabion and riprap linings are given in the following Table 3.12. For natural channels, Manning's n values should be estimated using experienced judgment and information presented in publications such as the Guide for Selecting Manning's Roughness Coefficients for Natural Channels and Flood Plains, FHWA-TS-84-204, 1984, FHWA HEC-15, 1988, or Chow, 1959. Table 3.12 Manning's Roughness Coefficients for Design of Open Channels Lining Type Manninq's Comments Max.Velocity Grass Lined 0.035 6 Concrete 15 0.015 Lined Gabions 0.030 10 Rock Riprap 0.040 n=0.0395d50116 where d50 is the stone size of 10 which 50%of the sample is smaller Grouted 0.028 FWHARipra 10 Uniform Flow Calculations Design Aids This manual does not attempt to provide an exhaustive review of open channel design. Following is a discussion of the equations that can be used for the design and analysis of open channel flow. The Federal Highway Administration Hydraulic Design Standard manuals have numerous design charts or nomographs to aid in the design of rectangular, trapezoidal, and triangular open channel cross sections. In addition,design charts for grass-lined channels have been developed. Numerous software programs are available for calculating open channel flows. All submissions of design data to the City must clearly define which programs were used for analysis. Manning's Equation Manning's Equation, presented in three forms below, is recommended for evaluating uniform flow conditions in open channels. Most packaged drainage software utilizes these basic formulae: 23 v=(1.49/n)R2"3 S"2 (3.23) Q=(1.49/n)A R2J3 S"2 (3.24) S=[Qo/(1.49 A R2/3)]2 (3.25) where: v = average channel velocity(ft/s) Q = discharge rate for design conditions(cfs) n = Manning's roughness coefficient A = cross-sectional area(ft2) R = hydraulic radius A/P(ft) P = wetted perimeter(ft) S = slope of the energy grade line(ft/ft) For prismatic channels, in the absence of backwater conditions, the slope of the energy grade line,water surface and channel bottom are assumed to be equal. 3.3.5 Culvert Design Overview A culvert is a short, closed (covered) conduit that conveys stormwater runoff under an embankment or away from the street right-of-way. The primary purpose of a culvert is to convey surface water, but properly designed it may also be used to restrict flow and reduce downstream peak flows. The hydraulic and structural designs of a culvert must be such that minimal risks to traffic, property damage, and failure from floods prove the results of good engineering practice and economics. For economy and hydraulic efficiency, engineers should design culverts to operate with the inlet submerged during flood flows, if conditions permit. Design considerations include site and roadway data, design parameters(including shape, material, and orientation), hydrology (flood magnitude versus frequency relation), and channel analysis (stage versus discharge relation). Design Criteria The design of a culvert should take into account many different engineering and technical aspects at the culvert site and adjacent areas. The following list of design recommendations should be considered for all culvert designs as applicable. • Storm Frequency o Refer to the Stormwater Ordinance. Culverts must pass a minimum of a 10 year event but are also subject to depth of water restrictions over the roadway. • Velocity Limitations o Culverts are limited to velocities of 15 fps;however,the maximum allowable velocity of the downstream conveyance shall not be exceeded. • Debris Control o In designing debris control structures, it is recommended that the Hydraulic Engineering Circular No.9 entitled Debris Control Structures be consulted. • Headwater Limitations o Governed by depth over roadway limitation of the Stormwater Ordinance. 24 • Tailwater Considerations o Flows must be kept in dedicated easements and at least 12"below downstream structures. • Culvert Inlets o Hydraulic efficiency and cost can be significantly affected by inlet conditions. The inlet coefficient Ke, is a measure of the hydraulic efficiency of the inlet, with lower values indicating greater efficiency. Recommended inlet coefficients are given in Table 3.14. • Inlets with Headwalls o Headwalls may be used for a variety of reasons, including increasing the efficiency of the inlet, providing embankment stability, providing embankment protection against erosion, providing protection from buoyancy, and shortening the length of the required structure. Headwalls are required for all culverts and where buoyancy protection is necessary. If high headwater depths are to be encountered, or the approach velocity in the channel will cause scour, a short channel apron should be provided at the toe of the headwall. o This apron should extend at least one pipe diameter upstream from the entrance, and the top of the apron should not protrude above the normal streambed elevation. • Wingwalls and Aprons o Wingwalls are used where the side slopes of the channel adjacent to the entrance are unstable or where the culvert is skewed to the normal channel flow. • Improved Inlets o Where inlet conditions control the amount of flow that can pass through the culvert, improved inlets can greatly increase the hydraulic performance of the culvert. • Material Selection o Reinforced concrete pipe (RCP), pre-cast and cast in place concrete boxes are recommended for use (1) under a roadway, (2) when pipe slopes are less than 1%, or (3) for all flowing streams. High-density polyethylene (HDPE) pipe may also be used if encased in flowable fill as specified by City details. Table 3.13 gives recommended Manning's n values for different materials. • Culvert Skews o Culvert skews shall not exceed 45 degrees as measured from a line perpendicular to the roadway centerline without approval. • Weep Holes o Weep holes are sometimes used to relieve uplift pressure on headwalls and concrete rip-rap. Filter materials should be used in conjunction with the weep holes in order to intercept the flow and prevent the formation of piping channels through the fill embankment. The filter materials should be designed as an underdrain filter so as not to become clogged and so that piping cannot occur through the pervious material and the weep hole. • Outlet Protection o Culvert discharges shall be treated as a storm drain outfall. • Environmental Considerations o Where compatible with good hydraulic engineering, a site should be selected that will permit the culvert to be constructed to cause the least impact on the stream or wetlands. This selection must consider the entire site, including any necessary lead channels. 25 • Safety Considerations o Roadside safety should be considered for culverts crossing under roadways. Guardrails or safety end treatments may be needed to enhance safety at culvert crossings. The AASHTO roadside design guide should be consulted for culvert designs under and adjacent to roadways. Table 3.13 Manning's n Values Type of Conduit Wall&Joint Description Manning's n Concrete Pipe Good joints,smooth walls 0.012 Good joints,rough walls 0.016 Poor joints,rough walls 0.017 Concrete Box Good joints,smooth finished walls 0.012 Poor joints,rough,unfinished walls 0.018 High Density Smooth Liner 0.011 Polyethylene(HDPE) Corrugated 0.020 Polyvinyl Chloride(PVC) 0.011 Source: HDS No.5,2001 Note: For further information concerning Manning n values for selected conduits consult Hydraulic Design of Highway Culverts,Federal Highway Administration,2001,HDS No.5,pages 201-208. Table 3.14 Inlet Coefficients Type of Structure and Design of Entrance Coefficient Ke Pipe,Concrete Projecting from fill,socket end(grove-end) 0.2 Projecting from fill,square cut end 0.5 Headwall or headwall and wingwalls Socket end of pipe(groove-end) 0.2 Square-edge 0.5 Rounded[radius=1112(D)] 0.2 Mitered to conform to fill slope 0.7 *End-Section conforming to fill slope 0.5 Beveled edges,33.7°or 45°bevels 0.2 Side-or slope-tapered inlet 0.2 26 Table 3.14 Inlet Coefficients Type of Structure and Design of Entrance Coefficient Ke Box,Reinforced Concrete Headwall parallel to embankment(no wingwalls) Square-edged on 3 edges 0.5 Rounded on 3 edges to radius of[1/12(D)]or[1/12(B)]or beveled edges on 3 sides 0.2 Wingwalls at 30°to 75°to barrel Square-edged at crown 0.4 Crown edge rounded to radius of[1/12(D)]or beveled top edge 0.2 Wingwalls at 10°or 25°to barrel Square-edged at crown 0.5 Wingwalls parallel(extension of sides) Square-edged at crown 0.7 Side-or slope-tapered inlet 0.2 Although laboratory tests have not been completed on KQ values for High-Density Polyethylene(HDPE)pipes,the Ke values for corrugated metal pipes are recommended for HDPE pipes. * Note: "End Section conforming to fill slope",made of either metal or concrete, are the sections commonly available from manufacturers. From limited hydraulic tests they are equivalent in operation to a headwall in both inlet and outlet control. Some end sections incorporating a closed taper in their design have a superior hydraulic performance. These latter sections can be designed using the information given for the beveled inlet. Source: HDS No.5,2001 Comprehensive Design Guidance Comprehensive design discussions and guidance may be found in the Federal Highway Administration, National Design Series No. 5, document entitled Hydraulic Design of Highway Culverts, Second Edition, published in 2001. This document is available from the National Technical Information Service (http://www.ntis.gov/search/index.aspx) as Item Number PB20 031 0 2 41 1. Search for this document using the Item Number. 3.3.6 Bridge Design The following subsections present considerations related to the hydraulics of bridges. It is generally excerpted from Chapter 9 of the Texas Department of Transportation (TxDOT) Hydraulics Design Manual dated March 2009. Design Recommendations The design of a bridge should take into account many different engineering and technical aspects at the bridge site and adjacent areas. Bridges shall be designed to pass a 100-year event with 12" of freeboard between the calculated 100-year water surface elevation and the lowest structural member. Loss Coefficients The contraction and expansion of water through the bridge opening creates hydraulic losses. These losses are accounted for through the use of loss coefficients. Table 3.15 gives recommended values for the Contraction(Kc)and Expansion(Ke)Coefficients. 27 Table 3.15 Recommended Loss Coefficients for Bridges Transition Type Contraction(Kc) Expansion(KJ No losses computed 0.0 0.0 Gradual transition 0.1 0.3 Typical bridge 0.3 0.5 Severe transition 0.6 0.8 3.3.7 ENERGY DISSIPATION General Criteria Erosion problems at culvert, pipe and engineered channel outlets are common. Determination of the flow conditions, scour potential, and channel erosion resistance shall be standard procedure for all designs. Energy dissipators shall be employed whenever the velocity of flows leaving a stormwater management facility exceeds the erosion velocity of the downstream area channel system. Energy dissipator designs will vary based on discharge specifics and tailwater conditions. Outlet structures should provide uniform redistribution or spreading of the flow without excessive separation and turbulence. Recommended Energy Dissipators For many designs, the following outlet protection devices and energy dissipators provide sufficient protection at a reasonable cost • Riprap apron • Riprap outlet basins • Baffled outlets • Grade Control Structures Refer to the Federal Highway Administration Hydraulic Engineering Circular No. 14, Hydraulic Design of Energy Dissipators for Culverts and Channels,for the design procedures of energy dissipators. 28 APPENDIX DETENTION FACILITY AGREEMENT STATE OF TEXAS § COUNTY OF WICHITA § KNOW ALL MEN BY THESE PRESENTS This agreement made this the day of ,20 ,by and between the City of Wichita Falls, Texas, hereinafter "City", acting by and through its City Manager, and <<Owner>>, hereinafter "Owner". The term "Owner" shall include the above named owner,its successors and assigns. WITNESSETH: WHEREAS, Owner is the owner of certain real property located in the corporate limits of the City, more fully described as <<Legal Description and incorporated herein by reference(the"Owner Tract");also known as<<Street Address>>and, WHEREAS, the Owner and the City desire that the development of the Owner Tract be in accordance with applicable storm water runoff regulations of the City, designed to promote the health,safety and general welfare of the citizens of the City; NOW, THEREFORE, in consideration of the covenants contained herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged,the City and Owner hereby agree as follows: ARTICLE ONE In consideration of the City plat and site approval of the Owner Tract, Owner hereby agrees to construct, maintain and repair a certain Detention Facility to be constructed on a portion of the Owner Tract, identified in Exhibits "A & B", attached hereto and made a part hereof for all purposes(the"Detention Facility"). ARTICLE TWO Owner shall construct, maintain and repair the Detention Facility in a condition sufficient to provide storm water detention in accordance with the regulations of the City in effect on the date of this agreement. The Detention Facility and site grading shall be completed in accordance with Site and Grading Plans submitted by Owner and approved by City and shall be completed prior to City's issuance of a Certificate of Occupancy for any building constructed on the Owner Tract. The Owner shall not allow any structure nor allow any modification within the limits of the Detention Facility which will adversely affect the performance of the facility. In the event the Owner shall subdivide the Owner Tract into two(2)or more parcels which use the Detention Facility,the owner of each resulting tract shall have the right to perform the maintenance necessary to retain the functionality of the Detention Facility. The maintenance obligation shall be a covenant running with the Owner Tract;provided, however,that in the event any owner Revised 9/2012 Page 1 of 6 Owner Initials conveys its interest in the Owner Tract,such conveying owner shall be released from any and all obligations under this agreement arising after the date of such conveyance. City shall have the right to inspect the Detention Facility at all reasonable times to ensure compliance with this agreement and Owner hereby grants City access to and across the Owner Tract for this purpose. In the event Owner fails to fully perform its obligations under this agreement to maintain the Detention Facility, and such failure continues for thirty (30) days after receipt by Owner of written notice from the City to Owner, City shall have the right to perform the necessary maintenance and receive full reimbursement from the Owner for the reasonable expenses incurred by City in connection therewith. Any notice,request,demand or other communication to be given to the Owner hereunder shall be in writing and shall be deemed to be delivered: if sent by mail, three (3) days following deposit in a U.S. Postal Service receptacle, postage prepaid, as certified mail, return receipt requested; or by (prepaid)national overnight courier service (e.g., FedEx, Airborne,UPS,Express Mail,etc.),addressed as set forth below: To Owner: Owner Name Owner Address Owner City,State,Zip To City: City of Wichita Falls,Texas (Attn: City Manager) 1300 7th Street P.O. Box 1431 Wichita Falls,Texas 76301. Either party may, at any time, or from time to time, designate in writing a substitute address for that above set forth and thereafter all notices to such party shall be sent to such substitute address. ARTICLE THREE Owner agrees to indemnify and hold harmless the City, its officers, agents and employees from all suits, actions or claims, and from all liability and damages for any and all injuries or damages arising solely from or as a result of Owner's negligence in the performance or failure to perform its obligations under this agreement. ARTICLE FOUR Approval of this agreement by the City shall not create any financial obligation of the City, nor does such approval indicate approval of the appropriateness, adequacy or engineering of the Detention Facility. Revised 9/2012 Page 2 of 6 Owner Initials IN TESTIMONY WHEREOF, the parties have caused this instrument to be executed on the date shown above. Owner By: Name Title NOTE: PLEASE COMPLETE APPROPRIATE ACKNOWLEDGEMENT ONLY STATE OF TEXAS § CORPORATE ACKNOWLEDGMENT COUNTY OF WICHITA § BEFORE ME,the undersigned authority, a Notary Public in and for the State of Texas, on this day personally appeared ,known to me to be the person and officer whose name is subscribed to the foregoing instrument and acknowledged to me that same was the act of , a <<State of entity's formation>>, [corporation, limited liability corporation, or limited partnership], as the <<title of officer or agent>>, and that he executed same for the purposes and consideration therein expressed and in the capacity therein stated. GIVEN UNDER MY HAND AND SEAL OF OFFICE this the day of ,20 . Notary Seal Notary Public STATE OF TEXAS § INDIVIDUAL ACKNOWLEDGMENT COUNTY OF WICHITA § BEFORE ME,the undersigned authority, a Notary Public in and for the State of Texas, on this day personally appeared ,known to me to be the person whose name is subscribed to the foregoing instrument and acknowledged to me that he executed same for the purposes and consideration therein expressed. GIVEN UNDER MY HAND AND SEAL OF OFFICE this the day of ,20 . Notary Seal Notary Public Revised 9/2012 Page 3 of 6 Owner Initials City of Wichita Falls,Texas By: Damon Leiker,City Manager STATE OF TEXAS COUNTY OF WICHITA § BEFORE ME,the undersigned authority, a Notary Public in and for the State of Texas, on this day personally appeared Darron Leiker, City Manager for the City of Wichita Falls, Texas, a municipal corporation, known to me to be the person and officer whose name is subscribed to the foregoing instrument and acknowledged to me that same was the act of said City of Wichita Falls,a Texas municipal corporation,and that he executed same for the purposes and consideration therein expressed and in the capacity therein stated. GIVEN UNDER MY HAND AND SEAL OF OFFICE this the day of ,20 Notary Seal Notary Public Revised 9/2012 Page 4 of 6 Owner Initials EXHIBIT "A" _— N_COCOON E. FIT IT' _,'� �ETEN-DON FACILITY REFINERY 8 ASCONSSXUCJRD .�/ � fir..". I MAX.STORAGE VOLUME f� XDOLXX tuft % —J S k MAX RELEASE RATE �' g gpm X , = i ; v J \-- \811 '''' i + I B 1// / /'RAa} a Pri I GRADE BREAK /5 4NG?GPNG. I \ 1 RUME®339. FLUME E®G 59G \ \\ II1 f o \ / o,l f o \\ S I DA o "c' • �.,wloP^oN0.an^I iI IL ea 8 GONC.OUIEET C-1 \Ny\ / STRUCTURE �1 �`�\ o — / �, / � \\\ \ \ \-- POINT of l ` � BEGINNING .,,t�� S.oaroo'ao•W. xx.x � h..1A.L"NU OR LESS "HAN THE :=4,..,E*F}:,s'i, ...IOHN.S.I ... .`',ONA; ®JOHNDOE EXHIBIT "A" t. o�aa� D> ENGINEERING DETENTION FACILITY • • • aa u416?•AN • -MUM «SUBDMSIONNAMF» Revised 9/2012 Page 5 of 6 Owner Initials EXHIBIT"B" DETENTION FACILITY-FIELD NOTES A TRACT OF LAND MORE COMMONLY KNOWN AS THE DETENTION FACILITY IS A PORTION OF«LOT, BLOCK,Su9DIVAION NAME», AN ADDIT,ON To THY OCX OF WICHITA FALLS,TEXAS,AS RECORDED IN VOLUME XX,PAGE X,WICH TA COUNTY PLAT RECORDS.THE BOUNDARY OF THE DETENTION FACILITY IS MORE SPECI-ICALLYJESCR.BED BY METES AND BOUNDS AS FOLLOWS: BEGINNING AT A v,!NC-i IRON ROD FOR THE MOST EASTERLY SOUTHEAST CORNEA OF SAID<dOT, BLOCK»,FOR THE SDI,THEAST CORNER AND PLACE OF BEGINNING OF THIS BOUNDARY: THENCE SOUTH 00°00'00"WEST XX.XX FEET ALONG THE SOUTH LINE OF SAID«LOT>>.TO A POINT FOR THE SOUTHWEST CORNER OF THIS BOUNDARY; THENCE NORTH 00°00'00"WEST XX.XX FEET ALONG THE EXISTING PROPERTY LINE TO THE NORTHWEST CORNER OF THIS BOUNDARY; THENCE NORTH 00°00'00"EAST XX.XX FEET ALONG THE.EXISTING PROPERTY LINE TO THE NORTHEAST CORNER DFTHIS BOUNDARY; THENCE SOUTH 00°00'00"EAST XX.XX FEET TO THE PLACE OF BEGINNING AND CONTAI NI NG XX.XX ACRES OF LAND,MORE OR LESS. Revised 9/2012 Page 6 of 6 Owner Initials