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1983 Ordinance-Subdivision Regulations CITY OF WYLIE, TEXAS SUBDIVISION REGULATIONS ORDINANCE NO. TABLE OF CONTENTS SECTION l. - GENERAL . . 2 SECTION 2. - DEFINITIONS 2 SECTION 3. - PURPOSES, AUTHORITY, AND JURISDICTION 4 SECTION 4. - PROCEDURES . . . . . . . 5 SECTION 5. - GENERAL PLAT REQUIREMENTS 15 SECTION 6. - IMPROVEMENTS . . . . . 19 SECTION 7. - FILING FEES AND CHARGES 41 SECTION 8. - MAINTENANCE BOND . . . 42 SECTION 9. - EXTENSION TO EXTRATERRITORIAL JURISDICTION . . . 42 SECTION 10. - OTHER REQUIREMENTS . . . . . 43 ORDINANCE NO. CITY OF WYLIE, TEXAS SUBDIVISION REGULATIONS AN ORDINANCE PRESCRIBING RULES AND REGULATIONS GOVERNING PLATS, PLANS AND SUB- DIVISIONS OF LAND WITHIN THE INCORPORATED AREA AND EXTRA TERRITORIAL JURISDIC- TION OF WYLIE, TEXAS, HEREIN DEFINED AS THE "CITY"; CONTAINING CERTAIN DEFINITIONS; PROVIDING FOR FINAL APPROVAL OF SUBDIVISIONS BY SECTIONS; PRESCRIBING REGULATIONS FOR STREETS, SIDEWALKS, ALLEYS, SANITARY UTILITIES, WATER MAINS, STORM SEWERS, AND OTHER DRAINAGE STRUCTURES, AND COMMUNITY FACILITIES. PROVIDING FOR A PENALTY OF NOT MORE THAN TWO HUNDRED DOLLARS ($200.00) FOR EACH VIOLATION THEREOF; REPEALING ALL CONFLICTING ORDINANCES; PROVIDING A SEVERANCE CLAUSE; AND PROVIDING AN EFFECTIVE DATE. Whereas, under the provisions of the Constitution and laws of the State of Texas, including particularly Chapters 231, Acts of the 40th Legislature, Regular Session, 1927, as heretofore or hereafter amended (compiled as Art- icles 974a and 6626, V.T.C.S.), and the provisions of Section 4 of the Mu- nicipal Annexation Act (compiled as Article 970a), as heretofore or hereafter amended, hereafter every owner of any tract of land situated within the City of Wylie, who may hereafter divide the same into two (2) or more tracts de- scribed by metes and bounds or otherwise for the purpose of laying out any subdivision of such tract of land or any addition to said City, or for laying out suburban lots or building lots, or any lots, and purchasers or owners of lots fronting thereon or adjacent thereto, and required to submit a plat of such subdivisions or additions for approval by the City Council of the City of Wylie; and Whereas, the rules and regulations of the City established by ordinance, governing plats and subdivisions of the land, be and the same are hereby extended to and shall apply to all of the area under the extraterritorial jurisdiction of said City, as provided for in the Municipal Annexation Act, enacted by the State of Texas and which appears as Article 970a, Vernon's Annotated Civil Statutes. NOW THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF WYLIE, TEXAS, On and after the passage of this Ordinance, any person, firm or corporation seeking approval of any plat, plan or replat of any subdivision of land within the City of Wylie, Texas, and its legally established extraterritorial jurisdiction shall be required to comply with the requirements of this Or- dinance before such approval may be granted, to-wit: -1- SECTION 1. - GENERAL These regulations shall govern every person, firm, association or corporation owning any tract of land within the City Limits or the extraterritorial jurisdiction of the City of Wylie, Texas, who may hereafter divide the same into two or more parts for the purpose of laying out any subdivision of any tract of land or any addition to said City, or for laying out suburban lots or buildings lots, or any lots, streets, alleys, parks or other portions intended for public use, or the use of purchasers of lots fronting thereon or adjacent thereto. SECTION 2. - DEFINITIONS 2.01 - City or the City shall mean City of Wylie, Texas. 2.02 - Subdivision shall mean the division fora tract or parcel of land into two or more parts or lots for the purpose, whether immediate or future, of sale or building development or trans- fer of ownership, and shall include re-subdivision. 2.03 - Re-subdivision shall mean the division of an existing subdi- vision, together with any changes of lot size therein, or with the relocation of any street lines. 2.04 - The word "Shall" shall be deemed as mandatory. The word "May" shall be deemed as permissive. The word "Wi 11" shall be deemed as mandatory. 2.05 - Plat shall mean a map or chart of the subdivision. It shall include plan, plat or replat, in both singular or plural. 2.06 - Commission shall mean the City Planning and Zoning Commission of the City of Wylie, Texas. 2.07 - City Council shall be the duly elected governing body of the City of Wylie, Texas. 2.08 - Administrative officers are every officer referred to by title, i.e., City Manager, City Attorney, City Secretary, City Engineer, Director of Public Works, etc., and shall be the person so retained in this position by the City, or his duly authorized representative. 2.09 - Engineer shall be the City Engineer of the City of Wylie, Texas, the City.s Consulting Engineers, or their duly author- ized representatives. 2.10 - Master Plan shall be the comprehensive plan of the City and adjoining areas as adopted by the City Council and the City Planning and Zoning Commission, including all its revisions and parts. This plan indicates the general location recommend- ed for various land uses, transportation routes, public and private buildings, streets, parks, and other public and pri- vate developments and improvements. -2- 2.11 Preliminary Plat shall be any plat of any lot~ tract~ or parcel of land that is not to be recorded for record but is only a proposed divi sion of 1 and for review and study by the City. 2.12 Final Plat shall be any plat of any lot~ tract~ or parcel of land requested to be recorded for record in the Deed Records of Collin County~ Texas. 2.13 Replatting shall be the re-subdivision of any part or all or any block or blocks of a previously platted subdivision~ addition~ lot~ or tract. 2.14 Street means a way for vehicular traffic whether designated a street~ highway~ thoroughfare~ parkway~ throughway~ road~ avenue~ boulevard~ land~ place~ or however otherwise designated. 2.15 Street Width shall be the shortest distance between the lines which delineate the rights-of-way of a street. 2.16 Residential Street shall be a street which is intended primarily to serve traffic within a neighborhood or limited residential district and which is used primarily for access to abutting properties. 2.17 Collector Street shall be a street which is continuous through several residential districts and is intended as a connecting street between residential districts and thoroaghfares~ highways or business district. 2.18 Arterial Street or Thoroughfare shall be a principal traffic way more or less continuous across the City or areas adjacent thereto and shall act as a principal connecting street with State and Interstate Highways. 2.19 Alley shall mean a minor traffic way used primarily for vehicular service to the rear or side of properties other- wise abutting on a street. 2.20 Cul-De-Sac shall mean a short residential street having but one vehicular access to another street and terminated by a vehicular turn-around. 2.21 Dead End Streets shall mean a street~ other than a cul- de-sac~ with only one outlet. 2.22 Easement shall mean an area for restricted use on private property upon which any public utility shall have the right to remove and keep removed all or part of any buildings~ fences~ trees~ shrubs~ or other improvements or growths which in any way endanger or interfere with the construction~ maintenance~ or efficiency of its respective systems on any of these easements. -3- Any public utility shall at all times have the right of in- gress and egress to and from and upon the said easements for the purpose of constructing, reconstructing, inspecting, pa- trolling, maintaining, and adding to or removing all or part of its respective systems without the necessity, at any time, of procuring the permission of anyone. 2.23 - Building Line shall be a line beyond which buildings must be set back from the street or road right-of-way line or property 1 i ne. 2.24 - Standard Specifications and Codes of the City shall be applied to all improvements constructed within the City and shall be in accordance with all revisions, as may be adopted by the City of Wylie, Texas. 2.25 - Mobile Home Parks are areas renting or leasing sites for trailer coaches or mobile homes. 2.26 - Extra Territorial Jurisdiction (ETJ) is the area adjacent to the City of Wylie within one-half miles of the City limits as specified in Article 974a Vernon1s Texas Civil Statues. 2.27 - Resubmittal of Plans shall be considered as being the same as any new or original submittal. SECTION 3. - PURPOSES, AUTHORITY AND JURISDICTION 3.01 - Under the authority of Article 974a of the Revised Civil Statutes of the State of Texas, which article is hereby made a part of these regulations, the City Council of the City of Wylie, Texas, does hereby adopt the following regu- lations to hereafter control the subdivision of land within the corporate limits of the City of Wylie and in the unincor- porated areas lying within the extraterritorial jurisdiction of the City Limits of Wylie, in order to provide for the or- derly development of the areas and to secure adequate pro- visions for traffic, light, air, recreation, transportation, water, drainage, sewage, and other facilities. 3.02 - As used herein, the term "subdivision" shall mean the division of a tract or parcel of land into two (2) or more lots for the purpose, whether immediate or future, of sale or building or development, and shall ilnclude re-subdivision. "Re-sub- division" shall mean any change in the division of any existing subdivision or any change in lot size therein, or the relocat- ion of any street lines. 3.03 - Any owner of land inside or within one-half (~) mile of the Corporate Limits of the City of Wylie wishing to subdivide such land shall submit to the Planning and Zoning Commission a plan of subdivision which shall conform to the minimum re- quirements set forth in these regulations. An owner subdivid- ing his land into parcels of not less than five (5) acres each for agricultural use and not involving new streets shall be exempt from these requirements. -4- 3.04 - No subdivision plat shall be filed or recorded and no lot in a subdivision inside of or within one half (~) mile of the Coroorate Limits of the Citv of Wvlie shall be imoroved or sold' until the plat shall have been considered by the Planning and Zoning Commission and approved by the City Council. The City shall have the authority to prohibit the install- ation of public utilities in unapproved subdivisions and to prohibit the issuance of building permits for structures on lots in an unapproved subdivision. 3.05 - Any Violation of any provision of the ordinance outside the Corporate Limits of the City of Wylie shall not constitute a misdemeanor under this ordinance be applicable to a vio- lation within such extraterritorial jursidiction, however, a district court shall have the power to grant any or all types of injunctive relief in such cases. SECTION 4. - PROCEDURE 4.01 - PRE-APPLICATION CONFERENCE Prior to the filing of a preliminary plat, the subdivider shall consult with the City Manager or his duly authorized representative concerning the ultimate land-use of the pro- posed development, the suitability of the location of the proposed subdivision, the most advantageous subdivision plan, the arrangement of streets, alleys and lots, and the layout of utility lines and availability of service from trunk mains. A written record of the meeting shall be kept by the City and a copy provided to the developer. 4.02 - Application Procedure A. All property not subdivided into lots, blocks and streets or property to be re-subdivided, within the City or with- in its jurisdiction, shall hereafter be laid out under the direction of the Planning and Zoning Commission and subject to the approval of the City Council, and no other subdivision will be recognized by the City. Prior to the Consideration of the plats by the Planning and Zoning Commission, the City Manager and his duly autho- rized representatives shall check the plats and make recommendations. B. At such time the preliminary plat is filed with the City for review and approval, it will be immediately passed to the City Engineer, who will make a preliminary study of the plat. If it appears substantially complete, the City Engineer will make a visit to the area to determine if there are apparent insurmountable problems with development of subject land. -5- If the City Engineer determines that the preliminary plat as submitted is substantially incomplete and re- quires a significant amount of work by the developer's engineer, the incomplete plat will be immediately re- turned to the developer's engineer, requesting that it be completed before resubmission. The developer, upon resubmittal, shall return all original sheets marked by the City Engineer in this review. C. It shall be unlawful for any owner, or agent of any owner, to layout, subdivide, or plat any land into lots, blocks, and streets within the City, or to sell portions of the property therein, which has not been laid out, subdivided, and platted according to these regulations and the rules of the Planning and Zoning Commission. D. No officer, employee, or consultant of the City shall perform, or cause to be performed, any work upon any streets or in any addition or subdivision of the City, unless all requirements of these regulations have been compl ied with by the owner of the addition or subdivision. E. The City hereby defines its policy to be that the City will withhold improvements of any nature whatsoever, including the maintenance of streets, issuance of build- ing permits, or funishing of sewerage and water service, until the subdivision plat has been approved by the City Council. No improvements shall be initiated nor any contracts executed until written approval has been obtained by the subdivider. F. Any owner or developer of any lot, tract, or parcel of land located within the corporate limits of the City or within its jurisdiction who may wish to effect a subdivision of such land shall conform to the general procedure described as follows: 1. The subdivider shall prepare and submH to the City Pl anni ng and Zoning Commi ss ion a PRELIrUNARY PLAT for its study and recommendations. The prel imi nary pl at sha 11 then be submitted to the CHy Council for final action. The Planning and Zoning Commission and City Council shall act on the preliminary plat within thirty (30) days from the date such plat was filed with each body for their approval. 2. After approval of the preliminary plat by the City Council, the subdivider may then prepare a FINAL PLAT of all or a portion of the land included in the preliminary plat for submission to and consid- eration by the Planning and Zoning Commission for final recommendations. -6- 3. Upon final action on any such final plat by the City Planning and Zoning Commission, the same shall be referred to the City Council, and the City Council shall, at its next succeeding meeting, consider such final plat for acceptance of the dedication of all public property therein set forth, provided that the plat shall in all things fully comply with the terms and provisions of this Ordinance. The Planning and Zoning Commission and City Council shall act on the final plat within thirty (30) days from the date such plat was filed with each body for their approval. 4. Upon acceptance of such plat and public properties by the City Council, the City Secretary shall immed- iately cause such plat to be recorded in the Deed Records of Collin County, Texas. The subdivider shall, however, pay to the City, in advance, the re- quired fees for filing of such plat by the County Clerk. The recording of the final plat shall be the responsibility of the City Secretary. 5. A subdivider shall file a preliminary p~at showing the entire subdivision, and the various phases by which the subdivision will be developed, and that lots may be sold within the phase to be developed upon approval of the final plat of that phase by the City Council. As each consecutive block of a phase is completed. that is, all City utilities are installed and approved by the City staff and the streets and alleys are paved and approved by the City, then building permits may be issued for each completed block on a block by block basis, but no certificate of occupancy shall be issued by the building official until the construction of the approved subdivision phase is completed and the facilities are accepted by the City. 6. The subdivider shall include in the conditions of sale for each lot within the subdivision a notice to the purchaser that no certificate of occupancy shall be issued for any residence constructed therein unless and until the City has approved and accepted construction of that phase of the subdivision. 4.03 - Preliminary Plat An application in writing, for the a~proval of the prelimin- ary plat, together with three (3) prints, shall be filled with the City Secretary at least fifteen (15) consecutive calen- dar days before the meeting of the Planning and Zoning Com- mission, if the plat is to be considered at such meeting. No plat will be considered by the City until the prescribed_ filing fees have been paid. -7- The preliminary plat sheet size s~all not be greater than twenty- four inches (24") by thirty-six inches (36"). Two or more sheets may be used providing self explanatory matching lines are used to connect the subdivision parts. The developers shall submit with the preliminary plat a copy of the boundary traverse calculations of the subdi- vision. The error of closure of the boundary shall not be greater than one in ten thousand (1 : 10,000). The plat shall be drawn to a scale not to exceed one hund- red feet to the inch (1" = 100 I ) . A graphi c sea 1 e sha 11 be provided and all figures and lettering shall be of such a size that if reduced the information is readable and dis- tinct. The information to be included and the procedure for submittals are as follows: A. Existing Features 1. The boundary line (accurate in scale and orientation) of the tract to be subdivided. 2. The location, widths, and names of all existing or platted streets or other public ways within and adjacent to the tract, existing permanent buildings, railroads, rights-of-way and other important features, such as abstract lines, political subdivision or corporation lines, and school district boundaries. 3. Existing sewer mains, water mains, drainage culverts, or other underground structures within the tract and immediately adjacent thereto with pipe sizes, grades, and locations indicated. 4. Contours with intervals of two feet (21) or less, referred to mean sea level datum, by actual field survey. 5. The names of adjacent subdivisions and/or the names of record owners of adjoining parcels of unsubdivided land. B. New Features 1. The proposed name of the subdivision. 2. North point, scale, date, and approximate acreage of the proposed subdivision. 3. The names and addresses of the subdivider and of the engineer,surveyor, or planner. 4. The tract designation and other description according to the real estate records of the City or County Auditor and Recorder; also, designation of the pro- posed uses of land within the subdivision. -8- 5. All parcels of land intended to be dedicated for public use or reserved in the deeds for the use of all property owners in the proposed subdivision, together with the purpose of conditions or limitation of such reservations. 6. The layout, names, and widths of proposed streets, alleys, and easements. 7. The layout, numbers, set-back lines, and approximate dim- ensions of proposes lots, blocks, parks, etc. 8. Provision for the connection of streets with other streets adjacent ot the subdivision and for extension of streets to undeveloped property. C. Utilities A plan of the proposed water and sanitary sewer mains and pro- posed drainage facilities, including drainage areas, location of lines, inlets, culverts, bridges, provisions for discharging onto and crossing adjacent properties, and calculated runoff and points of concentration. D. Location Map A location map of the proposed subdivision on a scale of one inch to one thousand feet (1" = 1,000') showing existing and proposed streets and thoroughfares covering an area at least one (1) mile outside the proposed subdivision. E. Cross-Sections Typical cross-sections of proposed streets showing the width of pavement, type of pavement, and location and width of side- walks. F. Approval Block The following notice shall be placed on the face of each pre- liminary plat by the subdivider. "Preliminary Plat For Review Purposes Only" The following certificate shall be placed on the preliminary plat by the subdivider. -9- "Recommended For Approval" Date Chairman, Planning and Zoning Commission Ci ty of Wyl i e..r:;:Aexas /' G. Date of Final Plat ~ Texas The Planning and Zoning Commission shall be furnished with three (3) prints of the preliminary plat along with a letter of transmittal stating briefly the type of streets, drainage facilities, sanitary facilities and water system at least fifteen (15) days before the regular meeting date of the Planning and Zoning Commission. Said letter shall also delineate provisions for perimeter develop- ments of streets, alleys, water, sewer and drainage. The Planning and Zoning Commission shall take action on any preliminary plat submitted to them, in accordance with these regulations, within thirty (30) days after said plat is filed with the City Secretary. The final action taken on the preliminary plat by the Planning and Zoning Commission and the City Council will not constitute in any manner the acceptance of the subdivision nor the improvements to be placed therein but will be merely an authorization to proceed with the preparation of the final plat. H. Approval The approval of the preliminary plat by the City Council shall be effective for a period of one hundred eighty (180) days after the approval date, unless reviewed by the City Council in the light of new or significant in- formation, which would necessitate the revision of the preliminary plat, such revision being subject to the same procedures as the original preliminary plat. If a final plat for the subdivision, or a portion thereof, has not been submitted, or if a change in requirements has not occurred which would affect the preliminary plat, at the end of the one hundred eighty (180) days after approval, then the City Council will declare the pre- liminary plat null and void, unless the subdivider has, in writing, requested and received an extension of time. -10- 4.04 FINAL PLAT After approval of the preliminary plat by the Planning and Zoning Commission and City Council, a final plat, prepared by a registered public surveyor or a registered professional civil engineer, bearing his seal, shall be submitted to the Planning and Zoning Commission. Three (3) direct prints shall be filed with the City Secretary at least fifteen (15) consecutive calendar days prior to the meeting of the Planning and Zoning Commission at which action is requested. Planning and Zoning Commission and the City Council shall act on the final plat within thirty (30) days from the date such plat was filed with each body for their ap- proval. No plat will be considered by the City as being filed until the prescribed filing fees have been paid. The final plat may constitute all or only a portion of the approved preliminary plat, but any portion thereof shall conform to all the require- ments of these regulations. If final plats are submitted for approval for portions or sections of the proposed subdivision, each portion or section shall carry the name of the entire subdivision but shall bear a distinguishing letter, number, or subtitle. Block letters shall run consecutively throughout the entire subdivision, even though such subdivision might be finally approved in sections. The Planning and Zoning Commission will either recommend approval or disapproval of the final plat and forward it to the City Council. Any action taken by the City Council shall be final, regardless of the previous action by the Planning and Zoning Commission. -11- One of the final plats on reproducible material shall be drawn on sheets measuring seventeen and one-half (17!) inches by twenty-three and three-quarters (23-3/4) inches. Two or more sheets may be used providing self explanatory matching lines are used to connect the subdivision parts. A graphical scale shall be provided and all figures and lettering shall be of usch a size that if reduced the information is readable and distinct. The final plat shall show or be accompanied by the following information: A. The boundary lines with accurate sistances and bearings, a metes and bounds description of the boundary (error of closure shall not exceed one (1) in ten thousand (10,000)), exact acreage, and the exact location and width of all existing or recorded streets intersecting the boundary of the tract. One (1) copy of the traverse closure sheet shall be enclosed. B. True bearings and distances to the nearest established street lines, official monuments, or subdivision corner, which shall be accurately described on the plat. Munic- ipal, township, county, or abstract lines shall be ac- curately tied to the lines of the subdivision by distances and bearings. C. An accurate location of the subdivision in reference to the deed records of the County which shall include the volume and page of the deed of the property to be sub- divided. D. The exact layout including: 1. Street and/or alley names: 2. The length of all arcs, radii, internal angles, and points of curvature, length and bearing of the tangents: 3. All easements for right-of-way provided for public services or utilities and any limitations of the easements; and, 4. All lot numbers and lines, with accurate dimensions in feet and hundredths and with bearings and angles to street and alley lines to the nearest second. E. The accurate location, material, and approximate size of all monuments. F. The accurate outline description of all property that may be offered for dedication for public use, such as parks, etc., with the purpose indicated thereon, and all pro- perty that may be reserved by deed covenant for the common use of the property owners in the subdivision. G. Building set-back lines. -12- H. Private restrictions. I. Name of the proposed subdivision. J. Name and address of the Subdivider. K. North Point, scale, and date. L. Construction plans and profiles shall be drawn on sheets measuring twenty-four inches (24") by thirty-six inches (36"), and shall include the following information. 1. A plan and profile of each street with top of curb grades shown. Each sheet shall include north point, scale, date and bench mark description to sea level datum. Unless otherwise approved by the City, scales shall be one inch equals twenty feet (I" = 20') horizontally and one inch equals five feet (I" = 51) vertically. Each plan shall show the seal and sign- ature of the registered professional civil engineer who prepared the plans. 2. The cross-section of proposed streets showing the width of roadways, type of pavement, location and width of sidewalk, and various slopes of earthwork, sidewalks and drives. 3. A plan and profile of proposed sanitary sewer, with grades and pipe sizes indicated and showing locations manholes, cleanouts, etc., and a plan, and if required, a profile of the proposed water distribution system showing pipe sizes and location of valves, fire hy- drants, fittings, etc" in conformance with the ap- plicable criteria presented in SECTION 6 - IMPROVE- MENTS. Unless otherwise approved by the City, scales sha 11 be one inch equals one hundred feet (1" = 100') hori zonta lly and one inch equals fi ve feet (111 = 5') vertically. Each shall show the seal and signature of the registered professional civil engineer who prepared the plans. Each sheet shall include north point, scale, date, and bench mark description to the mean sea level datum. 4. A plan and profile of the proposed storm sewers, showing hydraulic data and gradients, pipe grades and sizes, manholes, inlets, pipe connections, outlet structures, etc., in conformance with the criteria as shown in SECTION 6 - IMPROVEMENTS. Unless other- wise approved by the City, scales shall be one inch equa 1 s twenty feet (1" = 20') hori zonta lly and one inch equals fi ve feet (1" = 5 I) verti ca lly. Each plan shall show the seal and signature of the re- gistered professional civil engineer who prepared the plans. Each sheet shall include north point, scale, date, and bench mark description to sea level datum. -13- M. Certification shall be made by a registered professional civil engineer or licensed land surveyor, registered in the State of Texas, to the effect that the plan represents a survey made by him or under his direct supervision and that all monuments shown thereon actually exist, and that their location, size, and material are correctly shown. N. A certificate of ownership and dedication of all streets, alleys, parks, and playgrounds to public use forever, signed and acknowledged before a Notary Public, by the owner and lien holder of the land, and a complete and accurate description of the land subdivided and the streets dedicated. O. The following certificate shall be placed on the plat, in a manner that will allow the filling in of the certi- ficate by the proper party. "Recommended For Approval" Chairman, Planning and Zoning Commission City of Wylie, Texas Date Approved and Accepted Mayor, City of Wylie, Texas Date The undersigned, the City Secretary of the City of Wylie, Texas, hereby certifies that the foregoing final plat of the Subdivision or Addition to the City of Wylie was submitted to the City Council on the day of 19 , and the Council, by formal action, then and there accepted the dedication of streets, alleys, parks, ease- ments, public places, and water and sewer lines, as shown and set forth in and upon said plat, and said Council further authorized the Mayor to note the acceptance thereof by signing his name as hereinabove subscribed. Witness my hand this 19 day of , A. D. , City Secretary City of Wylie, Texas" P. Certificate showing that all taxes and fees have been paid on the tract to be subdivided. -14- The final plat shall be recorded by the City Secretary in the office of the County Cl erk of the County wi thi n thirty (30) days from and after the date of final ac- ceptance by the City Council; the subdivider shall, how- ever, pay to the City, in advance, the required fees for filing of such plat by the County Clerk. Q. Six (6) sets of plans and specifications for water, sanitary sewer, paving, and drainage improvements, pre- pared by a registered professional civil engineer, shall be approved and retained by the City prior to any con- struction in the subdivision. The approval of construction drawings by the City Council shall be effective for a period of two (2) years after the approval date, unless the subdivider has requested in writing, and received an extension of time. Construc- tion drawings which have expired shall be resubmitted to the City for approval before any construction is be- gun. The design of the proposed improvements shall be based on the construction requirements which are in affect at the time of resubmittal . SECTION 5. - GENERAL PLAT REQUIREMENTS All requirements pertaining to lot size, yard size, dwelling size, lot coverage, height, parking, loading and screening contained in the current Zoning Ordinance of the City shall be adhered to for development under this ordinance. 5.01 STREETS A. The arrangement, character, extent, width, grade, and location of all proposed streets shall conform to the general plan of the community, and their relationship shall be considered to that of the existing and planned streets, to topographical conditions, to public conven- ience and safety, and in their appropriate relation to the proposed used of the land to be served by such streets. B. Where such is not shown in the general plan for the com- munity, the arrangements of streets in a subdivision shall: 1. Provide for the continuation of appropriate pro- jection of existing principal streets in surround- ing areas; 2. Conform to a plan for the neighborhood approved or adopted by the City to meet a particular situation where topographical or other conditions make con- tinuation of or conformance to an existing street impracticable; and, -15- 3. Be laid out so that they shall intersect, as nearly as possible, at right angles. C. Residential streets shall be so laid out that their use by through traffic shall be discouraged. D. Street jogs with centerline offsets of less than one hundred twenty-five feet (1251) shall be avoided. E. Street right-of-way widths shall conform to the Cityls Circulation Plan as modified herein, and shall meet the following and the requirements of Section 6.02. Type of Street Type A - Major Thoroughfare Type B - Major Thoroughfare Type C - Collector Type 0 - Residential Minimum Right-Of-Way Widths 100' 65' 60' 50' F. Half streets shall be prohibited, except where necessary to the reasonable development of the subdivision in con- formance with the other requirements of these regulations and where the City finds it will be practicable to re- quire t~ dedication of the other half when the street has already been provided adjacent to an area to be sub- divided; the other remaining portion of the street shall be platted within such subdivision. Where part of a residential or collector street is being dedicated along a common property line, the first dedication shall be one-half (1/2) on the proposed street right-of-way plus five feet (5'). G. Cul-de-sacs in residential additions shall not be longer than six hundred feet (600') from the nearest intersection, and in industrial areas they shall not exceed one thou- sand feet (1,0001) from the nearest intersecting street, and there shall be provided at the closed-end a turn- around having an outside roadway diameter of at least eighty feet (80') and a street property line diameter of at least one hundred (100'). H. All streets shall be paved, and the paving shall con- form to the II SECTION 6 -IMPROVEMENTS ", of these regu- lations. I. Street grades shall be established regarding topography, proposed land-use, and the facilities in the area sur- rounding the land to be subdivided. An absolute minimum grade of three tenths percent (0.30%) will be allowed on concrete streets; however, where it is possible, a grade of five tenths percent (0.50%) shall be used. -16- J. Street name markers shall be installed, in accordance with the prescribed type currently in use by the City of Wylie, or an approved equal, as approved by the City Manager. Street markers and the installation thereof will be at the expense of the subdivider. K. Residential lots shall not face arterial streets or thor- oughfares and driveways or alley pavement accesses shall not be permitted on arterial streets. Alleys shall be provided along side and rear lot lines on arterial streets for rear entrance. 5.02 - ALLEYS A. Alleys shall be provided in commercial and industrial districts, and shall be paved with reinforced concrete except that the City may waive this requirement where other definite and assured provisions are made for service access, such as off-street loading, unloading, and parking consistent with and adequate for the uses provided. B. Alleys shall be provided in all residential areas when feasible and shall be paved with reinforced concrete. C. The minimum right-of-way width of an alley shall be twenty feet (201) in industrial and commercial areas and fifteen feet (I51) in residential areas. The alley turnouts shall be paved to the property line and shall be at least two feet (2') wider than the alley paving at that point. The radii of the turnouts for alleys intersecting thoroughfares shall be fifteen feet (15') and shall be ten feet (10') at inter- ections with all other streets. D. Alley intersections and sudden changes in alignment shall be avoided, but, where necessary, lot corners shall be cut off at least fifteen feet (IS') along each tangent from the point of intersection to permit safe vehicular movements. E. All Alleys shall be paved, and the paying shall conform to 1I.SECTION 6 - IMPROVEMENTS" of these re~ul ations. f. Where driveways connect to alleys in commercial, industrial, or residential areas, fences shall only be constructed along the rear lot line of any lot to a point within five feet (51) of a point where the driveway would intersect the alley pave- ment a ninety degrees (90~). Fences to be constructed along any diveway or perpendicular to alleys shall berth be con- structed within five feet (5') of the rear lot line or alley easement line. -17- 5.03 LOTS A. All lots shall conform to the regulations as set forth in the City's Zoning Ordinance. B. Corner lots in residential areas shall be wider than inside lots so as to allow an appropriate set-back from both streets. C. Each lot shall face onto a public street or a private drive, except in a planned unit development. Lots with street frontage at both front and rear shall be avoided, except when backing onto a highway or thoroughfare. D. Side lines of lots shall be approximately at right angles to straight street lines and radial to curved street lines. 5.04 - EASEMENTS A. Utility and drainage easements shall be provided only at the rear of a lot or along a side lot line and shall be at least fifteen feet (151) wide. B. Where a subdivision is bounded by a water course, drainage way, channel, or stream, there shall be provided a storm water easement or drainage right-of-way conforming sub- stantially to the lines of such water course, or of such width to provide for any future anticipated construction, plus a minimum of ten feet (101) on each side. C. Where a subdivision contains a portion of a flood plain, an easement shall be provided to accommodate the 100-year flood. 5.05 - BLOCKS A. The lengths, widths, and shapes of blocks shall be determined with regard to the following items. 1. Provision of adequate building sites suitable to the special needs of the type of use proposed; 2. Zoning requirements as to lot sizes and dimensions; 3. Needs for convenient access, circulation, control, and safety of traffic; and, 4. Limitations of topography. B. Where no existing subdivision controls, the blocks shall not exceed one thousand two hundred feet (1,200') in length or be less than five hundred feet (500') in length, except in certain instances where topographical features warrant special consideration. These limits shall be exceeded only upon specific approval by the City. Blocks longer than six hundred feet (600') shall be avoided in business districts. -18- 5.06 - MOBILE HOME PARKS AND MOBILE HOMES Development of mobile home parks for locating mobile homes shall be in accordance with the provisions of the Ordinance regulating "Mobile Home Parks and Mobile Homes" and shall meet the approval of the City Planning Commission and City Council. 5.07 - SURVEY MONUMENTS AND LOT MARKERS A. Permanent Survey Reference Monuments A concrete monument, six inches (6") in diameter and twenty- four inches (24") long, shall be placed at all boundary corn- ers, block corner, curve points, and angle points. A Copper pin i-inch in diameter embedded at least three inches (3") in the monument shall be placed at the exact boundary point. The monuments shall be set at such an elevation that they will not be disturbed during construction, and the top of the monument shall be not less than twelve inches (12") below the finished grade of the development. B. Lot Markers Lot markers shall be 1/2-inch diameter, reinforcing bar, eithteen inches (18") long, or approved equal, and shall be placed vert- ically at all lot corners flush with the ground, or below ground, if necessary, in order to avoid being disturbe. SECTION 6. - IMPROVEMENTS 6.01 - STANDARD SPECIFICATIONS AND CONSTRUCTION DETAILS All improvements proposed for any subdivision to be developed under the jurisdiction of these ordinances shall be furnished and installed by the subdivider in accordance with the standard specification and construction details of the City of Wylie, Texas, and the other app- licable specifications noted herein, or in the absence of such spec- ifications and details, to meet the approval of the City. Reproducible standard drawings may be obtained (when they become available) from the City Engineer by payment of a fee to the City of Wylie in the amount stated in the current Wylie Fee Ordinance. 6.02 - STREET PAVING - CONCRETE A. Concrete Strength Requirements 1. Concrete Curb and Gutter Concrete curb and gutter shall be constructed of a concrete batch design, providing a twenty-eight (28) day compressive strength of three thousand (3,000) pounds per square inch (p.s.i.) 2. Reinforced Concrete Pavements and Monolithic Curb Concrete pavement and monolithic curb properly and continuously reinforced shall be constructed of a concrete batch design, providing the twenty-eight (28) day -19- compressive strength required in the following Section B. B. PAVEMENT REQUIREMENTS 1. Residential Street and Alley Construction The subdivider shall, at his own cost and expense, pay for constructing all residential streets and alleys in to his subdivision and one-half (1/2) of all perimeter streets and alleys. A Six-inch (6") thickness of three thousand (3,000) p.s.i. reinforced concrete pavement on a compacted subbase shall be required. Said six-inch (6") thickness will be acceptable without performing additional soils investi- gation or design calcuations. All steel reinforcing shall be deformed No.3 bars on twenty-four (24") centers both ways. Stabilization of the subgrade, six inches (6") thick with six percent (6%) hydrated lime by weight, shall be required. Compaction of the lime stabilization shall be to 95% standard proctor density. 2. Collector Street and Commercial or Industrial Alley Construction The subdivider shall, at his own cost and expense, pay for constructing all collector streets and alleys in his subdivision and one-half (1/2) of all perimeter streets and alleys. Collector streets and alleys shall be designed and con- structed with eight-inch (8") thickness of three thou- sand five hundred (3,500) p.s.i. reinforced concrete pavement on a compacted subbase. All steel reinforcing shall be deformed No.3 bars on twenty-four inch (2411) centers both ways. Stabilization of the subbase with a six-inch (6") thick- ness of six percent (6%) hydrated lime by weight will be required. Compaction of the lime stabilization shall be to 95% standard proctor density 3. Major Thoroughfare Construction On roadways, adjacent to the proposed subdivision, that are designated to be City thoroughfares, the subdivider shall be required to construct, at his own cost and expense, one-half (1/2) of the street section with one (1) integral curb on the side nearest the property line. In lieu of this construction being performed immediately, the subdivider shall place in escrow for the City's account an amount equal to the construction cost of the one-half street section, including the integral curb, for the purpose of paving this section at a later date. -20- Thoroughfares shall be designed and constructed with an eight-inch (8") thickness of three thousand five hundred (3,500) p.s.i. reinforced concrete pavement on a compacted subbase. All steel reinforcing shall be deformed No.3 bars at twenty-four inch (24") centers both ways. Stabilization of the subbase with a six-inch (611) thickness of six percent (6%) hydrated lime by weight will be required. Compaction of the lime stabilization shall be to 95% standard proctor density. C. Paving Width Requirements 1. Residential Streets, Collector Streets, and Alleys Residential street paving shall be a minimum of twenty- six feet (261) in width, measured between the faces of curbs. Collector street paving shall be a minimum of thirty-six feet (361) in width, measured between the faces of curbs, except that the width for collector streets in industrial and commercial areas must be a minimum of forty-four feet (441) in width, measured between the faces of the curbs. Alley paving shall be ten feet (101) wide in residential areas and sixteen feet (161) wide in commercial and industrial areas. Alley turnouts shall be paved to the property line and shall be at least two feet (21) wider than the alley paving at that point. Paving radius where alleys intersect residential and collector streets shall be ten feet (101) and where alleys intersect thoroughfare streets the radius shall be fifteen feet (151). 2. Major Thoroughfares The location for the proposed major thoroughfares and their respective pavement widths shall conform to the Circulation Section of the City1s Comprehensive Plan Report, June 1980. The following minimum pavement widths are, therefore, set by this Ordinance for the construction of thoroughfares as follows: -21- Thoroughfare Minimum Right- Minimum Pavement Width Classification of-Way Width Between Faces of Curbs Type A 100' Two-331 Traffic Lanes d1vided by a 151 median Type B 65' Four 111 Traffic Lanes Type C 60' 36' Note: The minimum width of a median adjacent to a left turn lane shall be five (5) feet. 3. Street Returns a. The minimum radius for all street returns shall be twenty feet (20'). b. Returns for driveways on residential streets shall be ten feet (10'), commercial and industrial driveway returns shall be a minimum of ten feet (101) and a maximum of twenty feet (20') except in special cases. D. Miscellaneous 1. Reinforcing Steel Steel for street and alley paving shall meet ASTM designation A 15, A 16 or A 408 and be deformed bars. 2. Sawed Dummy Joints Sawed dummy transverse joints shall be not greater than 20' - 2" apart and as required by the City Engineer at intersections. Longitudinal sawed dummy joints shall be required in all pave- ments where the concrete is poured in a continuous width of 30 feet or more. The longitudinal dummy joint shall at a one- third point of the width or as directed by the City Engineer. 3. Expansion Joints Expansion joints shall be placed at distances no greater than 600 feet and shall be constructed in accordance with the City of Wylie standard. Construction joints shall be constructed in accord- ance with the expansion joint standard. Sawed expansion joints shall have dowels at 24 inch centers that are acceptable to the City Engineer. Construction joints shall have the reinforcing bars continous through the joint. -22- 4. Longitudinal Pavement Slopes The minimum longitudinal standard alley pavement slopes shall be as set forth in Section 5.01, I. The maximum longitudinal slopes are as follows: TYPE OF STREET MAXIMUM SLOPE Type A - Major Thoroughfare 6% Type B - Major Thoroughfare 6% Type C - Collector 8% Type D - Residential 10% Maximum grades for alleys shall be 8% within 30 feet of its inter- section with a street and 14% elsewhere. 5. Transverse Pavement Slopes The transverse pavement slope for all non-divided streets shall consist of a parabolic curve from the pavement center- line (which height shall befour (4) inches above the gutter elevation) to the gutter. For divided streets the transverse slope shall be as required by the City Engineer. 6. Lime Stabilization Hydrated lime shall be spread uniformly over the soil to be treated and sprinkled to the proper moisture content. The soil, lime and water shall be mixed until a homogeneous product is obtained that is free of clods and lumps. The mixture will then be immediately rolled to the required compaction. 6.03 - SIDEWALKS Concrete sidewalks shall have a width of not less than four feet (41) and a thickness of not less than four inches (4") and shall be constructed of two thousand (2,000) p.s.i. concrete on both sides of all streets and thoroughfares within the subdivision. Sidewalks shall be con- structed one foot (I') from the property line within the street or thoroughfare right-of-way and shall extend along the street frontage including the side of corner lots and block ends. Construction of sidewalks adjacent to curb in residential areas will be considered only where driveway entrances are constructed from the rear of lots on both sides of the street for the full length of the block. In these instances, the sidewalks shall be five feet (51) wide. -23- Sidewalks in Commercial areas shall be a mlnlmum width of five (5) feet or extend from the back of the curb to the building line as required by the City. Sidewalks in Industrial areas and Planned Developments will be as required by the City. All Concrete for sidewalks shall be placed on two-inch (2") sand cushion and shall be reinforced with 6 x 6 No. 10 guage welded wire fabric. Longitudinal slope of sidewalks shall be that of the curb adjacent to the sidewalk. The transverse slope of the sidewalk shall be ~-inch per foot starting at the back of the curb. The maximum ground slope from the edge of the sidewalk on the property line side shall not exceed 11%. If it does exceed eleven percent (11%) a retaining wall shall be provided on the property line that is acceptable to the City Engineer. Sidewalks shall be constructed by the individual home builder and shall be inaccordance with the City approved plans. 6.04 - STORM SEWERS A. General 1. Plans, profiles, and specifications shall be prepared for storm sewer improvements to be constructed and shall show the locations, sizes, grades, hydraulic gradients, and other details for the pro- posed pipe, inlets, manholes culverts, outlet structures, and other appurtenances. Each sheet of plans and profiles shall bear the seal and signature of the registered professional civil engineer who prepared them. 2.The subdivider shall pay for the cost of all drainage improvements connected with development of his subdivision, including any necessary off-site channels or storm sewers and acquisition of any required easements which will be deeded to the City of Wyl ie. A. An enclosed storm sewer shall be provided in all areas where the quantity of the accumulated storm water runoff does not exceed two hundred (200) c.f.s. B. In drainage courses where the accumulated storm water runoff is more than two hundred (200) c.f.s. and less than five hundred (500) c.f.s., either an enclosed storm sewer system or a concrete lined channel shall be constructed C. In drainage courses where the accumulated storm water runoff is more than five hundred (500) c.f.s., the drainage improvements may be either an enclosed storm sewer, a concrete-lined channel, or an earthen channel. Earthern channels shall be designed according to the criteria as set fourth herein for open channel sections. -24- 3. The design of storm drainage improvements in the City of Wylie shall be based on flood discharges determined by the Rational Method. The equation for calculating storm water flows in this manner is: Q = CIA, where " Q is the storm water flow at a given point, measured in cubic feet per second; C is the coefficient equal to the ratio that the peak rate of runoff bears to the average rate of rainfall; I is the average intensity of rainfall for a period equal to the time of flow from the farthest point of the drainage area to the point of concentration of the storm flow at the design point. A is the area, in acres, tributary to the design point. B. Runoff Coefficient. The runoff coefficient, which considers the slope of the terrain, the character of the land-use, the length of over- land flow, and the imperviousness of the drainage area, shall be determined from the ultimate land development as shown on the Comprehensive Plan Report of the City of Wylie. The minimum runoff coefficient for the appropriate land uses shall be as follows: Commercial Areas Industrial Areas Residential Areas "Apa rtment Areas Park Areas Churches & Schools 0.90 0.70 - 0.45 - 0.70 - 0.35 0.50 0.90 0.60 0.80 0.40 - 0.90 C. Rainfall Intensity - Frequency The rainfall intensity - frequency curves, which are shown on Plate 1, are plotted from data published by the U. S. Depart- ment of Commerce Weather Bureau, Technical Paper No. 40. The intensity, I, in the formula Q = CIA, is determined from those curves by arriving at a time of concentration and adopting a storm frequency upon which to base the drainage improvements. 1. Time of Concentration The time of concentration at a design point consists of the inlet time of the farthest point in the system plus the flow time from that point to the design point. The inlet time consists of the overland flow time plus the gutter flow time required for the storm water to move from the farthest point contributing to inlet point of the system. -25- A minimum time of concentration of fifteen (15) minutes shall be used for all areas except commercial areas, and a minimum time of concentration of ten (10) minutes shall be used in commercial areas. A nomograph, shown on Plate 2 is attached for estimating the time of concentration. 2. Storm Frequency The storm drainage improvements in the City of Wylie shall be designed on the storm frequencies shown in the following table. TYPE OF DESCRIPTION OF AREA MAX IMUM TIME OF DESIGN FACILITY TO BE DRAINED CONCENTRATION FREQUENCY (Minutes) (Years) * Storm Sewers Residential, Commercial 30 25 and Industrial ** Culverts, Any type of area less 30 25 Bridges, than 100 acres Channels & Creeks *** Culverts, Any type of area greater 45 25 Bridges, than 100 acres but less Channels than 1 ,000 acres and Creeks Culverts, Bridges Any type of area greater 60 25 Channels & than 1 ,000 acres Creeks * When the maximum time of concentration or area to be drained is exceeded, the design shall be based on a fifty (50) year frequency. ** When the maximum time of concentration or area to be drained is exceeded, the design shall be based on a one hundred (100) year frequency. *** Whenever, in a storm sewer system, an inlet is located at a low point so that flow in excess of the storm sewer capacity would be directed onto private property, the design frequency shall be increased beyond twenty five (25) years. If the inlet location is such that overflow could cause damage or serious inconvenience, it may be desirable to increase the design frequency to as much as one hundred (100) years. -26- D. Area The area used in determining flows by the "Rational Equation" shall be calculated by subdividing the map of the development into drainage areas within the basin contributing storm water runoff to the system base upon street, alley and ground topo- graphy. E. Spred of Water During the design storm, the quantity of storm water that is allowed to collect in the streets before being intercepted by a storm drainage system is referred to as the "spread of water". In determining the limitations for carrying storm water in the street, the ultimate development of the street shall be considered. The use of the street for carrying storm water shall be limited to the following: SPREAD OF WATER Major thoroughfares (divided) - one (1) traffic lane on each side to remain clear. Major thoroughfares (not divided) - Two (2) traffic lanes to remain clear. Collector streets One (1) traffic lane to remain clear. Residential streets - Six inch (6") depth of flow at curb, or no lanes completely clear. Curves are provided on Plate 3 for determining the spread of water for certain gutter slopes, gutter discharge, and pavement crown. Also provided are nomographs for determining the capacity of gutter flow (Plates 4 and 5) and a curve for determining the curb inlet opening length (Plate 6). -27- F. Storm Sewer Design Storm water in excess of that allowed to collect in the streets shall be intercepted in inlets and carried away in a storm sewer system. Storm sewer capacity shall be calculated by Manningls Equation-- Q = 1.486 AR2/3 SI/2; where, n Q is the discharge in cubic feet per second; A is the cross-sectional area of flow in square feet; R is the hydraulic radius in feet; S is the slope of the hydraulic gradient in feet per foot; and, n is the coefficient of roughness (n = .013 for concrete pipel. In the design of the storm sewer system the elevation of the hydraulic gradient of the storm sewer shall be a minimum of one and one-half feet (1.51) below the elevation of the adjacent street gutter. Storm sewer pipe sizes shall be so selected that the average velocity in the pipe will not exceed fifteen feet (15') per second nor be less than three feet (3') per second. Storm sewer pipe shall be reinforced concrete culvert pipe conforming to ASTM Designation C76 Class III. G. Open Channel Design Storm water runoff in excess of that allowed to collect in the streets in developed areas and runoff in undeveloped areas may be carried in open channels (not in the streets right- of-way). Open channel capacity shall be calculated by Manningls Equation, and roughness coefficients and maximum mean velocities. Type of Lining Earth (Bermuda Grass) Earth (Non-Vegetated) Concrete Lined Weathered Roughness Coefficient "n" Maximum Permissible ~~ean Velocity 0.035 0.030 0.015 0.030 8 ft. per sec. 5 ft. per sec. 15 ft. per sec. 12 ft. per sec -28- Open Channels shall be constructed with a trapezoidal cross- section and shall have side slopes no steeper than 4:1 in earth and 1.5:1 when lined with concrete. Earth open channels must receive special approval by the City and must be sodded with Bermuda grass to the satis- faction of the City. The subdivider shall dedicate a right-of-way on all earthen and concrete-lined channels of sufficient width to provide for excavation of the open channel of proper width, plus ten foot (101) width on each side to permit ingress and egress for maintenance, or as required by the City. H. Culvert Design At locations of creek crossings with proposed roadway improvements, it is sometimes necessary to receive and transport storm water under the roadway in culverts. The quantity of flow shall be determined by the Rational Method and the capacity of the culvert shall be calculated by Manning's Equation. Design of culverts shall include the determination of upstream backwater conditions as well as downstream velocities and flooding conditions. Consideration shall be given to the discharge velocity from culverts, and the following limitations are allowed. CULVERT DISCHARGE - VELOCITY LIMITATIONS Culvert Discharging Onto Earth Sod Earth Paved Apron Riprap Apron Shale Rock Maximum Allowable Velocity (f.p.s.) 6 8 15 12 10 12 Generally, all culverts shall be designed with a free outfall, and the following head losses shall govern the design of the culvert. -29- 1. Frictional Head Loss h f = S f L, Where S f = Slope of hydraulic gradient in feet per foot; and L = Length of culvert in feet. 2. Head Loss Due to Change in Velocity h v = V 2 2 - V 1 2, where, V 2 = Velocity in culvert; V 1 = Velocity in channel above culvert; and, g = Acceleration due to gravity. 3. Head Loss at Upstream Entrance to Culvert Due to Entrance and Change in Section he = V 2 2, where V 1 is equal to or less than six feet per second. 2g he = V 2 2 - 0.5 V 1 2. where V 1 is greater than six feet per secon( 2g 6.06 - WATER SYSTEM Water systems shall have sufficient number of outlets and shall be of sufficient size to furnish adequate domestic water. to furnish fire protection to all lots. and to conform with the City.s Comprehensive Plan Report. A. In zoning districts, SF-I, SF-2, 2F, and MH, the minimum size of water main shall be six inch (6") diameter. The distribution system shall be gridironed with minimum size six inch (6") diameter mains at intervals not to exceed one thousand two hundred feet (1,200'). Where intervals between "cross connecting" mains must exceed one thousand two hundred feet (1,2001), where dead-ends must exists, (or where in the opinion of the City they are needed). eight inch (8") diameter or larger mains shall be installed. -30- B. In cul-de-sacs of less than three hundred (3001) feet in length where a fire hydrant is not required, four inch (4") mains may be used. C. Eight inch (8") and larger mains shall be installed in all streets in zoning districts, MF, R, B-1, B-2, I and PO, with minimum size eight inch (8") intersecting mains every six hundred feet (6001). Where dead-ends must exist, eight inch (811) or larger mains shall be installed, The minimum limits set forth in the above shall not be exceeded except upon the specific approval by the City Engineer, City Building Official, and the Fire Chief, but in no event shall these requirements be less than minimum required by the State Board of Insurance or the Fire Prevention and Engineering Bureau of Texas. D. All water mains in residential areas shall be constructed at least four (4) feet behing the curb on the north or east side of the street or in an easement unless otherwise approved by the City. In commercial and industrial areas, the mains shall be located in accordance with the requirements of the City. F. The ductile iron pipe shall have a single rubber gasket joint, shall have a cement mortar lining of the IIEnamelingll type, or approved equal, and shall have a minimum earth cover of forty two inches (4211). Hater mains fourteen inch (1411) and larger may be either ductile iron pipe, thickness Class 50 minimum, with cement mortar lining, or reinforced concrete steel sylinder pipe, Class 150 minimum. Ductile iron pipe shall be required in all bores, in unstable soil conditions (expansive clays, unstable subsoil), in or near creeks or where lines must be installed at shallow depths (less than 3011). The ductile iron pipe shall be centrifugally cast in metal molds in accordance with the applicable specifications of ANSI A21.5 (AWWA C151) and Federal Specification WW-P-421c. The joint details shall be in accordance with the applicable specifications of ANSI A21.11 (AWWA Clll). Prior to approval of plans and specifications, the subdivider shall perform a soil survey to establish the corrosive characteristics of the soil at, and along, the alignment of the proposed water mains. If the corrosive characteristics of the soil are found to be excessive, then an approved polyethylene encasement or wrapping of ductile iron pipe shall be installed to protect the pipe. Polyvinyl chloride (PVC) pipe may be installed for water mains in the public water utility system. -31- 1. PVC Pi pe PVC pipe shall be new, manufactured in the United States of America, and shall conform to the current specifications of AWWA C900, PVC pipe with cast iron outside dimensions and with rubber ring joints. PVC water pipe shall be listed by Underwriters Laboratories and approved for use in cities and towns of Texas by the State Board of Insurance. The rigid PVC pipe shall bear the seal of approval (or "NSF" mark) of the National Sanitation Foundation Testing Laboratory for potable water pipe. Provision must be made for contraction and expansion of each joint with a rubber ring and an integral thickened bell as part of each joint. Pipe and fittings must be assembled with a non-toxic lubricant. Pipe shall be made from NSF approved class 12454-A or B PVC compound con- forming a minumum ASTM resin specification 01784. PVC pipe shall be Class 150 (DR 18) and meet the physical dimensions as shown on the following list. 4 6 8 4.08 6.90 9.05 Class 150 (DR 18) Minimum Wall Thickness (Inches) 0.343 0.493 0.646 Nominal Size (Inches) Outside Diameter (Inches) PVC pipe shall be designed for a minumum 150 p.s.i. water pressure, plus a 35 p.s.i. surge allowance. Service connections to PVC pipe shall not be made by direct tapping for service lines; a double strap brass tapping saddle with stainless steel bolts shall be used to tap service lines. 2. PVC Pipe Special Embedment PVC pipe shall be placed on a four-inch (4") foundation layer of crushed rock or rounded gravel bedding material with a size range of 3/8 inch to 5/8 inch. The trench shall be backfilled with a minimum of six inches (6") of sand on the sides and twelve inches (12") (loose) over the top of the pipe and consolidated to a minimum of 90 percent standard proctor density. This is basic - Class "B" as defined by ASCE Manual No. 37 and latest edition AWWA C900. Final backfill is to conform to Section W.4.16.1, or Section W.4.16.2 The Class "B" embedment material is further defined as follows: a. 95% of Material Passing 3/4" Screen b. 95% of Material Retained on No.4 Screen. -32- Tracer tape, blue in color, similar to Terra Tape "0" DETECTABLE, as supplied by Griffolyn Co., Inc., Houston, Texas, shall be installed in the backfill material over top of the PVC-non metallic pipe in accordance with the manufacturerer's recommendations. G. Fittings shall be either gray of ductile cast iron with mechanical joints or single rubber gasket slip joint and shall be cement-lined and coated inside and out with a seal- coat of bituminous material, unless the pipe material is pre- tensioned or prestressed concrete steel cylinder, in which case, special fittings shall be furnished. All gray or ductile cast iron fittings shall conform to the applicable standards and specifications of ANSI, latest edition. H. Gate valves shall conform to American Water Works Association Specification C500, latest edition. Valves shall be designed for a minimum water working pressure of 150 pounds per square inch. Gate valves shall have a clear waterway equal to the full nominal diameter of the valve and shall be opened by turning to the left. Each valve shall have the maker's initials, pressure rating, and year in which manufactured cast in the body. All valves buried in the ground shall be provided with cast- iron valve boxes of proper dimensions to fit over the valve bonnets and to extend to such elevation at or slightly above the finished street grade or ground line, as approved by the City. Tops shall be complete with covers and shall be adjustable. Valve boxes shall be set vertical and concentric with the valve stem. Any valve box which has so moved from its origianl position as to prevent the application of the valve key shall be satisfactorily reset by the developer at his own expense. A concrete pad of the dimensions, 3'-0" x 31-0" X 6", shall be poured around all valve boxes, unless otherwise directed by the City. I. Fire hydrants shall conform strictly to AWWA Standard Specifications for Fire Hydrants for Ordinary Water Works Service, C502 latest edition, except for changes or additions specifically outlined as follows: 1. Fire hydrants shall be placed on block corners or near the center of the block to place all of every lot within a radius of five hundred feet (5001) in residential areas, but under no circumstances shall a hose lay of more than six hundred feet (6001) be made from the fire hydrant to vocer all of every lot within the subdivision or tract under development. Where fire hydrants are placed in the interior of the bloc they shall be located in align- ment with a property line. -33- 2. Fire hydrants shall be located in commercial and industrial areas so that all of every lot shall be withing a radius of three hundred feet (3001), but under no circumstances shall a hose-lay of more than four hundred feet (4001) be made in order to adequately afford fire protection to the building or buildings. 3. All fire hydrants shall have one (1) pumper nozzle and two (2) hose nozzles with the City1s standard threads, shall have a main barrel valve opening of not less than five inches (5"), and shall be placed on connecting mains of not less than six inches (611) in diameter. Six-inch (611) gate valves shall be placed on all fire hydrants leads. 4. All fire hydrants shall be painted by the developer in accordance with the size of the water main constructed and/or according to the direction of the City. 5. The operating nut shall be designed to prevent seepage of rain or sleet and the accumulation of dust around the revolving nut. The operating nut shall conform to the standards now in use by the City. The hydrant valve shall open by turning to the left. 6. The hydrant top or bonnet shall be free draining and of a type that will maintain the operating mechanism in readiness to use under freezing conditions. It shall be so designed as to make tampering difficult and shall be provided with convenient means to afford lubrication to insure ease of operation and the prevention of wear and corrosion. 7. The body of the hydrant shall be equipped with a break- able flange, or a breakable cast-iron flange bolts, just above the grade-line. 8. All hydrants shall be of such design as will permit their extension without excavating in case of future grade changes. 9. The complete hydrant shall be of such design that when the hydrant barrel is broken through traffic collision, it may be replaced without excavating or breaking the pavement. The barrel and operating mechanism shall be so designed that in case of accident, damage or breaking of the hydrant above or near the grade level, the main valve will remain reasonably tight against leakage or floodijg. -34- 10. Changes in shape or size of the waterway shall be accomplished by means of easy curves. The junctions of hose or pumper nozzles with the barrel shall be rounded to ample radii. Exclusive of the main valve opening, the net area of the waterway of the barrel and foot piece of the smallest part shall be not less than 150 percent of that of the net opening of the main valve. 11. Hydrants shall be provided with an automatic and posi- tively operating, non-corrodible drain or drip valve so as to drain the hydrant completely when the main valve is shut. A drain valve operating by springs or gravity is not acceptable. 12. Operating stems whose threads are not located in the barrel or waterway shall be made of genuine wrought iron or steel and shall be bronze bushed where passing through the stuffing box. Operating threads must be sealed against contact with the water at all times regardless of open or closed position of main valve. All operating stems shall be coupled opposite the break flange with a breakable coupling or coupled in such a way as to part without breaking. 13. Unless otherwise specified by the City, hydrants shall be furnished with "0" ring seal s. 14. The hydrant head shall be constructed so that it may be rotated to face the nozzles in any desired direction. The developer shall rotate the fire hydrant in such a direction to best serve the City. 15. Hydrants shall close with the pressure and must have a bronze cap nut to seal the bottom end of stem threads against contact with water. 16. The developer shall furnish drawings with complete detailed dimensions of the hydrant proposed for the subdivision. The City Engineer and Fire Marshall shall then accept or disapprove the proposed fire hydrant. 17. Fire hydrants shall be placed at all locations shown in the plans. Each hydrant shall be set upon a slab of stone or concrete not less than four inches (4") thick and not less than one (1) square foot of surface area. Where solid rock exists in the bottom of the trench and same is excavated to the proper depth to form a founda- tion for the hydrant, the slab of stone or concrete aboce specified may be omitted. -35- The hydrant shall be set perpendicular, and to the proper depth, and shall be carefully and substantially blocked against firm trench walls using 2,OOO p.s.i. concrete as herein specified. There shall be placed around the base of the hydrant not less that seven (7) cubic feet of sound broken stone or clean gravel, or other suitable material, to provide reservoir capacity so that the hydrant will completely drain when closed. 18. The above mentioned fire hydrants in residential, commercial, and industrial tracts of real estate located in the City of Wylie shall be installed and operable prior to the erection of any building in which any combustible material is used as determined by the Fire Marshal of the City of Wylie, Texas. 19. The owner of any commercial or industrial property contemplated for development under this Ordinance on which fire hydrants and water mains shall provide easements to the City, whereby, the Fire, Police and Water Utilities Departments of the City shall have ready ingress and egress to, from, and across such property to any location on such property when necessary to extinguish a fire or to prevent the occurrence of a fire or to maintain, service and inspect such fire hydrants and water mains that may be installed or when such access to and from said property is essential to the preservation of life or property. J. The term "residential property" within the meaning of this Ordinance shall mean any tract of land developed for the purpose of single family or two-family domestic living, but not excluding educational or religious institutions. The term "Commercial tract" within the meaning of this Ordinance shall mean any tract of business or non- residential property and residential uses of including, but not limited to, multi-family complexes, residential attached, condo- miniums, religious, light and heavy industry, and all other classi- fications of properties other than single family residential; however, nothing herein contained shall be construed as limitations or repeal of the definitions set forth in the City's Fire Preven- tion Code. K. All changes in direction of water mains, plugs and special appur- tenance shall be blocked against undisturbed trench walls with 2,000 p.s.i. concrete in such a manner as to prevent movement of the pipe or appurtenance. L. A full size valve shall be placed at the dead end of any main. M. All pipe, fittings, valves, services, embedment materials, testing procedures, and other facilities related to the water system improvements shall be furnished and installed in conformance with the applicable specifications of A.S.T.M., A.W.W.A., and A.N.S.I., latest editions, or other regulations of the local, state, and federal agencies. 6.07 SANITARY SEWERS Sanitary sewer facilities shall be furnished and installed to adequately service the subdivision and shall conform with the City's Comprehensive Plan Report. -36- A. Materials Sanitary sewer mains may be vitrified clay sewer pipe (extra strength), conforming to ASTM C700, latest revision, or cement-lined bituminous coated ductile iron pipe or poly- ethylene-lined ductile iron pipe. As approved by the City, sanitary sewer mains may also be constructed of polyvinyl chloride (PVC) pipe conforming to the specifications of ASTM D 3034, SDR 35, or equal. Joints for the PVC pipe and fittings shall be compression rubber gasket joints. The bell shall consist of an integral wall section with factory installed ring securely locked in bell groove to provide positive seal under all installation con- ditions. Fittings and accessories shall be manufactured and furnished by the pipe supplier, or approved equal, and shall have bell and/or spigot configuration identical to that of the pipe. Connections shall be made with a fabricated fitting. Field glued connections are not allowed. When PVC pipe passes through a manhole wall, asbestos cement sleeves with a rubber ring joint shall be used to provide a positive water tight connection. The encasement, embedment, and backfill requirements for PVC pipe and vitrified clay pipe and ductile iron pipe shall conform to the standard details and specifications of the City of Wylie, Texas. B. Minimum Size Main The minimum diameter of sewer main shall be eight inches (8"). Six-inch (6") diameter sewer mains may be acceptable only for short distances (not to exceed 400 feet) and only in locations approved by the City, when the main is not to be extended. Minimum diameter for force mains shall be four inches (4"). C. Pipe Joints All vitrified clay sanitary pipe joints shall be of the pre- molded type conforming to ASTM Designation C425. D. Location Wherever feasible, the sewers shall be located in the alleys or easements and shall have a minimum of five feet (5') to six and one-half feet (6~') depth from ground surface to the invert. If necessary, they may be placed along the center-' line of the street. E. Alignment and Grades All sewers shall be laid in straight alignment where possible with a uniform grade between the manholes. In those cases where horizontal curvature must be utilized to serve a particular area, the minimum radius of curvature shall be -37- one hundred feet (100'). Grades and appurtenances of sanitary sewers shall conform to the requirements of the Texas Department of Health and the following are the minimum slopes which will be allowed; however, slopes greater than these are desirable. Sanitary Sewer - Diameter 4-inch (service lines) 6-inch 8-inch 10-inch 12-inch IS-inch 18-inch 21-inch 24-inch 27-inch 30-inch 36-inch Minimum Slope in Feet Per 100 Feet 1.000 0.500 0.400 0.280 0.220 0.150 0.120 0.100 0.080 0.067 0.058 0.046 F. Performance Tests Prior to the acceptance, newly constructed sanitary sewers shall be subject to leakage tests. The leakage outward or inward (exfiltration or infiltration) shall not exceed two hundred (200) gallons per nominal inch of the pipe diameter per mile per twenty- four (24) hours for any section of the system. G. Lift Stations All lift stations shall be designed and constructed with two or more sewage pumps, and the stations shall be capable of pumping the design maximum flow with the largest pump out of service. Detailed design data, plans, and specifications of the pumps shall be submitted to the City Engineer prior to the purchase and installation of the pumps. H. Force Mains Force mains may be ductile iron or polyvinyl chloride (PVC) and shall be designed with a cleansing velocity of at least two (2) feet per second which shall be maintained at minimum flow. Where necessary, automatic air relief valves shall be placed at high points in the force main to prevent air locking. Ductile iron pipe shall have Class 50 minimum thickness, rubber gasket joints, and a cement mortar lining with a seal coat of bituminous material or a polyethylene lining. Polyvinyl chloride (PVC) force mains shall meet the require- ments for water mains as described in Section 6.06, Paragraph F.1, and shall have adequate embedment. -38- 1. Manholes Manholes shall be of precast concrete ASTM C-76 pipe and be placed at points of change in alignment, grade, or size of sewer, the intersection of sewers, and the end of all sanitary sewer mains that will be extended at a later date. Maximum manhole spacing for sewers with straight alignment and uniform grades should be determined so as to assure continuous operation based on available cleaning equipment. The maximum manhole spacing shall be as detailed in the "Des i gn Standards II below. Manholes not set to have the ring encased in street or alley pavement, the ring shall be set in a six inch (6") thick reinforced concrete pad that shall extend at least fifteen inches (15") outside the ring. Manholes in creek areas or flood plains shall be extended at least two feet (21) above the twenty-five year (25) flood level or as required by the City. DESIGN STANDARDS Maximum Distance Sewer Pipe Size Manhole Diameter Between Manholes 6" 4'-0" 400 feet 8" 41-0" 650 feet 10" 4'-0" 800 feet 12" 41-611 900 feet 15" 41-6" 1,000 feet 18" 41-6" 1,100 feet 21" 51-0" 1,200 feet 24" 51-a" 1,300 feet 30" 5'-0" 1,500 feet 36" 61-0" 1,500 feet J. Cleanouts Standard cleanouts shall be constructed at the ends of all sanitary sewer mains that may not be extended in the future. K. Installation Procedures All pipe, manholes, cleanouts, embedments materials, testing procedures, and other improvements associated with the installation of the sanitary sewerage system shall be furnished and constructed in accordance with the applicable specifications of A.S.T.M., A.W.W.A. and A.N.S.I., latest edition and the regulations of the local, state, and federal agencies. 6.08 - UTILITY SERVICES A. All services for utilities shall be made available for each lot in such a manner so as to eliminate the necessity for disturbing the street and the alley pavement, curb, gutter sidewalks, and drainage structures when connections are made. B. The subdivider shall provide separate service lines for water and sewerage to each lot or point of metering. _ ':lQ_ C. D. E. F. G. H. 6.09 Water service lines shall be a mlnlmum of three-fourths inch (3/411) Type IIK'I copper and shall be provided with a corporation at the main and a curb stop located at least two feet (2') outside of curb with a final cover not exceed one and one-half feet (It'). Sanitary sewer service lines shall have a minimum dia- meter of four inches (411), shall meet the same require- ments for sanitary sewers described above, shall be constructed from the main to the lot property line using wyes and necessary bends, and shall have a min- imum final cover at the property line of four feet (4'), where possible. A sanitary sewer service line two-way clean out shall be placed on each service line at the property line to facilitate maintenance. The subdivider shall place a suitable marker at the point where said service lines are stubbed out so that these lines can be easily located for connection by the City. Suitable markers shall be IIW for water and I'SII for sewer stamped in top of curb or edge of pavement if no curb is constructed. Letters shall have a minimum height of two incher (211) and a minimum width of two inches (211). All water and sewer service lines shall be accurately located on the IIConstruction Record Drawingsll to be furnished to the City of Wylie. The subdivider shall make arrangements with all other appropriate utility companies for the extension of their respective utility lines and service to and within the addition and for any costs or refunds of such cost. The use of undergroud electrical services and trans- mission lines is encouraged for all subdivisions, where feasible. STREET LIGHTING Streetlighting shall conform to the latest edition of the III umi na t i on~ Errgineering Soc i ety Handbook. Round tapered standards with bracket arms shall be used and lighting levels, as recommended, shall be provided for very light traffic in residential areas, medium taraffic on collector streets, and heavy traffic on thoroughfares. Initial cost of installation of street lighting shall be borne by the subdivider -40- 6.10 - RECORD DRAWINGS (AS BUILT PLANS) Prior to the acceptance of the subdivision and within thirty (30) days of the completion of the subdivision, the engineer for the developer shall submit to the City a complete set of reproducible construction drawings (twenty- four (24) by thirty-six (36) inches) of the paving, drain- age, water, and sanitary sewer improvements with all changes made in the plans during construction and containing on each sheet an liAs Built" stamp bearing the signature of the engi- neer and the date. Within ten (10) days of the receipt of the "Record Drawings", the City Engineer shall make a recommendation for acceptance or non-acceptance of the subdivision to the City Council, and a determination of review cost and the receipt of the required maintenance bond. No final acceptance of the subdivision will be made by the City Council until these requirements have been made to the satisfaction of the City. SECTION 7 - FILING FEES AND CHARGES 7.01 A subdivider and/or developer is hereby required to pay the current fees, as established by the City Council through a separate ordinance, when any plat is tendered to the City Secretary for consideration by the Planning and Zoning Commi- ssion. Each of the required fees and charges shall be paid in advance and no action by the Planning and Zoning Commission, any official or employee of the City shall be valid until the fee or fees shall have been paid to the City official designated to receive said fee or fees. 7.02 - The fee shall be charged on all plats regardless of the action taken by the Planning and Zoning Commission and whether or not the City Council approves or disapproves the plat. 7.03 - Before commencing with construction, there shall be a fee paid to the City in accordance with the City's fee ordinance to cover the cost of quality control required by the standard specifications and performed by outside laboratories for quality control of the subdivision construction. SECTION 8 - MAINTENANCE BOND The subdivider shall furnish a good and sufficient maintenance bond or put in escrow an amount as detailed in the City's Fee Ordinance to indemnify the City against any repairs which may become necessary to any part of the construction work performed in connection with the subdivision, arising from defective workmanship or materials used therein, for a full period of one (1) year from the date of final acceptance of each phase of the project. Final acceptance of a sub- division or phase of a subdivision will be withheld until said maintenance bond is furnished to the City. SECTION 9 - EXTENSION TO EXTRATERRITORIAL JURISDICTION 9.01 - The Subdivision Ordinance of the City of Wylie, Texas, as it now exists or may hereafter be amended, is hereby extended to all of the area lying within the extraterritorial jurisdiction of the City of Wylie, Texas, and the rules and regulations within said Sub- division Regulations Ordinance governing plats, sub- divisions of land and construction of utilities shall be applicable to such area within said extraterritorial jurisdiction from and after the date of final passage of this ordinance. -42- 9.02 No person, corporation, partnership or other entity shall subdivide or plat any tract of land within the extraterritorial jurisdiction of the City of Wylie, Texas, except in conformity with the provision of this Subdivision Regulations Ordinance. SECTION 10. OTHER REQUIREMENTS 10.01 CHANGES AND VARIATIONS A. These rules and regulations are the standard requirements:of the City of Wylie, Texas. A suspension of any of these rules and regulations may be granted by the City Council, upon a showing that there are special circumstances of conditions affecting the property in question, that enforcement of the provisions of this Ordinance will deprive the applicant of a substantial property right, and that such suspension, if granted, will not be materially detrimental to thepubTic welfare or injurious to other property rights in the vicinity. B. The Wylie Zoning Ordinance provides for separation of residential areas from commercial or industrial areas by the erection of a sight barrier fence up to six feet (61) in height. The final plat for a proposed subdvision, in cases where there will be a separation of residential property from commercial or industrial property, shall indicate upon the final plat the location and height of proposed fences to be installed. 10.02 PENALTY Any person, firm or corporation who shall violate any of the provisions of this Ordinance or who shall fail to comply with any provision hereof shall be guilty of a misdemeanor and, upon conviction, shall be subject to a fine not to exceed two hundred dollars ($200.00), and each day that such violation continues shall constitute a separate offense and shall be punishable accordingly. -43- 10.03 - ALL CONFLICTING ORDINANCES REPEALED All ordinances and parts of ordinances inconsistent or in conflict herewith are hereby repealed. 10.04 - SEVERABILITY If any section or part of any section, paragraph, sentence or clause of this Ordinance is declared invalid or uncon- stitutional for any reason, such declaration shall not be held to invalidate or impair the validity, force, or effect of any other section or sections, part of section, paragraph, sentence or clause of the Ordinance. 10.05 - EFFECTIVE DATE This Ordinance shall become effective immediately upon its publication. Passed and adopted the 12th day of July, 1983.