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HomeMy WebLinkAboutOrdinance 0887 ORDINANCE NO. 887 BE IT ORDAINED BY THE CITY COUNCIL OF NORTH RICHLAND HILLS, TEXAS, that Ordinance No. 195 (Subdivision Ordinance) is hereby revised as follows: SECTION 1-03 A. GENERAL Add the following paragraph: A Preliminary (Or Overall) Plan of Development shall show all the planning factors necessary to enable the proper municipal approving authorities to determine whether the proposed plan for subdivision and development is satisfactory from the standpoint of public interest in order to produce a subdivision design in which all planning factors have been reconciled. The "Overall Plan of Development" shall be prepared by qualified professionals trained and experienced in subdivision design, and particularly shall include a drainage study by a registered professional engineer. D. FORM AND CONTENT Paragraph 10. Add the following paragraph: Any offsite or adjoining areas outside the limits of the area to be platted which are relevant to drainage shall have similar topography or otherwise shall be level surveyed to give reasonable verification of the limits of such offsite drainage areas, and all such offsite drainage areas shall be shown on the drainage plan. The datum for all topography shall be that of the United States Coast and Geodetic Survey with contours developed from field level surveys or from approved aerial photogrammetric interpretation of contours based on the proper control data. Topography shall be sUfficiently detailed to establish all drainage areas (and sub-areas) with accuracy of !lm;. Professionals with responsibility for accuracy of topography shall affix professional seal on the drainage plan along with a signed certificate of responsibility for the topography, and delineation of drainage areas. Paragraph 14: Add the following paragraph: The Preliminary Drainage Calculations for the proposed plan shall utilize the rational formula for drainage areas up to 750 acres in size and shall utilize the synthetic unit hydrograph or other approved method for areas larger than 750 acres. Such calculations shall include all run-off entering the plan area from adjoining higher ground, run-off originating within the plan area, and shall include the effect of disposing of all such run-off into recognized drainage ways. The Engineer performing the study shall affix his seal and certify compliance with the City's drainage requirements. PASSED AND APPROVED THIS 13th DAY OF Apri 1 / , 1981 . rx&A.--d,;,~ lICK FARAM, MAYOR - ATTEST: ~a,""z0 71l~ ~E MORE, CITY SECRETARY l/ _ AS TO ~~~t ~/ REX ENTIRE, CITY ATTORNEY , (C) Areas that have been filed of record but site improvements (other than excavation) that have not been commenced and are not under contract dated prior to passage of this Ordinance; applicable portions of Ordinance to apply, particularly all sections of Volumes II and III. --- (D) Areas filed of record and improvements commenced or under valid contract dated prior to passage of this Ordinance, prior existing Ordinances govern. PASSED AND APPROVED this day of t 1981, A.D., with an effective date of (month) (day) (year) SIGNED: MAYOR ATTEST: CITY SECRETARY 2 TABLE OF CONTENTS PAGE PROVIDING FOR ORDINANCE Conflict with Other Ordinances 1 Severability Clause 1 Effective Time and Status 1 VOLUME INDEX 3 SECTION 1-01 - GENERAL 4 Interpretation 4 Purpose 4 Definitions 4 Special Provisions 7 Improvements 9 Variances 9 SECTION 1-02 - SKETCH PLAN AND PRELIMINARY CONFERENCE 11 Sketch Plan 11 Preliminary Conference 11 Plate 1 - Sketch Plan 12 SECTION 1-03 - PRELIMINARY PLAN 13 General 13 Time and Place for Filing and Copies Required 13 Filing Fees 13 Form and Content 13 Plate 2 - Preliminary Plan 14 SECTION 1-04 - FINAL PLAT AND CONSTRUCTION PLAN 18 General 18 Time and Place for Filing and Copies Required 18 Filing and Inspection Fees 18 Form and Content 18 Plate 3 - Final Plat 18A Processing of Final Plat and Construction Plans 21 Issuance of Building Permits, Final Inspection and Acceptance 23 SECTION 1-05 - RE-PLATS 24 Ownership 24 Procedures 24 SECTION 1-06 - CITY-DEVELOPER AGREEMENTS 25 General 25 Water and Sewerage System 25 Street and Drainage Facilities 25 DEVELOPER - CITY AGREEMENT FORM 25A NOTARY FORM 26 SECTION 1-07 - CONTRACTING CONSTRUCTION 28 Procedure 28 City Participation CITY OF NORTH RICHLAND HILLS TEXAS SUBDIVISION REGULATIONS ***************************************************************************** VOLUME INDEX VOLUME I - SUBDIVISION ORDINANCE 1-01 General Interpretation, Purpose, Definitions 1-02 Sketch Plan and Preliminary Conference 1-03 Preliminary Plan 1-04 Final Plat and Construction Plans 1-05 Re-Plats 1-06 City-Developer Agreement 1-07 Contracting Construction VOLUME II - DESIGN CRITERIA AND STANDARDS 2-01 General 2-02 ~Ja te r 2-03 Sewerage 2-04 Streets 2-05 Drainage VOLUr1E I I I CONTRACT DOCUMENTS 3-01 General 3-02 Construction Plans 3-03 Notice to Bidders 3-04 Proposal 3-05 Contract 3-06 Bonds 3-07 Description of the Project 3-08 General Conditions 3-09 Special Conditions 3-10 Specifications VOLUr1E IV - FEE SCHEDULES At·1E N D ED VOLUME I - March 26, 1973 - Ordinance No. 462 VOLUME I - August 27, 1979 - Ordinance No. 773 VOLUME I - January 14, 1980 - Ordinance No. 793 VOLUME I - April 13, 1981 - Ordinance No. 887 VOLUME II - March 26, 1973 - Ordinance No. 463 VOLUME IV - May 14, 1979 - Ordinance No. 753 VOLUME IV - May 14, 1979 - Resolution No. 79-7 3 SECTION 1-01 GENERAL A. INTERPRETATION In the interpretation and application of the provlslons of these regulations, it is the intention of the City Council that the principles, standards and requirements provided for herein shall be minimum requirements for the platting and developing of subdivisions in the City of North Richland Hills, and, where other ordinances of the City are more restrictive in their requirements, such other ordinances shall control. B. PURPOSE The purpose of this Ordinance is to provide for the orderly, safe and healthful development of the area within the City and within the area surrounding the City and to promote the health, safety and general welfare of the community. C. DEFINITIONS For the purpose of this Ordinance, the following terms, phrases, words, and other derivations shall have the meaning ascribed to them in this section: Alley: A minor public right-of-way, not intended to provide the primary means of access of abutting lots, which is used primarily for vehicular service access to the back or sides of properties otherwise abutting on a street. Building Setback Line: The line within a property defining the minimum horizontal distance between a building or other structure over 24" high and the adjacent street line. f1~: The City of North Richland Hills, Texas. Commission: The Planning and Zoning Commission of the City. Crosswalk Way: A public right-of-way, four (4) feet or more in width between property lines, which provides pedestt'ian circu1at-ions. Cul-de-sac: A street having but one outlet to another street, and terminated on the opposite end by a vehicular tuY'n- around. 4 Dead-End Street: A street, other than a cul-de-sac, with only one outlet. En9ineer: A person duly authorized under the provisions of the Texas Engineering Registration Act, as heretofore or hereafter amended, to practice the profession of engineering. The term "City Engineer" shall apply only to such Registered Professional Engineer or firm of Registered Professional Consulting Engineers that has been specifically designated as such by Resolution of the City Council. Final Plat: (Also Record Plat or Filing Plat) The one official and authentic map of any given subdivision of land prepared from actual field measurement and staking of all identifiable points by a Registered or Licensed Surveyor with the subdivision location referenced to a survey corner and all boundaries, corners and curves of the land division sufficiently described so that they can be reproduced without additional references. Angular measurements and bearings shall be accurate to the nearest minute. Distances shall be accurate to the nearest tenth of a foot. Land Planner: Persons other than Surveyors or Engineers who also possess and can demonstrate a valid proficiency in the Planning of residential, commercial, industrial and other related developments; such proficiency often having been acquired by education in the field of landscape architecture or other specialized planning curriculum and/or by actual experience and practice in the field of land planning. Lot: An undivided tract or parcel of land having frontage on a public street and 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 as a distinct and separate tract, and which is identified by a tract or lot number or symbol in a duly approved subdivision plat which has been properly filed of record. Pavement Width: The portion of a street available for vehicular traffic. Where curbs are laid, it is the portion between the face of curb. Person: Any individual, association, firm, corporation, governmental agency, or political subdivision. Preliminary Plat: (Also Preliminary Development Study, Overall Plan of Development, etc.) The graphic expression of the proposed overall plan for subdividing, improving and developing a tract shown by superimposing a scale drawing of the proposed land division on a topographic map and showing in plan existing and proposed drainage features and facilities, street layout and direction of curb flow, and other pertinent features with notations sufficient to substantially identify the general scope and detail of proposed development. Shall, t1ay: The word "shall" is always mandatory. The word "may" is merely directory. 5 Sketch Plan: A sketch drawing of initial development ideas superimposed on a topographic map to indicate generally the plan of development and to serve as a working base for noting and incorporating suggestions of the City Manager, Commission, Engineer or others who are consulted prior to the preparation of the preliminary plat. Street: A public right-of-way, however designated, which provides vehicular access to adjacent land. (1) Major thoroughfares (also Arterial Streets, Primary thoroughfares, etc.) provide vehicular movement from one neighborhood to another, to distant points within the Urban Area or to Freeways or Highways leading to other communities. (2) Collector Streets (also Feeder Streets, Secondary thoroughfares, etc.) provide vehicular circulation within neighborhoods and from minor streets to major thoroughfares. Due to similarity to traffic volume and wheel loadings, streets through commercial and industrial areas are frequently constructed to same design as Collector Streets. (3) Local Residential Streets (also Minor Thoroughfares or Streets, etc.) are primarily for providing direct vehicular access to abutting residential property. Subdivider: Any person or any agent thereof, dividing or proposing to divide land so as to constitute a subdivision as that term is defined herein. In any event, the term "subdivider" 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. Subdivision: A division of any tract of land situated within the corporate limits, or within the extra-territorial jurisdiction of such limits, in two or more parts for the purpose of laying out any subdivision of any tract of land or any addition of any town or city, or for laying out suburban lots or building lots, or any lots and streets, alleys or parts or other portions intended for public use or the use of purchasers or owners of lots fronting thereon or adjacent thereto. Subdivision includes re-subdivision, but it does not include the division of land for agricultural purposes in parcels or tracts of five (5) acres or more and not involving any new street, alley or easement of access. Surveyor: A licensed State Land Surveyor or a Registered Public Surveyor, as authorized by the State statutes to practice the profession of surveying. 6 Utility Easement: An interest in land granted to the City, to the public generally, and/or to a private utility corporation, for installing and maintaining utilities across, over or under private land, together with the right to enter thereon with machinery and vehicles necessary for the maintenance of said utilities. Any office referred to in this Ordinance by title means the person employed or appointed by the City in that position, or his duly authorized representative. Definitions not expressly prescribed herein are to be construed in accordance with customary usage in municipal planning and engineering practices. D. SPECIAL PROVISIONS 1. No permit shall be issued by the City for the installation of septic tanks upon any lot in a subdivision for which a final plat has not been approved and filed for record, or upon any lot in a subdivision in which the standards contained herein or referred to herein have not been complied with in full. 2. No building, repair, plumbing or electrical permit shall be issued by the City for any structure on a lot in a subdivision for which a final plat has not been approved and filed for record, nor for any structure on a lot within a subdivision in which the standards contained herein or referred to herein have not been complied with in full. 3. The City Manager and the City Engineer may allow sectional development of an approved final plat provided that the section of the final plat meets all the requirements of this Ordinance in full as though it were a subdivision within itself. 4. The City shall not authorize any other person nor shall the City itself repair, maintain, install or provide any streets or public utility services in any subdivision for which the standards contained herein or referred to herein have not been complied with in full. 5. The City shall not authorize any other person nor shall the City itself sell or supply any water, gas, electricity, or sewerage service within a subdivision for which a final plat has not been approved or filed for record, nor in which the standards contained or referred to herein have not been complied with in full. 6. In behalf of the City, the City Attorney shall, when directed by the City Council, institute appropriate action in a court of competent jurisdiction to enforce the provisions of this Ordinance or the standards referred to herein with respect to any violation thereof which occurs within the City, within the extra-territorial jurisdiction of the City as 3uch jurisdiction is determined under the Municipal Annexation Act, or within any area subject to all or a part of the provisions of this Ordinance. 7 7. No street shall be more than 1,000 feet in length without an intersection with another street which will provide some degree of flexibility in traffic patterns and public convenience. 8. Street signs shall be paid for by the Developer at the rate established by the City Council at the time the final plat filing fees are paid. Developers shall pay cost at time of final platting for the installation of street name signs. 9. 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 Council of the City shall pass a resolution reciting the fact that such non-compliance or failure to secure final plat approval, and reciting the fact that the provisions of paragraphs 1, 2,4, and 5 of this Section will apply to the subdivision and the lots therein. The City Secretary shall, when directed by the City Council of the City, cause a certified copy of such resolution under the corporate seal of the City to be filed in the Deed Records of the County or Counties in which such subdivision or part thereof lies. If full compliance and final plat approval are secured after the filing of such resolution, the City Secretary shall forthwith file an instrument, in the Deed Records of such county or counties stating that Paragraph 1,2,4 and 5 no longer apply. 10. The provisions of this Section shall not be construed to prohibit the issuance of permits to any lots upon which a residence building exists and was in existence prior to passage of this subdivision ordinance, or to prohibit the repair, maintenance or installation of any street or public utility services for any residential building, or abutting any sale lot, the last recorded conveyance of which prior to passage of this Ordinance was by metes and bounds, and/or any subdivision, or lot therein, recorded or unrecorded, which subdivision was in existence prior to the passage of this Ordinance. 11. The City will not issue building permits, nor execute City/Developer agreements on any subdivision which remains substantially undeveloped four years or more from the date of final plat approval until a current engineering review of said plat has been conducted by the City Engineer and the plat has been re-approved by the City Council. Substantial development is hereby defined as 90% of sanitary sewage and storm drainage structures in place and accepted by the City and 80% of the lineal footage of paved streets in place and accepted by the City. Fees for the engineering review are hereby established at $50.00 plus $4.00 per acre, or $50.00 plus $1.00 per lot, whichever is greater. 8 E. It1PROVEMENTS The subdivider shall furnish, install and/or construct the water and sewerage systems and the street and drainage facilities necessary for the proper development of the subdivision. All such facilities shall be designed and constructed in accordance with Volumes II and III of this Ordinance. Where considered necessary by the City Engineer, the facilities shall be sized in excess of that dictated by the design criteria in Volume II to provide for future growth and expansion. The City Council shall establish policies whereby the City would participate in such oversized facilities provided funds are available. For public improvements bordering between or paralleling two tracts of land under different ownership and there is participation required by both owners, the developer desiring to plat his land first must do the following: Obtain the necessary right-of-way or easement from the adjoining property owner or owners and must have adjoining property owner or owners to formally agree to pay for his portion of the improvements, or the first developer must make the improvements at his own expense. If the property owners being asked to participate in the improvements refuses to participate then the City may take the necessary steps to obtain the right-of-way or easement. Any developer desiring to plat his land first will pay to the City all costs involved in obtaining the right-of-way or easement. The City may then through a City- Developer Agreement with the first developer desiring to plat his land agree to recover from the owner or owners of the adjoining property an amount equal to their share plus six (6%) per cent interest per year. The City will recover this amount at such time the adjoining owners are ready to develop their property. The amount to be recovered for the first developer will be stated in a City-Developer Agreement. It will also state if six (6%) per cent interest is to be recovered. F. VARIANCES The Planning and Zoning Commission may recommended and the City Council may authorize a variance from these subdivision regulations when, in its opinion, undue hardship will result from requiring strict complaince. In granting a variance, the Council shall prescribe only conditions that it deems necessary to or desirable in the public interest. In making the findings herein below required, the Council shall take into account the nature of the proposed use of the land involved, existing uses of land in the vicinity, the number or persons who will reside or work in the proposed subdivision, and the probable effect of such variance upon traffic conditions and upon the public health, safety, convenience and welfare in the vicinity. No variance shall be granted unless the Council finds: 9 1. That there are special circumstances or conditions affecting the land involved such that the strict application of the provisions of this Ordinance would deprive the applicant of the reasonable use of his land; and 2. That the variance is necessary for the preservation and enjoyment of a substantial property right of the applicant; and 3. That the granting of the variance will not be detrimental to the public health, safety or welfare, or injurious to other property in the area; and 4. That the granting of the variance will not have the effect of preventing the orderly subdivision of other land in the area in accordance with the provisions of this ordinance. Such finds of the Council, together with the specific facts upon which such findings are based, shall be incorporated into the official minutes of the Council meeting at which such variance is granted. Variances may be granted only when in harmony with the general purpose and intent of this Ordinance so that the public health, safety and welfare may be secured and substantial justice done. Pecuniary hardship to the subdivider, standing alone, shall not be deemed to constitute undue hardship. 10 SECTION 1-02 SKETCH PLAN AND PRELIMINARY CONFERENCE A. SKETCH PLAN Prior to the official filing of a preliminary plan, the subdivider shall avail himself of a copy of the Subdivision Regulations and should present a sketch plan, as shown on the following page, of the proposed subdivision to the City Manager for comments and advice on procedures, specifications and standards required by the City for the subdivision of land. Preparation and presentation of the sketch plan is not mandatory and no approvals, either tentative or final, will be given on sketch plans; however, their preparation is recommended as an economy measure to facilitate the inclusion of requirements and suggestions prior to going to the expense of designing and drafting the preliminary plan. B. PRELIMINARY CONFERENCE At the time the sketch plan is presented to the Public Works Director, a preliminary conference should be held for the general comments and clarifications which are usually necessary. At that time, the Subdivider should obtain copies of the City's Subdivision Regulations Volume I, for his reference, and Volumes II and III for the benefit of his engineer. 11 , ..) . - /- ) 7 ¡ \CL"P ì I J SECTION 1-03 PREL un NARY PLAN A. GENERAL The subdivider shall cause to be prepared a preliminary plan by a Surveyor, Engineer or Land Planner in accordance with this Ordinance and as shown on the following page. A Preliminary (Or Overall) Plan of Development shall show all the planning factors necessary to enable the proper municipal approving authorities to determine whether the proposed plan for subdivision and development is satisfactory from the standpoint of public interest in order to produce a subdivision design in which all planning factors have been reconciled. The "Overall Plan of Development" shall be prepared by qualified professionals trained and experienced in subdivision design, and particularly shall include a drainage study by a registered professional engineer. B. TIME AND PLACE FOR FILING AND COPIES REQUIRED The subdivider shall file twelve (12) blue or black line copies of the preliminary plan, with the Planning and Zoning Coordinator by the last working day of the month in order to be heard by the Planning and Zoning Commission on the fourth Thursday night of the following month. C. FILING FEES Such plan shall be accompanied by a filing fee as specified by City regulations. No action by the Commission shall be valid until the filing fee has been paid. This fee shall not be refunded should the subdivider fail to make formal application for preliminary plat approval or should the plat be disapproved. The deposit of such fees shall constitute formal request for plan approval. Filing fee schedule is included in Volume IV. D. FORM AND CONTENT The plat shall be drawn on sheets 36 inches wide and 22 or 24 inches high with a binding margin of not less than one and one-half (l-~) inches on the left side of the sheet. The plat shall be drawn to a scale of one hundred (100) feet to one (1) inch. Whenever the size is such that the full area cannot be covered on a single sheet with space for titles and other required identification, the plat may be drawn on a number of separate sheets with matching lines to facilitate joining them together as a continuous composite plat. Where more than one sheet is so used, they shall also be accompanied by photographic reductions of the various sheets reduced in scale and joined together to form a single overall composite of the plat on a sheet 36 inches wide and 22 or 24 inches high. The preliminary plat shall show the fo 11 O\^li ng : 13 n / 'IJ \ \ \ , \ 1. Names and addresses of the subdivider, record owner, engineer, and/or surveyor and/or land planner. 2. Proposed name of the subdivision, which shall not have the same spelling or be pronounced similar to the name of any other subdivision located within the City or within the extra-territorial jurisdiction of the City, unless subsequent filing of existing subdivision. 3. Names of continguous subdivisions and the owners of contiguous parcels of unsubdivided land, and show the platting of adjoining property if such be the case. 4. Description, by metes and bounds, of the subdivision boundary or locate the tract to be subdivided on a location map at scale of 1,000 or 2,000 feet to an inch, which shall show existing subdivisions, streets, easements, rights-of-way, parks and public facilities in the vi ci nity. 5. Two (2) spaces 2 inches high by 4 inches wide for stamping the Council and Planning and Zoning Commission endorsements of conditional approval. (See sample below). THE PLANNING AND ZONING COMMISSION OF NORTH RICHLAND HILLS ON (date 19 ) VOTED AFFIRMATIVELY TO RECOMMEND CONDITIONAL APPROVAL OF THIS PLAT, SUBJECT TO CONDITIONS ENU~1ERATED IN t'1INUTES OF THIS DATE. BY~ CHA I Rt1AN ATTEST: SECRETARY 6. Subdivision boundary lines, indicated by heavy lines, and computed in acreage of the subdivision. 7. Existing sites as follows: (a) The location and name of all existing or recorded streets, alleys, reservations, easements or other public rights-of-way within the subdivision, intersecting or contiguous with its boundaries or forming such boundaries. (b) The location, dimensions and name of all existing or recorded residential lots, parks, public areas, permanent structures and other sites within or contiguous with the subdivision. 15 7. (c) The location and flow line of existing water courses and drainage structures within the subdivision or on contiguous tracts. 8. The location, dimensions of all proposed streets, alleys, drainage, structures, parks, other public areas, reservations, easements or other rights-of-way, blocks, lots and other sites within the subdivision. 9. Date of preparation, scale of plat and North arrow. 10. Topographical information shall include contour lines on a basis of five (5) vertical feet in terrain with a slope of two (2) per cent or more and on a basis of two (2) vertical feet in terrain with a slope of less than two (2) per cent. Any offsite or adjoining areas outside the limits of the area to be platted which are relevant to drainage shall have similar topography or otherwise shall be level surveyed to give reasonable verification of the limits of such offsite drainage areas, and all such offsite drainage areas shall be shown on the drainage plan. The datum for all topography shall be that of the United States Coast and Geodetic Survey with contours developed from field level surveys or from approved aerial photogrammetric interpretation of contours based on the proper control data. Topography shall be sufficiently detailed to establish all drainage areas (and sub-areas) with accuracy of ±10%. Professionals with responsibility for accuracy of topography shall affix professional seal on the drainage plan along with a signed certificate of responsibility for the topography, and delineation of drainage areas. 11. A number or letter to identify each lot or site and each block. 12. Front building setback lines on all lots and sites. Side yard building setback lines at street intersections and crosswalk ways. 13. Where the proposed subdivision constitutes a unit of a larger tract owned by the subdivider, which is intended to be subsequently subdivided as additional units of the same subdivision, the preliminary and final plats shall be accompanied by a layout of the entire area showing the tentative proposed layout of streets, blocks, drainage, water, sewerage, and other improvements for such areas. The overall layout, if approved by the Commission, shall be attached to and filed with a copy of the approved subdivision plat in the permanent files of the City. Thereafter, plats of subsequent units of such subdivision shall conform to such approved overall layout, unless changed by the Commission. 14. The preliminary calculation of drainage areas and run-off in c.f.s. showing design frequency and criteria for run-off. 16 The Preliminary Drainage Calculations for the proposed plan shall utilize the rational formula for drainage areas up to 750 acres in size and shall utilize the synthetic unit hydrograph or other approved method for areas larger than 750 acres. Such calculations shall include all run-off entering the plan area from adjoining higher ground, run-off originiating within the plan area, and shall include the effect of disposing of all such run-off into recognized drainage ways. The Engineer performing the study shall affix his seal and certify compliance with the City's drainage requirements. E. PROCESSING OF PRELIMINARY PLAN 1. Upon receipt of the Preliminary Plan and the required filing fees, the Public Works Director or the designated subordinate, shall check the preliminary plan as to its conformity with the City's Comprehensive Plan, Land Use Plan, Zoning Districts, lot size requirements, subdivision and street names and other applicable City standards. 2. The Planning and Zoning Coordinator shall refer one (1) copy of the Preliminary Plan to the City Engineer who will check same for conformity with applicable engineering standards and specifications set forth herein as well as with generally accepted engineering principles when not covered specifically herein. The City Engineer shall return the plan to the Planning and Zoning Coordinator with his suggestions as to modifications, additions, alterations or other matters pertinent to the plat. This will be sent to the owner and Engineer of plat for correction. The Planning and Zoning Coordinator shall send copy to all utility companies to see if they need easements. 3. At the regularly scheduled Planning and Zoning Commission meeting stipulated in Section 1-03-B, the Planning and Zoning Commission shall act on the plan, if all requirements are completed. 4. Unless at least a portion of the area covered by the Preliminary Plan is approved in final plat form within one (1) year from the date of approval of the preliminary plan by the Commission, preliminary automatically becomes null and void and must be resubmitted as if no preliminary plan were in existence. The Preliminary Plan for any area which has not been platted in final form within three (3) years from the date of the approval of the preliminary plan shall be null and void unless a time extension is granted by the Planning and Zoning Commission after its review of the Plat. No additional filing fees shall be required for this extension. 17 SECTION 1-04 FINAL PLAN AND CONSTRUCTION PLAN A. GENERAL No subdivision of land shall be accomplished without proper submittal, approval and adoption of a final plat prepared by an Engineer in accordance with this Ordinance and as shown on the following page. All final plats must first be preceded by properly prepared and approved preliminary plans, except in areas previously platted and filed of record, in which case, existing lots may be increased in size by combining all parts of adjacent lots provided no fragments of lots remain alone causing a reduction in the lot size to less than minimum required by the zoning of the particular area. B. TIME AND PLACE FOR FILING AND COPIES REQUIRED The subdivider shall file twenty-six (26) blue or black line copies of the plat together with the construction plans, plus one (1) mylar and one (1) sepia with the Planning and Zoning Coordinator by the last working day of the month to be heard by the Planning and Zoning Commission on the fourth Thursday of the following month. C. FILING AND INSPECTION FEES When the final plat is filed with the Planning and Zoning Coordinator for consideration and adoption, it shall be accompanied by a filing fee as specified by City regulations. The deposit of such fees shall constitute formal request for plat approval. D. FORM AND CONTENT 1. The final plat and accompanying data shall conform to the preliminary plan as conditionally approved by the Commission incorporating any and all changes, modifications, alterations, corrections and conditions imposed by the Commission. 2. The final plat shall be drawn in permanent ink on linen tracing cloth sheets not larger than 36 inches wide and 22 or 24 inches high and a margin not less than one and one-half (1-~) inches on the left side of the sheet. The plat shall be drawn at a scale of 100 feet to one (1) inch. Where more than one sheet is necessary to accommodate the entire area, an index sheet showing the entire subdivision at appropriate scale shall be attached to the plat. 3. If desired by the subdivider and approved by the Commission, the final plat may constitute only that portion of the approved preliminary plan which he proposes to record and develop; however, such portion shall conform to all the requirements of this Ordinance. 4. In addition to the various requirements for the preliminary plan, the final plat shall also include the following: 18 :'" ( (\\~ j r ----..J (a) The exact location, dimensions, name and description of all existing or recorded streets, alleys, reservations, easements, or other public rights-of-way within the subdivision, intersecting or contiguous with its boundary or forming such boundary, with accurate dimensions, bearings or deflecting angles and radii area, and central angle, degree of curvature, tangent distance and length of all curves where appropriate. (b) The exact location, dimensions, description and name of all proposed streets, alleys, drainage, rights-of-way, parks, other public areas, reservations, easement or other rights-of-way, blocks, lots and other sites within the subdivision with accurate dimensions, bearing or deflecting angles and radii area, and central angles, degree of curvature, tangent distance and length of all curves where appropriate. (c) Owner's acknowledgement and dedications. (See Sample Below) (d) Surveyor's Certificate'for Plat (See sample below) and Engineer's certificate for construction plans. (e) A space two (2) inches high and four (4) inches wide for stamping the Planning and Zoning Commission's endorsement. (See Sample Below) (f) A space two (2) inches high by four (4) inches wide for stamping the City Council's endorsement. (See Sample Below) STATE OF TEXAS COUNTY OF ) ) OWNER'S ACKNOWLEDGEMENT AND DEDICATION I (we), the undersigned, owner(s) of the land shown on this plat within the area described by metes and bounds as follows: (Metes and Bounds Description of Boundary) and designated herein as the subdivision to the City of North Richland Hills, Texas, and whose name is subscribed hereto, hereby dedicate to the use of the public forever all streets, alleys, parks, water courses, drains, easements, rights-of-way and public places thereon shown for the purpose and consideration therein expressed. Owner 19 STATE OF TEXAS COUNTY OF BEFORE ME, the undersigned appeared person whose name is subscribed to the acknowledge to me that he executed the considerations therein stated. authority, on this day personally , known to me to be the foregoing instrument, and same for the purposes and Given under my hand and seal of office this 19 day of NOTARY PUBLIC County, Texas STATE OF TEXAS COUNTY OF ) ) CERTIFICATE OF SURVEYOR WHO PREPARED PLAT I, the undersigned, a (registered public ~urveyor/licens~d land surveyor) in the State of Texas, hereby certify that this plat is true and correct and was prepared from an actual survey of the propery made under my supervision on the ground. (Surveyor's Seal) Registered Public Surveyor or Licensed Land Surveyor 20 THE PLANNING AND ZONING COMMISSION OF NORTH RICHLAND HILLS ON (date) ,19, VOTED AFFIR~1ATIVEL Y TO RECOt1MEND ADOPTION OF THIS PLAT BY THE CITY COUNCIL BY: THE CITY COUNCIL OF NORTH RICHLAND HILLS ON , 19 VOTED AFFIRMATIVELY TO ADOPT THIS PLAT AND APPROVE IT FOR FILING OF RECORD. BY: CHAIRt1AN r·1A YOR ATTEST: ATTEST: SECRETARY CITY SECRETARY Recommend Adoption by Planning and Zoning Commission. Statement of Adoption by Council. (g) Complete construction plans shall be submitted for all street and drainage improvements, alleys, and side- walks, if any, and other improvements to be performed. These plans shall be submitted on standard 24 inch by 36 inch sheets. Street, alley, sidewalk and storm sewer plans shall be presented on plan and profile sheets and platted to the scale of one (1) inch equals either 40 feet or 100 feet horizontal, and one (1) inch equals either 5 feet or 10 feet vertical. The plan portion of these shall show the right-of-way of intersecting streets. The street profiles shall show the existing ground and proposed ground lines at five (5) points of the cross-section, including at the centerline of the street, the back of curb lines, and the property lines. Typical cross-sections shall be shown for the streets showing the type and width of pavement proposed for the streets. Detailed plans shall be submitted for any bridges, culverts, catch basins, any other drainage structures, or any other improvements to be made. Design Standards of the City in effect at the time of submission of the plan shall be used, subject to the approval of the City Engineer and/or the City r-1anager. E. PROCESSING OF FINAL PLAT AND CONSTRUCTION PLANS 1. Upon receipt of the final plat with construction plans and the required filing fees, the Public Works Director or his designated subordinate shall check the plat as to its conformity with the City's Comprehensive Plan, Land Use Plan, zoning districts, lot size requirements, subdivision and street names and other applicable City standards. 21 2. The Planning and Zoning Coordinator shall transmit one (1) copy of the final plat and construction plans to the City Engineer who will check same for conformity with applicable engineering standards and specifications setforth herein as well as with generally accepted engineering principles when not covered specifically herein. The City Engineer shall return the plan to the Planning and Zoning Coordinator with his suggestions as to modifications, additions, alterations or other matters pertinent to the plat. This will be sent to the owner and engineer for correction. 3. At the regularly scheduled Planning and Zoning Commission meeting stipulated in Section 8-B, the Planning and Zoning Commission shall act on the plat and, if all requirements are completed, shall then forward same to the City Council with its recommended approval, disapproval or conditional approval with enumerated conditions. 4. After approval and adoption of the final plat and plans by the City Council and the endorsement of the Mayor attested by the City Secretary, have been placed on the plat, the plat shall be sent for recording then retained by the Planning and Zoning Coordinator until after the subdivider has delivered to the Public Works Director three (3) properly executed copies of the City-Developer Agreement as contained herein. The City-Developer Agreement shall then be executed by the Mayor and City Secretary and one (1) copy, along with the original linen tracing of the plat shall be returned to the subdivider. One (1) other copy of the agreement with plat attached shall be transmitted to the City Engineer and the third copy shall be retained by the Planning and Zoning Coordinator in the permanent City files. 5. The approval and adoption of the final plat shall be valid only if filed of record within one hundred eighty (180) days after the date of approval and adoption by the City Council. Thereafter, the subdivider must obtain an extension of time from the Planning and Zoning Commission if he wishes to file the plat and such extension may be either granted or denied by the Commission at their option. Upon filing the plat in the County Records, the Developer shall have two (2) photostatic copies made by the County Recording Clerk on standard 18 inch by 25 inch sheets showing the Volume and Page where filed, both copies to be mailed or delivered to the City Manager. One (1) copy will be placed in the permanent plat record book at the City Hall and the other will be furnished to the City Engineer. 22 1- F. ISSUANCE OF BUILDING PERMITS, FINAL INSPECTION AND ACCEPTANCE 1. Building Permits shall be issued on a subdivision tract only after the City Manager has received the copies of the Recorded Plat as stipulated in E-5 above and as provided for in Section 1-01, Paragraph D-3, Page 7. Final inspection will not be given on any structure in a subdivision unless all street and drainage facilities as shown on the approved plans are complete in place and accepted by the City for ownership and maintenance. 2. The City will not accept any street, sidewalk, drainage or other facility for maintenance until an acceptable two (2) year maintenance bond for all facilities in said subdivision or approved section of said subdivision has been presented to the City. 23 .... SECTION 1-05 RE-PLATS A. OWNERSHIP In order to re-plat a tract of land for which a final plat is filed of record in the Plat Records of Tarrant County, the tract must be either (a) fully owned by the person desiring to re-plat, or (b) the person desiring the re-platmust furnish the City the written acknowledgement and consent by all other property owners. B. PROCEDURES The procedure for re-platting shall be the same as for subdividing as stipulated by this Ordinance except the Planning and Zoning Coordinator should be furnished 32 copies instead of 26 for a final. In addition the following persons and agencies must acknowledge to the City, in writing, that they have knowledge of the re-plat and they have no objection thereto: 1. All utility companies which furnish the City with water, gas, electric, telephone and television cable service. Such written acknowledgement must be in the hands of the Planning and Zoning Coordinator prior to the submission of the replat to the City Council for approval. 24 SECTION 1-06 CITY-DEVELOPER AGREEMENTS A. GENERAL After the City Council has approved the filing plat, but prior to the City Manager furnishing the Developer the signed plat, the Developer shall deliver to the City Manager the executed agreements stipulated herein. The forms for these agreements shall be furnished by the City to be properly completed and executed by the Developer. B. WATER AND SEWERAGE SYSTEM The Developer shall furnish the City a copy of an executed "Developer-City Agreement" executed by the Developer and the City, which will assure the City that all water and sewer facilities will be constructed as shown by the approved plans and in accordance with the criteria contained in Volume II and water policies. II C. STREET AND DRAINAGE FACILITIES The Developer shall execute the form on the following page in three (3) copies. Special provisions shall be inserted in the agreement only if such provisions were approved by the City Council at the time of approval of the Final Plat or subsequent to that approval. 25 CITY-DEVELOPER AGREEMENT THE STATE OF TEXAS THE COUNTY OF I I KNOW ALL MEN BY THESE PRESENTS: of . an individual D.B.A. (or) a Corporation organized under the laws (or) a Partnership consisting of of the County of . hereinafter called Developer. and the City of North That State of Rich1and Hills, Tarrant County. Texas, hereinafter called City. enter into the following contract: In consideration of the mutual covenants herein contained and for the purpose of providing increment{s) of the to Addition to the City of North Richland Hills. Texas, as filed of record in Volume . Page of the Plat Records of Tarrant County, Texas. (or if not yet filed, as shown on the plat attached hereto) the parties hereto do agree: 1. The Developer agrees to pay the City an inspection and processing fee in the amount of % of the construction cost of the _ ',. facilities required to serve his subdiVision, J and in addition. at no cost to the City, to have complete construction plans, specifications and other Contract Documents, prepared by a registered professional engineer who will also furnish construction layout, cut sheets and field adjustments; 2. The Developer agrees to furnish all permits, easements, right-of~ay or other sites necessary for the project at no cost to the City, or to reimburse the City for all costs incurred if such items are acquired by the Ci~. and to abide by all properly approved rules and regulations of the City of North Richland Hills. 3. The Developer agrees to post with the City a cash deposit to be placed in escrow or an "Irrevocable Conmerc1al letter of Credit" in the amount equal to the total construction cost, and the City will enter into Contract with a Contractor who will perform the work and be paid by the City from the deposit or letter of credit posted by the Developer. 25-A 4. Developer understands and agrees that he has no authority to cancel. al teror amend the terms of the construction contract without specific written authority of the City and that he shall be responsible for paying the costs of any cancellations. alterations. or amendments to the Contract unless specifically provided otherwise by written authorization from the City. 5. The City will participate in the cost of oversizing portions of the facilities as follows: 6. The Developer will be eligible for refunds in accordance with standard policy of the City on "Boundary II and/or IIOff-Site" facilities as follows: 7. The City will provide the inspections as required and upon satisfactory completion of the work. the City will accept owhership and operation of the sys tern. 8. Upon completion of the work good and sufficient title to all facilities constructed warranted free of any liens or encl8l1berances is hereby vested in the City of North Richland Hills. 9. Special provisions: IN WITNESS WHEREOF. the parties to these presents have excuted this Contract in five (5) counterparts. each of which shall be deemed an original on this the day of .19 ~VELOPER (SEAL) BY ATTEST: CITY CITY SECRETARY BY 26 ~ THE STATE OF TEXAS COUNTY OF I I BEFORE ME, the undersigned authority, on this day personally appeared known to me to be the person whose name is subcribed to the foregoing instrument, and acknowledges to me that he executed the same for the purposes and considerations therein expressed. GIVEN UNDER MY HAND AND SEAL OF OFFICE THIS DAY OF A.D., 19 NOTARY PUBLIC COUNTY, TEXAS 27 SECTION 1-07 CONTRACTING CONSTRUCTION A. PROCEDURE After the City executes the City-Developer Agreement for the subdivision, construction may begin on the water, sewerage, street and drainage facilities required by the plans. All construction shall be in accordance with the applicable sections of Volume III of this Ordinance and shall conform to the plans approved by the City Council. Construction on such improvements may be performed by a bondable contractor of the developer's choice. B. CITY PARTICIPATION In any contract where, by reason of City policy, the City Council deems it advisable to participate in the community facilities being constructed to the extent of $2,000 or more, the contract for such construction shall always be advertised for bids in accordance with the City's Charter and shall be a contract between the Contractor and the City. In this case, the Developer shall deposit his estimated portion of the funds necessary with the City prior to beginning construction and the City shall administer the project. To accomplish this end, the Developer's engineer shall prepare the contract documents for execution between the City and the Contractor, and shall furnish the city with twenty (20) sets of such Documents for bidding purposes. 28 SECTION 2-01 GENERAL A. PURPOSE This Volume II of the Subdivision Regulations for the City of North Richland Hills is primarily intended for the use of the Developer's Engineer to enable him to design the required community facilities in a manner acceptable to the City. There may be special circumstances which would dictate requirements in excess of those outlines; however, in most cases, these exceptions will be apparent to the Developer's Engineer while preparing the plans for the subdivision. 29 l SECTION 2-02 WATER SYSTE~1 A. Wate~ System Extensions Water system extensions shall be designed to provide for a domestic supply of at least 250 gallons per capita per day delivered at a minimum pressure of 42 pounds per square inch. The 250 gallon rate of supply shall not be required if, in the opinion of the City's Engineer, the proper point of connection to the existing system for the extension is not capable of supplying such a volume. However, the extension should be designed to convey the 250 gallon rate should the supply point be subsequently improved. If the 42 pounds minimum pressure cannot be provided by existing system pressure or because of the elevation of the tract to be developed, a booster pump shall be included which will provide that minimum pressure. B. All Supply and Distribution Mains All supply and distribution mains installed within a subdivision must extend to the borders of the subdivision as required for future extensions of the system, regardless of whether or not such extensions are required for service within the subdivision. C. Fire Hydrants Fire hydrants shall be provided at locations such that all areas of single family development are located within a five hundred (500) foot radius from a fire hydrant or all such hydrants will be placed so that hose line routes will be more than eight hundred (800') feet by public right-of-way. In the areas other than single family development fire hydrants shall be on a three hundred (3001) foot radius. All such fire hydrants shall be served by a six (6") inch or larger supply or distribution main. D. Water Service Connections (This paragraph is deleted.) E. Two (2") Inch Mains (This paragraph is deleted.) F. f\ll ~1aterials and Workmanship (This paragraph is now "D") All materials and workmanship incorporated in water system extensions shall be in accordance with the currently adopted City Construction Specifications. 30 SECTION 2-03 SEWERAGE SYSTEM A. SEWERAGE SYSTEM EXTENSIONS All subdivisions developed subsequent to this ordinance must be served by community sanitary sewerage collection, treatment and disposal systems approved by the City with exceptions granted only if all of the following conditions exist: (1) The subdivision in question is less than five parcels of land, (2) The existing community type collection, treatment and disposal system is not and cannot feasibly, in the opinion of the City's Engineer, be made available to the area of development and (3) Percolation tests run by an independent testing laboratory are submitted to both the City and County Health Department with results showing that a septic tank and spreader field can be developed to provide adequate disposal of the sewage. Where septic tank installations are permitted in lieu of a sanitary sewerage system, the plat must provide for dedicated alleys not less than 20 feet in width adjacent to all lots to facilitate the future installation of a sewerage system. Dedication of such alleys shall prohibit fencing or other obstructions that would interfere with the future installation of the sewers. B. SEWER EXTENSIONS All sewer extensions shall be designed in accordance with the latest applicable rules and regulations as published by the Texas Department of Health Resources. No sewer lateral shall be smaller than six (6") inches in nominal diameter. All sewers shall be designed with consideration for serving the full drainage area subject to collection by the sewer in question except as modified with the concurrence of the City's Engineer because of the projected rate of development of the proposed extension. C. POPULATION EQUIVALENT In determining the population equivalent for design purposes, undeveloped areas shall be estimated at not less than 9.5 persons per acre. The contributing sewage flow shall be estimated on the basis of an average flow of 100 gallons per person per day plus infiltration of 1500 gallons per acre per day. The peaking factor for outfall sewers shall be determined as: Peaking factor = 1 + 14 4 + V P = population in thousands P 31 All sewers shall be designed with hydraulic slopes sufficient to give mean velocities, when flowing full or half full, of not less than two (21) feet per second nor more than five (51) feet per second based on Kutter's or t1anningls formulas using an "n" value of 0.013. Sewers shall be designed in straight alignment wherever possible. Where horizontal curvature must be used, the smallest radius shall be one hundred (100') feet. Manholes shall be constructed at all changes in grade, alignment or size of sewer and at all other intersections of other sewers except service sewers and at the ends of all sewer lines that will be extended. Intersecting sewers shall enter the manholes at the crown line or top of the main sewer and the inverts of all manholes shall be formed concave to fit the connecting sewer pipe. D. LATERAL AND SEt4ER r1AINS All lateral and sewer mains installed within a subdivision must extend to the borders of the subdivision as required for future extensions of the collecting system regardless of whether or not such extensions are required for service within the subdivision. E. LIFT STATIONS OR SEPARATE TREATf.1ENT FACILITIES The provision for lift stations or separate treatment facilities will not be premitted unless the cost of constructing such lift stations or separate facilities is at least thirty (30%) per cent less than the cost of constructing an adequate outfall or approach sewer from the existing system. F. CONNECTIONS No connection shall be made to any sanitary sewerage system within the City which will permit the entrance of surface water or waste of other than domestic sewage characteristics without the specific authorization by the City Council. G. MATERIALS AND WORKMANSHIP All materials and workmanship incorporated in the sewage system extensions shall be in accordance with the currently adopted City Construction Specifications. II 32 SECTION 2-04 STREETS A. STREET WIDTHS Street widths for all subdivisions shall be 31' from back of curb to back of curb on residential sections. All streets which are not governed by one of the following conditions shall be considered residential for width design: (1) Designated as a collector or thoroughfare by the City's Comprehensive Plan. Where a street is designed as a collector of a thoroughfare by the City's Comprehensive Plan, the City will participate in single family residential areas only. The City will only participate on streets in excess of thirty six (36') foot width, to the extent of all cost in excess of those for a street width deemed as necessary for traffic patterns in area in question as determined by the City Engineer and City Manager. (2) Adjacent to commercial or multi-family land use where, in the opinion of the City's Engineer or the City's Planner, additional street width is indicated for proper access and circulation. Where the land use dictates additional strength design or wider street section, no City participation is provided. (3) Where, in the opinion of the City Administration or in the opinion of the Developer with the concurrence of the City Administration, the esthetic value achieved from extra width is dictated by special conditions. Where the City requires additional width for esthetic value or other special conditions, the City will participate to the same extent as 2-04 A(l). Where this additional width for esthetic, or other special reasons, is at the request of the Developer, no participation is provided. In the case of (1) above, the section to be constructed shall be in accordance with the Comprehensive Plan or a revision thereof based on updated conditions. In the case of (2) and (3), each condition will be studied individually and approved by the City prior to approval of the subdivision in question. B. STREET SECTION The standard street section to be used for all residential and collector type streets is shown on the following page. However, when triaxial tests of soil of a proposed street are 4.1 or less, 4 inches of H.M.A.C. on 6 inches of lime stabilized subgrade is sufficient. Test program to be approved by the City Engineers. All thoroughfare type streets shall be designed by the City Engineer based on projected loadings and conditions present. 33 F ( l:' l~ ( I ...-"..-...-" I , Yp . / ' I ( It C . I :1 Lr c ( -r I (~ ! I . IC l t- ~ C. SUBGRADE TESTING The Developer shall be required to furnish a minimum of two (2) laboratory tests for each apparent soil type in each block and stating the amount of lime application required for treatment of the subgrade. Should these tests or other observations by the laboratory, the Developer's engineer, the Contractor or the Owner's project representative indicate that a satisfactory subgrade is not thus being obtained, the Developer's engineer and the lab shall then submit their proposed corrective measures for consideration by the City Engineer. Group Index 0 to 4 --- Excellent to Good Group Index 4 to 12 -- Fair Group Index Over 12 -- Poor Determination of group index shall be made by use of the charts on the following page. A sufficient number of tests shall be preformed by an independent testing laboratory, in the opinion of the City Engineer, to show the quality of the subgrade throughout the subdivision. Where other conditions apart from the physical properties indicate a special problem such as springs or seepages, drastic material changes from point to point, etc., appropriate studies shall be furnished by a Registered Professional Engineer to indicate the corrective measures needed. D. SUBGRADE TREAMENT All streets shall be assumed to have poor subgrades unless and until the Developer furnished actual test data prepared by an independent testing laboratory sufficient in the opinion of the City to show that the subgrade is of a higher quality. Such data shall include, but is not necessarily limited to: Liquid Limit, Plasticity Index and Percent Passing No. 200 Sieve. Classification of the subgrade for evaluating the supporting qualities shall generally apply to the top 6" layer of soil measured down from subgrade surface. In all cases, the requirements set forth in this criteria are minimum and the City reserves the right to require further additional precautions or treatments consistent with sound engineering practice when necessary to provide for other conditions not specifically covered by this criteria. The approved standard street sections for each street type, with variations depending upon subgrade support qualities are as shown on the detail sheets attached. Where more than one section is permitted for a given subgrade condition, the choice of standard design to be used will generally be left to the option of the Developer. Subgrade supporting qualities may in some cases be upgraded by lime, cement, sand or other admix stabilization as approved by the City, based upon suitable laboratory data furnished by the Developer, in which case the selection of street section may be based upon the improved subgrade. 35 L-; 'L () () ('-') I f.-) [) L: Y ':) C -) c::-' " l I (.\ ()' t' I -' r~ SECTION 2-05 STORM DRAINAGE A. METHOD OF CALCULATION OF RUN-OFF Storm water run-off for drainage basins up to 750 acres in size shall be computed by the rational method which is an analysis of the run-off problem for each drainage area along rational lines and includes the analysis of the flow of storm water from the surface on which it falls to the inlet that leads to the storm sewer and then through the storm sewer, culvert, and/or channel to the point of disposal. The formula for calculation of run-off by the rational method is Q = CIA. For drainage basins larger than 750 acres in size, the synthetic unit hydrograph or other approved methcd shall be used. Specific formulas and graphs for constructing the unit hydrograph are available from the City Engineer. where Q = the maximum rate of run-off discharge expressed as cubic feet per second C = a run-off coefficient which varies with the topography, land use and moisture content of the soil at the time the run- off coefficient shall be based on the ultimate use of the land as recommended by the r1aster Plan for the City and shall be selected from Table I below Business areas 0.80 Industrial areas 0.75 Residential areas 0.50 Park areas 0.30 I - Rainfall intensity in inches per hour from the applicable curves of Figure 1. Time of concentration or duration of rainfall for use in Figure 1 shall be calculated by data shown in Table II. A - The drainage area, in acres, tributary to the point under design calculated from the drainage map of the area. This drainage map shall be submitted with any drainage plans submitted for consideration by the City. 37 TABLE II Description of ~Jater Course 0% to 3% V. in Lp.s. Velocity of Run-off in F.P.S. For Slope in Percent 4% to 7% V. in f.n.s. 8% to 11 % V. in f.p.s. over 12% V. in f.p.s. Surface Drainage 5 10 15 18 Channels Determi ne V by t1anni ngs Formul a Storm Sewers Determine V by t1annings Formula Average velocity of the run-off for calculating time of concentration or Duration of Rainfall for use in Figure 1. These average velocities in this table shall be used unless the designer shows calculation of velocities by streets using the gutter velocities as follows: % Slope of Gutter 0.4% 1.0% 2.m& 3.0% 4.0% 5.0% 6.m& 8.0% 10.m& Assumed Velocity - Ft./Sec. 1.4 2.2 3. 1 3.8 4.3 4.9 5.3 6. 1 6.9 Using the average velocities from this table the designer shall calculate the time of concentration by the following formula unless more data is shown on the plans for calculating time of concentration. T = "Inlet Time" + D where: VX'6O T = Time of concentration in minutes for use in Figure 1. D = Distance in feet from point of concentration to upper end of drainage area under consideration. V = Velocity in feet per second from this table or velocity calculated by designer by streets and/or storm sewers. 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I"i::¡'-: '( "I 6 7 8910 15 20 30 40 50 607080901001 200 I I I 500 I 10 MUIUTE$ I 2 3.. 5 6 I? ~ .- HOURS DURATION t" ., ..!..:-- ,_. .. .." . . - I. . .'. r++ 3UW+. ::. .. . '. f' 'vi . : - , . ~~~~.J . . ~ ... '.". :;·:--~·--~~-:::·1 :. '::. ~ .. ...1 ----~ . .. ~ .-..--. .. ~. . . : -:. :::-:.- . :.i~:; ~ :~~. :~~~:::: ;:¡~ ~;~~j. r ;.~ :~': .<.:. ::. ==~-::..:.r_ _:_4 :.; ~~~.~ 4Q; · .._1 . - to:. . ... '...... .. .. ~;. . ,. -:~::-..:.:: !:~-t: :;1; ~H :,.; ~~''''~;':i :.~: :::: :r' ::: ..:¡! ....-. .~.. ·.·~ï·' f'·'· ...... - .. ....-.~-"..'!.....,... ...... __...1... .. ~-t-+;. _;.LI_t;:; :i.. :_: '" ~ ~;.: .. .::: ..' :.,1 · I I' I:.· . .. . . t ~"Þ:f·~ ·t¡~.rFt[..;. ;~t iW /:..;~.;: ::7' :.:. > -;¡; \~ . .':.. HI . -1 T -dIt j~'1 ~ !¡:j' ;;;'. ..;~ -; i; ., .; ... " ... - -;_.. -. - ·r··· ..-... "110. .... . ~&., I I ~ I I It; . ~! I!;' I i I I . . i!!: " I. I .' i : . .- :!" . ._- ... ::;:!. [' : .. .. .. '.. .. .. .. ~ ~ }: .. . . .. I:.::;. .... . ...." .... ... .... , .. ... .... - I ._. . . - · . ._~ - ... - . -. .. . ;....1.; .... ~ ..: !;:; .-.. .. . .. ~ ... .. ...- . ..1. , . '. . .., ... 1 ~.~.:~ ~.'; · . . . -. '" :-¡ ,. "Þ.' ... . . .'" '" . . .. , . . .-. · . ... "'" , ., '" · . .-.. . . . .. . . I:' 3 . . . . .. ., .. .. . ~ .. '" " .. ,-. .. ... .. . . ,.1.. . , .-.! . , RAINFALL r -. ~'r~ .1. I;., i , H '''' ;~ ì: ;~ ,~ IF ~ .. . 1 f· " :~ .. l; ¡ ... l¡ .: ~ 1\ i~ ~, , \ . .. ,.. if r t :'., î t~ ~ \ - I t . j ,H. i \ .., .. . .., I" 1 1\, oJ. ~, l' ~ (: ~ i j\ ' .-Þ B. DESIGN OF FACILITIES 1. Streets and underground storm drains shall be designed to accommodate a five-year frequency storm with adequate overland relief for the 25-year storm. Design of all bridges, culverts, underpasses, and open channels are to be based on the 100 year frequency. 2. Curb height on all streets are to be not more than 8 inches, and at least equal to the depth of water at design flow. 3. Maximum depth of water to be allowed in residential streets at design flow is two-inches above top of crown, but not more than 8-inches at the gutter line. 4. Maximum spread of water in collector streets at design flow shall allow for one clear lane of traffic open. 5. Maximum spread of water in thoroughfares at design flow shall allow for two clear lanes of traffic open. 6. Spread of water curves will be furnished by the City Engineer to provide capacities of Collector and ~1ajor Thoroughfares at design flow. 7. Water in excess of that permissible in streets with allowable depth or spread of water shall be carried in storm sewers or open ditches not in street right-of-way. Capacity of storm sewers and ditches shall be calculated by t1anning's Formula as illustrated by the following chart. In cases where 43-inch or smaller pipe will handle the design flow, pipe shall be used. In cases where a 48-inch pipe is not adequate, the developer may use pipe or a lined open drainage channel. The Developer shall be required to install at his own expense all storm sewers and drainage structures. This policy is applicable to all drainage facilities other than the main channels of Mackey, Calloway, Walker, Fossil, Little Bear and Mesquite Branch Creeks. On these six water courses the developer shall be responsible for the excavation and improvements of the channel in an earthen condition in a manner approved by the City. After this improvement to proper section and slope in an earthen condition and a dedication of right-of-way to the City, the Developer shall be relieved from further maintenance responsibilities. 8. Where storm sewers are designed an overland swale shall be provided to accommodate the excess runoff to be expected during the 25-year storm unless the storm sewer is enlarged to a 25-year frequency design. 9. Sufficient and adequate catch basins are to be installed to allow entry of required quantity of water into storm sewers. Catch basin inlet openings shall be 7 inches high and the amount of inlet opening shall be as determined from the charts attached. 40 10. Street grades shall be such that excessive sand deposition from too low a water velocity or pavement scouring from too high a velocity is to be avoided as far as practical. Street grades are normally to be not less than 6 nor more than 70 feet fall per thousand linear feet and shall never be less than 4 nor more than 100 feet fall per thousand linear feet. Use of asphalt pavement will not be allowed when the water velocity exceeds 8 feet per second at design flow. 11. Concrete valley gutters shall be provided to carry the water flow across all intersections. Concrete valley gutters shall be 6 inches thick and a minimum of 6 feet wide, with reinforcing of #3 steel bars placed 16 inches on center each way. The valley gutters shall be poured monolithic with the curb returns. Concrete valley gutters will not normally be permitted across any street classified as thoroughfare. If an exception is jointly made by the City Engineer and Public Works Director, the valley gutter will be a minimum of 10 ft. in width. Valley gutters across collector streets will be discouraged except at intersections with a thoroughfare. If permitted, they will be at least 8 ft. in width. 12. Where water is dumped from a street directly into an open watercourse, it shall be dumped through an approved type of catch basin. 13. Where a flow of water is directed towards a curb and is required to turn in direction, the height of the curb against which the water is directed shall be not less than the depth of water flow plus the velocity head of the water plus two inches. 14. All open ditches in all subdivisions that are used to carry surface runoff shall be lined across the entire areas of each subdivision being developed, except as otherwise determined by the City Counci 1. Li ni ng of drainage ditch floors is to be done \'Jith 6" thick or thicker concrete. Walls are to be 4" concrete walls sloped not steeper than 1 foot vertically to l~ feet horizontally. All concrete slabs are to be reinforced with a minimum of 6" x 6" x 10 gauge x 10 gauge wire mesh, and provided with proper weep holes or other pressure relief measures. All open channels shall have a minimum bottom width of 6 feet. The height of the lining shall be adequate for the calculated depth at design flow. Side slopes of the channel above the lining shall be not steeper than 1 foot vertical rise to 2 feet horizontal distance. 15. In new subdivisions the developer shall provide all the necessary easement and right-of-way required for drainage structures, including storm sewers and open lined channels. Easement width for storm sewer pipe shall not be less than 10 feet, and easement width for open channels shall be at least 20 feet wider than the top of the channel, 15 feet of which shall be on one side to serve as access way for maintenance purposes. 41 16. Bridges are to be constructed at all street crossings over the major streams in the City and shall have the proper dimensions to fit the proposed channel sections given in the drainage section of the City's Comprehensive Plan or as stipulated by the City Engineer. 17. Developers will insure that due care is exercised to comply with the provisions of Texas Water Code, Sect. 11.086, and this shall include having appropriate drainage studies and plans prepared and sealed pursuant to the PROFESSIONAL ENGINEERS DISCIPLINARY RULES DR1.l, 2.2 and 3.1 and ETHICAL CONSIDERATIONS EC 6.3 and 6.4. Water concentrated in streets, pipes, drains, culverts, and channels will be moved to a recognized water course without damage to intervening structures or undue spreading across intervening land. The developer is responsible for constructing any channelization required to accomplish this and also to obtain any necessary easements from intervening land owners. Calculations will be required to show that connecting offsite drainageways are capable of handling any increase in runoff due to development, concentration, or diversion for at least the 10 year storm frequency. 18. Developers of property downstream on a drainage basin which is undeveloped, or only partially developed, will insure that drainage facilities through their development are adequately sized to handle runoff from higher lands when the higher lands are fully devloped. Runoff coefficients assumed for higher undeveloped property will take due note of current zoning and the most probable use of the property and these assumptions will be clearly spelled out in development plans. PASSED AND APPROVED THIS day of ,1981. MAYOR ATTEST: CITY SECRETARY 42 NORTH RICHLAND HILLS DEVELOPER POLICIES NORTH RICHLAND HILLS SUBDIVISION REGULATIONS VOLUr~E I I I FEE SCHEDULES TY2£ ,occæ.Al'¡CY L Group R-3 Single fawily dwelling, dupl~<~ and tOwlL~ouse 2. Apart::ments .., -J. ~ '!;' T _1* ........., J.....I) ¥"-., R Offiç~~ church, dining, ho~e17 nursery3 hospital~ jail, nursing horoe, school (Except apartments and shell buildings) * ' A - ft-ssembly, E - Education, r - Institution, R-l - Hotels, 4& E-1, B-2 (except those listed above), B-3, B-4, E~ H-I All shell build;ngs FE E: S C ':-lED ULE BUILD n;G ÄE¿~ PROJECT PEP~T FEE . (Building.> p1u..:::!;Jing, and mechanical) SQUA...'G FEET BASE 1,000 or less 1,001 - 1,250 1,251 - 1,500 1,501 - 1,750 1,751 - 2,000 2,001 - 2,250 2,251 - 2,500 2,501 - 3,000 3,001 - 3,500 3,501 - 4~000 4,001 - 4,500 4,501 or more $ 60.00 90.00 115.00 135.00 160.00 200.00 245.00 275.00 320.00 37'0.00 395.00 450.00 SQUARE FEET BASE + 110NETARY UNIT PER SQ. FT. 2,000 - 20,000 20,001 - 50,000 50,001 100,000 100,001 - 200~OOO 200,001 or !!lore $ 0.00 + .10/sq. ft. 600.00 + .07/sq. ft. 1,600.00 + .05/sq. ft. 2,600.00 + .04/sq. ft. 5,600.00 + .025/sq. ft. SQUARE FEET BASE + MOXET.ARY UNIT PER SQ. FT. ° - 50 51 - 100 101 - 250 251 - 500 501 - 100,000 100,001 - 500,000 500~001 or more $ 20.00 25.00 40.00 60.00 10.00 + .10/sq. ft. 2,010.00 + .D8/sq. ft. 7,010.00 + .07/sq. ft. COnV2.ût5 ' SQUARE FEET BASE + NONETARY UNI'! PER SQw FT. o - 51 - 251 - 501 - 5,001 - 100,001 - 50 250 500 5,000 100,000 500,000 $ 20.00 : 25.00 ,35. 00 5.00 + .06!sq. ft. 55.00 + .05 sq. ft. 1,555.00 + .035!sq. ft. 6,555.00 + .025/sq. ft. 500,001 or 1IiQI"e GASOLINE SER\~CE STATIONS; STORAGE G~~~GES, ~rnOLESALE Ab~ RETAIL STORES, PRINTING PL~~TS, ~illrrCIPAL POLICE 1L~ FIF~ STATIONS, FACTORIES, WORK SHOPS, STO~~GE AND SALES ROO~~7 AIRC~;ET RANGERS (YES 10ID NO) (HIGHLY :FL.&~L'\J3LE OR COKBUSTIBLE) SPRAY PAINTING, HAZARDOUS HATERIALS ..ê~--o CITt2,rrCALS -."i ... FEES FOR ALTER.'\TIONS _~.ND RE.P AIRS ..-"--. ~--'. NONE:TARY VALUE OF PROPOSED~lOR...T( TR,WEPER.~rrT FEE K\SE + PERCENTAGE OF ESTTI-L-'\TED COST C08pletion of any shell building $ 0 - 500 501 1;,500 1,501 - 3,000 3:09°1 5:0000 5:0001 - 50,000 50,001 100:0000 100:0001 500:0000 500:1 001 or more $ 10.00 20.00 30.00 0.00'+ .01 10.00 + .008 85.00 .+ . ..00&5 285.00'+ .0045-' 785.00 + .0035-- 5. Any occupancy group:o repairs and alterations MONETARY VALUE OF PROPOSED 1-70RK BASE + PERCENTAGE OF ESTINATED COST One trade only $ 0 -501 1,501 3,001 5,001 50,001 100,001 500,001 - 500 1',500 - 3,000 5,000 50,000 - 100,000 - 500,000 or more $ 10.00 15.00 20.00 25.00 0.00'+ .005 50.00'+ .004 150.00'+ .003 650.00 + . '.002 6. N~s~el1aneous work 7. Moving of building or structures: For the moving of any building or structure, the fee shall be $50.00 for the first day and $10.00 for each additional day, or fraction thereof, that the house or building is in or on the street, alleys, avenues, or public grounds. 8. Demolition of bui1di~ or structures: for the demolition of any building or structure, the fee shall be $25.00 I -;; -;; t^HID11 "/1' . 7. NaIling oE Buildiùg or Structu('e~,: For the moving of ao.y building or structure, the fee shall be $50.00 ror the first day and $10.00 for each addition~l day, or fraction thereof, that the house or building is in or on the street, alleys, avenues, or public grounds. 8. Deffiolition of Building or Structures: For the d8~alition of any building or structure, the fee shall be $25.00. Page 3 ~ PRELIMINARY PLAN FILING FEES Preliminary Plan Filing Fees shall be established as $25.00 per plan plus $0.60 per lot residential and $2.00 per acre for non-residential areas other than parks for which no fee is required. FINAL PLAT FILING FEE Final Plat Filing Fees shall be established as $25.00 per plat plus $0.60 per lot residential and $2.00 per acre for non-residential areas other than parks for which no fee is required. Inspection and Laboratory Fees shall be established as follows: The three (3%) per cent inspection fee will be paid by the developer for all public improvements in all single family residential subdivisions. On other than single family residential subdivisions the fee shall be based on the following: Three (3%) per cent on all public improvements of $9.00 per acre, whichever is the greater of the two. When any 1 aboratory test shov!s a condition which does not meet specifications, the developer shall pay for all tests required by the City's Inspector to determine that the failing condition has been corrected. Final Plat $50.00 plus $4.00 per acre or $1.00 per lot $50.00 plus $4.00 per acre or $1 .00 per lot $50.00 plus $4.00 per acre or $1.00 per lot $150.00 (letters to be sent by regular mail) $50.00 for homeowners and $100.00 for businesses Preliminary Plat Replat Zoning Change Board of Adjustment Hearing Easement Vacation $100.00 $50.00 Street Vacation Recording Fee $55.00 per intersection Plats - $15.00, oversized plats - $30.00, covenants - $5.00 per page Street Signs