Loading...
0372 Design Standards for Sewers 1992SUMMARY OF ORDINANCE NO. 372 An ordinance of the City of Chubbuck, Idaho amending Chapter 16.12 and 16.16 of the Chubbuck Municipal Code to define a local street and to provide that such a street has a 50 foot right-of- way width and is 39 feet wide from curb to curb; eliminating the previous design standards set forth in the Chubbuck Municipal Code and adopting the design standards of the Great Lakes - Upper Mississippi River Board of State Public Health and Environmental Manager as published by the Health Education Services in Albany, New York; revising the provisions for storm water collection laterals and adopting the above design standards with the exception of runoff volume and rate, which is to be calculated using engineering methods approved by the City Engineer, requiring 12 inch inside diameter laterals and allowing additional pipe types beyond that allowed by the above designed standards; providing for design of water distribution systems according to the above standards and specifying specific additional design requirements; eliminating additional design requirements in the current code that are not necessary in light of the adoption of the above design standards; adopting the Idaho Standards For Public Works Construction as the construction standards for the City; revising the requirements for pavement sections within the City based upon the type of street and volume upon that street; deleting the current provisions of the Code for compaction of fills, said provisions having been superseded by the adoption of other design standards, providing for the waiver of the rule requiring ordinances be read separately on three separate occasions; providing the severability of the provisions of the ordinance and providing for the effective date of the ordinance. The full text of this Ordinance No. 372 is available at the City Clerk's office at the Chubbuck city Offices, 5160 Yellowstone, Chubbuck, Idaho. I have reviewed the foregoing summary and believe that it provides a true and complete summary of Ordinance No. 372 and that the summary provides adequate notice to the public of the contents of this Ordinance DATED April 27, 1992. Thomas J. Holmes SUMMARY OF ORDINANCE NO. 372 - Page 1 dsc chbbck04.272 CITY OF CHUBBUCK, IDAHO ORDINANCE NO. 372 AN ORDINANCE OF THE CITY OF CHUBBUCK, IDAHO, AMENDING CHAPTER 16.12 AND 16.16 TO ADD THE DEFINITION OF A LOCAL STREET, REQUIRE CONCRETE CURBS, REVISE AND IMPLEMENT DESIGN STANDARDS FOR SEWERS, STORM WATER RUN OFF COLLECTION SYSTEMS, WATER DISTRIBUTION SYSTEMS AND TO DELETE CONFLICTING OR OBSOLETE STANDARDS; ADDING CONSTRUCTION STANDARDS TO CHAPTER 16.12 INCLUDING THE ADOPTION BY REFERENCE OF THE IDAHO STANDARDS FOR PUBLIC WORKS CONSTRUCTION, REVISING CHAPTER 16.16 TO ELIMINATE COMPACTION AND FILL STANDARDS SUPERSEDED BY ADOPTION OF OTHER STANDARDS IN CHAPTER 16.12; REPEALING PRIOR CONFLICTING ORDINANCES; PROVIDING FOR THE SEVERABILITY OF THE PROVISIONS OF THIS ORDINANCE; PROVIDING THAT ALL OTHER SECTIONS AND PROVISIONS OF CHAPTER 16.12 and 16.16 NOT HEREIN AMENDED SHALL REMAIN IN FULL FORCE AND EFFECT; AND PROVIDING WHEN THIS ORDINANCE SHALL BECOME EFFECTIVE. BE IT ORDAINED BY THE MAYOR AND COUNCIL OF THE CITY OF CHUBBUCK, IDAHO: Section 1. Amended Chapter 16.12. Chapter 16.12 of the Chubbuck Municipal Code is amended as follows: Chapter 16.12 ENGINEERING STANDARDS Sections: I. GENERAL STANDARDS 16.12.010 16.12.020 16.12.030 16.12.040 16.12.050 16.12.060 16.12.070 16.12.080 Application. Streets. Blocks and lots. Landscaping. Utilities and other facilities. Water, sewer, and storm drainage lines. Monuments. Access to utilities by easements. II.~w°"~T ~,~,m~,,~ ~.~.. ~.~ DESIGN STANDARDS Cc.ncra i. ....~ ~ r ight-~ f-way ORDINANCE - Page 1 dsc chbbck03.252 I~. 12. I~0 i~. 12. 16.12.200 ..16.12. 210 16.12. 220 Sanitary scwcr~. Storm ~cw~r~. Sanitary Sewers Storm Water Runoff Collection Systems Water Distribution System 16.12.300 16.12.310 16.12.320 16.12.330 16.12.340 III. CONSTRUCTION STANDARDS Adoption General Fees and Permits Special Backfill Requirements Street Pavement Sections 16.12.020. A. The arrangements, character, extent, width, grade and location of all streets shall conform to the comprehensive plan, shall integrate harmoniously with existing and planned streets, shall be appropriate to topographical conditions, shall enhance the public convenience and safety, and shall facilitate the proposed uses of the land to be served by such streets. B. Local residential streets shall be designed to discourage their use by through traffic. Where a development abuts or contains an existing or proposed arterial street (as described below), railroad or limited access highway, the city may require frontage streets, reverse frontage streets, or such other treatment for the appropriate use of the tract. C. There shall be provided rights-of-way of such width and as provided in the comprehensive plan; provided, however, that the width of said rights-of-way shall in no case be less than the following: Type of Street Riqht-of-Way Width Curb Face-to-face Major arterial (major thoroughfare carrying traffic into and out of the city) 80' 64' Minor arterial (carries high traffic volumes onto and from other arterial, collector and local roads) 66' 52' Collector (medium density carrier of the traffic between neighborhoods and districts of the city) 60' 46' ORDINANCE - Page 2 dsc chbbck03.252 Local 50' (low density carrier of the traffic within neiqhborhoods and districts of the city) 39' Types of streets within a development shall be determined by the city engineer, consistent with the comprehensive plan. D. Cul-de-sac streets shall terminate in a circular turn- around with the right-of-way radius of at least forty-five feet. The city engineer may approve an equally convenient form of turning space where extreme conditions justify. The maximum length shall not exceed four hundred feet from the entrance to the center of the turn-around, unless the city engineer finds that greater length will permit better development of the subject property. E. Dead-end streets will not be approved except in locations designated by the city engineer as necessary to future extensions in development of adjacent lands. In any case, a dead-end street serving more than four lots shall provide by easement a temporary turning circle with a forty-foot radius or other acceptable design to accomplish adequate access. F. Loop streets shall be limited to a maximum length of two thousand feet. G. Streets shall be planned to intersect as nearly as possible at right angles, but in no event at less than seventy degrees. Streets intersecting an arterial shall do so at a ninety-degree angle. H. Where any street deflects at an angle of ten degrees or more, a connection curve shall be required having a minimum centerline radius of three hundred feet for arterial and collector streets and one hundred twenty-five feet for local streets. I. Streets with centerline offsets of less than one hundred twenty-five feet shall be avoided. J. A tangent at least one hundred feet long shall be provided between reverse curves on arterial and collector streets. K. At street intersections, property line corners shall be rounded by a circular arc, said arc having a minimum tangent length of twenty feet. L. Street intersections with more than four legs and Y- type intersections where legs meet at acute angles shall be avoided. "T" intersections, rather than "cross" intersections, shall be utilized to the maximum extent possible in residential developments. M. Maximum and minimum grades for all streets shall be as determined by the city engineer. N. Alleys--twenty feet, when single family residence units abut both sides; twenty-four feet if abutting multiple family, commercial, or industrial districts. Dead-end alleys shall be avoided. O. Streets shall be extended to the boundary lines of the development, unless prevented by topography or other physical conditions or unless the city engineer determines that such ORDINANCE - Page 3 dsc chbbck03.252 extension is not desirable for coordination of the development with the existing layout or the most advantageous future development of adjacent tracts. However, streets carrying nonresidential traffic, especially truck traffic, shall not normally be extended to the boundaries of adjacent existing or potential residential areas, or connected to streets intended for predominantly residential traffic. P. Excessively long, straight local streets in residential areas, conducive to high-speed traffic, shall be prohibited according to the determination of the city engineer. Q. Pedestrian walks on both sides of a street, within the street right-of-way, together with concrete curbs and gutters approved by the city engineer, and paved vehicular traffic area, shall be required on all streets in a proposed development. R. Access to streets shall conform to the "standard approach policy" promulgated by the division of highways, state department of transportation. DESIGN STANDARDS mineral binder fy. ~.v~ Cravcl f~r subbacc shall Passin~ No.~' ~ sievc ~ ~ ~'~ 200 sicvc- ,,~t ~% ORDINANCE - Page 4 dsc chbbck03.252 '7,. Passing 1/2" scrccn 20 5 -- 15% ORDINANCE - Page 5 dsc chbbck03.252 conform to thc corrcspond~.ng ........... ...~-,.. ..,.. ~., fl-~ ~-ppcd an~ of =off ici =attar tight. minim-~ cf five fcct in length. " ~ ~ curb and --'ttcr shall b~ givcn float fini;h; ~ ......... ~ ............~u- h~ of basc coursc and ......................... ~ .... guttcr. Surf acc wood float or light b-~m ..... finish. .........~ ~ ~ '"~ ~ ~ .... ~~-~"~ ~ par foot frc~ th~ ~-~ ~ ~ t~ ~f .... ~ such that drainagc h ii h .,, ............. gravel f h d ORDINANCE - Page 6 dsc chbbck03.252 II. DESIGN STANDARDS 16.12.170 200 Sanitary sewers. A. Ail lateral sewers as required to adequately serve the area to be developed, and their connections to present trunk or interceptor sewers, shall be constructed as required. Location of nearest trunk or interceptor sewer will be designated by the city engineer. B. Sewer systems shall mcct be designed in compliance with the "Recommended Standards for Wastewater Facilities" ~ ..... romu ated the °~ ~ ..... .:-^_A-~ .... 4 ...... .,=~-,-, ...... Great Lakes - Upper Mississippi River Board of State Public Health and Environmental Manager and published by the Health Education Services, Albany, New York. Item Laterals ORDINANCE - Page 7 dsc chbbck03.252 ---C~''~^ 1 ..... "~ 4-~ ° "1 4- ............. , ~ff ...... t of .".arming) ORDINANCE - Page 8 dsc chbbck03.252 16.12.1E0 210 Stormwater sewe~ Runoff Collection Systems. A. Stormwater Collection s~e~ laterals, as directed by the city, shall be constructed, together with their connecting laterals, to existing trunk storm water runoff collection trunks ~ or to such place or places as will adequately dispose of all stormwatere runoff· B. Stormwater runoff collection sewe~ systems shall be designed using ~..~ ~v.~..u4:~--~-. "The Recommended Standards for Wastewater Facilities" as promulgated by the Great Lakes - Upper Mississippi River Board of State Public Health and Environmental Managers and published Health Education Services, Albany, New York with the following noted exceptions: 1. Runoff volume and rate. Runoff volume and rate shall be calculated using currently accepted engineering methods as approved by the City Engineer. 2. Laterals. The minimum size of storm sewer laterals shall be 12" inside diameter. 3. Pipe Types. In addition to the pipe types authorized, corrugated metal pipe which has been galvanized and asphalt dipped and paved may also be used. Item Basis ORDINANCE - Page 9 dsc chbbck03.252 C. The subdivider or developer will be subject to all fees and permits required by city ordinance governing the same. 16.12. 190 220 Water mains ~..-~-; s-. .... ·~;-A ~nc-_ distribution system. A. All water distribution system components -~;-s ............... ~ .... d th~"Id~h~ Hcalth and Wclfarc designed in compliance to "The Recommended Standards for Waterworks" as promulqated by The Great Lakes - Upper Mississippi River Board of State Public Health and Environmental Managers and published by Health Education Services, Albany, New York. B. In addition~ water mains distribution system components shall meet the following design requirements: 1. Pipe. Water system distribution pipe shall be cement lined ductile iron pipe, minimum class 50, with push on joint or mechanical joint connection, manufactured and installed in compliance with latest American Water Works Association (AWWA) specifications. 2. Fittings. Fittinqs shall be cast or ductile iron, class 250 for potable water, manufactured and installed in compliance with American Water Works Association (AWWA) specifications. 3. Valve spacing. Valves shall be installed at all crosses or tees with a maximum spacing of 1500 feet. 4. Fire Hydrant Spacing. No lot frontage shall be located more than 300 feet from a fire hydrant as measured within street right-of- way lines. 5. Pipe Cover. The minimum depth of cover from top of pipe to finish grade for all distribution system pipelines and service lines shall be 5'. 6. Fire Flow. The distribution system shall be desiqned so that it will provide a minimum fire flow of 1500 gallons per minute in addition to system domestic demands. ORDINANCE - Page 10 dsc chbbck03.252 r Hydrant) Basis of I.D. Iron bo Spcoification for same .... s ...... bo east zron sliding ..... sec en shall Ne let frontage shall bc leoatcd mere 4-~ °~ 4:4- 4: .... 4:;~^ hydrant ORDINANCE - Page 11 dsc chbbck03. 252 .,.... hydrant~) ORDINANCE - Page 12 dsc chbbck03. 252 III. CONSTRUCTION STANDARDS Sections: 16.12.300 ~6.12.310 16.12.320 16.12.330 16.12.340 Adoption. General. Fees and Permits. Special Backfill Requirements. Street Pavement Sections. 16.12.300 Public Works Standards Adopted. The 1990 edition of the Idaho Standards for Public Works Construction as promulqated by the Idaho Standards for Public Works Construction SubCommittee is adopted and incorporated herein by reference as an ordinance of the City in its current form and as it may be hereafter amended from time to time as thouqh set forth fully herein. Future editions of these standards may be adopted as the same are published from time to time by the Committee, by resolution of the Mayor and Council of the City and such resolution shall identify with particularity the edition beinq adopted. Unless specifically stated to the contrary, such resolution shall have the effect of adopting that future edition as the edition then in force. Three copies of the current edition of the Standards shall be maintained on file at the City Clerk's office for use and examination by the public. 16.12.310 General. Any street improvements, sanitary or storm sewer installations, water installations or other installations of other utilities, and any of their appurtenant structures or equipment, that are damaged or destroyed as a result of construction shall be repaired or replaced promptly by the developer in compliance with directions of the City Engineer. 16.12.320 Fees and Permits. The developer will be subject to all fees and permits required by city ordinance governing the same. 16.12.330 Special Backfill Requirements. Special backfill requirements will be required when PVC or ABS plastic pipeline is used for sewer or storm drainage purposes. In these cases the pipe shall be bedded with sand, or compacted soil free of rocks and stones greater than 3/4" in diameter. This bedding shall extend from 4" below the pipe to 18" above the pipe. No rock or stone greater than 12" in diameter shall be used in backfilling the remainder of the trench. In ground containing large rocks or boulders all backfill materials are to be segregated (rocks greater than 12" in diameter to be removed) and inspected by the City Engineer prior to backfilling. 16.12.340 Pavement Sections. The following pavement sections shall be used within the City of Chubbuck, as determined by the City Engineer: ORDINANCE - Page 13 dsc chbbck03.252 Traffic Category Traffic Description Pavement Section Component Component ISPWC Thickness Section Inches A Local residential streets parking areas not subject to trucks. < 800 vehicles/ day 3 equivalent 18-kip Single axle loads/day Asphalt concrete Crushed base (3/4") Geotextile 807 2.5 802 5.0 907 yes 807 3.0 802 5.0 907 yes 807 3.5 802 5.0 907 yes 807 4.0 802 5.5 907 yes 807 5.0 802 6.0 907 yes B Local streets <1500 vehicles/day, 5 equivalent 18-kip single axle loads/day Asphalt concrete Crushed base (3/4") Geotextile C Minor collector streets <2000 vehicles/day, 10 equivalent 18-kip single axle loads/day Asphalt concrete Crushed base (3/4") Geotextile D Major collector streets <5000 vehicles/day, 20 equivalent 18-kip single axle loads/day Asphalt concrete Crushed base Geotextile E Minor arterial streets <10,000 vehicles/day, 55 equivalent 18-kip single axle loads/day Asphalt concrete Crushed base Geotextile F Major arterial streets >10,000 vehicles/day, 55 equivalent 18-kip single axle loads/day Pavement section to be designed using data and conditions applicable to use Section 2. Amended Chapter 16.16. Chapter 16.16 of the Chubbuck Municipal Code is amended by deleting therefrom Section 16.16.090 titled Compaction of fills for the reason that other standards have been adopted by the revisions to Chapter 16.12 adopted above. ORDINANCE - Page 14 dsc chbbck03.252 ADMINISTRATIVE PROVISIONS Section 1. Repeal of Conflicting Ordinances. The provisions of any Ordinance of the City of Chubbuck, Idaho, and any provision of the Chubbuck Municipal Code which are in conflict with the provisions of this Ordinance are hereby repealed to the extent of such conflict. All other sections and provisions of Chapter 16.12 and 16.16 not herein amended shall remain in full force and effect. Section 2. Severability. If any provision of this ordinance is held invalid, for any reason, by any court of competent jurisdiction, such holding shall not affect the validity or enforceability of any of the remaining provisions. Section 3. Effective Date. The rule requiring an ordinance to be read on three separate days, one of which shall be a reading in full, is hereby dispensed with, and this Ordinance shall become effective upon its passage, approval and publication as provided by law. ORDINANCE - Page 15 dsc chbbck03.252 ~AYOR ATTEST. · CITY CLERK OF ORDINANCE - Page 16 dsc chbbck03.252