HomeMy WebLinkAbout0372 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compaction of fills, said provisions having been superseded by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
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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
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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'
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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
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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 ~%
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'7,.
Passing 1/2" scrccn
20
5 -- 15%
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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
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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
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---C~''~^ 1 ..... "~ 4-~ °
"1
4-
............. , ~ff ...... t of
.".arming)
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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
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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.
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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
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.,....
hydrant~)
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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:
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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.
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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.
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~AYOR
ATTEST. ·
CITY CLERK
OF
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