HomeMy WebLinkAboutResolution 2008 - 17 UBC SidewalksInstrument # 349088
REXBURG, MADISON, IDAHO
9-30-2008 04:40:00 No. of Pages: 6
Recorded for: CITY OF REXBURG
MARILYN R. RASMUSSEN Fee: 0.00
Ex-Officio Recorder Deputy
CITY OF REXBURG
RESOLUTION 2008 — 17
BE IT RESOLVED by the Mayor and City Council of the City of Rexburg, Idaho that
effective August 20`h 2008, the City of Rexburg adopts the standards and specification set
forth in the current edition of the Idaho Standards for Public Works Construction and
Supplemental Conditions - Standard Drawings & Specifications, as the City of Rexburg's
minimum Standard Drawings & Specifications and any additions, amendments or addenda
thereto established by the City Engineer.
FURTHERMORE, ANY SUBDIVISION WHICH SHALL REQUEST ANNEXATION
INTO THE City of Rexburg or any subdivision which is in the Rexburg Impact Zone and all
lots less than one acre in size, must be in substantial compliance with the Rexburg Standard
Drawings & Specifications prior to being annexed or approved, unless modified by an
annexation or development agreement. The terms of this resolution, if in conflict with any
existing Ordinances or Resolutions, shall be controlling. Specifically, this Resolution applies
to Ordinance No. 658 (Rexburg Subdivision Ordinance).
ADDITIONALLY the City establishes the following policies and guidelines.
The City of Rexburg reserves the right to place on hold / shut down any project due the
springtime thaw.
A. STREETS — Streets shall have as a minimum:
7' Landscape Strip followed by a 5' Wide Portland Cement Concrete Sidewalks on
both sides of street per City of Rexburg Standards.
2. Curb & Gutter (as required per zoning)
a. Portland Cement Concrete Curb & Gutter on both sides.
b. Minimum grade = 0.30%.
3. Street Ballast Thickness
Residential Streets
i. 2 1/2 inch thickness of hot asphalt plant mix.
ii. 3 1/2 inch thickness of 3/4 inch Aggregate Base.
iii. Granular sub base material thickness as required by the City Engineer.
(Normally 12 inches with geotextile fabric below and up sides, but may
vary depending on traffic volumes and strength of subgrade soils.)
b. Arterial Streets & Heavy Duty Industrial Commercial Streets
i. 3 1/2 inch thickness of hot asphalt plant mix.
ii. 6 inch thickness of 3/4 inch Aggregate Base.
iii. Granular sub base material thickness as required by City Engineer.
(Normally 20 inches with geotextile fabric below and up sides, but may
vary depending on traffic volumes and strength of sub grade soils.)
4. Asphalt Chip Seal of street surfaces to be placed within 2 years of the date the street
surface is constructed or may be included in a City Seal Coat project if such is
approved in the Annexation/Development Agreement.
5. Street right-of-way widths and curb -to -curb widths shall be as per City of Rexburg
Standards for the street type, unless otherwise approved by the City Engineer and
City Planning Zoning Commission.
6. Testing of street construction to be in accordance with current ISPWC.
B. WATERLINES
1. Water lines shall be Class 50 Ductile Iron.
Minimum water main size shall be 8 inch diameter, unless a 6 inch line is
specifically approved by the engineering department.
2. Water service stub outs are to be placed at property corners where practical. Water
meters and curb stops are to be placed within the landscaping strip. The water
service lines are to be extended to the utility easement. Refer to Utility Location
Standard Drawing.
3. Fire flow requirements, fire hydrant spacing and related waterline size(s) shall be as
required in the International Fire Code for zones or developments.
4. Gridded and/or looped water mains are to be installed whenever possible. Six
(6)-inch mains may have up to three hundred (300) feet of dead end service with one
fire hydrant; eight (8)-inch or larger mains, up to five hundred (500) feet of dead-end
service with up to two (2) hydrants or one hydrant and one fire sprinkler system on
the dead-end.
5. Minimum depth of cover over water mains shall be 5 feet.
6. Water mains shall be valved at intersections and other locations so that not more
than 600 foot long segment of water main has to be taken out -of -service to provide
needed maintenance / repair work.
7. Water mains shall be stubbed -out to the edges of developing property to allow for
future water main service to adjacent property and to provide the required looping /
gridding of the overall water main system.
8. Individual house/business water service lines shall be stubbed -out to lots adjacent to
new streets so as to eliminate / prevent the need for future excavation work in new
streets.
9. Developers are financially responsible for a minimum eight (8) -inch diameter water
main or such large size water main as may be needed to provide the required fire
flow for the proposed new development. (See Item 3 above and International Fire
Code requirements.)
10. Water line stub -outs to be ball -type corporation and curb stop adapter, poly -by -
female metal pipe, and rated at 300 psi minimum working pressure. Approved water
line materials are class 200 psi polyethylene pipe.
11. Fire Hydrant to be Mueller, Waterous, or Clow Brands.
12. Water main valves to be Resilient Wedge Gate Valves for 12" and smaller diameter
pipes and Butterfly Valves for larger diameter pipes rated at 250 psi or more working
pressure. Double disc gate valves will not be accepted.
13. Acceptance of the water lines are based on the following criteria:
a. Bedding and backfilling of trenches shall be constructed in accordance with
current ISPWC, unless otherwise specified by City Engineer.
b. Perform all testing in the presence of the City Engineer or his assigned agent.
c. Pressure Testing
i. Hydrostatic pressure test lines at 150 psi or 1.5 times working
pressure, whichever is greater, for a period of two -hours to verify
allowable leakage is not exceeded.
ii. Provide the equipment including gauges and instrumentation and
calibrate at the request of the engineer
iii. Flush lines at a minimum velocity of 2.5 feet/second for the required
time per ISPWC.
d. Disinfection of water lines to comply with ANSI/AWWA C 651.
i. After retention period, collect 2 samples from each location at least 24
hours apart for chlorine residual testing.
e. Final Flushing
i. After the retention period, flush the chlorinated water from the main
until chlorine measurements show that the concentration in the water
leaving the main is no higher than that of the system.
f. Bacteriological Tests
After final flushing and before the line is placed into service, collect 2
samples from each location at least 24 hours apart for coliform
bacteria.
ii. Unless otherwise directed by the engineer, collect samples from each
1200 feet of new main and one from each branch.
g. Re -disinfection
i. If initial disinfection fails to produce approved bacteriological
samples, re -chlorinate, re -flush and resample until acceptable results at
the main are obtained.
h. Swabbing
i. If connections are not disinfected along the new main, swab or spray
the interior of all pipe and fittings in the new main with 6.25%
hypochlorite solution prior to installation.
C. SANITARY SEWER & STORM DRAINS
l . Minimum sanitary sewer main size shall be 8 inch diameter.
2. Sanitary sewer lines to be ASTM D3034, SDR 35, or ASTM F679 or engineers
accepted equivalent for gravity sewer and ANSI/AWWA C900, Class 150, or
engineers accepted equivalent for pressure sewer lines.
3. Minimum storm drain size shall be 12 inch diameter.
4. Manholes shall be no more than 400 feet apart.
5. At manholes, pipes of differing diameters shall be located (vertically) so as to match
their 0.6 diameter points.
Minimum pipe grades shall be per the Ten State Standards.
Sewer mains shall be stubbed out to the edges of developing property to allow for
future sewer main service to adjacent property. Sewer mains shall be kept as deep
as practical so as to provide the possibility of sewer service to as large an area as
possible.
Individual house/business sewer service lines shall be stubbed -out to lots adjacent to
new streets so as to eliminate the need for future excavation work in new streets.
9. Developers are financially responsible for a minimum eight (8) - inch diameter
sewer main or such larger size sewer main as may be needed to provide sewer
service for the proposed new development.
10. Developers are financially responsible for a minimum twelve (12)-inch diameter
storm drain main or such larger size storm drain size as may be needed to provide
for storm drainage run off from the proposed new development.
11. Developers are financially responsible for sanitary sewer or storm drain line depth
up to sixteen feet (16') to pipe flow line. Deeper depths that are necessitated to
serve adjacent yet -to -be developed property will be participated in by the City as
such may be approved in the Annexation/Development Agreement.
12. Storm drainage rainfall values and run off coefficients shall be as established in
accordance with State of Idaho Catalog of Storm Water Best Management Practices.
13. In an area were city sewer services are unavailable, a house sewer service line shall
be constructed and marked anywhere from 10' from the side of the house facing the
street to the edge of the street right of way to facilitate an easy connection to a
future sanitary sewer main in the street.
14. Acceptance of the sanitary sewer are based on the following criteria:
a. Bedding and backfilling of trenches shall be constructed in accordance with
current ISPWC, unless otherwise specified by City Engineer.
b. Perform all testing in the presence of the City Engineer or his assigned agent.
c. Air Pressure Testing
i. Low pressure air test lines that are 24" and less in diameter.
ii. Provide the equipment including gauges and instrumentation and calibrate
at the request of the engineer
iii. Preliminary and Final Testing
a. Preliminary testing: At the discretion of the contractor, preliminary
testing may be done at any time prior to installation of other
utilities.
b. Final Testing: Perform final testing after backfilling and
compaction and following installation of other utilities, but prior to
surface restoration.
iv. Test pipe according to ISPWC Division 500 Section 501.3.4
d. Deflection Tests for Flexible Pipe
i. Deflection test - all flexible pipelines after backfill and compaction is
completed. The maximum allowable deflection is to be 5.0% of the
nominal pipe diameter.
ii. Provide test mandrels with a diameter of no less than 95% of the actual
inside diameter of the pipe.
iii. Pull the mandrel through the pipe by hand. If the pipe will not allow the
mandrel to pass, repeat the test from the other end to determine the limits
of the failure.
iv. Uncover and, if required by the engineer, remove and reinstall new pipe
sections for sections with excessive deflection or recompact bedding if, in
the opinion of the engineer, the existing pipe is not damaged. Retest pipe
after any repair work is completed. Do not reinstall damaged pipe.
e. Pipe Cleaning
i. After the pipe ends have been grouted according to ISPWC Division 500
Section 502.3.5 and prior to CCTV inspection, the completed pipeline will
be cleaned with a hydro cleaner by a city crew according to ISPWC
Division 500 Section 501.3.4.
f. Closed Circuit Television (CCTV) Inspection
i. Acceptance criteria:
1. No visible standing water in pipeline caused by grade defects
2. No pipeline structural defects observed
3. No pipeline installation defects observed
4. No infiltration observed
ii. CCTV sewer line inspection will be done by a city crew
iii. CCTV sewer line inspection is to be done after backfill and compaction,
but prior to surface construction (i.e.: paving, landscaping, etc). Uncover
and repair or reinstall sections of pipe found to have defects as directed by
the city engineer or his agents.
iv. Notify the City Wastewater Dept. @ (208) 359-3035 at least ten working
days prior to final surface reconstruction to allow for CCTV inspection to
be done, reviewed, and repairs to be done if necessary.
V. Any repairs will need to be re -inspected after the repair is completed.
A signed "Letter of Acceptance" from the City will be required prior to final surface
reconstruction (i.e.: paving, landscaping, etc).
D. WATER RIGHTS
1. Lands that are developed within the City of Rexburg and are, prior to
development, irrigated with surface water must be irrigated with the
existing surface water right. This may require the development of a
secondary irrigation system or special systems as conditions dictate.
2. Lands that are developed within the City of Rexburg and are, prior to
development, irrigated with subsurface water shall transfer to the City of
Rexburg the subsurface right or portion of that water right prior to the
issuance of a will serve letter or provide a method of transfer acceptable to
the city.
This resolution shall take effect and be in force from and after its passage and approval.
DATED this 20"' day of August 2008.
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CITY OF REXBURG
Madison County, Idaho
By
Mayor Shawn Larsen
City Clerk Blair Kay