HomeMy WebLinkAboutOrd_Appendix B - September 2023 with changes 11.2.23Page 1
CIT Y OF R EX BU RG
OR D IN AN CE A PPE N D IX B - SEPT EMBE R 2023
N OW THER EFORE , be it ordained by the C ouncil of the City of Rexburg, in the
State of Idaho, as follow s:
SECTION 1: A MEND MEN T “A PPEN DIX B EN GINEERING
STA N D A RDS” of the Rexburg D evelopment Code is hereby amended as follow s:
A M E N D M E N T
A PPEN DIX B EN GINEERING STA ND ARDS
R ESOLU TION 2016-15EN GIN EER ING STA N D A R D S
(U pdating Resolution 2008 – 17) BE IT RESO LVED by the Mayor and City Council of the
City of Rexburg, Idaho that effective December 7th, 2016, 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 C onditions - Standard Drawings & Specifications, as
the C ity of R exburg’s minimum Standard D raw ings & Specifications and any additions,
amendments or addenda thereto established by the City Engineer. FU RTH ER MO RE, A NY
SU BD IV ISIO N WHICH SH ALL R EQU EST A N N EXATIO N IN TO TH E City of Rexburg
or any subdivision w hich is in the Rexburg Impact Zone and all lots less than one acre in size,
must be in substantial compliance w ith the R exburg Standard D raw ings & 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 R esolution applies to C hapter 13 of the City of Rexburg
D evelopment Code.
A DD ITIO NA LLY, the C ity establishes the follow ing policies and guidelines. The City of
Rexburg reserves the right to place on hold / shut dow n any project due to the springtime thaw.
STA N D A RD EN GINEERING D RAWING S LIN K
A.STR EE TS – Streets shall have as a minimum:
1.7’ Landscape Strip follow ed by a 5' wide Portland Cement concrete sidew alks
on both sides of street per City of Rexburg Standards.
2.Curb & Gutter (as required per zoning)
a.Portland Cement Concrete C urb & Gutter on both sides.
b.Minimum grade = 0.30%.
3.Street Ballast Thickness
a.Residential Streets
(1)2 1/2-inch thickness of hot asphalt plant mix.
(2)3 1/2-inch thickness of 3/4-inch Aggregate Base.
(3)
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G ranular sub base material thickness as required by the C ity
Engineer. (N ormally 12 inches w ith Mirafi 160 N or
approved equal geotextile fabric below and up sides, but may
vary depending on traffic volumes and strength of subgrade
soils.)
b.Arterial Streets & H eavy Duty Industrial C ommercial Streets
(1)3 1/2-inch thickness of hot asphalt plant mix.
(2)6-inch thickness of 3/4-inch Aggregate Base.
(3)G ranular sub base material thickness as required by C ity
Engineer. (N ormally 20 inches w ith Mirafi 160 N or
approved equal geotextile fabric below and up sides, but may
vary depending on traffic volumes and strength of sub grade
soils.)
4.A sphalt 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 C oat project if
such is approved in the A nnexation/Development Agreement.
5.Street right-of-way widths and curb-to-curb w idths shall be as per City of
Rexburg Standards for the street type, unless otherw ise approved by the City
Engineer.
6.Testing of street construction to be in accordance w ith current ISPWC.
7.PEO (Pedestrian Emphasis O verlay)
a.Minimum of a 7’ Landscape Strip follow ed by an 8' w ide Portland
Cement concrete sidewalk per C ity of R exburg Standard D raw ings.
b.Back of sidewalk to be installed at property line unless otherw ise
approved by C ity Engineer.
B.STR EE T LIGHTING
1.A ll street light w iring installed for the C ity of R exburg shall be in an approved
method of electrical conduit according to the currently adopted N ational
Electrical C ode (NEC).
2.N o direct burial cable without conduit shall be accepted by the City of
Rexburg if ow ned by, or proposed to be ow ned by the City of Rexburg.
3.A ll installations of electrical wiring for the purpose of street lighting shall meet
the current N EC adopted by the City.
4.A ll new conduits installed shall also be inspected by a C ity of R exburg
D esignated official prior to covering.
5.A s-built electronic drawings must be submitted to City of Rexburg.
6.A ll street lighting to comply with City of Rexburg Standard draw ings and
Chapter 10 of the City of Rexburg D evelopment C ode.
7.Street lights at intersection shall be A merican Electric Lighting number ATBM
D MV OLT R3 AO w ith H apco RTA 30D8B 4T1E or as approved by C ity
Engineer.
8.A light as defined in g. above may also be required mid-block if the spacing
between intersections exceeds 400 feet.
9.PEO (Pedestrian Emphasis O verlay)
a.Street lighting to be have a maximum spacing of 100 feet on each side
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of the street.
10.Street light model to be EH 22 FT 63LED 525MA 4K G CF R2 MV O LT
A ND B/EA E5-1 FINISH AN DB/ EPSX -20-S5 FIN ISH AN DB or as
approved by the City Engineer.
C.STORM SEWE R
1.Minimum storm drain pipe size shall be 12-inch diameter.
2.Manholes shall be spaced per IDA PA .
3.A t manholes, pipes of differing diameters shall be located (vertically) so as to
match their 0.6 diameter points.
4.Minimum pipe grades shall be per the ID APA .
5.Storm Sewer mains shall be stubbed out to the edges of developing property
to allow for future storm sewer main line service to adjacent property. Storm
Sew er mains shall be kept as deep as practical beyond development to provide
the possibility of storm sew er service.
6.D evelopers are financially responsible for a minimum tw elve (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.
7.D evelopers are financially responsible for 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 A nnexation/D evelopment A greement.
8.Storm Runoff
a.Storm drainage rainfall values and run off coefficients shall be as
established in accordance w ith State of Idaho Catalog of Storm Water
Best Management Practices.
b.The peak flow rate and maximum w ater surface elevations must be
calculated for the 100-year/1-hour storm event.
c.The overflow route shall direct the 100-year/1-hour post-development
flow safely towards the downstream conveyance system. Facilities
that do not have an adequate overflow location or bypass path must
be sized to fully infiltrate/drain the 100-year/1-hour event.
d.The City of Rexburg uses the 25-year/1-hour event for sizing of on-
site runoff storage facility, if it can be show n that downstream
facilities can safely accommodate flows in excess of the 25-year/1-
hour event.
e.Discharge into existing facilities must be restricted to the pre-
development level unless otherw ise approved by City Engineer.
f.Catch basin grate must be Neenah Model Number R-3067 or
approved equal. Catch B asins must be designed to accept peak runoff
flow rate.
9.A cceptance of the storm sewer facilities are based on the follow ing criteria:
a.Bedding and backfilling of trenches shall be constructed in
accordance w ith current ISPWC, unless otherwise specified by City
Engineer.
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b.Perform all testing in the presence of the City Engineer or his assigned
agent.
c.Testing per ISPWC Specifications.
d.Final Testing: Perform final testing after backfilling and compaction
and following installation of other utilities, but prior to surface
restoration.
e.On-site runoff storage facilities must be inspected prior to final surface
restoration.
f.A signed “Letter of A cceptance” from the C ity w ill be required prior
to final surface reconstruction (i.e.: paving, landscaping, etc.).
D.WATERL IN ES
1.Water lines shall be Class 50 D uctile Iron. Minimum w ater main size shall be
8-inch diameter, unless a 6-inch line is specifically approved by the City
Engineer.
2.Water service stub outs are to be placed at corner of the lot where practical.
Water meters and curb stops are to be placed within the landscaping strip. The
w ater service lines are to be extended to the back of the utility easement. Refer
to U tility Location Standard Drawing.
3.Fire flow requirements, fire hydrant spacing and related w aterline size(s) shall
be as required in the International Fire Code for zones or developments.
4.G ridded and/or looped water mains are to be installed w henever possible. Six
(6)-inch mains may have up to three hundred (300) feet of dead end service
w ith one standard fire hydrant; eight (8) -inch or larger mains, up to five
hundred (500) feet of dead-end service w ith up to tw o (2) standard fire
hydrants or one standard fire hydrant and one fire sprinkler system on the
dead-end. Flush hydrants are not allow ed in place of standard fire hydrant.
5.Minimum depth of cover over w ater mains shall be 5 feet unless otherw ise
approved by the City Engineer.
6.Water mains shall be valved at intersections and other locations so that not
more than 600-foot-long segment of w ater main has to be taken out-of-service
to provide needed maintenance / repair w ork. A dditional valving may be
required for construction and testing purposes.
7.Water mains shall be stubbed-out to the edges of developing property to allow
for future w ater main service to adjacent property and to provide the required
looping / gridding of the overall water main system.
8.Individual house/business w ater service lines shall be stubbed-out to lots
adjacent to new streets to eliminate the need for future excavation w ork in
new streets.
9.D evelopers are financially responsible for a minimum eight (8) -inch diameter
w ater main or such larger size w ater 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 w orking pressure. Approved
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w ater line materials are class 200 psi polyethylene pipe.
11.Red Fire Hydrant to be Mueller, Waterous, or Clow Brands w ith K O CHEK
(model SZMC5054-3-Y Storz adapter or approved equal.
12.Water main valves to be Resilient Wedge Gate Valves for 10” and smaller
diameter pipes and Butterfly Valves for larger diameter pipes rated at 250 psi
or more w orking pressure. Double disc gate valves will not be accepted.
13.A cceptance of the w ater lines are based on the follow ing criteria:
a.Bedding and backfilling of trenches shall be constructed in
accordance w ith current ISPWC, unless otherwise specified by City
Engineer.
b.Perform all testing in the presence of the City Engineer or his assigned
agent.
c.All testing in accordance with ISPWC Specifications.
d.A signed “Letter of A cceptance” from the C ity w ill be required prior
to final surface reconstruction (i.e.: paving, landscaping, etc.).
E.SA N ITA RY SEWE R
1.Minimum sanitary sewer main size shall be 8-inch diameter.
2.Sanitary sew er lines to be A STM D 3034, SDR 35, or A STM F679 or
engineers accepted equivalent for gravity sewer and AN SI/AWWA C900,
Class 150, or engineers accepted equivalent for pressure sewer lines.
3.Manholes shall be no more than 400 feet apart or per ISPWC .
4.A t manholes, pipes of differing diameters shall be located (vertically) so as to
match their 0.6 diameter points.
5.Minimum pipe grades shall be per the ID APA .
6.Sew er mains shall be stubbed out to the edges of developing property to allow
for future sewer main service to adjacent property. Sew er mains shall be kept
as deep as practical so as to provide the possibility of sew er service to as large
an area as possible.
7.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. Service lines to be near the center of the lots and 10’
horizontally from the w ater service.
8.D evelopers are financially responsible for a minimum eight (8) - inch diameter
sew er main or such larger size sew er main as may be needed to provide sewer
service for the proposed new development.
9.D evelopers are financially responsible for sanitary sewer or storm drain line
depth up to sixteen feet (16') to pipe flow line. D eeper depths that are
necessitated to serve adjacent yet-to-be developed property w ill be participated
in by the City as such may be approved in the Annexation/Development
A greement.
10.In an area were city sew er services are unavailable, a house sew er service line
shall be constructed and marked anyw here from 10' from the side of the house
facing the street to the edge of the utility easement to facilitate an easy
connection to a future sanitary sew er main in the street.
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11.A cceptance of the sanitary sew er are based on the following criteria:
a.Bedding and backfilling of trenches shall be constructed in
accordance w ith current ISPWC, unless otherwise specified by City
Engineer.
b.Perform all testing in the presence of the City Engineer or his assigned
agent.
c.Testing per ISPWC Specifications.
d.Pipe Cleaning
(1)A fter the pipe ends have been grouted according to ISPWC
D ivision 500 Section 502.3.5 and prior to CCTV inspection,
the completed pipeline will be cleaned w ith a hydro cleaner
by a city crew according to ISPWC Division 500 Section
501.3.4.
e.Closed Circuit Television (CCTV ) Inspection
(1)A cceptance criteria:
(A)No visible standing water in pipeline caused by grade
defects
(B)No pipeline structural defects observed
(C)No pipeline installation defects observed
(D)No infiltration observed
(2)CCTV sew er line inspection w ill be done by a citycrew
(3)CCTV sew er line inspection is to be done after backfill and
compaction, but prior to surface construction (i.e.: paving,
landscaping, etc.). U ncover and repair or reinstall sections of
pipe found to have defects as directed by the city engineer or
his agents.
(4)N otify the City Wastew ater D ept. @ (208) 359-3035 at least
ten w orking days prior to final surface reconstruction to allow
for C CTV inspection to be done, reviewed, and repairs to be
done if necessary.
(5)A ny repairs w ill need to be re-inspected after the repair is
completed.
(6)The cost for pipe cleaning and CC TV Inspection of the lines
w ill be billed to the ow ner at approved C ity of R exburg
Billing rates.
A signed “Letter of A cceptance” from the City will be
required prior to final surface reconstruction (i.e.: paving,
landscaping, etc.).
F.WATER RIGHTS
1.Lands that are developed within the City of Rexburg and are, prior to
development, irrigated w ith surface water must be irrigated w ith the existing
surface w ater right w here feasible. This may require the development of a
secondary irrigation system or special systems as conditions dictate.
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AY E N AY A BSE N T AB STA IN
Council President Jordan Busby
Councilmember Robert Chambers
Councilmember Tisha Flora
Councilmember Colin Erickson
Councilmember Mikel Walker
Councilmember Bryanna Johnson
Exceptions must be approved by City Engineer.
2.Lands that are developed within the City of Rexburg and are, prior to
development, irrigated w ith surface water and a secondary irrigation system is
not feasible shall transfer to the C ity of R exburg the surface right or portion of
that water right prior to the issuance of a w ill serve letter or provide a method
of transfer acceptable to the city.
3.A ll subsurface rights tied to property to be serviced by the City of Rexburg
shall be transferred to the City of Rexburg.
PA SSED A ND A DO PTED BY THE C ITY O F REX BURG CO UN CIL
_______________________________.
P r e s id in g O ffic e r A t t e s t
Jerry L Merrill, Rexburg Mayor, C ity
of Rexburg
Deborah Lovejoy, Rexburg City
Clerk, City of Rexburg