HomeMy WebLinkAbout14332RESOLUTION NO. 14332
A RESOLUTION APPROVING REVISIONS TO THE
STANDARD CONSTRUCTION SPECIFICATIONS AND
STANDARD DETAILS FOR THE CITY OF PUEBLO
BE IT RESOLVED BY THE CITY COUNCIL OF PUEBLO, that:
SECTION 1.
Pursuant to section 9-1.5-103 (10) of the Colorado Revised Statutes all new
underground facilities, including laterals up to the structure or building being served,
installed on or after August 8, 2018 must be electronically locatable.
SECTION 2.
Pursuant to and in furtherance of sections 3-2-60(8), 4-2-2 (g), 4-6-2(g), 12-3-1,
12-4-7 (j)(2), 12-4-7 (j)(5)(b), 12-4-7 (j)(5)(c), 12-4-7 (J)(8), 12-6-5 (f), 12-6-9 and 17-4-
49(e)(4)(e) of the Pueblo Municipal Code, as amended, and upon recommendation by
the City Engineer, the Council does herby approve the revisions to the Standard
Construction Specifications and Standard Details for the City of Pueblo, Colorado as
shown on the documents attached hereto.
SECTION 3.
After adoption of this Resolution, a true copy of the Standard Construction
Specifications and Standard Details for the City of Pueblo, as revised, shall be
maintained on file in the office of the City Clerk for public inspection. Copies shall be
made available through the City’s Department of Public Works for purchase by the
public at a moderate price. The document is also available on the City of Pueblo’s
website.
SECTION 4.
This Resolution shall become effective immediately upon passage and approval.
INTRODUCED December 23, 2019
BY: Ed Brown
MEMBER OF CITY COUNCIL
APPROVED:
PRESIDENT OF CITY COUNCIL
ATTESTED BY:
DEPUTY CITY CLERK
City Clerk’s Office Item # M-9
Background Paper for Proposed
Resolution
COUNCIL MEETING DATE: December 23, 2019
TO:
President Dennis E. Flores and Members of City Council
CC:
Nicholas A. Gradisar, Mayor
VIA:
Brenda Armijo, City Clerk
From:
Sam Vigil, Public Works Director
SUBJECT:
A RESOLUTION APPROVING REVISIONS TO THE STANDARD
CONSTRUCTION SPECIFICATIONS AND STANDARD DETAILS FOR
THE CITY OF PUEBLO
SUMMARY:
This resolution approves the revisions to the City’s Standard Construction Specifications
and Standard Details to include the installation of tracer wire to comply with Colorado
Revised Statutes 9-1.5-103 (10).
PREVIOUS COUNCIL ACTION
:
None
BACKGROUND
:
The City’s “Standard Construction Specifications and Standard Details,” which were adopted by
the City Council in June of 1997 and revised in February 2001, May 2004 and March 2005
govern the construction of streets, curbs and gutters, driveways, sidewalks, sanitary sewer,
storm sewers, and excavations in the public right of way. Since their adoption and subsequent
revisions, certain modifications are necessary to adapt to changing state requirements.
The State of Colorado signed Senate Bill 18-167 to increase public safety and reduce related
costs and delay to construction projects. The bill requires that all new underground facilities,
including laterals up to the structure or building being served, installed on or after August 8,
2018, must be electronically locatable when installed per section 9-1.5-103(10), C.R.S.
Attached to the resolution are the new section and detail sheets which is an addition to
the Standard Specifications and Standard Details for the Tracer Wire Requirements that
will satisfy the requirement that any new underground utility electronically locatable.
This will be titled Article 17.
FINANCIAL IMPLICATIONS
:
The details set forth to comply with the requirement to make underground utilities
electronically locatable will be minimal to both the City and private developers.
BOARD/COMMISSION RECOMMENDATION
:
Not applicable
STAKEHOLDER PROCESS
:
A draft of the proposed changes to the specification and details were sent out to
developers, homebuilders and engineering firms for comment.
ALTERNATIVES
:
None
RECOMMENDATION
:
Approval of the Resolution.
Attachments
: Tracer Wire Specifications and Details
Materials
General
The work covered by this section of the specifications consists of the furnishing of all labor, supplies, equipment and materials and performing all
operations in connection with the installation of tracer wire and appurtenances, as shown on the plans, as herein specified and directed by the
Engineer to comply with Senate Bill 18-167. The bill requires that all new underground facilities, including laterals up to the structure or building
being served, installed on or after August 8, 2018, must be electronically locatable when installed per section 9-1.5-103(10), C.R.S.
All tracer wire and tracer wire products shall be domestically manufactured in the U.S.A.
All tracer wire shall have HDPE insulation intended for direct bury, color coated per APWA standard for the specific utility being marked.
Tracer Wire
Open Trench - Tracer wire shall be #12 AWG copper clad steel, high strength with minimum 450 lb. break load, with minimum 30 mil HDPE
insulation thickness.
Directional Drilling/Boring - Tracer wire shall be #12 AWG copper clad steel, extra high strength with minimum 1,150 lb. break load, with
minimum 30 mil HDPE insulation thickness.
Tracer wire - Pipe Bursting/Slip Lining - Tracer wire shall be 7 x 7 stranded copper clad steel, extreme strength with 4,700 lb. break load,
with minimum 50 ml HDPE insulation thickness.
Connectors
All mainline tracer wires must be interconnected in intersections, at mainline tees and mainline crosses. At tees, the three wires shall be joined
TM
using a single 3-way lockable connector (SnakeBite or approved equal). At crosses, the four wires shall be joined using a 4-way connector.
Use of two 3-way connectors with a short jumper wire between them is an acceptable alternative.
TM
Direct bury wire connectors - Shall include SnakeBite 3-way lockable connectors (or approved equal) and mainline to lateral lug
connectors specifically manufactured for use in underground tracer wire installation. Connectors shall be dielectric silicon filled to seal out
moisture and corrosion and shall be installed in a manner so as to prevent any uninsulated wire exposure.
Non-locking friction fit, twist on or taped connectors are prohibited.
Termination/Access
All tracer wire termination points must utilize an approved tracer wire access box (above ground access box or grade level/in-ground access
box as applicable), specifically manufactured for this purpose.
All grade level/in-ground access boxes shall include a dual terminal switchable lid (SnakePit LD14G2T-SW or approved equal), be
A minimum of 2 ft. of excess/slack wire is required in all tracer wire access boxes after meeting final elevation.
All tracer wire access boxes must include a manually interruptible conductive/connective link between the terminal(s) for the tracer wire
connection and the terminal for the ground rod wire connection.
Ground wire shall be connected to the identified (or bottom) terminal on all access boxes.
Service Laterals on public property - Tracer wire must terminate with a coil of 6 feet of tracer wire for future extension to the building,
located at the edge of the road right-of-way, and out of the roadway.
Service Laterals on private property - Tracer wire must terminate at an approved above-ground tracer wire access box, affixed to the
building exterior directly above where the utility enters the building, at an elevation not greater than 5 vertical feet above finished grade, or
terminate at an approved grade level/in-ground tracer wire access box, located within 2 linear feet of the building being served by the utility.
Long-runs, in excess of 2,500 linear feet - Tracer wire access must be provided utilizing an approved grade level/in-ground tracer wire
access box, located at the edge of the road right-of-way and out of the roadway. The grade level/in-ground tracer wire access box shall be
approved marker by the City of Pueblo.
Grounding
Tracer wire must be properly grounded at all dead ends/stubs.
Grounding of tracer wire shall be achieved by use of a drive-in magnesium ground rod with a minimum of 20ft of #12 red HDPE insulated
copper clad steel wire connected to anode (minimum 1.5 lb.) specifically manufactured for this purpose and buried at the same elevation as
the utility.
When grounding the tracer wire at dead ends/stubs, the ground rod shall be installed in a direction 180 degrees opposite of the tracer wire, at
the maximum possible distance.
When grounding the tracer wire in areas where the tracer wire is continuous and neither the mainline tracer wire or the ground rod wire will be
terminated at/above grade, install ground rod wire directly beneath and in-line with the tracer wire. Do not coil excess wire from ground rod
wire. In this installation method, the ground rod wire shall be trimmed to an appropriate length before connecting to tracer wire with a mainline
to lateral lug connector.
Where the ground rod wire will be connected to a tracer wire access box, a minimum of 2 ft. of excess/slack wire is required after meeting final
elevation.
DEPARTMENT
TRACER WIRE
1 OF 8
OF PUBLIC
WORKS
SPECIFICATIONS (1)
ENGINEERING
DIVISION
Installation
General
Tracer wire installation shall be performed in such a manner that allows proper access for connection of line tracing equipment, proper locating
of wire without loss or deterioration of low frequency (512Hz) signal for distances in excess of 1,000 linear feet, and without distortion of signal
caused by multiple wires being installed in close proximity to one another.
Tracer wire systems must be installed as a single continuous wire, except where using approved connectors. No looping or coiling of wire is
allowed.
Any damage occurring during installation of the tracer wire must be immediately repaired by removing the damaged wire and installing a new
section of wire with approved connectors. Taping and/or spray coating shall not be allowed.
Tracer wire shall be installed at the top of the pipe and secured (taped/tied) at 5' intervals.
Tracer wire must be properly grounded as specified.
Tracer wire on all service laterals/stubs must terminate at an approved tracer wire access box located directly above the utility, at the edge of
the road right-of-way but out of the roadway. (See Tracer wire Termination/Access)
At all mainline dead-ends, tracer wire shall go to ground using an approved connection to a drive-in magnesium ground rod, buried at the same
depth as the tracer wire. (See Grounding)
Mainline tracer wire shall not be connected to existing conductive pipes. Treat as a mainline dead-end and ground using an approved
waterproof connection to a ground rod buried at the same depth as the tracer wire.
All service lateral tracer wires shall be a single wire, connected to the mainline tracer wire using an approved mainline to lateral lug connector,
installed without cutting/splicing the mainline tracer wire.
In occurrences where an existing tracer wire is encountered on an existing utility that is being extended or tied into, the new tracer wire and
existing tracer wire shall be connected using approved splice connectors and shall be properly grounded at the splice location as specified.
Storm & Sanitary Sewer Systems
All service lateral tracer wires must be properly connected to the mainline tracer wire to ensure full tracing/locating capabilities from a single
connection point.
Lay mainline tracer wire continuously, by-passing around the outside of manholes/structures on the north or east side.
Tracer wire on all sewer laterals must terminate at the property line with a coil of 6 feet of tracer wire taped directly to the service lateral at the
edge of the road right-of-way or at an approved location.
The City of Pueblo Stormwater Department or Wastewater Department must be contacted to inspect tracer wire installation prior to backfilling
any infrastructure that connects to the City's storm sewer or sanitary sewer system.
Prohibited Products and Methods
The following products and methods shall not be allowed or acceptable:
Uninsulated tracer wire
Tracer wire insulations other than HDPE
Tracer wires not domestically manufactured
Non-locking, friction fit, twist on or taped connectors
Brass or copper ground rods
Wire connections utilizing taping or spray-on waterproofing
Looped wire or continuous wire installations, that has multiple wires laid side-by-side or in close proximity to one another
Tracer wire wrapped around the corresponding utility
Brass fittings with tracer wire connection lugs
Wire terminations within the roadway, i.e. in valve boxes, cleanouts, manholes, etc.
Connecting tracer wire to any conductive utilities
Testing
All new tracer wire installations shall be located using typical low frequency (512Hz) line tracing equipment, witnessed by the contractor,
engineer and facility owner as applicable, prior to acceptance of ownership.
This verification shall be performed upon completion of rough grading and again prior to final acceptance of the project.
Continuity testing in lieu of actual line tracing shall not be accepted.
DEPARTMENT
TRACER WIRE
2 OF 8
OF PUBLIC
WORKS
SPECIFICATIONS (2)
ENGINEERING
DIVISION
Products
The following products have been deemed acceptable and appropriate. These products are a guide only to help you choose the correct
applications for your tracer wire project.
Copper-Clad Steel (CCS) Tracer Wire
o Open Trench - Copperhead #12 High Strength part # 1230G-HS or approved equal.
o Directional Drilling/Boring - Copperhead Extra High Strength part # 1245G-EHS or approved equal.
o Pipe Bursting/Slip Lining - Copperhead SoloShot Extreme Strength 7 x 7 Stranded part # GPBX- 50 or approved equal.
Connectors
oCopperhead 3-way locking connector part # LSC1230C or approved equal.
oDryConn 3-way Direct Bury Lug: Copperhead Part # 3WB-01 or approved equal.
Termination/Access
o Non-Roadway access boxes applications: Tracer wire access boxes grade level Copperhead 3-way Direct Bury Lug adjustable lite
duty Part # LD14G2T-SW or approved equal.
o Concrete / Driveway access box applications: Tracer wire access boxes grade level Copperhead Part # CD14G2T-SW or
approved equal.
Grounding
o Drive in Magnesium Ground Rod: Copperhead Part # ANO-12 (1.5 lb.) or approved equal.
Manufacturer Product Options:
Copperhead products or approved equal.
DEPARTMENT
TRACER WIRE
3 OF 8
OF PUBLIC
WORKS
SPECIFICATIONS (3)
ENGINEERING
DIVISION
NO SCALE
DEPARTMENT
TRACER WIRE SAMPLE4 OF 8
OF PUBLIC
WORKS
STORM SEWER PLAN
ENGINEERING
DIVISION
NO SCALE
LATERAL PLAN
NO SCALE
LATERAL PROFILE
NO SCALE
DEPARTMENT
TRACER WIRE AT STORM5 OF 8
OF PUBLIC
WORKS
SEWER LATERAL DETAIL
ENGINEERING
DIVISION
WARNING:
INLET OR MANHOLE LOCATED
IN A PAVED SURFACE
NO SCALE
DEPARTMENT
TRACER WIRE6 OF 8
OF PUBLIC
WORKS
MISCELLANEOUS DETAILS
ENGINEERING
DIVISION
NO SCALE
DEPARTMENT
TRACER WIRE SAMPLE7 OF 8
OF PUBLIC
WORKS
SANITARY SEWER PLAN
ENGINEERING
DIVISION
SEWER SERVICE PLAN
NO SCALE
SEWER SERVICE SECTION
NO SCALE
DEPARTMENT
TRACER WIRE AT SANITARY8 OF 8
OF PUBLIC
WORKS
SEWER SERVICE DETAIL
ENGINEERING
DIVISION