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TRACETAPE™ DETECTABLE TAPE
BORETRACE™ DETECTABLE TAPE
3M™ PathMarking Tapes
Washington SPECIFICATIONS & Guidelines
Washington State Department of Transportation
WSDOT Standard Specifications for Road, Bridge, and Municipal Construction 2022
Detectable Marking Tape
“Detectable marking tape shall be installed over nonmetallic water lines including services lines. The tape shall be placed approximately 1 foot above the top of the line and shall extend its full length. Detectable marking tape shall meet the requirements of Section 9-15.18.”
Irrigation Systems, Construction Requirements, Excavation
“… Detectable marking tape shall be placed in all trenches 6 inches directly above, parallel to, and along the entire length of all nonmetallic water pipes and all nonmetallic and aluminum sleeves, conduits, and casing pipes. The width of the tape and installation depth shall be as recommended by the manufacturer for the depth of installation or as shown in the Plans.”
Fiber Optic Conduit
"Where conduit to contain fiber optic cable or conduit identified to contain future fiber optic cable is installed by open trenching, Detectable Underground Warning Tape shall be placed 12-inches above the conduit unless otherwise detailed in the Plans. Detectable Underground Warning Tape shall extend 2-feet into boxes or vaults. Splicing of the tape shall be per the tape manufacturer’s recommended materials and procedures."
Detectable Marking Tape
“Detectable marking tape shall consist of inert polyethylene plastic that is impervious to all known alkalis, acids, chemical reagents, and solvents likely to be encountered in the soil, with a metallic foil core to provide for the most positive detection and pipeline location.
The tape shall be color coded and shall be imprinted continuously over its entire length in permanent black ink indicating the type of line buried below and shall also have the word “Caution” prominently shown. Color coding of the tape shall be as follows:
Utility - Tape Color
Water - Blue
Sewer - Green
Electric - Red
Gas/Oil - Yellow
Telephone/CATV - Orange
Non-Potable Water - Purple
The width of the tape shall be as recommended by the manufacture based on depth of installation.”
Detectable Underground Warning Tape
"Detectable Underground Warning tape shall be Orange imprinted in black lettering with the message “FIBER OPTIC CABLE BURIED BELOW” or equal. The warning tape shall be polyethylene with a metallic backing. The polyethylene shall be a minimum 4 mils thick and 3 inches wide"
Call Before You Dig
Washington Utility Notification Center
811 or 800-424-5555
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