New Hampshire Specification & Guidelines

New Hampshire Department of Transportation

NHDOT Standard Specifications, 2016

614 2.4 Electrical Conduit, Materials

"Plastic warning tape shall be American Public Works Association standard 6” wide polyethylene color coded and marked in accordance with the utility industry standards for marking underground utility lines."

> Open Specification Document

614 3.4.6 Electrical Conduit, Construction Requirements, Backfilling

"A plastic warning tape shall be installed over all conduits at approximately 12” below final grade."

> Open Specification Document

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