Minnesota Specifications & Guidelines

2565.3.I.1 Construction Requirements, Underground Wiring

"Install underground non-detectable marking tape 12 to 18 in above the interconnect cable or conduit."

↳ Specification Document (see page 764)

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3806.2 Underground Non-Detectable Marking Tape, Requirements

"A General
Use underground non-detectable marking tape meeting the following:
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      (1) 3 in wide
      (2) Lead free
      (3) American Public Works Association (APWA) Uniform Color Code for marking underground facilities
      (4) 4.0 mil minimum thickness in accordance with ASTM D2103-05, Standard Specifications for Polyethylene Film and Sheeting
      (5) Tensile strength minimum 2.750 psi in accordance with ASTM D882-02, Standard Test Method for Tensile Properties of Thin Plastic Sheeting
      (6) Elongation minimum 500 percent in accordance with ASTM D882-75B, Standard Test Method for Tensile Properties of Thin Plastic Sheeting for Elongation
      (7) Printability ≥ 40 Dynes in accordance with ASTM D2578, Standard Test Method for Wetting Tension of Polyethylene and Polypropylene Films
B Communication Line Marking Tape
In addition to the general requirements for non-detectable marking tape in this section use marking tape for underground communication lines meeting the following:

      (1) Orange
      (2) Black lettering imprinted with the inscription, 'CAUTION – MnDOT COMMUNICATION LINE BELOW'

C Electric Line Marking Tape
In addition to the general requirements for non-detectable marking tape in this section use marking tape for underground electric lines meeting the following:

      (1) Red
      (2) Black lettering imprinted with the inscription, 'CAUTION – MnDOT ELECTRIC LINE BELOW'"

↳ Specification Document (see pages 1007-1008)

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3806.3 Underground Non-Detectable Marking Tape, Sampling and Testing

"The Department reserves the right to sample, test, inspect, and accept or reject underground non-detectable marking tape based on its own tests."

↳ Specification Document (see page 1008)