NM CID MM-2 Practice Questions - New Mexico CID MM-2 Natural Gas Fitting Examination Exam

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An underground natural-gas service will be polyethylene. Under UMC Chapter 13 / UPC 1210.1, what is the ordinary minimum cover, and when must cover increase?
Correct Answer:
12 inches of cover, increased to 18 inches where external damage from external forces is likely; if 12 inches cannot be provided, install the pipe in conduit or bridge (shield) it

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