NM CID GF-9 Practice Questions - New Mexico CID GF-9 Utility Lines Contractor Examination Exam

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When installing ductile-iron pipe 24 inches and smaller in rock, DIPRA’s Installation Guide requires rock to be kept no closer than which distance from the bottom and sides of the pipe?

2 inches 6 inches 18 inches 24 inches

Correct Answer:

6 inches

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