NM CID GF-4 Practice Questions - New Mexico CID GF-4 Drainage Or Flood Control Systems Contractor Examination Exam

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ANSI/AWWA C600, as cited by DIPRA, limits gravel bedding and backfill immediately adjacent to ductile-iron pipe to a maximum particle size of:

2 inches 8 inches 12 inches No limit if the pipe has polyethylene encasement

Correct Answer:

2 inches

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