NM Plumbing Inspector Practice Questions - New Mexico CID Plumbing Inspector Examination Exam

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A contractor asks to flatten a 4 inch building drain to 1/8 inch per foot because the street sewer is shallow. Under UPC 2021 Section 708.1, when may the inspector accept that slope?

Anytime the pipe is 3 inches or larger Only if the pipe is 4 inches or larger, 1/4 inch per foot is impractical, and the AHJ first approves it Never; 1/4 inch per foot is mandatory on every drain Only if the drain is plastic

Correct Answer:

Only if the pipe is 4 inches or larger, 1/4 inch per foot is impractical, and the AHJ first approves it

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