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

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A 90-degree bend on a pressure storm or water line will be restrained with a concrete thrust block. The block must bear against:

Fresh loose backfill placed the same day Undisturbed soil, with the joint and bolts left accessible The polyethylene wrap only, with no soil contact The trench shield, which can be removed after the pour

Correct Answer:

Undisturbed soil, with the joint and bolts left accessible

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