NM CID GF-3 Practice Questions - New Mexico CID GF-3 Canals, Reservoirs Or Irrigation Systems Contractor Examination Exam

Concrete canal lining typically includes contraction (control) joints because:

Joints increase seepage by design The slab must have planned crack locations to relieve shrinkage and temperature movement OSHA requires a joint every 4 feet for egress Joints replace the need for a subgrade

Correct Answer:

The slab must have planned crack locations to relieve shrinkage and temperature movement

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