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

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A 12-inch water main runs 1,320 feet. Fittings add the equivalent of 80 feet of pipe for friction. Using a target velocity of 5 feet per second, what is the approximate flow in gallons per minute? (Area of 12-inch pipe ≈ 0.785 ft²; 1 ft³ = 7.48 gal.)
Correct Answer:
1,760 gpm

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