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An 18-in. sewer, n = 0.013, is 15,000 ft long and laid on a uniform grade. Difference in elevation of the two ends is 4.8

An 18-in. sewer, n = 0.013, is 15,000 ft long and laid on a uniform grade. Difference in elevation of the two ends is 4.8 ft. Find velocity and discharge when the sewer is flowing 0.6 full.

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