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Design a circular storm sewer to be laid on a minimum slope to carry a peak discharge of 10 cfs. Consider that the

depth at the peak flow is 0.7 time the diameter of the sewer. The minimum flow to be maintained is 3 cfs and the velocity at minimum flow should be 2 ft/s. The Manning's roughness coefficient is 0.013.

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manning formula =1/n R 2/3 x S 1/2 Q=A V R=D/4;hydraulic raduis for circular pipes... View the full answer

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