Question: A brick rectangular channel, with a slope of 0.002, is designed to carry 230 ft3/s of water in uniform flow. There is an argument over

A brick rectangular channel, with a slope of 0.002, is designed to carry 230 ft3/s of water in uniform flow. There is an argument over whether the channel width should be 4 ft or 8 ft. Which design needs fewer bricks? By what percentage?

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