Calculate in meters the length of a rectangular settling tank to treat 14,000 cubic meters of water per day. Use the following design criteria: The depth of the tank is 6 m, the detention time of the water in the tank is 5 hours, and the length to width ratio is 3:1.

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Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?