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In: Civil Engineering

A 900mm diameter conduit 3600m long is laid at a uniform slope of 1 in 1500...

A 900mm diameter conduit 3600m long is laid at a uniform slope of 1 in 1500 and connects two reservoirs. When the levels in the reservoirs are low the conduit runs partly full and it is found that a normal depth of 600mm gives a rate of flow of 0.322m^3/s.

The Chezy coefficient C is given by Km^n where K is constant,m is the hydraulic mean depth and n=1/6.Neglecting losses of head at entry and exit obtain

  1. the value of K,
  2. the discharge when the conduit is flowing full and the difference in level between the two reservoirs is 4.5m

answer: (a)67.6 (b)0.562m^3/s

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