1.The rate of flow through a trapezoidal open channel is 20 m^3/s and the mean velocity of flow is m/s . the side slope is 1:1 and the bed slope is 1 in 5000. Assume Chezy's constant C as 60, find the bottom width and the depth of water channel.
2.A simply supported beam carries with a span of 7.5 m carries a uniformly distributed load of 25 N/mm. if the maximum allowed deflection of the beam is 1/325 of its span, detemine the cross-sectional dimensions of the beam. assume the beam has a rectangular cross-section with an aspect ratio of 4. verfiy your design against defection?