A 20-fr-wide rectangular channel is crossed by a bridge which is supported by 3-fi: square piers as.


A 20-fr-wide crosswise means is crossed by a bridge which is protected by 3-fi: clear piers as shown in Figure P5.57. The discharge in the means is 1000 cfs and the profundity upstream of the piers is 10 ft. If the profundity right downstream is 9.5 ft, what is the aggregate unimportant soundness acting on each pier? What is the unimportant hydrostatic soundness on each pier?