1.Air at 90 psia and 70 degrees F flows through a 4.5 inch diameter welded steel pipe (e = 0.00015) at 60 lb/min. Find the friction head loss and pressure drop in 200 ft of this pipe. Assume the air to be of constant density.
2.Determine the tensile stress developed in member AB due to a load of P=500# at D. The member AB is 1/2" thick and 2" wide.
3.In the design of a simply supported skew bridge, which direction of reinforcement should be provided? explain with the help of diagram