Water at 60° F flows by gravity from a large reservoir at a high elevation to a smaller one at a lower elevation through a 60-ft-long, 2-in-diameter cast iron piping system that includes four 90° flanged elbows, a well-rounded entrance, a sharp-edged exit, and a fully open gate valve. Taking the free surface of the lower reservoir as the reference level, determine the required elevation z1 of the higher reservoir if the flow rate is 13 ft/min. Use a = = 1.04.

Q3/ Three opening of head regulator with 2 m each. The head between US and DS equals to 1.75 m. and the vertical opening of the gates is 2.5 m. if the water in the DS decreases by 0.25 m. Use cd as 0.62 and find the following: a- the vertical gate opening required to maintain the same amount of the discharge if the water level in the D/S decreases by 0.25 m b- the vertical gate opening required to maintain the same amount of the discharge if the water level in the U/S and D/S rise by 0.5 m

ASAP within 1 hrs! Answer all parts.

B-calculate the specific energy in trapezoidal channel which has a bottom width of (loft) and side slope (1:1) the rate of flows (180ff/ at depth (3ft) sec