A pipe culvert with a diameter of 1.2 m is designed to carry a discharge of 5 m³/s. The required headwater for this culvert is:

A pluvia drainage channel, in a city where large sudden rains occur, has the shape shown in the figure. It is made of unfinished concrete and has a 0.5 percent slope. The sectionhigher allows large volumes to be transported through the channel. Determine the normal discharge for depths of 0.5 m and 2.5 m

A high overflow spillway with P/H> 1.33 has a maximum discharge of 5,000 cfs with a maximum head of 15 ft. Determine the design head (in feet), spillway crest length (in feet), minimum pressure head (in feet) and the minimum pressure (in psi) on the spillway. Figure 6.2 Discharge Coefficient for the WES standard spillway shape Correction factor PHICH 1.04 1.03 1.02 1.01 1.00 0.99 0.98 0.6 0.5 0.4 0.3 0.2 0.1 0 OC Upstream face slope: 3 on 3 0.70 3 on 1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 PIHd 3 on 2 0.75 1.3 0.80 1.2 1.1 1.0 0.9 0.8 0.7 PIH=0.20- 0.33- 0.67 1.00- H₂ 0.85 0.90 C/Co in which Co = 4.03 1.33 or greater Q=CLH5 H₂-velocity head He design total head H.- actual total head H₂ 0.95 1.00

A 3 metre wide rectangular channel flowing at its normal depth of 0.8m carries a discharge of 9.5m³/s. The bed slope of the channel is (a) steep (b) critical (c) mild (d) adverse