Water flows in a 120-cm-diameter sewer finished concrete

Question

1. Water flows in a 2-m-diameter sewer (finished concrete) with S ¼ 0.0016. Estimate the flow rate if the depth is

(a) 50,

(b) 100,

(c) 150, and

(d) 199 cm.

2. Water flows in a 120-cm-diameter sewer (finished concrete) with S ¼ 0.001 at a flow rate of 0.4 m3=s. What is the expected depth of flow?