weight of water, the hydraulic mean depth of the sewer and the bed slope w is the unit of the sewer, then the tractive force exerted by flowing water, is________________________?

Related Mcqs:

The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is__________________?

A. 0.10 cumec B. 0.12 cumec C. 0.15 cumec D. 0.20 cumec...

Inter-distance between ventilation columns in a sewer line is kept__________________?

A. 25 to 50 m B. 50 m to 100 m C. 100 m to 150 m D. 150 m to 300 m...

If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is___________________?

A. D B. 1.25 D C. 1.5 D D. 1.75 D...

Sewer manholes are generally provided at________________?

A. The change of gradient B. The change of direction C. The junctions of sewers D. All of these...

3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is______________________?

A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l...