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0 votes	1315 views	3 answers	If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is updated 9 years ago by Civil Engineer
0 votes	1180 views	3 answers	The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is updated 9 years ago by Civil Engineer
0 votes	1038 views	2 answers	Afive day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is updated 9 years ago by Civil Engineer
0 votes	788 views	2 answers	The design period in years for pumping plants, is updated 9 years ago by Civil Engineer
0 votes	792 views	1 answer	The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is updated 9 years ago by Civil Engineer
0 votes	797 views	2 answers	In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient, updated 9 years ago by Civil Engineer
0 votes	801 views	2 answers	Which one of the following statements regarding septic tanks is wrong : updated 9 years ago by Civil Engineer
0 votes	796 views	1 answer	Which one of the following gases is most significant as air pollutant updated 9 years ago by Civil Engineer
0 votes	536 views	0 answers	In trickling filter, B.O.D. is reduced to updated 9 years ago by Civil Engineer
0 votes	796 views	2 answers	The rainfall at any place may be determined by updated 9 years ago by Civil Engineer