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0 votes	1031 views	2 answers	In sewers the gas generally found, is updated 9 years ago by Civil Engineer
0 votes	790 views	1 answer	To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is updated 9 years ago by Civil Engineer
0 votes	796 views	2 answers	The standard B.O.D. of water is taken for updated 9 years ago by Civil Engineer
0 votes	2597 views	4 answers	The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known updated 9 years ago by Civil Engineer
0 votes	1539 views	1 answer	The presence of free ammonia in sewage, is detected by updated 9 years ago by Civil Engineer
0 votes	2219 views	1 answer	The liquid wastes from kitchens, bath rooms and wash basins, is not called updated 9 years ago by Civil Engineer
0 votes	1221 views	1 answer	In a city the ratio of the drainage to sewage is 20, the percentage discharge passing through non-monsoon periods, is updated 9 years ago by Civil Engineer
0 votes	778 views	3 answers	A drop manhole is provided if updated 9 years ago by Civil Engineer
0 votes	781 views	1 answer	In case of Imhoff tanks, updated 9 years ago by Civil Engineer
0 votes	832 views	2 answers	Sewer ventilating columns are generally placed at updated 9 years ago by Civil Engineer