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0 votes	1171 views	2 answers	In sewers the gas generally found, is updated 11 years ago by Civil Engineer
0 votes	959 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 11 years ago by Civil Engineer
0 votes	946 views	2 answers	The standard B.O.D. of water is taken for updated 11 years ago by Civil Engineer
0 votes	2798 views	4 answers	The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known updated 11 years ago by Civil Engineer
0 votes	1701 views	1 answer	The presence of free ammonia in sewage, is detected by updated 11 years ago by Civil Engineer
0 votes	2412 views	1 answer	The liquid wastes from kitchens, bath rooms and wash basins, is not called updated 11 years ago by Civil Engineer
0 votes	1361 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 11 years ago by Civil Engineer
0 votes	947 views	3 answers	A drop manhole is provided if updated 11 years ago by Civil Engineer
0 votes	928 views	1 answer	In case of Imhoff tanks, updated 11 years ago by Civil Engineer
0 votes	963 views	2 answers	Sewer ventilating columns are generally placed at updated 11 years ago by Civil Engineer