Waste Water Engineering
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

0.70 m/sec
0.50 m/sec
0.75 m/sec
0.60 m/sec

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Waste Water Engineering
The stone ware sewers

After casting are dried and burnt at temperature 150°C, 700°C and 1200°C
Are manufactured from clays and shale
Are used for carrying sewage and drainage from houses
All listed here

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