Waste Water Engineering
‘Cowl’ is provided at

Upper end of ventilating column
Lower end of ventilating column
Upper end of the manhole
First step in manhole

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Waste Water Engineering
The stone ware sewers

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

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