Waste Water Engineering
The pressure exerted by

The sewage when running full from inside, is called internal pressure
All listed here
The internal pressure if any, causes tensile stress in the pipe material
Pressure sewers are designed to be safe in tension

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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
Are used for carrying sewage and drainage from houses
All listed here

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