Waste Water Engineering
In a residential colony, sewers of diameters 100 mm, 150 mm and 225 mm were laid with a gradient 1 in 120. Which portion of the sewage system does not choke in due course of time?

150 mm dia
225 mm dia
All of these
100 mm dia

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Waste Water Engineering
The sewer pipes

All listed here
Are designed for generating self-cleansing velocities at different discharge
Carry sewage as gravity conduits
Should resist the wear and tear caused due to abrasion

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Waste Water Engineering
The stone ware sewers

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

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