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Waste Water Engineering

Waste Water Engineering
For design of sewers, percentage of sewage discharge is assumed

65 to 70%
0.85
75 to 80%
70 to 75%

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Waste Water Engineering
House connections to the laterals is generally made by

Glazed stonewares
Cast iron
R.C.C.
P.C.C.

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Waste Water Engineering
A rain sanitary sewer is constructed to carry

Surface water
Sanitary sewage
Ground water
Storm sewage

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Waste Water Engineering
The recommended detention period for grit chambers is

1 minute
2 minutes
5 minutes
3 minutes

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Waste Water Engineering
If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is

1 in 60
1 in 100
1 in 120
None of these

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Waste Water Engineering
If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is

None of these
1 in 100
1 in 120
1 in 60

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