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Waste Water Engineering

Waste Water Engineering
If the discharge of a sewer running half is 628 1.p.s., i = 0.001, and n = 0.010, the diameter of the sewer, is

1.69 m
1.59 m
1.39 m
1.49 m

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Waste Water Engineering
The grit and silt of the grit chambers, may not be used for

Both A and B
Neither A nor B
Raising low lying areas by dumping
Concreting

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Waste Water Engineering
The normal values of over flow rates for sedimentation tanks using coagulant, ranges between

80,000 to 100,000 litres/sqm/day
50,000 to 60,000 litres/sqm/day
40,000 to 50,000 litres/sqm/day
25,000 to 35,000 litres/sqm/day

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Waste Water Engineering
For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by

All listed here
Frubling
Lloyd Davis
Kinchling

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Waste Water Engineering
The sewer which collects the discharge from a collecting system and delivers it to a treatment plant, is known

Sewer outfall
Lateral sewer
Branch sewer
House sewer

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Waste Water Engineering
In sewers designed with self cleansing velocity,

The bottom is silted
The bottom is scoured
Neither silting nor scouring occurs at the bottom
Both silting and scouring occur at the bottom

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