Civil Engineering - Waste Water Engineering

26. 

Drop manholes are the manholes

A. without entry ladders
B. without manhole covers
C. with depths more than 3.5 m
D. having drains at different levels.

Answer: Option D

Explanation:

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27. 

Boussinesq's equation for ascertaining unit pressure at a depth H on sewers due to traffic loads, is

A.
B.
C.
D.
E. none of these.

Answer: Option A

Explanation:

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28. 

The laying of sewers is done with

A. magnetic compass
B. theodolite
C. level
D. clinometer
E. plane table.

Answer: Option C

Explanation:

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29. 

The rational formula for peak drainage discharge, was evolved by

A. Fruhling
B. Lloyd David
C. Kuichling
D. All of these.

Answer: Option D

Explanation:

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30. 

The sewage treatment in septic tanks is due to

A. anaerobic decomposition
B. aerobic decomposition
C. parasitic decomposition
D. none of these.

Answer: Option A

Explanation:

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