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The manhole in which vertical pipe is used for the transfer of sewage from branch to main sewer is __________

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in Environmental Engineering by (81.4k points)
The manhole in which vertical pipe is used for the transfer of sewage from branch to main sewer is __________

(a) Deep manhole

(b) Ramp

(c) Drop manhole

(d) Normal manhole

I got this question in an internship interview.

This interesting question is from Devices Associated with Sewer topic in section Construction of Sewers, Sewer Appurtenances and Sewage Pumping of Environmental Engineering

1 Answer

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Best answer
Right option is (c) Drop manhole

Explanation: Drop manholes are provided with vertical pipe so that the sewage does not fall on the people working at manhole.

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