What are drop manholes and lamp manholes?

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written 6.8 years ago by

teamques10 ★ 70k

Drop manhole:

• The drop manhole is a type of manhole in which a vertical pipe is provided.

• It is just provided just before the intersection of two sewer pipes. Sometimes it happens that the gradient difference between the two sewer pipe around 0.5m or more. So directly allowing …

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