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When a drainage system is connected to a main drainage channel, a segment of short pipe is used. What is the reason of such arrangement?

When a drainage system is connected to a main drainage channel, a segment of short pipe is used. What is the reason of such arrangement?

There are three scenarios of such connection arrangement:

(a) a new drainage system is connected to an existing drainage channel
(b) an existing drainage system is connected to a new drainage channel
(c) a new drainage system is connected to a new drainage channel.

For all scenarios, what engineers consider is the total amount of differential settlement or lateral movement to be encountered between the drainage system and main drainage channel. For scenario (b) and (c), it is very likely that substantial differential settlement will occur and this will cause damage to the connecting concrete pipes. Therefore a segment of short pipes are designed so that they serve to provide flexibility to the pipes in case of uneven settlement occurring between drainage system and main drainage channels.

Short pipe

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This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.

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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

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