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12 January, 11:09

Why do Man holes (road) build by use only circular type?

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  1. 12 January, 14:40
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    Answer: Manholes are usually round, primarily because roundness is the best shape to resist the compression of the earth; covers are round because they are easier to manufacture than square or rectangular shapes, they are easier to move by rolling, and they can't fall into the opening.
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