Question about Hand Tools
Manhole covers are made in ashape round to prevent it to faal inside manholes. Unlike square, rectangles or triangles they can easily fall just by twisting it or by make it stand
Posted on Sep 11, 2019
A round cover follows the shape of the tunnel below, which is more likely to be round, being deep, square holes are harder to shape.The original lids were sawn from large round tree trunks.
Posted on Oct 21, 2018
Hi! I'm sure there are a few more reasons why manhole covers are round, but here are some that I can think of: The round shape means that they can't fall into the manhole (like a square could). A round shape also means that it has a smaller surface area, so less material is needed to make them, making them cheaper to produce. Round manhole covers are also easier to move since they can be rolled on the ground.
Posted on Jan 16, 2014
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Posted on Jan 02, 2017
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