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Why Manhole Covers are Round?
Difficulty Level

Why are manhole covers round? Do manhole covers really need to be circular?

View Answer Comments(3)

A round manhole cover cannot fall through its circular opening, whereas a square manhole cover could fall in if it were inserted diagonally in the hole, causing lots of problems.

Guest Said:Posted On 2017-05-23

Because the round covers cannot go inside the manhole,wheras covers of other shapes can.

Guest Said:Posted On 2017-01-07

Rightly said Lid cannot be put inside.

Guest Said:Posted On 2015-11-11

Lid cannot be put inside.