top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Why manholes are round?

+3 votes
143 views
posted Nov 25, 2014 by anonymous

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

+2 votes

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. Circular covers don't need to be rotated or precisely aligned when placing them on the opening. A round manhole cover is easily moved and rolled.

answer Nov 25, 2014 by Manikandan J
...