2007-02-14 01:08:16 · 11 answers · asked by Basement Bob 6 in Education & Reference ➔ Trivia
square manholes can be turned in such a way as to fall into the hole. A circle is the same diameter no matter which way you turn it.
2007-02-14 01:11:56 · answer #1 · answered by Nick C 2 · 3⤊ 0⤋
Round Manhole Covers
2016-11-07 08:14:39 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Well!!!!!!!! Just because the man holes are round!!!! The hole below the cover is round because a cylinder is the strongest shape against the compression of the earth around it. Also, the term "manhole"implies a passage big enough for a man, and a human bein g climbing down a ladder is roughly circular in cross-section. So a cylindrical pipe is the natural shape for manholes. The covers are simply the shape needed to cover up a cylinder.
2016-05-23 21:58:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Square ones can fall back into the hole on the angle, round ones wont
2007-02-14 01:35:21 · answer #4 · answered by Anonymous · 1⤊ 0⤋
too many decisions to figure out on fitting the square cover. By the time I got it right I dropped it in. Phhhfff!!!!
2007-02-14 13:35:25 · answer #5 · answered by Wattsup! 3 · 1⤊ 0⤋
because a round cover cannot fall down a round hole when someone needs to lift it. a square lid can fall into the hole.
2007-02-14 01:12:52 · answer #6 · answered by Anonymous · 2⤊ 0⤋
Round covers are easier to get off and on, opposed to square covers.
2007-02-14 05:49:00 · answer #7 · answered by Anonymous · 0⤊ 3⤋
the circle is a stronger structure, a square manhole cover would buckle easier under pressure
2007-02-14 03:46:40 · answer #8 · answered by wanna_be_md 3 · 0⤊ 4⤋
Circles take up less space than squares. It's much easier to cover a circle than a square.
2007-02-14 02:29:33 · answer #9 · answered by superhappytacklepounce 2 · 1⤊ 3⤋
It's more simple to cover a round hole with a round cover.
Thumbs Down? Haters!
2007-02-14 01:14:52 · answer #10 · answered by Polynomial 3 · 2⤊ 5⤋