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[despite the fact that this is under "rhetorical questions" I will answer it anyways]
Man-holes are round because no matter which way you turn the lid, it will never fit into the round hole (With a slightly smaller diameter). If it were any other shape, like a square or triangle, it would be possible to drop the lid in the hole by turning it diagonally.
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∙ 14y ago
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Why are manhole covers in the us round instead of square?
The round manhole cannot fall into the hole no matter which way you turn it.
What is rim elevation of a manhole?
Rim, on a manhole, is the elevation of the top of the cover on the manhole. In a roadway the rim will at be final grade, in grass they can be sumped, flush or stick up.
What is the obvert elevation of a manhole?
The obvert elevation of a pipe is the elevation of the inner top surface of the pipe (as opposed to "invert" which is the inner bottom surface of the pipe). Invert (and obvert) is usually used in reference to pipe and not manholes, since the invert elevation is where the water flow calculations begin. Based on this interpretation, the obvert (at a manhole) can be measured as the distance from the manhole rim to the inside top of the pipe(s).
Are round edges or square edges more aerodynamic?
round
Does brown rhyme with round?
no brown does npot rime with round
Why are manhole covers in the us round instead of square?
The round manhole cannot fall into the hole no matter which way you turn it.
Why is it better to have a round Manhole cover than a square one?
A round manhole cover will not fall through the hole, A square one will.
How do you spell manhole covers?
"Manhole covers" are simply spelled "manhole covers". The reason most of them are perfectly round is that a round cover cannot slip down into a hole that is even just slightly smaller than the cover (as can oblongs or squares).
Why are man hole covers round?
Round manhole covers are generally used over square manholes because they cannot fall through the manhole openings. There is a chance that if square manhole covers are used they can be turned at an angle and fall through the manhole opening. Round manhole covers can be moved more easily as well.
Why is it eaisier for manhole covers to be round?
1) That way, they can easily be moved, by rolling them. 2) They can't accidentally fall into the manhole.
Why do you think manhole shapes like circle?
because for any person to get inside a manhole, you would think it was shaped like a round circle.
Why does the the manhole cover created round?
A square one would fall through itself but with a round one this is impossible
Why is a manhole round?
becaus no mater witch way you turn the lid it stil fits in.
Why are manholes covered round?
Manhole covers are round because that is the only shape that will not fall in on itself. Having a round cover with a lip, there is no way the cover can fall or be forced into the hole it covers.
When did The Manhole happen?
The Manhole happened in 1988.
What is the minimum spacing between manhole to manhole?
30ft
When was The Manhole created?
The Manhole was created in 1988.
