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Why manhole are round and not square |
luvsanro
Joined: Jan 22, 2004
Posts: 156
From: SAN
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Why sewerage manhole are round and not square?
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deluded
Joined: Sep 14, 2005
Posts: > 500
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that's cos only if they're round would it be impossible for the cover to drop through the hole. it's simple physics really. as long as the diameter of the cover is more than that of the hole, no matter how you orientate the cover, it'll never be able to drop through the hole. hope that answers your question. =)
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plasmadog
Joined: May 06, 2004
Posts: > 500
From: Beantown, India
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I hear this is a very important question they ask you when you're applying for an MBA!
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BlueQuill
Joined: Jul 29, 2005
Posts: 419
From: India
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To give it a uniform shape
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JK
Joined: Feb 24, 2005
Posts: > 500
From: S. Africa - JOZI
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Quote:
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On 2005-10-15 07:31:55, deluded wrote:
that's cos only if they're round would it be impossible for the cover to drop through the hole. it's simple physics really. as long as the diameter of the cover is more than that of the hole, no matter how you orientate the cover, it'll never be able to drop through the hole. hope that answers your question. =)
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A square would fall in!!
I knew that to, I tawt I was the only fool that knows a whole lot of useless crap!!!  |
deluded
Joined: Sep 14, 2005
Posts: > 500
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haha.. @786kbr, that makes the two of us huh? maybe you should start a thread for all these quirky Q&A.
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Erotomaniac
Joined: Sep 27, 2005
Posts: 82
From: Novaliches
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this is an old one.
Quote:
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On 2005-10-15 07:31:55, deluded wrote:
as long as the diameter of the cover is more than that of the hole, no matter how you orientate the cover, it'll never be able to drop through the hole. hope that answers your question. =) |
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triangles won't fall too right? |
deluded
Joined: Sep 14, 2005
Posts: > 500
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even triangles can fall through the hole when you orientate them in certain positions. =)
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luvsanro
Joined: Jan 22, 2004
Posts: 156
From: SAN
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I think round one takes less area & has better orientation as compare to square & Triangle.
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mrao
Joined: Nov 11, 2004
Posts: > 500
From: Mumbai, India
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Quote:
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On 2005-10-16 08:23:58, deluded wrote:
even triangles can fall through the hole when you orientate them in certain positions. =)
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That would depend on what kind of a triangle it is...  An equilateral one may not fall in....but others could
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blayv
Joined: Oct 24, 2004
Posts: > 500
From: Srbija
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You would also have to rotate lid to fit it in hole, if it weren't round.
Now think how heavy that steel lid is...
[ This Message was edited by: blayv on 2005-10-18 20:11 ] |
deluded
Joined: Sep 14, 2005
Posts: > 500
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@mrao, @blayv, agreed. :)
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gelfen
Joined: Nov 22, 2003
Posts: > 500
From: Melbourne, Australia
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a circle is also the shape that allows the lid to be manufactured from the smallest amount of material and still permit a person to fit through the hole.
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Erotomaniac
Joined: Sep 27, 2005
Posts: 82
From: Novaliches
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"That would depend on what kind of a triangle it is... An equilateral one may not fall in....but others could"
That's what I was referring to. An Equi triangle.
distance between a tip to its opposite side and a tip to another tip are the farthest distances on the Equi tri. Both of them won't fit through the hole. |
neonismo
Joined: Oct 18, 2002
Posts: 254
From: Melbourne, Australia
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Any triangle will fall through on its largest edge(s).
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Posted: 2005-10-15 07:18
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