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Why manhole are round and not square |
blackspot
Joined: Sep 06, 2004
Posts: > 500
From: Philippines
PM |
Wow, an entire thread for just 1 question. 
I know of 4 practical reasons 2 of which were mentioned already.
1. It's easy to cover & uncover it - you don't have to position it properly.
2. The cover will not fall into the hole because the diameter of the cover is always larger than the diameter of the hole in any orientation.
3. The circular shape is more efficient as it gives a larger opening for a given area compared to other shapes.
4. Round shaped covers are easier to move around by simply rolling it.
resistance is futile. |
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deluded
Joined: Sep 14, 2005
Posts: > 500
PM |
haha.. i wonder if the original poster is still interested in the answers.
This message was posted from a WAP device |
blayv
Joined: Oct 24, 2004
Posts: > 500
From: Srbija
PM |
1 more thing.
round sheped lid is more resistant to torsion force than tri/quadrangular. |
luvsanro
Joined: Jan 22, 2004
Posts: 156
From: SAN
PM, WWW
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Quote:
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On 2005-10-20 06:57:50, deluded wrote:
haha.. i wonder if the original poster is still interested in the answers.
This message was posted from a WAP device
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Hey man i am still lookin at the thread..
its a good GK kinda thing for discussion.
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Posted: 2005-10-20 06:43
