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pipe and gutter
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Dear convert-me.com forum visitors,
Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.
All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on convert-me.com FaceBook page
Thank you for being with us and sorry for any inconveniences this could caused.
3 posts
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pipe and gutter
by Rick » Thu Jul 03, 2008 3:49 am
We have a 22" ID pipe under a driveway. Can its maximum water runoff volume be contained with a 32" wide and 10" deep gutter? How do we calculate the two? The gutter is a crescent ( shape or semicircle with the 10" depth at the deepest.
- Rick
Re: pipe and gutter
by Guest » Thu Jul 03, 2008 5:10 am
Rick wrote:We have a 22" ID pipe under a driveway. Can its maximum water runoff volume be contained with a 32" wide and 10" deep gutter? How do we calculate the two? The gutter is a crescent ( shape or semicircle with the 10" depth at the deepest.
I would start by comparing areas. The 22" pipe has a radius of 11" and an are of pi*11*11 = 121*pi.
The gutter (hopefully) is approximateky an ellipse with semidiameters of 10" and 16" and an area of pi*10*16 = 160*pi, a little bigger.
In flow, surface roughness also matters. is the "gutter" a manufactured material about as smooth as the pipe, or is it a ditch with grass? In the first case, the gutter probably has a little more capacity, in the second case, the pipe.
The other question is whether there is enough downward slope to the system to move enough water. However, the pipe and the gutter are probably in reasonable balance.
- Guest
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3 posts
• Page 1 of 1