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Old 07-04-2013, 08:44 PM
agrostis agrostis is offline
LawnSite Silver Member
Join Date: Nov 2009
Location: Winston-Salem NC
Posts: 2,098
I'm not sure what you mean by 'sump area'. Do you mean the area inside the catch basin itself? If that is what you are talking about, it is not important. I think the size of the grate is directly related to how much water you are trying to move, but if it all go's into a 4" pipe, then that really doesn't matter. Keeping the grate (no matter what size it is) free from debris during a rain event is more important and will mean a lot more water get's moved quickly. If you can post picture's of the problem area, maybe i can give you a more definitive answer.

This link might help -

Last edited by agrostis; 07-04-2013 at 08:51 PM.
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