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re: French drain system

Posted on 3/21/24 at 8:08 pm to
Posted by Reubaltaich
A nation under duress
Member since Jun 2006
4976 posts
Posted on 3/21/24 at 8:08 pm to
quote:

Any flex pipe is garbage. Do it right with perforated pvc, and wrap it with geotex fabric. Corrugated is not durable long term, and will lift or sag as conditions change.


Yep, I looked at some of that stuff at Home Depot, looks pretty flimsy and not well made.

PVC perforated pipe looks like the way to go. I priced 4" PVC pipe out at 25 dollars for a 10 foot piece.

River rock, what size? Reading on it, 1" seems to be the standard.

A 50 foot run about 12" wide and 12" deep should need about 15-16 cubic yards of gravel?

Hardest part seems to be digging the trench. Thinking about renting a mini excavator for a weekend and do some other dirt work around the ole homestead.

This the biggest thing:

What is the best method to determining where I should put the French drain?


Posted by AyyyBaw
Member since Jan 2020
1070 posts
Posted on 3/22/24 at 5:52 am to
I’d put it wherever the most water holds after a good rain. Our home is currently being built on a 32” pad above normal grade. I’ve been collecting and hauling as much dirt as I can find for free or a good price for grading as soon as it dries up. See how much it would cost for dirt and grading. We got free dirt when the parish dug the ditches. Maybe you have a friend with a tractor? Grading will also give you a more gradual slope where pad meets yard. Are you planning to run drains to discharge into a ditch?
Posted by jennyjones
New Orleans Saints Fan
Member since Apr 2006
9336 posts
Posted on 3/22/24 at 8:40 am to
quote:

A 50 foot run about 12" wide and 12" deep should need about 15-16 cubic yards of gravel?


You sure? 15-16 cubic yards is a lot of gravel

Based on your numbers above, you should only need 1.85 cubic yards
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