partial french drain possible?


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Old 10-21-08, 10:23 PM
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partial french drain possible?

I finally built a half or a little more then half of my retaining wall. It's not perfect but it should do. Question is regarding the drain. As I was digging first half of my project i was hitting patches of solid rock here and there and lots of small rocks everywhere, but again it was doable. As i removed the topsoil from the last 25 ft. of the wall it exposed just solid rock with inclusions of some granite. I gave up digging this stuff and terminated my drain pipe where the solid rock begins. Would this cause me problems in the future? Can i just leave this last 25 ft. as a french drain and mate it with my 4" drain pipe?

Thanks a lot for all your help!
http://i293.photobucket.com/albums/m...stpartpipe.jpg
http://i293.photobucket.com/albums/m...minationII.jpg
http://i293.photobucket.com/albums/m.../solidrock.jpg
http://i293.photobucket.com/albums/m...olidrockII.jpg
 
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Old 10-30-08, 09:20 PM
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Not answering my own questions - just adding to them. I am putting down the landscape fabric behind my wall and not sure on which side it's better to have. Next tot he block or next to the soil? Thanks!
 
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Old 10-31-08, 03:14 PM
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What type of SRW are you using? It doesn't look like you have enough room to use any of the standard ones. You need 12"+4-6" for the drain beyond the edge of the driveway/walkway, then an inch +/- of batter for every 8" of wall height.
 
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Old 11-05-08, 09:49 AM
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thanks! and sorry I am not that good with acronyms
if the SRW means "geo-grid" type of stabilizing fabric. I am using none of it on this wall. I was referring to a regular landscape fabric behind the wall to prevent weeds from coming thru the wall.
As far as "french drain" it's already too late. I stopped where i said I would and finished the wall without the pipe drain. So far first lite rain did not bring any problems, but we sure will see. Beer 4U2
 
 

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