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Old 03-30-2014, 04:53 PM
henbit henbit is offline
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Corrugated or PVC Pipe for French Drain?

My research indicates that both corrugated and PVC pipe are suitable for french drains. However, I'll need to drive my truck, park, etc., on the area where a french drain will be installed. Will either of these pipes get crushed if I use them for a french drain installed at a 12-inch depth?

Thanks for your insight!
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Old 03-30-2014, 09:10 PM
agrostis agrostis is offline
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12" to the bottom of the trench? That won't withstand a vehicle's weight. You need to have 16" from the top top of the pipe to ground level and use rounded pea gravel to backfill the trench completely. And i would use corrugated pipe, it's much easier to work with.
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Old 03-30-2014, 09:18 PM
whiffyspark whiffyspark is online now
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I use the white drain pipe. It's not PVC and not corrugated. Kind of in between
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Old 03-30-2014, 10:23 PM
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alldayrj alldayrj is online now
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i dislike working with currogated, harder to read a pitch on it etc. i would go with a solid wall pipe
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Old 03-30-2014, 11:05 PM
ducnut ducnut is offline
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You want to use PVC drain pipe. The corrugated stuff is difficult to maintain proper slope and the corrugation catches and holds debris. I can't tell you how much of this stuff I've seen have to be pulled out of the ground because it's full of sediment and debris. People use it because it's cheap and easy; not because of a quality result. You want the smoothest inside surface and transitions as possible, so that everything flows as efficiently as possible.

The deeper the better. It's not like Schedule 40 PVC, as it's much thinner. It doesn't take much to crush it, especially, being perforated. A string trimmer will shred it.
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Old 03-31-2014, 12:09 AM
twomancrew twomancrew is offline
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Welcome henbit. Where on this green Earth are you located approximately? I want to know what the soil is like there. As for what's above-no no and no. Use corogated with the sock on it. If you need drainage where you are going to be driving you put in an actual driveway drain or use a different method to drain that area. You got a picture of the area to post? I'm not sure why you are driving where you think you need a french drain. In high school we packed(really tight packed) one inch of dirt over plastic drinking straws and drove over them. Wouldn't dent the straw. One inch of dirt was all that took to work. If you don't understand that do some googlering. Maybe culverts are a better source of info about this. I seen tons of them put in less than a foot from the surface and semis and tractors drive over them all day. Sometimes with time they get exposed a bit, then they crush.
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