Drain tile questions for retaining wall installation.


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Old 07-20-09, 04:29 AM
T
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Question Drain tile questions for retaining wall installation.

I've got a couple of questions about installing drainage tile behind a retaining wall:
1. Do I install the drainage tile directly on the ground at the lowest point of my trench below the compacted base. Or do I install the drainage tile on top of the compacted base. My trench is 12 deep. I plan to add 6 of compacted base. My drainage tile is 4
2. I have a wall which runs 16' and then turns 90 degrees and runs up a slope about 9'. I am going to run drain tile the entire length of the 16' wall (which is at the bottom of the slope). I need to pass the drain tile running along the 16' wall underneath the perpendicular wall on the right side to direct water away from the wall. I am not sure how to pass the drain tile underneath the wall. Could someone offer some guidance?
 
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Old 07-23-09, 05:02 AM
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I'm not an expert in this field but since no one else has replied.....

The drain tile should go at the bottom of the wall with gravel above it.

If I understand correctly, there should be a piece of hard [pvc] pipe in the footer [or maybe bottom section of the wall] and the drain tile would either be connected to it or pass thru it.
 
 

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