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French drain behind retaining wall.
The ez flow drainage system intercepts and conveys groundwater from behind retaining walls relieving this pressure and preventing weeping.
Check out this video for some simple instructions on installing a french drain behind an 18 to 24 tall retaining wall before it is backfilled with dirt.
Next the trench should be lined with ground sheeting this is available at most builders merchants.
If you re building a retaining wall add a french drain behind the first course of stones or blocks.
Drainage problems in your yard can lead to pooling mold or water damage in or around your home.
The pipe should rest on the same compacted gravel base or concrete footing that supports the wall.
The photos we show in this article show a french drain being constructed behind a low retaining wall.
They are also always lower than the footing of a foundation or wall or stair system.
We re pulling all this out.
Use drainage tubing behind the wall.
Why you need a french drain behind your retaining wall the proper drainage behind a natural stone wall is extremely important.
First you need to dig a trench behind the wall about 15cm wide and as deep as required with a fall off 1 in 100 so that the water flows.
We re going to keep the good stones and use them for the rebuild.
How to stop retaining walls from failing.
Drain pipes go behind the wall on the side with the surcharge the soil that that wall or foundation is holding back.
Let me show you what happens after 19 years.
Luckily you can avoid these problems by installing a french drain.
Ask question asked 2 years 9 months ago.
Otherwise water moving down the hill will build up behind the wall and undermine it.
You want to use a perforated 4 plastic pipe below.
A french drain is a trench filled with a perforated pipe and gravel that allows water to drain naturally from your yard.
If you re building a retaining wall on a hillside.
French drain below or above retaining wall.
The stone is just deteriorating.