If you re building a retaining wall on a hillside.
French drain behind retaining wall.
The stone is just deteriorating.
Ask question asked 2 years 9 months ago.
25 jun drainage behind retaining wall.
We re going to keep the good stones and use them for the rebuild.
French drain below or above retaining wall.
Posted at 08 12h in commercial landscaping hardscapes hiring a landscaper.
Why you need a french drain behind your retaining wall the proper drainage behind a natural stone wall is extremely important.
Slope the tubing from one end of the wall to the other or from the ends to the middle.
Let me show you what happens after 19 years.
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.
Otherwise water moving down the hill will build up behind the wall and undermine it.
Perimeter drains foundation and footing perimeter french drain systems prevent moisture from entering a building basement or crawlspace.
Use drainage tubing behind the wall.
You want to use a perforated 4 plastic pipe below.
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.
They are also always lower than the footing of a foundation or wall or stair system.
Next the trench should be lined with ground sheeting this is available at most builders merchants.
The ez flow drainage system intercepts and conveys groundwater from behind retaining walls relieving this pressure and preventing weeping.
The pipe should rest on the same compacted gravel base or concrete footing that supports the wall.
If you re building a retaining wall add a french drain behind the first course of stones or blocks.
We re pulling all this out.
Drain pipes go behind the wall on the side with the surcharge the soil that that wall or foundation is holding back.
Drainage problems in your yard can lead to pooling mold or water damage in or around your home.
How to stop retaining walls from failing.