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Question DetailsAsked on 9/21/2011

How far down should I dig when I'm putting in a receding wall?

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1 Answer


Not quite sure what you mean by "receding wall", I think you might be referring to a segmental wall. But in any case when you install any type of wall the base is determined by 3 things.

1-Your local building code
2- The finish height of your wall
3-Type of material being used

The taller the wall the deeper and wider the base. In Texas a landscape wall is usually (depending on the city), measured from the bottom of the base to the top of the finished wall. In some cases you will need to get a permit.

As for how far to dig we most commonly use a 4" reinforced concrete base for 1-2 courses of stone. Other bases consist of 1-2" of level base material (like sand or decomposed granite) and then for the first coarse of stone to be installed below grade as it will act as the base for your wall. So you should dig deep enough to install one course of stone, level, below grade. As long as it is level the wall should continue to be as you build it. Of course always tripple check.

The other question is how wide should your trench be. Again this depends on your local building codes and you should be able to call an inspector and get an answer for your specific location. You should also be able to get information from the seller or manufacture of the stone. Different manufactures may spec different bases.

Whenever you build a wall you should allow for drainage behind it, which can range from as little as 6" to several feet (depending on height of wall). Not addressing the need for drainage is why most walls later fail. Give the water somewhere to go and it won't cause you problems by stressing both your wall and your plant material.

Hapy Digging

Answered 9 years ago by Dallas Curb Appeal

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