Raised bed

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27 Aug 2003
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United Kingdom
I want to build (have built, to be more precise) a new boundary wall in my front garden which will actually be 2 brick walls with soil in between to create a raised bed - in plan it will (??) look like this:


The gap between the parallel walls will be approx 30-35cm, and the widest part across the diagonal at the corner will be 1.25 - 1.3m.

The height will be 6 or 8 courses.

Is this feasible, with single-skinned walls, or will it all fall down?

Yes, I know that the people I get to do it will be the best ones to advise, but for reasons too irrelevant and too boring to explain here I need to know before I start getting quotes in...

I have locked this duplicate post as your other post is here ;) //www.diynot.com/forums/viewtopic.php?p=786983#786983
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The biggest potential problem will of course be at the corner, where there will be a fair weight of soil pressing on the wall skin. I'd be tempted to partially bond the inner and outer skins on the straights at intervals, and provide stub pillars on the corners. Just my view.
I can't see a problem providing you use wall tie or strengthen stainless steel bar between the 2 walls, also a good idea would be to use dpm on the inner wall to stop the wet earth soaking into the brickwork or bitumen paint etc and weeping holes at bottom to allow drainage


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