Small Brick Wall Advice

[lil-minx92 10]

Hi

 

I want to attempt to build a square raised bed out of bricks- 4 bricks high from the ground. I was planning on sinking another 'foundation' level of bricks into the ground just laid on some level slab laying mix. Is this adequate or do I need to create a 'proper' concrete foundation and build up from that?

Thanks

[Janus 28]

If the earth below the foundation layer of bricks sinks, then it is likely that the mortar joints would crack.

 

On the positive side, 4 bricks high is only going to total about 14 ich including the  mortar joints. The wall is not going to be load-bearing, so if the joints cracked it is no big  problem. If you tamp the soil down well that you are going  to  lay the foundation bricks on, you may well be ok.

Edited April 8, 2020 by Janus
typo