Block work garden wall

[Raceymacey]

Hi, I am planning on building some raised beds around a patio using blockwork and then fitting porcelain cladding. The beds will be about 4m by 1m and about 0.6m high.

To keep the costs down I was looking to use a single skin of 100mm wide blocks, would this be enough? Or should I use 140mm wide blocks, or do I need to lay the blocks on their backs?

Also, I was looking to use a footing 200mm wider then the blocks, dig down 300mm, put concrete in the bottom 150mm concretet. Is this enough for clay soil?

Thanks

 

[^woody^]

100mm blocks with be fine.

Foundation depth will depend on the ground condition, 300mm would be a minimum if the ground is firm at that level. You should see a colour and texture change from the topsoil layer.

 

[Raceymacey]

Thnk you so much