Free standing garden wall

[iah1980]

Hi, wondering if someone could offer up some advice.

I am planning on building two free standing 6ft walls 3 metres long at the back of my garden with a gate in the middle . I have discussed this with building control and they have a advised digging 600-900mm deep footings around 450mm wide. I plan to use dense concrete blocks 7n which are 110mm thick, when I told him I was going to build it one block thick with 3 piers per wall he said that it might not be thick enough.

My question is do you think with the piers the wall will be thick/strong enough?

 

[tony1851]

A free-standing wall that high should be a minimum of 200 thick, regardless of piers. If you are building it 110 thick, the piers will be assumed to take most of the wind load, and should really be designed and sized accordingly.

Don't put a dpc near the bottom as that will only make it more unstable.

Are you sure the blocks are 110 thick?; most are 100 thick.

 

[freddiemercurystwin]

http://www.planningportal.gov.uk/permission/commonprojects/fenceswallsgates/ scroll down until you get to the section on safe heights etc

 

[iah1980]

Thanks Tony. Correct they are 100mm. When it's doubled up do the brick staggers run parrarel to each other and butted up to each other with mortar?. Thanks for help with this.