Dense concrete block wall - how high?

The garage is to get another extension - out the back this time and
one of the options is to build the longest wall (4 m long by 2m high)
of concrete blocks so that a fruit tree can be grown against it.
Can I build this without any buttressing as I plan to make the the
rest of the structure to be timber frame?
Reply to
You can, but over a few meters buttressing is not a bad idea.
My advice based on doing a soil retaining wall is to do it double skinned, and either use cross bonding or ties EVERYWHERE.
That at least makes it a unitary structure. Going to 200mm wide gives it a lot more 'pushover' stability.
If ts for a garage that may be used for working in, consider making it an insulated (rockwool batts) cavity wall with proper DPC and ties between.
Reply to
The Natural Philosopher
In article , says...
No - that's why I asked!
You can get blocks up to nearly a foot thick. Obviously the thicker the wall the more stable it will be.
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My advice would be to cast reinforced concrete to retain the soil and then face it with brick. I don't see how you are going to transfer the lateral force into the ground using bricks unless you like out of vertical walls. Concrete would be safer and probably cheaper.
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Follow this link and download the building regulations part A
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having full knowledge of what your planning or what you've got, - the things that will affect your answer are wall length, height building area, wall width.
Read carefully then ring your building inspector with what you propos - hes the one who will say 'yeh' or 'neh'! (assuming you need regs
-- Cameron
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Essentially thats what I did. Lets say the blocks were juts precast,and the ties in the strong mortar made it fully reinforced.
Then I used a second skin of bricks.
The wall was in a curve anyay.
I used concrete blocks, faced with brck where visible..The soil is only about 800mm deep.
Backfilled with hardcore around the base
The wall is essentially U shaped, so the top layer is somewhat in tension. This keeps it vertical(enough).
If it had beem higher or straighter I would have run rods back into the soil area and tied them to concrete as an anchor.
Reply to
The Natural Philosopher

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