Building a wall on a patio

[Brian Gaff]

Far better though to build the all first and use it as an edge for the patio to stop it moving outwards on that edge Brian

[Bert Coules]

Thanks to everyone for the new replies and the advice, pro and con.

[meow2222]

I was of course referring to rebar in a domestic diyed 4" brick wall, a very different proposition to the design of the onion & shard.

NT

[Andrew Gabriel]

You can buy stainless steel rebar.

(You can also buy galvanised, but that does eventually fail in wet mortar, which is why wall ties are now stainless steel.)

[Andrew Gabriel]

Paving slabs will easily snap if you put a weight like that on them - the foundations under the weight would only need to settle a millimeter or two to generate a stress across the slab. Alternatively, any settling would cause the slab to sink on the heavier side, possibly lifting the other side, and the wall to tilt.

Can't see the mention of retaining wall, but a half brick wall won't retain anything. Some were built in an area I walk past, and they are a poured concrete wall with embedded steel mesh, and then a brick wall decorative face was added at the end, tied into the concrete face.

[John Rumm]

However as has been said, you can still stick the required footing under the patio.

[Bert Coules]

Belated thanks for that: it is clearly the sensible approach.

[John Rumm]

That's harry - to the point, and wrong...

[meow2222]

You can, but nearly all folk seem to insist on using galv. (IME galv fails in dry locations too.)

NT