L-shaped bracket?

In message , Martin Pentreath wrote

Try Screwfix for some ideas

Search for builders metalwork

Why steel? Without entirely understanding your geometry, might it not be simpler to fabricate something in wood? Use multi monti bolts or coachbolts into big rawlplugs, or rawlbolts to fix the timber to the wall. What loads is it taking? You can get galvanised strap about 25 x 4 mm from builders' merchants which is typically used to locate wallplates for roofing timbers on the top of a wall.

Have a look in Wickes, they have a good selection of HD metal brackets.

Thanks for the replies. Will have a look in Wickes, if not there then some of the Screwfix brackets might work. The load it needs to take is, I would guess, potentially quite high. It's to support one end of a 6' x 4' bit of trellis sitting on top of a brick wall. Once it's covered in jasmine and a bit of a wind gets up I would guess the forces involves are pretty big

PS Here's an ASCII picture of what's going on (fixed font required):

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Try this

Could you not fabricate a wooden post in sections to go around the oversailing course? Or cut a rebate in a solid post? Much stronger than a bracket.

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Having seen that, go and find your local metal bashing/welding company and ask them to make a joggled bracket with a section welded to it to make it a tee section vertical that gives lateral strength that can be bolted to the side of the wall. The joggle will follow the path of the wall, till the 'oversailing' (the joggled part) and then continue to follow the wall up to it's top. Get them to plate it to prevent rust and it should last your life out.

Cross section of the tee section looking from above, I hope this works

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Dave

Use a steel joist hanger?