Fix to this?

[23vc]

I want to drill and bolt a fence post to the birdsmouthed section of this wall (purple dots) - worth bothering or will any fixing just split the brick as it expands? Better to sister it up next to another one fixed to the solid section instead? Ta

 

[noseall]

I want to drill and bolt a fence post to the birdsmouthed section of this wall (purple dots) - worth bothering or will any fixing just split the brick as it expands? Better to sister it up next to another one fixed to the solid section instead? Ta

Use concrete screws or Thunderbolts.

 

[23vc]

Cheers. I had images of them splitting the brick as they tightened, but if not, happy days.

 

[freddiemercurystwin]

Use concrete screws or Thunderbolts.

Oof rather you than me ....

 

[noseall]

Cheers. I had images of them splitting the brick as they tightened, but if not, happy days.

Conc' screws don't expand, no. They also don't pull the work-piece in, so make sure the post is tight back to the wall.

I've not used T'bolts but I'm sure they work on the same (non-expanding) principle.

 

[noseall]

Oof rather you than me ....

A decent impact driver will do the job. The fact that its a modest (6mm) hole means there is less risk of splitting when drilling. I'd be sure to go into the meat and not anywhere near the frog. Easily identifiable by the open joint.

 

[robinbanks]

They also don't pull the work-piece in

They do if you drill the hole in the post out to 9mm or so. Can always put a washer on if the hole ends up too larger and the head sinks too easily. If you have a grinder you can alternatively strip the thread off the bolt, but that does also take the zinc with it
.
Might also want to utilise some patience and a gentle hammer drill eg a cordless rather than an SDS hammer

 

[noseall]

They do if you drill the hole in the post out to 9mm or so.

We tend to buy the longer 6mm bits and bang the bit through the workpiece into the masonry. I suppose if you make the workpiece hole baggy enough so the thread won't grip, that would work.
I'm not a massive fan of conc' screws but they have their uses. Especially when fitting placcy windows.

 

[23vc]

Thanks. For this, I’m using the 10mm fellas, so the bolt equivalent of the smaller 6mm screws. Will go very steady on the drill and cross my fingers

 

[^woody^]

Those commons will drill with a good bit in a non impact drill.

Use plastic plugs or hammerfix, as they won't expand.

Watch for the frogs, looks like they are up.