Fixing bolt to wall

[DiyNutJob]

I need to fix an eye bolt to the wall to use as a secondary safety anchor for an aluminium scaffold. I plan to thread a rope in the eye and tie the two rope ends to the scaffold. Neither the rope nor bolt will be under tension except in an emergency. What size and bolt type do I need. I don't know if the bricks are hollow - I suspect it is. Thanks.

 

[opps]

The scaffolders on my site used these

https://www.gsproducts.co.uk/scaffold-ring-eye-bolt/

 

[DiyNutJob]

Are they using the bolt on brick, or concrete?

 

[opps]

They are drilled in to fletton bricks.

 

[^woody^]

The scaffolders on my site used these

https://www.gsproducts.co.uk/scaffold-ring-eye-bolt/

That's just the eyelbolt. The threaded anchor would be more relevant - and the fixing of that anchor to the wall type. Normally m16

 

[DiyNutJob]

That thing is huge. Is there a cheap drill that can handle it?

 

[opps]

That's just the eyelbolt. The threaded anchor would be more relevant - and the fixing of that anchor to the wall type. Normally m16

Yeah, it is a M16 thread, so I guess that a 20mm hole will be required.

https://www.orbitalfasteners.co.uk/...-rawl-pno-77-150-20mm-hole-diameter-required-

Instructions are here

https://www.orbitalfasteners.co.uk/products/m16-scaffold-ring-bolt

To, the OP, you will need an SDS drill, a cheap one will suffice, oh.. and a 20mm drill bit.

 

[^woody^]

No good for bricks with frogs

 

[opps]

No good for bricks with frogs

Good point. I hadn't thought of that.

The following seems to suggest using plugs that are the same size or larger than the mortar line.

https://atlas.org.uk/?mdocs-file=742

See 3.4, page 6

 

[HERTS P&D]

No good for bricks with frogs

Don't drill into the Frog.

Andy

 

[DiyNutJob]

How do I know I have frog?

 

[Old Salt]

Open both windows and span some 4x2 construction timber (or larger) across the opening inside. Tie the scaffold to the timber through both window openings using some decent rope and knots.

 

[Tigercubrider]

That’s what I’d do.

 

[DiyNutJob]

Open both windows and span some 4x2 construction timber (or larger) across the opening inside. Tie the scaffold to the timber through both window openings using some decent rope and knots.

Yes, that's an option. I already had that idea using an aluminium ladder inside the house as an anchor. It won't work if I need to secure it in high winds. Don't know if more winds will strike. Hence, an external fixing was wanted in case strong winds arrive in the middle of the night. I have the knots all sorted and tested - constrictors work fine.

I used mid-strength chemical anchor to hold bolts in hollow bricks by completely filling the void. That worked to hold the metal holder of a fence post. I am thinking doing the same with the eye bolt. Even if the brick is hollow, it won't matter because it will get completely filled. I could use the max strength chemical anchor.

 

[^woody^]

I could use the max strength chemical anchor.

Then you need to consider how you will set the anchor, as the epoxy may prevent it.