Rebar sizing

[OveE]

I am going to help a local heritage association with a bench along a facade.
I plan to drill in rebar at regular intervals of about 1 meter into the stone base,
suggesting 200 mm deep holes.
Is there anyone who can help me with suggestions on the dimension of the rebar?
I'm thinking of using three 45*120 pressure-treated planks to sit on.
Best regards, Ove

 

[larsbj]

I will help a local heritage society with a bench along a facade.
I'm thinking of drilling reinforcing bars at even intervals about 1 meter in the stone base,
suggesting 200 mm deep holes.
Is there anyone who can help me with suggestions on the dimension of the reinforcing bars?
I'm thinking of using three 45*120 pressure-treated planks to sit on.
Best regards, Ove

I think 12 mm will be too weak, I would go with 16mm.
I think 100mm deep holes are sufficient unless it's a very porous foundation.

 

[OveE]

I think 12 mm will be weak, I would have used 16mm. I think 100mm deep holes are sufficient if it's not a very porous foundation.

How many kilos can you load onto a 16 mm iron about 50 cm from the wall?

 

[GoC]

A gang of chubby guys will also be bending 16mm iron near the stone base. You need some form of crossbar from the outer part of the bench slanting downward inward to reinforce the construction. Otherwise, it will quickly become deformed so the guys will fall off.

 

[OveE]

A bunch of fat guys will probably also bend 16mm iron inside by the stone plinth.
You need some form of brace from the outer part of the bench diagonally downwards inwards to strengthen the construction. Otherwise, it will soon become deformed so that the guys fall off

If I go up to 20 or 25 mm.

 

[GoC]

If I go up to 20 or 25 mm.

So you want nothing to be visible?

 

[OveE]

So you want nothing to be visible?

It's probably the simplicity of drilling and driving the iron into the stone base.
The earlier response about "gubbar" and "gummor" is probably correct, which is why I want both braces and a belt.
I also don't want to weld if possible.

 

[GoC]

Bend the rebar like a bracket and drill two holes, one upper and one lower. Anchor in the upper hole with a chemical anchor. Then 12mm rebar will probably work safely.
Or probably. But 12mm rebar can be bent easily.
Then you get tensile strength in the upper hole and pressure in the lower.

 

[OveE]

Bend to rebar like a bracket and drill two holes, an upper and a lower. Anchor in the upper hole with chemical anchors. Then 12mm iron will surely work.

Good suggestion, I will look further into this, and thanks for the help.
Happy Midsummer to everyone on the blog.