Wall-mounted (floating) bench in the bathroom?

[anders07]

I'm considering making a wall-mounted bench in the bathroom, inside a steam sauna, but I'm stuck on the construction...

There are lightweight concrete walls behind, but I will frame against the lightweight concrete, though I can only attach the framing to the ceiling and floor, so not much to work with in terms of fixing...

Can it hold with 45 studs for a bench for 3 people, or is it just a no-go?

 

[Småbrukaren]

Can't you embed iron or threaded rods in the wall then?

 

[anders07]

Can't you cast in iron or threaded rods in the wall then?

How do you mean then?
I will be framing up a wall with 45mm studs and will need to attach the bench in some way to these...

 

[Småbrukaren]

I mean that instead of consoles or support legs, you need resistance. Think seesaw. And since you probably can't keep the bench floating with the help of some angle brackets in a 45 wall, you need to use the house wall. Thus, the house stands on one side of the seesaw, and you take a sauna on the other side.

 

[anders07]

I mean that instead of brackets or support legs, you need a resistance. Think seesaw. And since you probably can't keep the bench floating using some angle brackets in a 45 wall. So you need to use the house wall, thus the house is on one side of the seesaw and you take a sauna on the other side.

Yes, ok, I understand what you mean then, but the problem is that there is a ventilated wall behind it so I can't access it…
It's quite porous blåbetong also so not much load-bearing...

 

[mrmlz]

For various reasons, I've been browsing this kind of thing the last few days. That solution looks pretty nice but unclear if it's available in Europe!

 

[Småbrukaren]

What goes on the outside of the studs, panel?

 

[anders07]

What goes on the outside of the studs, panel?

For my part, it's a steam bath, so I need a waterproof layer...
I'm leaning towards just forgetting it and making "boxes" that I then tile...

 

[Plupp 618974]

It is primarily the torque you are working against. You need some form of bracket, preferably made of reasonably thick steel (think 10 mm), which has significant vertical spread to avoid crazy forces at its attachment to the joist.

How are the joists attached? It is good if the attachment points for the joist and wall, and the joist and bracket are close to avoid the need to design against deflection of the joist. It grows quickly if it's to feel unyielding.

A couple of diagonal braces make everything much easier. Also, attachment to the sides of the bench if it runs from wall to wall.