Building interior walls with 45x45 studs and OSB+gypsum on both sides

[Raginglynx]

Is it likely to be stiff enough?
I am going to build two interior walls in a garage. This is to be able to use a 93 mm frame and to attach the molding flush with the frame. Then the wall, including OSB and gypsum, is about 95 mm.

While I'm at it - how do I attach the floor joist to the concrete?
I have underfloor heating in the concrete. I was thinking of fastening with glue, but do I need to lay plastic in between?
Then I need to glue the plastic to the concrete and the joist to the plastic.
Or can I attach the joist directly to the concrete?

 

[smurfen72]

45*45 is sufficient for a regular inner wall. How deep the floor heating is located can be shallow drilled if the pipe is a bit further down.

 

[Raginglynx]

It should be around 5 cm down - I tied it to the rebar that I placed on 50 mm spacers

 

[smurfen72]

Then you can drill 3 cm, it's enough if you fasten it with the reglarna afterwards.

 

[xibeca]

Use sheet metal layouts with foam/plastic underneath instead of wooden studs against the floor/ceiling. Then you can place wooden studs in between.
Short nail plugs or bolt gun to fasten the layouts.

 

[Raginglynx]

Okay, but I'm a bit hesitant - it wouldn't be fun to make a hole in a hose

How should I proceed with gluing?

 

[Enk Projektet]

It works to glue a standard wooden beam with, for example, PL400 or similar directly to the concrete... it's best if it is painted or primed beforehand...

 

[slacker]

I would, as xibeca suggests, use metal anchors, drill and attach these with 5x20 nail plugs in metal. Drill stop or tape on the drill so I don't hit the pipes.
In case of uncertainty, I would rent a wall scanner like Bosch D-Dect to find the pipes and then possibly drill deeper with longer nail plugs.

 

[Raginglynx]

Ok, thanks for the tips

 

[prototypen]

With sheet metal rule with foam underneath, the question is whether much more is needed if there is an interference fit against the ceiling.

Protte