Would any wise person like to tell me the dimension of an interior wall that should support the floor joists up to a finished attic?
The house is 8 m long and will have 2 partition walls straight through it, which means the span will be about 3 meters on the joists.
Surely a 45 x 95 with plasterboard on both sides should be enough?
If I would like the wall to be thinner...
Steel pillar, weld, place square iron at the bottom to distribute the pressure
600 c/c on the joists, a pillar under each beam
The smallest possible dimension to achieve the thinnest wall possible.
Would be so grateful if someone could enlighten me.
The upper floor should support its own weight and a guest room with 2 beds.
I would also appreciate advice on floor joists.
The lower the height the better
Low ceiling height upper floor.
45x95 is suitable as an interior wall, just make sure that the joist/slab (under the new walls) can handle the load that will be. With that span you can use 45x220 as joists, cc600. I have 45x220 with a span of 4.3m and it can sway a bit. However, it's a home theater room so it's not disturbing.
You can go down to 45x70 mm C 24 if you install noggings halfway up, or alternatively reinforce with K-plywood or OSB behind the plasterboards.
Sorry for a youngster (72 years)
What does C24 mean?
Noggings alternatively plywood/osb..
do you mean either or i.e. 45 x 70 sufficient if noggings?
Thanks for the existence of this Forum, have searched like an idiot to find info
C24 is a quality designation, and you will find it as a stamp at the end of the studs. It usually says C14, which indicates somewhat lower strength compared to C24. Nogging with the same dimensions as the other timber works just fine!
Either you install noggings or you place sheets of construction plywood or OSB behind the drywall. In both cases, 45x70 mm strength class C 24 is sufficient.
Either you install noggins or you install sheets of construction plywood or OSB behind the gypsum. In both cases, 45x70 mm strength class C 24 is sufficient.
Doesn't C14 work, justus? I would think it's hard to find 45x70 studs in C24.
Doesn't C14 justus work? I would think it's difficult to find 45x70 studs in C24.
That's correct, 45x70 C24 is usually not in stock but can be ordered if you really want it.
You can also use C14 and space the studs closer, for example, c/c 450. Then you can buy ergonomic boards when you need to plaster, which will make life a bit easier during that stage as well.
I based it on the TräGuiden's post list. C 14 is on the borderline when it comes to buckling in the y-direction. It will probably hold, but the margins are not large. I think TS should try to get a hold of C 24 timber. I've never had a problem personally finding C 24 in that dimension. I try to use better timber the slimmer the dimension is, to avoid the studs looking like screws.
