Can anyone answer what a planka (75x350mm) corresponds to in either glued laminated timber or steel beam?
Roughly speaking 😄
Intended to be used as a wall support.
 
P
What are you sizing against?

One hell of a plank by the way! :)
 
  • Haha
Anonymiserad 405730
  • Laddar…
The idea is to make a larger opening in a load-bearing interior wall.
The opening is expected to be 3m.
The house is a single-floor, 8m wide, 4m between the outer and interior wall. Light roof, snow zone 3.
 
P
Contact a constructor.

Now someone grumpy might come and say that there are people who know this on the forum. But I haven't even seen an embryo of dimensioning at all here yet.
 
Last edited by a moderator:
The question is somewhat vague. Is the measurement the space available to use or is there something in that dimension today? Wood in that dimension is likely glulam regardless.
 
  • Like
Utsliten och utdömd and 1 other
  • Laddar…
What does the statement about 75x350 come from? Glulam is in any case much stronger so if you take the same or slightly under, it's fine. However, I would not change load-bearing walls in a house on a whim... it could get expensive.
 
Assuming the strength of a "plank" in a coarser dimension is impossible without more details. Is it something from the local sawmill you have? There's an incredible difference between a coarse knot-free "plank" in oak compared to one in fast-growing aspen or other lighter hardwoods. Even with coniferous wood, the strength can be significantly affected by how you have potential knot holes, especially if you have knot holes on each edge.
 
The planks are made of knot-free pine. 75x350 is the size of the planks I have and thought could be used.
 
P
Do you have any pictures of these? Damn, what planks! Thick and wide and knot-free. Are they without mÀrg too? :o
 
T TommieK said:
The planks are made of knot-free pine. 75x350 is the size of the planks I have and thought could be used.
You will have difficulty getting a correct dimensioning as it is based on classified timber, I guess these are "farmer-sawn" planks.

It is not suitable to make modifications to load-bearing structures without dimensioning.

If you still want to do it, you can use the guide from svensk trÀ. Assume that your plank is equivalent to about a 56x270 glulam, no more.
 
Click here to reply
Vi vill skicka notiser för Àmnen du bevakar och hÀndelser som berör dig.