Construction and Drawings 1935

[TsUPeR]

I have an apartment from 1935 that I plan to renovate. The problem is that I can't quite grasp which walls are important for the structure or not. I have been to the municipality and retrieved blueprints, but I still don't really understand, so I'm hoping for your help .

Floor plan and materials http://hem.bredband.net/wiejoh/lgh/Planritning.JPG
The new proposed floor plan http://hem.bredband.net/wiejoh/lgh/PlanritningNy.JPG
Finally, the beam layout drawing from the municipality, which is of such poor quality that I've had to transcribe it (solid black lines are marked as steel beams on the k's drawing) http://hem.bredband.net/wiejoh/lgh/balklag.JPG

As I understand it, the beams bear all the load, and the walls have no other function than dividing rooms, right?
What happens if the neighbors above have also removed walls? Nothing, I assume, as the loads on the beams decrease, right?

Crash and mess or Spot on?

/Johan

 

[anaitis]

It seems that the concrete slabs are supported on DIP beams, and these in turn rest on the brick walls. Thus, the gasbetong walls you are considering are not load-bearing.

 

[TsUPeR]

Thanks, suspected the same as mentioned. I've been googling like crazy on Dip-balk and haven't found anything, can someone tell me what it is? Profile, dimensions, and today's equivalent?

/curious

 

[hempularen]

For such a change, you must have the association's permission. And the association is likely to require you to hire a structural engineer to assess what is load-bearing. (And who takes responsibility for the assessment).

It can indeed be nice to "know" before involving the expert how it stands.

 

[anaitis]

DIP beam is an I-beam with somewhat wider flanges.
You can probably find sectional data in e.g. Karlebo handbook.