Hello!

I live in a townhouse with an external brick facade from 1987.
I'm considering removing the red-marked wall between a bedroom and a storage room and replacing it with a lightweight wall to create a small office.
All I have so far is the architectural drawing, see the attachment.

Wall material: Some form of concrete material, lightweight concrete? It has a hollow sound when I knock on it.
Thickness: 100 mm.
Interior ceiling: Seems to be concrete. It has a solid sound when I knock on it.

Here's my current thinking (read guessing):
The distance between the outer walls in the bedroom/storage is about 5 m. If the floor joists run in that direction (see the arrow in the attachment), the distance should be short enough that no load-bearing walls are needed. It would be strange if the floor joists rest on the storage wall since the joists would not be of equal length. There is no corresponding wall on the ground floor.
I haven't checked if there's a roof truss along the wall.

Can you help me speculate further? 😅
 
  • Architectural drawing of a row house showing floor plans and elevations. A wall between a bedroom and storage is highlighted in red.
BirgitS
If there are load-bearing walls in houses from that time, it is usually a wall that stands approximately under the roof ridge. Normally, the wall you want to demolish is not load-bearing.

Common wall construction in villas and terraced houses from that time is a wooden frame construction with plasterboards. It sounds hollow.
 
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