This is rather uncommon. But we are going to build a house in the children's room where there's a staircase to go up, and then they each have their own "room" on the right and left sides. Please see the image below.
I need some help. The wall in the regular room has OSB and then plaster. My thought is:
- Outer frame screwed to the wall with a standing 70x45 frame (1.5 + 4.8 + 1.5 m)
- 70x70 pillar (0.8m high) at the staircase to support the cross frame
- Bearing beam standing 145x45 two pieces (4.8m) supported by beams at the bed and standing frame (B)
- Bearing beam against the long wall screwed standing 70x45 (closely spaced screws)
My biggest hesitation is 145x45, will it suffice? For example, with a terrace construction, it's common to use 60cm c/c if you have a 145x45 frame. Now it has c/c 2.1 0.5 2.1. Alternatively, increase the frame size, or add more pillars? Maybe then I also need to increase the dimension of the bearing beam. There will also be a bearing beam for the roof with a similar construction where the same pillars will support the weight.
I want to do this with caution, and would rather increase the dimensions than risk the structure collapsing
