ᐅ Attic / Load-bearing Walls?

Created on: 18 Mar 2020 07:05
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Fabian_81
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Fabian_81
18 Mar 2020 07:05
Hello,

I have a question regarding a single-family house from 1976 with living spaces in the attic.

Floor plan of an attic with master and children’s bedrooms, hallway, bathroom, balcony, storage room.


Which walls on the floor plan are likely load-bearing? According to the building description, the roof is a wooden rafter roof / gable roof. The interior walls between floors are made of brick / aerated concrete (Ytong).

The wall between the storage room and the bedroom has been modified. The former storage room is now a bedroom, and the former bedroom has been converted into an additional bathroom.

We were also told that the wall between the children’s bedrooms can simply be removed if necessary.

Thank you very much!
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Lumpi_LE
18 Mar 2020 07:16
Something like this should be evaluated by a structural engineer.
If it is a true rafter roof, there would be no load-bearing walls.
But as I said, hire a structural engineer to take a look at it.
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Fabian_81
18 Mar 2020 08:19
Thank you. We will definitely consult a structural engineer as well. The following image likely confirms the building description, indicating that it is a rafter roof:

Cross-section of a two-story house roof with roof truss, tile covering, and roof window.
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nordanney
18 Mar 2020 08:22
Fabian_81 schrieb:

Which walls according to the floor plan are likely to be load-bearing walls?

Most likely none of the walls are load-bearing. This is suggested by the rafter roof and the materials used. However, this is only PROBABLE.
11ant18 Mar 2020 12:35
Fabian_81 schrieb:

Which walls according to the floor plan are likely load-bearing? [...] Interior walls between floors are brick / autoclaved aerated concrete (AAC).

The thickness of the interior walls (12 cm (5 inches) instead of 11.5 cm (4.5 inches) brick or aerated concrete, or 12.5 cm (5 inches) aerated concrete blocks) does not correspond to any of the mentioned materials; these are also not load-bearing if made from the stated materials—only 11.5 cm (4.5 inches) thickness could suggest load-bearing calcium silicate blocks. However, non-load-bearing walls can also serve a bracing function and therefore be structurally significant. Are the rafters supposed to be supported exclusively by collar beams to maintain their position here?
Fabian_81 schrieb:

We were also told that the wall between the children’s rooms can simply be removed,

I consider this highly likely to be correct.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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ypg
18 Mar 2020 13:05
But rafter roofs definitely have one or two supports that are not visible. That's how it is in our case.