Hello,
I am going to take down a load-bearing wall made of blåbetong and need help with beam/glulam calculation.
The span is about 7.3m between the exterior walls.
In the middle, the wall extends from the kitchen and thus functions as support.
The house is a single-story villa with a basement, and beneath the load-bearing wall is a corresponding wall in the basement.
The house is located in Stockholm.
What beam/glulam can I use?
Thanks in advance
/Lars
I am going to take down a load-bearing wall made of blåbetong and need help with beam/glulam calculation.
The span is about 7.3m between the exterior walls.
In the middle, the wall extends from the kitchen and thus functions as support.
The house is a single-story villa with a basement, and beneath the load-bearing wall is a corresponding wall in the basement.
The house is located in Stockholm.
What beam/glulam can I use?
Thanks in advance
/Lars
It is difficult to know exactly what rests on that wall today as the house shape with the angle complicates it. If the kitchen wall, which could be a support, lands exactly in the middle, it concerns a beam of the size 90x270 mm. Without more precise information, however, I would not rely on that information. If you remove part of the heart wall in the angled section, there might be a truss above that loses its central support. You need to check that.
Thanks for the response.
It's difficult to get more information as there are no more drawings available.
Do you mean laminated wood beam in dimension 90x270?
What would that correspond to in a steel beam?
To support the cold attic with trusses on two openings with pillars that stand on the wall in the basement with a span of 360cm, what type of beam does that require if we disregard the angled part of the house and consider the wall I’m taking down as an outer wall?
It's difficult to get more information as there are no more drawings available.
Do you mean laminated wood beam in dimension 90x270?
What would that correspond to in a steel beam?
To support the cold attic with trusses on two openings with pillars that stand on the wall in the basement with a span of 360cm, what type of beam does that require if we disregard the angled part of the house and consider the wall I’m taking down as an outer wall?
A glue-laminated beam in the dimension 90x270 corresponds to a steel beam with a moment of inertia of at least 914x10^4 mm4, e.g., a HEA 140.
If you consider the wall as an exterior wall, I get a line load of about 7.5 kN/m. (Very approximate since I don't have the exact dimensions, but I have some margins instead) A glue-laminated beam with a span of 3.6 m then needs to have the dimension 90x270 to keep the deflection under 1/300 of the span.
If you can go up to the cold attic to the gable extension and take a photo, maybe we can get an idea of how it looks?
If you consider the wall as an exterior wall, I get a line load of about 7.5 kN/m. (Very approximate since I don't have the exact dimensions, but I have some margins instead) A glue-laminated beam with a span of 3.6 m then needs to have the dimension 90x270 to keep the deflection under 1/300 of the span.
If you can go up to the cold attic to the gable extension and take a photo, maybe we can get an idea of how it looks?
140x225 is closer to 90x270.
Always nice with feedback!