Hi,
We are going to demolish a load-bearing wall in our house.
The house is 9m wide, 16m long, and it is the main wall that is to be opened up. The roof trusses are set at cc1.2m intervals.
The opening we want is about 4.7m.
We have snow zone class 3.
I have received a calculation that we need a glulam beam with dimensions:
140x540 or 115x630 quality GL32c
Unfortunately, the beam is too tall, so we will need to switch to a steel beam, for example, HEA.
I have been given an estimated dimension for an HEA 220 (22cm high and 18cm wide).
Is there anyone who can help me with calculating or alternatively saying if the basis is reasonably sound?
Regards,
Sebastian
We are going to demolish a load-bearing wall in our house.
The house is 9m wide, 16m long, and it is the main wall that is to be opened up. The roof trusses are set at cc1.2m intervals.
The opening we want is about 4.7m.
We have snow zone class 3.
I have received a calculation that we need a glulam beam with dimensions:
140x540 or 115x630 quality GL32c
Unfortunately, the beam is too tall, so we will need to switch to a steel beam, for example, HEA.
I have been given an estimated dimension for an HEA 220 (22cm high and 18cm wide).
Is there anyone who can help me with calculating or alternatively saying if the basis is reasonably sound?
Regards,
Sebastian
The glulam and steel dimensions do not quite match each other. Glulam 140x540 corresponds most closely to HEA 260. If you compare in the other direction, HEA 220 (which is 21 cm high and 22 cm wide) corresponds more to 140x450. The sizing feels a bit over the top, but one needs access to a sectional drawing to say it with certainty.
J justusandersson said:
Hello,J justusandersson said:
Okay.
I have included a sectional drawing as well as a floor plan. On the floor plan, I have circled the wall that should be removed.
Thinking of placing the steel beam on studs/glulam with dimensions 115x115. Or does the steel beam need to be placed on a steel stud?
The house has truss rafters that only rest on the outer walls. There are no load-bearing interior walls on the ground floor. You don't need a beam. Who gave you that advice?
I think it's a bit strange that it's mentioned in the technical specifications according to the attached image below. Where it specifies that the load-bearing inner wall is made of studs and building board.J justusandersson said:
It is just sloppily filled in. Check what it says about takstolar.
Hi,J justusandersson said:
I have done that. And I think it's very vague.
It says you might need a load-bearing wall.
But not in clear text when you need it…
Yep, almost thought so. But there's actually nothing about them in my technical…K Kane said:
Here is everything mentioned in the technical..
They had skipped that detail about the truss type. The technical description is filled out by someone who isn't particularly knowledgeable. Disregard it. If the trusses look like those in the section drawing, you don't need a supporting beam.
Hi,J justusandersson said:
Sorry for questioning all the time, but I get a bit worried, it was a construction engineer who said I needed a beam support.
Dimensions of truss:
Bottom chord = 50mm x 130mm
Diagonal members have different designs. I'll include pictures of them as well.
The outermost members consist of 2 boards and 1 stud that are nailed together.
2 boards measuring 23mm x 100mm and 1 measuring 50mm x 100mm
The innermost members consist of 2 boards with dimensions 23mm x 100mm
Top chord = 50mm x 150mm
I really appreciate the help!
Best regards,
Sebastian
Forget the support beam. These trusses don't require one.