Hi,
I have an extension that is 5m long and 6m wide with a load-bearing wall in the middle. We want to open it up to make it a large conservatory, but we need to reinforce the ridge beam first. The ridge beam is 90x315, but according to the calculation program, it should be at least 90x405. Can you reinforce the ridge beam by screw-gluing an additional glulam beam (90x90 or 90x115) on the underside between the posts and achieve the same strength as a glulam beam of 90x405? Snow load zone 2.5
Any tips and feedback are welcome. This is my first post here on the forum.
I have an extension that is 5m long and 6m wide with a load-bearing wall in the middle. We want to open it up to make it a large conservatory, but we need to reinforce the ridge beam first. The ridge beam is 90x315, but according to the calculation program, it should be at least 90x405. Can you reinforce the ridge beam by screw-gluing an additional glulam beam (90x90 or 90x115) on the underside between the posts and achieve the same strength as a glulam beam of 90x405? Snow load zone 2.5
Any tips and feedback are welcome. This is my first post here on the forum.
Member
· Västernorrland
· 12 012 posts
What you have come up with sounds weak logically... It usually requires massive beams if it is completely open.
Post the question in the building physics section of the forum and you might get an answer: https://www.byggahus.se/forum/forums/byggnadsfysik.166/
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Two combined beams do not provide the same strength as a homogeneous beam. Unless you manage to join them as well as factory gluing. And that's not possible.
But how much worse it would be, I dare not have an opinion on.
But how much worse it would be, I dare not have an opinion on.
There is a lot of shear in the beam, it needs to be glued to handle it. I'm not sure how you'll manage to do that on-site and quality-assured.
What you need to do is contact a structural engineer who can tell you what and how to reinforce, in paper format that you can include in the building permit/application.
Good luck!
What you need to do is contact a structural engineer who can tell you what and how to reinforce, in paper format that you can include in the building permit/application.
Good luck!