I am planning to remove a wall in connection with the renovation of the kitchen in our holiday home. The wall is load-bearing and I need to install a beam. The length of the beam needs to be 3.5m and the floor above that the beam will support spans 6m. Using a sizing program for glulam beams, I find that I need a glulam beam of 90x270 or 65x310mm. The room above (half-floor) is a bedroom.
In my eyes, the beam seems very robust. If the rooms above are exposed to a large load and you, e.g., drag in heavy furniture like a piano, I can understand it, but a bedroom? Is there anyone who dares to assess the risk if I reduce it to, e.g., 90x200mm? I have also tried to find information on how much shorter a steel beam would be with the same load-bearing capacity as a glulam beam. It will, of course, be heavier, but I am keen that the beam does not build more than necessary. The ceiling height is limited!
Grateful if anyone can advise me.
Ulf
In my eyes, the beam seems very robust. If the rooms above are exposed to a large load and you, e.g., drag in heavy furniture like a piano, I can understand it, but a bedroom? Is there anyone who dares to assess the risk if I reduce it to, e.g., 90x200mm? I have also tried to find information on how much shorter a steel beam would be with the same load-bearing capacity as a glulam beam. It will, of course, be heavier, but I am keen that the beam does not build more than necessary. The ceiling height is limited!
Grateful if anyone can advise me.
Ulf
Hello!
I am addressing your second question.. A steel beam that should handle the same load as a glulam beam will be lower. How much, I dare not say. The beam with the best performance in terms of height/bending resistance is the HEA beam.
There is another thread on the forum where this exact topic has been discussed in detail before. Use the search function.
I am addressing your second question.. A steel beam that should handle the same load as a glulam beam will be lower. How much, I dare not say. The beam with the best performance in terms of height/bending resistance is the HEA beam.
There is another thread on the forum where this exact topic has been discussed in detail before. Use the search function.
I have been searching for some time on how to size an HEA beam in my case, but with very poor results. Glulam manufacturers make it easy for us with tables and programs, but for steel, the help seems to be limited.
Does anyone have any tips? (I have searched in all forums but can't find anything directly that I can use).
Best regards,
Ulf
Does anyone have any tips? (I have searched in all forums but can't find anything directly that I can use).
Best regards,
Ulf
Check this out:
http://www.byggahus.se/forum/showthread.php?t=41757/24#24
No direct help with the sizing, but some useful information nonetheless.
http://www.byggahus.se/forum/showthread.php?t=41757/24#24
No direct help with the sizing, but some useful information nonetheless.
A 3.5m long glulam beam 90x270 L40 (indoor) can be replaced with an HEA120. (Please note that I don't take responsibility for your original calculation, just translating the result to a steel beam)
http://www.boverket.se/upload/publicerat/bifogade filer/2003/regelsamling_for_konstruktion.pdf
residential buildings must be calculated for 2.0kN/m[sup]2[/sup] (0.50kN/m[sup]2[/sup] bound and 1.50kN/m[sup]2[/sup] free) It's not meant for the next owner to be forced to reinforce the structure because he uses your bedroom as a music room....
/Ingenjören
According to Boverket's Structural Design Regulations
http://www.boverket.se/upload/publicerat/bifogade filer/2003/regelsamling_for_konstruktion.pdf
residential buildings must be calculated for 2.0kN/m[sup]2[/sup] (0.50kN/m[sup]2[/sup] bound and 1.50kN/m[sup]2[/sup] free) It's not meant for the next owner to be forced to reinforce the structure because he uses your bedroom as a music room....
/Ingenjören
Thanks for the tips. I guess it will have to be a HEA120 after all. I don't want to be responsible for a waterbed or a piano coming crashing down...
Does anyone have information on the support length for a steel beam versus glulam? The glulam dimensioning indicated a 66mm support for a 66*315mm beam. I can hardly believe that a steel beam would require more, but if anyone has better info, I would appreciate it.
Ulf
Does anyone have information on the support length for a steel beam versus glulam? The glulam dimensioning indicated a 66mm support for a 66*315mm beam. I can hardly believe that a steel beam would require more, but if anyone has better info, I would appreciate it.
Ulf
66mm bearing is surely sufficient. More critical is perhaps the material the beam will rest on, how hard is it? Is it wood, concrete, brick?bengtner said: