I have calculated that I need a glulam beam of 115x495mm for a construction I am doing, which is too bulky, so I need to use a steel beam instead but what dimensions should it have???

/Andreas
 
Boring answer but a contractor must look at this, use the one you used for the glulam beam. The positive thing is that it becomes smaller!!!! ;)
 
Here is some more info. The beam will be used in a 1 and 1/2 story house on the ground floor where I will remove a part of the wall that supports the floor structure to the second floor. The width of the house internally is 8400 mm, and the span of the floor structure is 3600 and 4700 mm respectively. Regarding the quality of the glue-laminated beam, I actually don't know as I just called my building supplier who calculated it for me. He also said that the glue-laminated beam will hang down 14 mm despite being quite thick. What bothers me is the height of the beam - 495 mm with a ceiling height of 240, so it doesn't work well. I would have preferred the beam to be no more than 280 - 300 mm high. In the worst case, I might have to build in a support halfway along the length, so 3m out of a total of 6m. I prefer this over taking too much of the ceiling height. Then it's obviously also a cost issue; it's good if it doesn't cost too much. I was wondering if I couldn't use two glue-laminated beams side by side instead and save a bit on the height?

/Andreas
 
It might be that "my builder's merchant" is not much of a constructor?

But Builder, the line load will be about 9 KN/m, slightly more than 70 kg. I think your decimal point might have jumped a bit.
 
sturdy beam it will be... decrease the span is my tip :-/
 
on Tibnor's website www.tibnor.se there are price lists for beams and other steel products
 
Haven't had internet for a while and therefore couldn't reply. I spoke with my local steel dealer who said that an HEA beam that is 7 m long and 200 mm high can handle a load of about 2.5 tons. He thought it would be too weak, so he recommended an HEB with the same dimensions that should handle 6.5 tons. I could get that for 4500kr plus VAT which I can deduct, and 400kr in shipping for 4 miles one way. I'm considering going for it, just need to submit the floor plan to the municipality so they can do some calculations. The problem will be getting it in place, it apparently weighed just under 500 kilos. How strong do the supports need to be for such a piece?

And yes, it'll be a sturdy beam :)

/Andreas
 
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