Is there a simple way to translate a glulam dimension 90x300 to a steel beam in load-bearing capacity? I'm planning to build a deck and have been considering using steel for the frame to avoid having so many pillars since it will be quite high.
It would be an I- or H-beam supported by steel columns.
What kind of treatment is usually done for these when they need to be outdoors? Is it just rust-proof painting or do you order it from the supplier?
What do you think this solution would cost, for those who might have done this before? Is it outrageously expensive or manageable? Compared to glulam primarily??
It would be an I- or H-beam supported by steel columns.
What kind of treatment is usually done for these when they need to be outdoors? Is it just rust-proof painting or do you order it from the supplier?
What do you think this solution would cost, for those who might have done this before? Is it outrageously expensive or manageable? Compared to glulam primarily??
Best answer
Yes, it does. 90x300 glulam corresponds to, for example, HEA 160 and IPE 180. 90x315 is a more common glulam size. Its steel counterparts are HEA 160 and IPE 200.
I will pass on the question about rust protection treatment. Steel tends to be about twice as expensive as glulam.
I will pass on the question about rust protection treatment. Steel tends to be about twice as expensive as glulam.
Thank you very much for the response. What about the pillars then? I assume I should replace the corresponding 90x90 glulam pillars with steel.J justusandersson said:
It is not as simple to compare glulam pillars with steel ones without knowing the intended construction. Lateral and vertical bracing are important parameters.
Is it clearer according to the drawing, or are more parameters needed?J justusandersson said:
If you want to go down to three columns, the beam dimensions will be entirely different. In glulam approximately 90x495 and in steel HEA 220. For the columns, you need to know the height. Are you planning for the nail studs to cantilever one meter?
Yes exactly, the screw battens hang out about 1 m and the columns will be around 3-3.2m high.J justusandersson said:
There is too much overhang for 45x195 joists. I will look into it later today.
There's no problem for me to move up to 45x220 c24. I can also move out the support beam if needed. Yes, it would be really kind of you if you could take the time to look at this.J justusandersson said:
I would move out the bärlina half a meter and use 45x220 timber.
There are absolutely no problems. What dimension are we talking about for the pillars? Räcler 100x100 vkr or what would you choose?
VKR 100x100 4 mm thickness is more than sufficient. Considering loads and heights, you can reduce to 60x60, but there are practical aspects of the installation as well.
Aesthetically, I feel that 100x100 looks significantly nicer.J justusandersson said:
What mathematical terms are we talking about that might be needed in a building permit application? Deflection, etc. Do you know this?
A big thank you for all the help!
Of course. That's primarily what I look at. Deflection on load-bearing beams and joists < Span/300. Additionally, checking the deflection criterion on the floor joists. Live load 2 kN/sqm.E epw said:
I agree that 100x100 looks much nicer.