Help with Beam Sizing

[bonnen]

I am going to build a canopy for my machines, it is intended to be 10*15 meters.

I need some help dimensioning the carrying beams. The roof will be a sloped roof with a 6-degree angle, self-supporting roof sheet. Snow load zone 2.5

There will be three carrying beams, each 15 meters long. What dimensions should it be if I use glulam (I suspect 90*405)? If I use steel beams, what would the dimensions be then?

 

[Gladh]

Hello.

Regarding the glulam beam, maybe you can find something here: http://www.byggbeskrivningar.se/byggbesk.aspx?Cid=462&Id=44

90*405 seems a bit too flimsy for 15 meters, I myself used 90*315 for 3 meters over a window (and it was a tight fit but there wasn't more space), but of course, it was a concrete roof and a 1½-story house. But still...

 

[hempularen]

It will be quite a long span if you need 15 meters. I think that with such a construction, you'll have a few other interesting loads to consider. There can be considerable twisting forces from the wind. If you then only have stiffening walls on 3 sides or possibly only on 2 sides, it can become sensitive.

 

[hakaner]

Can you place any columns under the screen roof, so that you have a span of 5 or 10m? Or will they be too much in the way then?

http://www.svensktlimtra.se/Upload/File/publikationer/SV_Limtra_WEB.pdf Take a look at p.39, read through pages 18-36, there is a simplified explanation of how you dimension... Let me know if you need help interpreting the tables...

 

[bonnen]

Oh, I missed some info there I see of course, there should be columns, it will be 4 columns per beam so the distance between the columns will be 5 meters.