Sketched a bit on an opening for a "carport", the idea is 8.5 meters wide (minus the width of the posts) and the opening height is 3m.
I first looked at byggbeskrivningar.se and then made my own FEM model which gave the same deflection values, so I assume my load and properties for the glulam beam are fairly OK.
Then I modified it a bit and concluded that if the posts are made of steel and the corners are reinforced, you only get a deflection of 8.6mm for a 115x405 glulam beam. The small 45-degree pieces in the corners of the opening are 1 meter. I might consider reinforcing these further.
What I want is, given a 3m opening in height, to minimize the total height of the building. So I'm a bit tempted to go down another notch in the glulam beam, but... I'll probably stop here unless someone comes with a brilliant idea to reinforce it??
Steel beam is also an option, but it has its drawbacks, so I'll probably stick to a glulam beam.
Then it feels like the roof rafters are a bit excessive. It complains that 45x245 wouldn't work, which feels a bit exaggerated. The depth of the structure is 3m, by the way. Just going to add TP20 sheet metal.
