Sizing carport, high-profile sheet?

[ltfrebac]

I was thinking of building a carport for the caravan next to the spiketältet. I immediately felt that high-profile roofing sheets would be the simplest since the things need to be assembled 35 miles away up in the mountain area. The idea is to put up a support beam parallel to the porch and simply lay the roofing sheets resting on the porch and the beam. The porch has a basically flat roof, about 7 degrees, and slopes away from the planned carport. Is this too simple and simply not sustainable? See picture. With high-profile sheets, can you completely skip the roof joists or do you need to have them, but in smaller dimensions, for stability?
I was thinking of screw piles 0.7m long for the three posts.

 

[justusandersson]

If you choose, for example, Plannja 70 with sufficient sheet thickness, it can be self-supporting between the load-bearing beam and the house wall, allowing you to skip the roof rafters. If you opt for a slightly stronger glulam beam, such as 78x270, you can exclude the center post. However, the construction must be stabilized with studs between the load-bearing beam and the house wall in two places. While waiting for the roof sheet to be installed, a temporary diagonal in the plane of the roof is needed.

 

[ltfrebac]

Any idea about the dimension of the bracing between the bearing beam and the house wall? Is 45x95 sufficient? Do you need to cross-brace between the posts?

 

[justusandersson]

Any idea on the dimensions for the bracing between the support beam and the house wall?

It's mostly a matter of appearance. I would suggest 45x145 positioned so that they resemble fascia boards but beneath the metal edge. Additional bracing for the posts is not needed as the metal handles that task.