This is how it is set up at my place, i.e., a solid beam that the irons are attached to. It's certainly a completely different construction, but perhaps it gives an idea of how sturdy your construction should be.
In this case, there have been awnings mounted on that beam for many years, and it doesn't show at all. Unfortunately, the previous awnings were damaged by wind. Now I have a 5x3 from Hornbach, which I put up last year. I plan to add a 4x3 next to it. I think I paid about 6000 for it last year, and I am satisfied. It should withstand wind up to class 2, which is good for that price range. I will add another one and then a sun sensor and a wind sensor so I don't have to control it myself.
Have you replaced the control system with any smart control, such as via Wi-Fi, Homey, or similar, HA?
This is how it's set up at my place, that is, a solid beam into which the irons are attached. It's of course a completely different construction, but perhaps it gives an idea of how sturdy your construction should be.
In this case, awnings have been attached to that beam for many years and it doesn't show at all. Unfortunately, the previous awnings were blown away. Now I have a 5x3 from Hornbach, which I put up last year. I'm planning to add a 4x3 next to it. I think I paid around 6000 for the previous one last year and I'm satisfied. It should withstand wind according to class 2 which is good for that price range. I will add another one and then a sun sensor and wind sensor so I don't have to control it myself.
We have the same type of bracket but we screwed it against the rafter to avoid a board on the wall and it has worked well.
Used the 2 free holes you see in your picture that are facing up.
Installed 3 awnings that way.
We have the same type of bracket but we screwed it up against the ceiling joist to avoid the board on the wall and it has worked well.
Used the 2 free holes you see in your picture that are upwards.
Mounted 3 awnings that way.
Like this, but only upwards?
I'm considering moving the brackets down a few cm to get a better angle, or alternatively, if I can make the eaves a few cm narrower.
I mean, the awning itself is almost 20 high so hiding a beam behind it is probably fine.
The weight of the awning, 71 kg, is manageable.
But the self-deflection over time is probably what causes problems.
If I place a beam of 4.5 on two supports at the edge, it would probably sag regardless of dimension, but I honestly don't know. That feeling might be wrong.
If I choose a VKR, both bolts in the bracket must either be fastened above or below the beam, with an IPE I can almost position the beam behind the awning.