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238 replies
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238 replies
Opening in exterior wall
Member
· Blekinge
· 10 117 posts
The choice of screws is not covered by any building permit. I don't know offhand what WTS 3.6 has for load-bearing values, but I find it hard to believe they would be higher than an M10x120, for example.
It's getting closer
When I cast the footing for the pillars, can I mix expanding concrete and regular concrete? So first I cast the majority with regular concrete and then just do the final undercasting with expanding concrete?
When I cast the footing for the pillars, can I mix expanding concrete and regular concrete? So first I cast the majority with regular concrete and then just do the final undercasting with expanding concrete?
I haven't really followed the thread like the others, so I might not be completely up to speed with what you're doing. But that's generally how it's done, yes.D Derbyboy said:
The main foundation is cast in concrete, and then the pillar is underpoured at a later time with expanding concrete.
Self-builder
· Arvika
· 1 527 posts
Nice 

Member
· Blekinge
· 10 117 posts
How exciting! Imagine how long it has taken.
@justusandersson! Can you, based on this image, say how many mm deflection the beam has at full snow load? I'm trying to figure out if I can build a canopy.D Derbyboy said:
Thank you so much!
Member
· Blekinge
· 10 117 posts
Do you think I'm an oracle? Both @bossespecial and I have probably calculated it once, but it's not something I remember. You need all relevant measurements and data if you're going to calculate the deflection. But since it's a sensitive application with a beam over sliding windows, I don't think you should put more load on the wall. It's better if you make a canopy that stands on four legs. It can also become more elegant.
I don't think, I know that you are an oracle but I understand and I agree.
I thought like this:
I probably can't get a building permit for a large canopy 25 m2+, so I’ll just build a small one (6-8 m2) until the building rights are extended (about 5-10 years) and then maybe I can hang it over the sliding door section.
To make it look nice, I mean that the rear support beam including the rafters needs to be recessed into the roof truss.
I need at least something small because the sliding door section lets in a little water in the lower track
I thought like this:
I probably can't get a building permit for a large canopy 25 m2+, so I’ll just build a small one (6-8 m2) until the building rights are extended (about 5-10 years) and then maybe I can hang it over the sliding door section.
To make it look nice, I mean that the rear support beam including the rafters needs to be recessed into the roof truss.
I need at least something small because the sliding door section lets in a little water in the lower track





