We have planning permission to change the roof on our extension. From a bulky mono-pitched roof to a low-sloping seam-covered metal roof. All to try to make this large extension blend in a bit better. There weren't many drawing requirements from the municipality, I provided a simple cross-section with 195mm joists.
Question 1 - Does my idea for the roof structure work?
Orange is 2.5x8” which I planned to reuse from the current one. Other green ones are 45x145mm, spaced 1200mm apart. It will have 23x120 tongue and groove on it.
The diagonal is about 6.5m, will need to splice, so I thought of a lower support beam roughly in the middle. One 4m, the other 4.5m.
The lowest slope in the longitudinal direction is 1:10.
Snow load zone 1.5.
Question 2 - Does the wall support work? Can I handle the extra load from the extension's roof?
We realize that we would like to make an opening as shown in blue. Originally a later project, but it may be best done now when everything is open. Before I proceed, I would like an assessment that it can be implemented.
I used the wood guide's calculation tool, external wall load-bearing for 1 1/2 floors. Load on 2x22.7kN.
Googled that an HEA180 could replace a glue-lam beam of about 90x450. Length 3.7m.
Columns in glue-lam 90x90 or 115x115, length 2.7m.
I would like the middle floor to rest on the beam so that the ceiling is even.
The new roof was built this summer.
The load distribution remains.
I had someone here from the forum who was going to calculate the load distribution. But unfortunately, he is no longer available.
Does anyone have tips on a structural engineer who can help me? I have summarized all the facts needed for the calculation, that's as far as we got.
//Fredrik
Click here to reply
Vi vill skicka notiser för ämnen du bevakar och händelser som berör dig.
