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2 replies
convert WW-rafter 23-degrees to Truss?
Hello!
I've searched but haven't found any examples, but does anyone here know someone who has converted their WW trusses with a low angle (23 degrees) to have an attic that can be furnished? (more loft)
The truss is 12 m wide, and the measurement from the bottom chord to the ridge is about 2.5 m (as I recall), which means it could work out quite well.
Has anyone done something similar?
I've searched but haven't found any examples, but does anyone here know someone who has converted their WW trusses with a low angle (23 degrees) to have an attic that can be furnished? (more loft)
The truss is 12 m wide, and the measurement from the bottom chord to the ridge is about 2.5 m (as I recall), which means it could work out quite well.
Has anyone done something similar?
I hardly think it's possible. That truss model is not recommended for that roof angle, it's usually 38-45 degrees. You might have 2.5m to the ridge today, but you probably won't even have 2m to the maximum height later due to the sizing, and then there will likely be a horizontal beam under the ridge (I don't remember what it's called). Truss trusses can generally be used for 25m, while a rigid-frame truss is recommended for max 15m. It's a big step to go from a truss truss to a rigid-frame truss. It also assumes that you have at least 1, preferably 2, load-bearing inner walls, which might not be the case as they're not needed for truss trusses.
I'm not an expert but I'm speaking from what I've learned when planning the garage where I want to have rigid-frame trusses, the garage will only be 6.6 wide, but it's a challenge as well without intermediate support. It would consist of 3, 45*220 beams in the lower frame, of which one is a Kerto beam. Then I have a roof pitch of 34.5 degrees, which makes it much easier than 23 degrees.
Send a quote request to www.takstolsfabriken.se and you'll see how they solve it if they do.
One should never say that it's impossible, but this is probably very close. If one is to use wood at least.
Take care and good luck.
I'm not an expert but I'm speaking from what I've learned when planning the garage where I want to have rigid-frame trusses, the garage will only be 6.6 wide, but it's a challenge as well without intermediate support. It would consist of 3, 45*220 beams in the lower frame, of which one is a Kerto beam. Then I have a roof pitch of 34.5 degrees, which makes it much easier than 23 degrees.
Send a quote request to www.takstolsfabriken.se and you'll see how they solve it if they do.
One should never say that it's impossible, but this is probably very close. If one is to use wood at least.
Take care and good luck.
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have to check that, we have 2 load-bearing walls relatively symmetrically underneath.
everything is a matter of forces and load, might as well brush up on the FEM knowledge a bit I suppose...
the idea is two roof dormers as well.. so there will be more space, but it won't be more than a max of 2 m ceiling height in the middle, that's correct. but it should still be significantly cheaper than raising the roof...
everything is a matter of forces and load, might as well brush up on the FEM knowledge a bit I suppose...
the idea is two roof dormers as well.. so there will be more space, but it won't be more than a max of 2 m ceiling height in the middle, that's correct. but it should still be significantly cheaper than raising the roof...
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