Hello,
I am planning to extend a vacation home and am working on a sectional drawing for the building permit. The current house has exterior walls with a height of about 2 meters and then a slightly sloping ceiling inside, which results in the ceiling height being about 2.2 meters. This means that the horizontal ceiling beams do not rest directly on the exterior walls but instead sit a bit higher up. I am attaching a drawing, so it might be easier to understand what I mean. My question is whether it is okay to build this way? (all the roof truss drawings I have seen mostly have horizontal beams resting on the exterior walls)
I can add that the ridge height is 3.4; building height is 2.2m, and building width is 4m.
Thanks!
I am planning to extend a vacation home and am working on a sectional drawing for the building permit. The current house has exterior walls with a height of about 2 meters and then a slightly sloping ceiling inside, which results in the ceiling height being about 2.2 meters. This means that the horizontal ceiling beams do not rest directly on the exterior walls but instead sit a bit higher up. I am attaching a drawing, so it might be easier to understand what I mean. My question is whether it is okay to build this way? (all the roof truss drawings I have seen mostly have horizontal beams resting on the exterior walls)
I can add that the ridge height is 3.4; building height is 2.2m, and building width is 4m.
Thanks!
It is possible to build like that. Just need to get the sizing right. It probably requires slightly sturdier frames compared to "standard" roof trusses.
What limitations do you have regarding the size of the beams?
(I assume it should follow the existing roof's profile both inside and outside?)
There are probably others here who can guide you in the right direction regarding the sizing itself.
What limitations do you have regarding the size of the beams?
(I assume it should follow the existing roof's profile both inside and outside?)
There are probably others here who can guide you in the right direction regarding the sizing itself.
Thank you for the quick response!
The extension is essentially a widening of the section in the picture above (previously it was just over 2 meters wide, but it will now be 4 meters). However, the ridge height is greater than it was before, and after the extension, the roof slope will be just over 29 degrees. The cabin is located in snow zone 2.
The drawing above is made with 45*170 sloped and 45*120 horizontal beams, 1200 cc to the rafters - the calculation is a pure guess on my part and mostly taken from the dimensions for a garage with approximately the same measurements on the Swedish wood industry's website, i.e., it would feel much safer if someone could guide me on how to make a more scientific calculation. Unfortunately, I can't increase the ridge height without lowering the roof's profile inside if the dimensions need to be increased.
Once again - thank you for the response!
The extension is essentially a widening of the section in the picture above (previously it was just over 2 meters wide, but it will now be 4 meters). However, the ridge height is greater than it was before, and after the extension, the roof slope will be just over 29 degrees. The cabin is located in snow zone 2.
The drawing above is made with 45*170 sloped and 45*120 horizontal beams, 1200 cc to the rafters - the calculation is a pure guess on my part and mostly taken from the dimensions for a garage with approximately the same measurements on the Swedish wood industry's website, i.e., it would feel much safer if someone could guide me on how to make a more scientific calculation. Unfortunately, I can't increase the ridge height without lowering the roof's profile inside if the dimensions need to be increased.
Once again - thank you for the response!