I am applying for a building permit for a small attached garage (3.5m x 8m). I have been in contact with the municipality, which held a meeting with the building permit department and expressed positive support for my proposal. My biggest limitation became the garage's width, the plot's buildable area, etc. Hence such a narrow garage.
The garage will have a roof terrace (shed roof with a 6º slope), and I need some help with construction calculations and dimensioning.
One idea I have is to specify in the building permit a designated area dimensioned to place a spa bath on. (See attached image)
Where I live, it's snow zone 2.5. The purple lines are laminated beams at cc30 where the spa bath can stand. The blue lines are laminated beams for the terrace decking at cc60.
I have preliminarily calculated the load on the area where the spa bath will be, at 8.5kn/m2 (Spa bath 5kn/m2 + Deck 1kn/m2 + Snow 2.5kn/m2) and the rest of the terrace at 3.5kn/m2. This is very approximate, and please correct me if I am completely off.
The dimension for the laminated beams should be like calculating a deck joist with additional load. I believe I can calculate this, and there are ready-made calculation programs for it. But what feels more difficult is the load on the garage's and house's exterior walls.
My questions:
1. Do you think the house's exterior wall can handle the load?
The house's exterior wall against the gable is 10m long, and there are no load-bearing interior walls. The house has truss roof beams. The studs in the exterior wall are 145x45mm at cc60. The house is on a crawl space foundation with leca blocks.
I am thinking of attaching a beam directly to this decking (see the red line).
Will the house's decking be able to bear this weight? Is there some sort of lateral tensile load – thinking so the wall doesn't basically buckle
2. The support beam
How do I calculate the dimension of the support beam attached to the façade? And what might it be?
3. The garage's exterior wall
Here I am thinking of 120x45mm at cc60. Is this sufficient, and how do I calculate this?
4. Anything else I should consider?
The garage will have a roof terrace (shed roof with a 6º slope), and I need some help with construction calculations and dimensioning.
One idea I have is to specify in the building permit a designated area dimensioned to place a spa bath on. (See attached image)
Where I live, it's snow zone 2.5. The purple lines are laminated beams at cc30 where the spa bath can stand. The blue lines are laminated beams for the terrace decking at cc60.
I have preliminarily calculated the load on the area where the spa bath will be, at 8.5kn/m2 (Spa bath 5kn/m2 + Deck 1kn/m2 + Snow 2.5kn/m2) and the rest of the terrace at 3.5kn/m2. This is very approximate, and please correct me if I am completely off.
The dimension for the laminated beams should be like calculating a deck joist with additional load. I believe I can calculate this, and there are ready-made calculation programs for it. But what feels more difficult is the load on the garage's and house's exterior walls.
My questions:
1. Do you think the house's exterior wall can handle the load?
The house's exterior wall against the gable is 10m long, and there are no load-bearing interior walls. The house has truss roof beams. The studs in the exterior wall are 145x45mm at cc60. The house is on a crawl space foundation with leca blocks.
I am thinking of attaching a beam directly to this decking (see the red line).
Will the house's decking be able to bear this weight? Is there some sort of lateral tensile load – thinking so the wall doesn't basically buckle
2. The support beam
How do I calculate the dimension of the support beam attached to the façade? And what might it be?
3. The garage's exterior wall
Here I am thinking of 120x45mm at cc60. Is this sufficient, and how do I calculate this?
4. Anything else I should consider?
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