Hello everyone,
I've received building permission to remodel my garage, which is attached to the house. The old garage had a flat roof with tar paper that became damaged due to leakage, and the new one to be built on the same concrete slab will have a gabled roof extending out in front of the doors to form a carport. The protruding section will be supported by two steel beams bolstered by pillars at both ends.
I've chosen steel beams to maximize the height under the carport, as a window on the house will be there. What I need advice on primarily is what type of beam should be used and what dimension it should have. The beams will be 6.15 meters long. The snow load zone in Sollefteå seems to be between 2.5-3.
The person who granted the building permit thought I could manage with just one beam on the far end, and that's likely possible, but then the dimension of it would probably need to be more substantial to support everything alone, plus it feels safer to have one in reserve in case of an accident and someone hits the pillar.
I am attaching drawings of the roof truss and how the construction looks in rough sketch.
Best regards,
Marcus
I've received building permission to remodel my garage, which is attached to the house. The old garage had a flat roof with tar paper that became damaged due to leakage, and the new one to be built on the same concrete slab will have a gabled roof extending out in front of the doors to form a carport. The protruding section will be supported by two steel beams bolstered by pillars at both ends.
I've chosen steel beams to maximize the height under the carport, as a window on the house will be there. What I need advice on primarily is what type of beam should be used and what dimension it should have. The beams will be 6.15 meters long. The snow load zone in Sollefteå seems to be between 2.5-3.
The person who granted the building permit thought I could manage with just one beam on the far end, and that's likely possible, but then the dimension of it would probably need to be more substantial to support everything alone, plus it feels safer to have one in reserve in case of an accident and someone hits the pillar.
I am attaching drawings of the roof truss and how the construction looks in rough sketch.
Best regards,
Marcus
If the roof truss you intend to use is to be used, it should have 4 supports according to the truss calculation. According to the sketch, it doesn't look like the beams are placed in the same location as the supports. If you want an extra beam, the truss calculation should be adjusted.
The trusses also rest against the wall above the doors and then there will be an extra strong I-beam in the middle of the garage to be able to attach a hoist block to it. The beams I need advice on are those under the carport section. I also forgot to mention that there will be sheet metal on the roof.
Then one of the beams is not necessary as the roof trusses do not need this support. As far as I can see, only the support reactions in failure are presented, so one would also need to see the calculation report that should accompany the "drawing." Using the loads at the failure limit likely results in an unnecessarily large beam.
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