Hi! We are planning to get a carport in front of our garage. But we've hit a small hurdle. When I've been searching for building materials, it seems like there are hardly any glulam beams that span the distance I need for the carport. The width of the space is 663 cm, but I mostly find beams that are 600 cm. Made a small simple drawing explaining how we thought it would work with the rest of the house. The garage is in a sort of semi-basement area, so the neighbor's lawn is almost at the height of the roof of the carport and garage.
Does anyone have a tip on how we can solve this? Another building technique? All help is appreciated!
Hello! We are planning to get a carport in front of our garage. But we have encountered a small obstacle. When I searched for building materials, it seems that there are hardly any glulam beams that span the width I need for the carport. The width of the space is 663 cm but I mostly find 600 cm beams. Made a simple drawing explaining how we plan for it to fit well with the rest of the house. The garage is in sort of a semi-basement section so the neighbor's lawn is almost level with the roof of the carport & the garage.
Does anyone have a tip on how we can solve this? different construction technique? any help is appreciated!
Best regards, Henke
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If you don't want a support column underneath at any location, then perhaps I-beams in iron, which you could possibly cover, are the way to go?
Yes, there are glulam beams in exactly the length you want. They might not be stock items in every building supply store but can be ordered.
I used 7.2m in my carport.
However, yours will be very large and expensive.
Haven't you considered any other solutions for the roof?
A 90x270 GL30c results in an overreach of 2 mm on the initial deflection (compared to L/300), all other checks are ok. However, this is negligible and I would therefore have chosen a 90x270 as a roof beam instead of 90x315. You save about 1000 kr per beam (90x315 vs 90x270) if you buy them as 9 m from Beijer.
A 90x270 GL30c has an overstep of 2 mm on the initial deflection (compared to L/300), all other controls are fine. This is negligible, and I would therefore have chosen a 90x270 as a roof beam instead of 90x315. You save about 1000 SEK per beam (90x315 vs 90x270) if you buy them as 9 m from Beijer.
I know I'm lazy myself and not very good at shoveling the roof. Therefore, I thought to go a bit larger. And I think it will be ordered in special lengths from the supplier Martinsons.
The snow load that is considered is the one that on average returns once every 50 years, so it's probably fine if you're not very skilled at shoveling the roof. Additionally, you have a utilization rate of 67% (with 90x270), meaning you have a 33% margin. Besides that, there are also quite a few other safety factors.
The 3 m that remain can perhaps be used in other constructions as well? But of course, you do as you wish.
The snow load that is accounted for is the one that, on average, returns once every 50 years, so it's likely okay if you're not very good at shoveling the roof. Additionally, you have a utilization rate of 67% (with 90x270), meaning you have a 33% margin. Besides that, there are many other safety factors as well.
The 3 m left over, maybe you can use in other constructions too? But of course, you do as you like.
Hmm, well maybe I should rethink that. I don't know yet how much price difference there is but it's likely to be costly. Thank you so much for the feedback.
I'm finishing up the drawing but have come across a design consideration.
Does it look terrible if the carport's panel and roof are not in line with the garage? I think the roof will stick out too much towards the neighbor's lawn if I have them in line, and I also have to extend so far from the pillars if I want the panel in line.
I'll upload a small video showing from the program I’m using for the drawing.
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