Hello! I don't know much about construction techniques, but I'm looking into planning for a carport that will be about 100sqm. To keep the cost down, a concrete slab is not interesting, so it will be gravel. The question is how the carport should be constructed.
I'm thinking about casting foundations only under the walls. Does this work in practice?
Below, I show a simple version of what I have in mind. What is the cheapest way here?
Is it okay to dig to a frost-free depth, then you probably need a fair amount of macadam, and then can you just cast a "wall" in the ground about 30cm wide or something? Which you will then attach the sill and the wall to?
I was thinking of building the walls out of wood and then placing trusses on top of that.
But as I said, I'm not really sure how to do this smartly in practice. Any tips are welcome!
Possibly, you could remove two of the posts and only leave the one in the middle
I'm thinking about casting foundations only under the walls. Does this work in practice?
Below, I show a simple version of what I have in mind. What is the cheapest way here?
Is it okay to dig to a frost-free depth, then you probably need a fair amount of macadam, and then can you just cast a "wall" in the ground about 30cm wide or something? Which you will then attach the sill and the wall to?
I was thinking of building the walls out of wood and then placing trusses on top of that.
But as I said, I'm not really sure how to do this smartly in practice. Any tips are welcome!
Possibly, you could remove two of the posts and only leave the one in the middle
If you're going to have such a truss construction that supports the entire span, it will also bear at the far ends. That is, you don't need any posts at all. BUT, that's not something you build without proper structural calculations. It will be a span of up to 13 meters or something like that. You'll need sturdy trusses for that!
The required thickness of roof trusses depends on the snow load zone. In snow zone 1, 12 meters can be achieved with regular timber.
http://www.traguiden.se/TGtemplates/popup1spalt.aspx?id=204&contextPage=1465
http://www.traguiden.se/TGtemplates/popup1spalt.aspx?id=204&contextPage=1465
Do plinths get better? Does it mean a thicker post up to the roof truss every 1.2m? In my mind, it feels more stable to erect a complete wall and attach it to a long concrete foundation than to set separate posts in the ground. It might end up the same, but I'm thinking a bit about how the ground changes as well. The weight from the roof is distributed more if spread across the entire surface, so it likely won't settle unevenly as easily?
Regarding the roof, it might happen that I reduce the span depending on price and such. But the important thing now is to finalize a construction concept that works. I can definitely consider supporting the roof trusses in the middle of the carport lengthwise as well. It will mostly be for storage, so a post here and there inside doesn't bother me.
But as much as possible, I want to build with "cheap" construction timber and not laminated wood.
Regarding the roof, it might happen that I reduce the span depending on price and such. But the important thing now is to finalize a construction concept that works. I can definitely consider supporting the roof trusses in the middle of the carport lengthwise as well. It will mostly be for storage, so a post here and there inside doesn't bother me.
But as much as possible, I want to build with "cheap" construction timber and not laminated wood.
Yep.
It's more work to raise a complete wall than to raise posts. Which you then build together with some sort of panel on the outside.
Then, of course, you insert a suitable beam at the top of the posts.
Just some thoughts from my side.
It's more work to raise a complete wall than to raise posts. Which you then build together with some sort of panel on the outside.
Then, of course, you insert a suitable beam at the top of the posts.
Just some thoughts from my side.
What kind of soil do you have? The type of foundation that is suitable depends on the soil's bearing capacity and susceptibility to frost. Now, I don't want to scare you, the simplest way is to do like everyone else and over-dimension. Ask the neighbors. How are their patios founded?
It might be worth checking the cost of ordering pre-made roof trusses.
It might be worth checking the cost of ordering pre-made roof trusses.
Since all the geotechnical engineers nearby seem unwilling to work, I haven't been able to get a survey done. But I can definitely over-dimension, as long as I know what type of construction to use.
Well if it only concerned the carport but I will also be building a house and a garage. So I will know more about the land after I get one done
garage + 100 sqm carport, how many cars do you have?
The difference between foundation+posts and a strip foundation is possibly that with a strip foundation you get a seal at the bottom all around, but with foundation + posts there will be a gap, unless you lay leca or something to seal it.
The difference between foundation+posts and a strip foundation is possibly that with a strip foundation you get a seal at the bottom all around, but with foundation + posts there will be a gap, unless you lay leca or something to seal it.
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· Nuevo Estockholmo
· 3 529 posts
I only have 2 cars, one of which is a van, but I wouldn't hesitate for a second to complement my 40 sqm garage with a 100 sqm carport.thomasx said:garage + 100 sqm carport, how many cars do you have?
The difference between foundation+posts and a slab is possibly that with a slab you get a seal at the bottom all around, but with foundation + posts there will be a gap unless you lay leca or something to close it.
If I had the time and a larger lot...
Too many "good deals" that need fixing in the future
It's leaning towards posts now, I don't mind a gap, and I discovered that it becomes both simpler and cheaper Still sketching on a construction solution but I think I've got it figured out. I'll show if I CAD one up
It's leaning towards posts now, I don't mind a gap, and I discovered that it becomes both simpler and cheaper
Still sketching on a construction solution but I think I've got it figured out. I'll show if I CAD one up I have a 120sqm garage with 12m roof trusses and they are of "normal" 45mm dimension. However, I have not calculated and built them myself, but on the other hand, that's the only thing But it's a hipped roof with some glulam beams in it as well, so it felt good to have the trusses pre-delivered and lifted upon delivery.
But it's a hipped roof with some glulam beams in it as well, so it felt good to have the trusses pre-delivered and lifted upon delivery.Interesting Planning a similar build but a bit smaller. I have planned to pour a sill like you around (but not where you drive in with the car , wanted to clarify). However, I won't have as large a span on the trusses as you do, just 6 meters. The advantage I see with pouring around is that it's covered all around, and you're prepared if you want to pour a slab in the future and it looks nicer. But the question is, do you need to anchor it or is it enough that the casting mold is 5-10 cm below ground level (Of course, you have base layers and all that before)? Just hope I didn't steal the thread with my questions.
Planning a similar build but a bit smaller. I have planned to pour a sill like you around (but not where you drive in with the car , wanted to clarify). However, I won't have as large a span on the trusses as you do, just 6 meters. The advantage I see with pouring around is that it's covered all around, and you're prepared if you want to pour a slab in the future and it looks nicer. But the question is, do you need to anchor it or is it enough that the casting mold is 5-10 cm below ground level (Of course, you have base layers and all that before)? Just hope I didn't steal the thread with my questions.
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