What is behind the back of the sofa then? Is it the garage wall? You don't want a slope towards the garage.
Edit: Oh, it's not that. Then you can have the slope in that direction, but you need to put up some posts that can handle the load. You also need to stabilize the construction against shear since you're not fastening any side to a wall.
Edit: Oh, it's not that. Then you can have the slope in that direction, but you need to put up some posts that can handle the load. You also need to stabilize the construction against shear since you're not fastening any side to a wall.
Behind the back, i.e., to the right on the plan, there's the property line (a hedge). I want the rainwater to run there.tommib said:
The garage gable is against the top line on the plan.
The bottom line on the plan is also a property boundary.
Well, the "post" in my picture was meant to be a stable wall (e.g. the gable of a house). But with loose posts, there might be problems. You could solve it with a "counterweight" on the other side:O olahall said:
Edit: Ask the neighbor on the other side of the hedge if he accepts a concrete foundation with a steel cable in the middle of his lawn.
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I'm thinking that the load won't be very large if I choose a really simple plastic roof. Then it should be enough with relatively small beams to attach the roof to. If I go with CC 100, it will be 5 pieces + the roof. In total, it can't weigh more than 50 kg + the beam.
I'm not a pro but maybe a total weight of max 150-180 kg???
Then snow on top of that...
2 dm of snow would weigh about 240 kg max...
So the beam should be able to handle about 400 kg at most, which would likely be an exception. Lots of snow, that doesn't fall off...
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I was a bit too quick there...T tobbbias said:
It's actually 3 x 4 m (hard to see on the drawing).
But, in that case, it would still be around 2.4 m3 if it's 20 cm of snow.
I counted 100kg/m3 for the weight of snow, which in that case would be 240 kg. But wet snow is obviously heavier...though hardly like water, I think. Half the weight of water would be about 1200 kg.
I live in Skåne, so it doesn't happen often...
I don't know how to calculate "correctly." But I think you would have to increase the slope in that case.
Therefore, it feels best in my gut to make a frame construction.
Of course, a truss is even better, but then you have to calculate it with a Cremona force diagram. I once could do that (had an A in construction engineering)
It would probably work with a truss in 45x45 studs. But you'll have to calculate that yourself, I don't remember a bit of it after 40 years.
It would probably work with a truss in 45x45 studs. But you'll have to calculate that yourself
, I don't remember a bit of it after 40 years.If I knew what you are referring to, I probably wouldn't have written here in the forum...GoC said:
Of course, a truss is even better, but then you'll have to calculate it with Cremona's force diagram. I could do this once (had a 5 in construction engineering). It probably works with a truss made of 45x45 studs. But you'll have to calculate it yourself
:/
I just want to point out that this may require a building permit. In my municipality, you can have a maximum of 15 square meters of roofing, then a building permit is required for more than that... And they count the total area of roofing on your lot... And if I remember correctly, the roofing takes up building space on your lot, so there is also a maximum limit on how much you can build... this is info so you don't have the municipality after you.
My boring input in your whole dilemma is that it's probably difficult to achieve something that looks acceptable from a design perspective. I would definitely build a square pergola structure around your sofa and then place a plastic roof on top of it. The easiest way is to take down the plastic roof in late autumn and use it as weather protection over your sofa, then cover everything with a tarpaulin.
What's nice about a pergola is that you create a "room" on your patio that makes it feel like you're naturally in a "sofa room," and outside, you're in a "sunbathing chair room," etc.
The downside of a pergola is that you get 4 posts...
But give some more thought to your ideas. Good luck!
What's nice about a pergola is that you create a "room" on your patio that makes it feel like you're naturally in a "sofa room," and outside, you're in a "sunbathing chair room," etc.
The downside of a pergola is that you get 4 posts...
But give some more thought to your ideas. Good luck!