T tobbbias said:
My boring input on your entire dilemma is that it's probably difficult to achieve something that looks acceptable from a design perspective. I would definitely build a square pergola construction around your sofa and then put a plastic roof on top of it. The easiest way is then to take down the plastic roof in late autumn and place them as a roof cover over your sofa and then a tarpaulin around everything. The lovely thing about a pergola is that you create a "room" on your patio which makes it feel like you are naturally in a "sofa room" and outside you are in a "sunbathing deck chair room" etc. The downside of a pergola is that you get 4 posts. But keep thinking about your ideas. Good luck!
I have that idea as plan B. But don't quite want to abandon my first wish yet...

I'm working on some drawing here... Could this possibly hold?

I'm thinking of a pergola construction, without the posts.

I'll skip the roof, but put up a sailcloth in the summer.

But need a beam/construction across in that case.
Hand-drawn sketch of a pergola design showing measurements and labeled sections A and B, intended for a summer sailcloth cover. Pencil sketch of a pergola frame design with measurements, showing a truss structure and dimensions of 6.50m total length, divided into sections.
 
You have to keep in mind that that one will look very very ugly :crysmile:(y)
 
What should stabilize the beam at the lower end at the measurement 9.8? In the right/left direction in the image...
 
T tobbbias said:
What will stabilize the beam at the lower end at the measurement 9.8? In the direction right/left in the picture...
It's resting on a pole, which stands outside the deck.
 
T tobbbias said:
You have to consider that it will look very very ugly :crysmile:(y)
Maybe...but I'm thinking of oiling it with white pigment, so it gets the same color as the deck.

Outdoor deck with grey wicker furniture set, under a large white sunshade, surrounded by wooden fencing and greenery.
 
Regardless of what beam you place across everything, it will look terribly ugly. You only need a post in the "corner," and you'll have a much sleeker and more attractive construction. Alternatively, place bearing beams diagonally on top of the posts and roof rafters on that. See attached messy image Hand-drawn construction sketch showing a beam (Bärlina) and post design. Text indicates "Regel uppe på stolp" and highlights diagonal placement.
 
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tobbbias and 1 other
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GoC GoC said:
No matter what beam you put across everything, it will look terribly ugly.
You only need a pole in the "corner" for a much sleeker and nicer construction.
Alternatively, place diagonal load-bearing beams on top of the poles and roof rafters on that.
See the attached sketchy picture
[image]
That was not a bad idea at all! :D
THAT might even fit better with the execution of the rest of the build!

I'll ponder and perhaps develop it a little!

Thank you!
 

Best answer

I thought of another solution where the rafters fan out like a handheld fan from the corner post behind the sofa. It could be stylish and you avoid having to place rafters between the posts.
 
Something like this,
Very messily drawn but it shows the principle
Rough pencil sketch showing lines radiating from a corner, illustrating a construction principle.
 
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Magnus E K
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GoC GoC said:
I thought of another solution where the roof joists fan out from the corner post behind the sofa. It could look cool and you can avoid placing beams between the posts
I was thinking about that one too!
 
GoC GoC said:
Something like that,
Very messily drawn but it shows the principle
[image]
My question now is how long this (marked in red) can be without a pole???
...and what dimension I need to have on it???
Drawing of beams in a triangular arrangement, with one beam highlighted in red.
 
Measured a bit now...
The longest support beam will be approximately 440cm.

The longest cross beam will be a total of 570cm, with 250cm freely hanging (marked in red).

Spontaneously, it feels like this would be a simpler and significantly more stylish solution! :D

The question now is what dimensions of support beams and beams do I need???
Sketch of beams and joists layout with one joist highlighted in red, indicating a 250cm free span concern in a building project design.
 
I think it will be the aesthetics that decide
45x120 studs, you can have the longest one in a thicker dimension 45X145.
Beams 45x140 for the inner short one and 45x190 for the outer one, that way you also get a slight slope on the roof
Just a rough idea, but it should only be a fabric roof it needs to hold up
 
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olahall
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Yes, I can definitely use different dimensions to get the slope.
But the question is if I should perhaps settle for a larger dimension on the longest bearer only, so I get the slope backward towards the corner.
If I use a larger dimension on the longest rule as well, I also get a slope towards the sides.
That might facilitate drainage though...but I’ll end up with more water running down onto the deck than if I only tilt it backwards.

An alternative is the opposite...so the water runs towards the center, then back.

These decisions!!! Haha!
 
GoC GoC said:
I think it will be more the aesthetics that decide
45x120 rafters, you can have the longest in a heavier dimension 45X145.
Bearers 45x140 the inner short one and 45x190 the outer one, then you also get some slope on the roof
Just roughly sketched, but it should only be a fabric roof it needs to support
Offering a quick sketch... :)

A quick sketch of a wooden structure design with slanted roof beams and vertical supports.
 
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