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Hi,
I'd appreciate anyone's thoughts or suggestions or recomendations.
I have a crappy old conservatory that needs something doing. Also it's too hot, so my thinking is to convert it into a garden / sun room. It's currently a lean-to with the left side wall being the garage wall, so the front and the right wall will need replacing.
My thinking is to rip out what's there, and build a simple stud frame, with a big window, some doors and a lantern on the flat roof. Joists would hang off the wall plate at the back onto the beam across the front wall. I'm think of building the whole lot out of C24 170x47. I'd be going for 400mm centres for the roof joists with double joists / trimmers where the lantern is going. Same C24 170x47 for the walls, spacings vary because of doors & windows but nothing exceeding 600mm, most a lot less. The front is 7.2m wide and the side wall is about 3.4m, say 3.6m for the joists. The front wall will have French doors of 1.8m and a window of 3.5m.
So now I get to my actual question, I'm thinking of creating a beam to span the 7.2m which will act as the load bearer for the joists and taking the place of any headers above the door and window because of height issues. It will sit on top of the stud wall top plate, which will effectively be the header timber for the door and window. I've done a few rough load calculations & snow loading etc, and it seems what I'm thinking is easily strong enough, but I wanted to get a more knowledgable eye to just look and give it a gut feel incase I'm totally out in left field.
The beam I thought could be a sandwich, bolted/nailed or both, of three C24 170x47 timbers, probably 4.8m, with staggered joints. To be honest I could almost fit four (188mm) on top of the 170mm to plate if I didn't t think it was overkill. By the way, all of the full height wall studs would be doubled because they fall either at each end or at the openings for the door and window, it's only the cripples under window that would be single.
Thats's my plan, unless anyone yells "STOP", roll on summer
Thanks for your time.
PS. 18mm OSB3 T&G roof with EPDM, 9mm OSB3 sheathing that will be clad
I'd appreciate anyone's thoughts or suggestions or recomendations.
I have a crappy old conservatory that needs something doing. Also it's too hot, so my thinking is to convert it into a garden / sun room. It's currently a lean-to with the left side wall being the garage wall, so the front and the right wall will need replacing.
My thinking is to rip out what's there, and build a simple stud frame, with a big window, some doors and a lantern on the flat roof. Joists would hang off the wall plate at the back onto the beam across the front wall. I'm think of building the whole lot out of C24 170x47. I'd be going for 400mm centres for the roof joists with double joists / trimmers where the lantern is going. Same C24 170x47 for the walls, spacings vary because of doors & windows but nothing exceeding 600mm, most a lot less. The front is 7.2m wide and the side wall is about 3.4m, say 3.6m for the joists. The front wall will have French doors of 1.8m and a window of 3.5m.
So now I get to my actual question, I'm thinking of creating a beam to span the 7.2m which will act as the load bearer for the joists and taking the place of any headers above the door and window because of height issues. It will sit on top of the stud wall top plate, which will effectively be the header timber for the door and window. I've done a few rough load calculations & snow loading etc, and it seems what I'm thinking is easily strong enough, but I wanted to get a more knowledgable eye to just look and give it a gut feel incase I'm totally out in left field.
The beam I thought could be a sandwich, bolted/nailed or both, of three C24 170x47 timbers, probably 4.8m, with staggered joints. To be honest I could almost fit four (188mm) on top of the 170mm to plate if I didn't t think it was overkill. By the way, all of the full height wall studs would be doubled because they fall either at each end or at the openings for the door and window, it's only the cripples under window that would be single.
Thats's my plan, unless anyone yells "STOP", roll on summer
Thanks for your time.
PS. 18mm OSB3 T&G roof with EPDM, 9mm OSB3 sheathing that will be clad