- Joined
- 19 Jan 2021
- Messages
- 10
- Reaction score
- 0
- Country
Hi all
I hope in posting this in the right place I need some advice on sizing timber beams for a flat roof.
I'm building a garden office that will be 8m x 4.5m it will have a flat roof so I'm looking for the correct timber size to span the 4.5m the beams will be at 400 centres.
By what I can find out online it looks like I will need 9" x 2" ? But this will push up the overall height of the building a little to much to stay under the 2.5m maximum so I'm hopeing I can use smaller timbers and maybe double them up so some advice is needed please as I dont want the whole thing sagging next time we get 8" of snow.
I hope in posting this in the right place I need some advice on sizing timber beams for a flat roof.
I'm building a garden office that will be 8m x 4.5m it will have a flat roof so I'm looking for the correct timber size to span the 4.5m the beams will be at 400 centres.
By what I can find out online it looks like I will need 9" x 2" ? But this will push up the overall height of the building a little to much to stay under the 2.5m maximum so I'm hopeing I can use smaller timbers and maybe double them up so some advice is needed please as I dont want the whole thing sagging next time we get 8" of snow.