I am creating a small cut roof, all 4 sides slope at 35 pitch to a short ridge board (rather than to an apex)
on 3 side rafters will be birdsmouth cut to rest on a 150 x 50mm ring beam .
At the front I want to fly the rafter ends out ... i.e extend roof ... same 35 degree pitch but extend out by around 300mm .... as if I were extending a soffit (but no soffits in this case.
i.e like this side ways view
http://tinyurl.com/mbd5742
Assume I would create a horizontal extension, and vertical upstand (x & y)
I would run a tie brace 'z' from one side to the other
Are there any guidelines for ratio of length x ... was thinking of having 300mm extension i.e to left of ring beam, and using a 1/3 2/3 have 2/3 to the right of the beam, then joining the vertical ..... does 1/3 to 2/3 seem right, or is there a recommended ratio.
Roof is to be plain tile clad.
on 3 side rafters will be birdsmouth cut to rest on a 150 x 50mm ring beam .
At the front I want to fly the rafter ends out ... i.e extend roof ... same 35 degree pitch but extend out by around 300mm .... as if I were extending a soffit (but no soffits in this case.
i.e like this side ways view
http://tinyurl.com/mbd5742
Assume I would create a horizontal extension, and vertical upstand (x & y)
I would run a tie brace 'z' from one side to the other
Are there any guidelines for ratio of length x ... was thinking of having 300mm extension i.e to left of ring beam, and using a 1/3 2/3 have 2/3 to the right of the beam, then joining the vertical ..... does 1/3 to 2/3 seem right, or is there a recommended ratio.
Roof is to be plain tile clad.
