3 sided hip roof for conservatory

[greasedmonkey]

Hi all,

First post on this forum, though I have been reading and getting answers from it for some time.

I am building a conservatory with timber frame. I plan on using tile effect roofing sheets for this and want to do a 3 sided hip roof. I have calculated lengths and angles and done my research as far as construction goes, but I can not find any recommendations or formulas for working out the sizes of timber I would require.

the conservatory is only 10' x 11' (10' protrusion from the house). The height at the apex is 3' above the top of the conservatory walls and the roof material I hope to use weighs 4.5Kg per metre squared.

If anybody could tell me how to calculate the timber sizes required it would be much appreciated.

Thanks all.

 

[tony1851]

Try 5x2 for the rafters and 7x2 or 8x2 for the hips.

 

[greasedmonkey]

Many thanks.

Its a shame as I was hoping to get away with 4x2 as I have loads of it, but I don't want it falling in, I will be off to wickes then.

Thanks.

 

[tony1851]

Many thanks.

Its a shame as I was hoping to get away with 4x2 as I have loads of it, but I don't want it falling in, I will be off to wickes then.

Thanks.

If you have a lot, you could double it up on each rafter. And you could use singles down the hips, where the lengths are progressively shorter.