Hi, could someone advise me on the ceiling joists size please, Ive got the plans but can't get hold of the architect at the moment, from wall to wall is 2700mm, it's a single story extension so will just have plasterboard to support, the architect has 150x50 SC4 common rafters, what is SC4 please, and 100x47 ceiling joists, are they the correct size joists please, many thanks.
Ceiling joists
- Thread starter pred
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SC4 are high strength timbers containing very few, if any, knots. These timbers if you have them in your property, will be stamped C24 by the timber yard that supplied them.
Thanks for that foxhole, I'm still waiting for the architect to come back to me,, something else I'm scratching my head about, he's written, 225x50 double trimmed hip rafter, could anyone enlighten me please, I'm guessing he might mean bolting two 225x50 rafters together but I could be wrong....
Are you hoping to do the Carpentry on this extension yourself?
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Curiously, on a roof with a span of 2.7mtrs it seems rather excessive to spec a double hip rafter when the run is only 1.350mtrs.
Not this time chirpychippy, I've got a chippy lined up for it, i haven't asked him yet, he is Polish and I am not sure if he is conversant with the terminology.
Meanwhile my architect hasn't come back to me, I wanted the sizes to order the timber, I've been phoning around, the sawmill I used last time here in Bristol came in £200 cheaper than Selco, I found a place across the bridge which is another £130 cheaper again, £530 so any DIYers well worth a few phone calls, so the distance from
The roof is 3000mm plus the overhang, 2700mm is the internal distance between the walls, the run is at an angle down and to the right so will probably be about 3500mm and only about 20' incline, would this warrant a double hip rafter?
Meanwhile my architect hasn't come back to me, I wanted the sizes to order the timber, I've been phoning around, the sawmill I used last time here in Bristol came in £200 cheaper than Selco, I found a place across the bridge which is another £130 cheaper again, £530 so any DIYers well worth a few phone calls, so the distance from
The roof is 3000mm plus the overhang, 2700mm is the internal distance between the walls, the run is at an angle down and to the right so will probably be about 3500mm and only about 20' incline, would this warrant a double hip rafter?
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