199 reputation
7
bio website about.me/adam.houldsworth
location Manchester, United Kingdom
age 28
visits member for 3 years, 9 months
seen Dec 23 '13 at 14:03

programmer :: gamer :: father

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Jun
10
comment How can I damp proof this wall?
+1 Indeed this is exactly what is required. Just had the plasterer round and he has a cement render that acts as a vapour barrier.
Jun
7
comment Should I hire a structural engineer or an architect?
+1 Thanks for the reply. I'm guessing the job role doesn't differ too much across the pond. I'll be ringing local firms tomorrow.
Oct
31
comment How do I fit a joist in this small space?
I've decided to take this approach in conjunction with sistering a small section of joist in parallel with the main beam in order to get more material on the brickwork - all bolted together.
Oct
27
comment How do I fit a joist in this small space?
That's not a bad idea, I need to confirm the dimensions of my rafters and get back to you. With the minimum distance you've specified, I don't know how many bolts I can get in. I'm fairly certain that if I place the bolt in the centre of the rafter it will be with 2" from both edges already :-(
Oct
27
comment How do I fit a joist in this small space?
@DA01 Yeah I was thinking about fabrication, in that case as you say I'd need someone to run the numbers for me.
Aug
9
comment Floor joists connection to eaves
thanks for collating the comments into an answer. It, like many jobs around the house, is currently on the backburner while I make progress on other things.
Jul
26
comment Floor joists connection to eaves
@Mike indeed that is hopefully what I'm gunning for. I will be connecting the joists to the rafters, as you say - is bolting them with some washer plates is the way to go there?
Jul
26
comment Floor joists connection to eaves
@Mike thanks, I'll be able to figure out how much material needs removing soon (hopefully tonight if I can get girlfriend approval for the mess I need to make) If not much is removed, I won't concern myself further with it. If I end up needing to chop a lot off, I'll be back here with another question :-)
Jul
26
comment Floor joists connection to eaves
@Mike Perry I've decided to go for raising the joists (now to the height you specify) and connect the outer end to the rafter via a bolt (as advised by my local building control). I'm still undecided about connecting them. The existing joists are fine for the ceiling, and the new joists are fine for the floor - I see no reason to connect them as they won't help each other.
Jul
26
comment Floor joists connection to eaves
Thanks for the info. The timber beams are definitely joists, not trusses. The existing roof frame and ceiling are being left untouched, the new joists will sit along the same brickwork. As for the stress on the ceiling plaster work, I was going to raise the joists to sit a handful of inches higher - there will effectively be an air gap. With the loading calculations, I have local authorities helping me determine what size joist I need. My main question was simply about the shearing stress changes of having to trim the joist to fit.
Jul
26
comment Floor joists connection to eaves
@Mike Perry I was trying to avoid attaching the new joists to the rafters at all. The existing roof structure is not being touched.
Jul
26
comment Floor joists connection to eaves
@Mike Perry Not yet, but I'm not making it a habitable room, so it only needs to pass inspection. Either way, I'm in contact with building control in my council, so they will advise me where needed.
Jul
25
comment Floor joists connection to eaves
The plaster work is brand new - I did it recently. 12mm board with plasterboard screws.
Jul
25
comment Floor joists connection to eaves
Ah ok. I can't rely on the existing ceiling joists as they are old, thin, and already supporting the ceiling plasterwork. What I'm going to do now is expose my eaves and see exactly how much space I've got, then draw a profile plan of the joist sat on the brick in relation to the existing woodwork.
Jul
25
comment Floor joists connection to eaves
Not sure I follow. By shearing stress I mean the forces acting downwards. The wood supported by brick is fine, but the wood hanging over the edge will try to shear away from the wood on the brick - all from the downward pressure from the floor contents. If I take a triangle out of the end of the joist, I alter the thickness of the part of the joist resisting the shearing. Not sure if I'm worrying about nothing :-)
Jul
25
comment Floor joists connection to eaves
Hi, yes that it was I think needs to occur, however does that then alter the strength of the joist against shearing on the brick face?