James1 Posted February 19, 2019 Share Posted February 19, 2019 Building a timber frame garage with attic trusses above, i have a question about the tying of the gable wall and gable panel to the roof trusses. It states i am to use lateral restraint straps spanning across 3 trusses on the rafters and ceiling joists to the gable panel, is it ok to notch the trusses where the strap passes in order to let the strap sit flush so as to not foul the plasterboard when it gets fitted. Hope this makes sense. Thanks. Link to comment Share on other sites More sharing options...
PeterW Posted February 19, 2019 Share Posted February 19, 2019 Not if they are engineered trusses. Fit them to the inside or upper surfaces and they are then out of the way or chamfer the back of the plasterboard. Link to comment Share on other sites More sharing options...
Onoff Posted February 19, 2019 Share Posted February 19, 2019 Royal patronage for the forum at last! ? 1 Link to comment Share on other sites More sharing options...
Simplysimon Posted February 19, 2019 Share Posted February 19, 2019 or use these https://www.strongtie.co.uk/products/detail/engineered-restraint-strap/334 2 Link to comment Share on other sites More sharing options...
Onoff Posted February 19, 2019 Share Posted February 19, 2019 The straps have to tie onto a full block still I assume? Got a very early Part A here circa late 80's. Link to comment Share on other sites More sharing options...
Russell griffiths Posted February 20, 2019 Share Posted February 20, 2019 I think I’m right in thinking you have hand cut your trusses, so even though you have used the word truss they are not the engineered version direct from a factory. So if you use those Simpson ties that are very thin I would have no problem cutting a 3mm deep notch but if they are from a factory DO NOT cut or notch any part. Link to comment Share on other sites More sharing options...
James1 Posted February 20, 2019 Author Share Posted February 20, 2019 9 hours ago, Onoff said: The straps have to tie onto a full block still I assume? Got a very early Part A here circa late 80's. There is no block work. 145x45 timber frame walls with cladding exterior. Link to comment Share on other sites More sharing options...
James1 Posted February 20, 2019 Author Share Posted February 20, 2019 9 hours ago, PeterW said: Not if they are engineered trusses. Fit them to the inside or upper surfaces and they are then out of the way or chamfer the back of the plasterboard. They are trusses premade from a truss manufacturer. Link to comment Share on other sites More sharing options...
James1 Posted February 20, 2019 Author Share Posted February 20, 2019 9 hours ago, Simplysimon said: or use these https://www.strongtie.co.uk/products/detail/engineered-restraint-strap/334 These are a great shout. 1.6mm thich.? Link to comment Share on other sites More sharing options...
James1 Posted February 20, 2019 Author Share Posted February 20, 2019 Found this statement on a TRA website. Note 1 Notching the bottom Chords of ‘Room in the Roof’ (Attic) Trusses to a maximum depth o 5mm is permitted in order to accommodate gable lateral restraint straps as required b Building Regulations. 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now