For a double storey house what should the gap be for an internal wall and roof truss?
Does the above have any requirement of gyprocking using a square set?
Thanks
Browse Forums Owner Builder Forum Re: Roof truss and internal walls 4May 02, 2018 7:20 am NSU The gap needs to be at least 15mm. in saying that you need to check that the trusses won't deflect under various wind loading conditions hence reference to checking wall shear blocks, truss bracing, connections, etc Flexible cornice glue helps minimising cracking but only allows for limited movement BTW photos & rough sketches do help others Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Roof truss and internal walls 5May 02, 2018 9:26 am AS1684.4 Section 7.2.21.4 Non load bearing walls (internal walls) must be a min of 10mm below the underside of the bottom chord of the or ceiling battens when used truss See page 19 http://www.pinedesign.com.au/publications/guides_theguide_aus.pdf Best of luck Re: Roof truss and internal walls 7May 02, 2018 9:05 pm The gap between the roof truss and internal walls I have 35mm. Question is that ok for gyprocking square set? A friend has suggested 35x90 on top of the internal wall this will not be touching the frame. Will provide picture tomorrow. Re: Roof truss and internal walls 9May 03, 2018 7:44 am 35mm gap - 25mm or 22mm metal top hat ceiling battens =10mm or 13mm gap respectively Also take photos of bracing and shear connection over the walls hth Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Roof truss and internal walls 13May 06, 2018 8:56 am Hi NSU Thanks for the photos But you did say Internal walls (non Load Bearing walls) They are Load bearing (technically External walls) and are theses the walls of concern..because at a glance they look OK Sorry More photos are Required Please leave a PM if you aren't sure what to check Thanks again Cheers Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Roof truss and internal walls 14May 07, 2018 11:16 am You should never plaster onto trusses always batten out, are you building with a volume builder? Re: Roof truss and internal walls 15May 07, 2018 11:47 pm Thanks for the reply Yes, will attach photo of internal walls The point that I am trying to make with a 35mm gap between the truss and the top of the internal wall. With square set gyprock the ceiling gyprock will be locked to the wall. Re: Roof truss and internal walls 16May 08, 2018 10:08 am The trusses ->Ceiling battens ->Ceiling Gyprock may move/deflect (ever so slightly) vertically not horizontally The cornices interface (flexible cornice glue ) between the Wall & Ceiling also should allow for slight vertical movement/deflection The cornices aren't designed to hold/brace the top of the walls for that there should be shear Connections/Block BTW the above photos look OK for what is visible of the external Load bearing walls..more photos OT If you don't know what to photograph then leave a message.. Seriously it is important you get photos for your own reference benefit Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Roof truss and internal walls 19May 08, 2018 11:42 pm Try ShadowLine ceilings on trusses Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Roof truss and internal walls 20May 21, 2018 8:44 pm StructuralBIMGuy Try ShadowLine ceilings on trusses Gyprock will start next week. The gyprock sheets are 1350 Ground floor height 2750 and upstairs 2740 Will be using two sheets and will be 40 to 50mm short at the bottom. Ground floor sand and cement 35mm. Upstairs timber floor 18mm. Does anyone see a problem with the above? Thanks It's hard to comment as the photos area bit dark ( you might need a new 15 - just got one and wow ) Jokes aside, I can see one member that is cracked. I would find a… 2 2195 Thank you alexp79 and gommeqld for your advice, that's very helpful, thanks 3 7864 |