Browse Forums Building Standards; Getting It Right! 1 Jan 31, 2017 9:31 pm Looking for some assistance please with respect to local Building Codes in south Australia for tolerance limits to slab overhand of the bottom plate of timber frame. Our bottom plate is the standard 90mm width, and in numerous places around the slab the bottom plate is overhanging by at least 25-30mm. I've spoken with our site supervisor, an independent building inspector and also tried to source reliable information online, but to date have not come up with a definitive answer as to what is the acceptable overhang allowed before it would be deemed to be defective. I've been told anything <25mm is ok, someone else told me anything <20mm is ok, and then most interstate online references to their local building codes seem to suggest anything <10mm is acceptable?? Ideally I'd like to refer to the applicable building code here in SA so I know exactly where we stand. Any help is appreciated. Thanks in advance. Re: House frame bottom plate overhang on slab 2Jan 31, 2017 9:40 pm BCA (Building Council of Australia) says 10mm for the frame...and 15mm for brickwork.. See this link for more info http://anewhouse.com.au/2014/02/overhanging-brickwork/ The Harder You Try - the Luckier You Get ! Web site http://www.anewhouse.com.au Informative, Amusing, and Opinionated Blog - Over 600 posts on all aspects of building a new house. Re: House frame bottom plate overhang on slab 4Feb 16, 2017 8:33 pm Rusty11 not building with Rivergum by any chance Nah not Rivergum, but I'm beginning to think they're all as bad as each other! Re: House frame bottom plate overhang on slab 5Feb 19, 2017 11:44 pm Yep. Don't let them get away with it. We had our frame overhanging the slab by 35mm in some spots. And brick overhanging 40mm in spots. We made our builder fix it. This is how they did it (with 'Renderoc cementious repair system' which includes a polymer emulsion bonding agent and curing membrane) ... http://i1292.photobucket.com/albums/b572/MandyBarlow/Avalon/Now%20building/photo_zpsf4f75ae7.png Re: House frame bottom plate overhang on slab 6Jun 19, 2017 3:18 pm bpglendale Looking for some assistance please with respect to local Building Codes in south Australia for tolerance limits to slab overhand of the bottom plate of timber frame. Our bottom plate is the standard 90mm width, and in numerous places around the slab the bottom plate is overhanging by at least 25-30mm. I've spoken with our site supervisor, an independent building inspector and also tried to source reliable information online, but to date have not come up with a definitive answer as to what is the acceptable overhang allowed before it would be deemed to be defective. I've been told anything <25mm is ok, someone else told me anything <20mm is ok, and then most interstate online references to their local building codes seem to suggest anything <10mm is acceptable?? This is a late reply but it may help someone else. The very first thing that you need to do is check your contract to see whether it lists a certified Performance Based Solution that usually allows a 25mm overhang instead of the standard maximum of 10mm for a 110mm wide masonry wall and 90mm timber framed wall. Certified Performance Based Solutions overrule the BCA and are becoming more numerous and prevalent. Performance Based Solutions were formally known as Alternative Solutions. Don't be fooled (as many are) that Performance Based Solutions are superior in any way to the BCA. They are not! This topic should have been posted in the Building Standards sub forum. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: House frame bottom plate overhang on slab 7Dec 12, 2021 8:13 pm Hi, I am in a similar situation. Just checking what is the best solution to this issue? Thanks in advance. Re: House frame bottom plate overhang on slab 8Dec 12, 2021 8:50 pm What is your independent inspector good for if you don't have right answer? Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog In the end, two pieces of treated timber (20mm thick) were bolted onto the joists and planed when there was too much sticking out. Passed inspection. 13 7823 Thanks Ardo, they are sort of semi concealed. I think it is only a few millimetres. I see if they can adjust the hinges. 4 3804 This is 100% true. You can not hang anything on steel frames. very frustrating 8 8040 |