Browse Forums Renovation + Home Improvement 1 Aug 10, 2014 10:30 am Good morning all, I'd like some info on bearers and joist. That white bearer on the existing building is a 190mm steel C-section with 35mm timber on top (to attach decking). The brickwork and piers are level with building brickwork. So I have to make up 225mm to get to level before putting down decking (and flooring where the studio will be). An enclosed room will be build on the end where the garbage bins are to the first verandah post and out to the brickwork on the footing (2.4m extension). Roof will extend all the way 2.4M. Bearers, of course, will run parallel with house. The brick wall is on a solid 400mm x 400mm footing with reo. The piers are on 500mm deep pads and vary from 1.5M to around 1.7M apart. As well as sitting bearers on the piers next to the house I'll also bolt the ledger to the C-section steel. Needless to say, existing stairs will be removed. Now for the question: I've been told that 140 x 45 pine would be ok but I'd like to go bigger than that. I'm ok with the joist being 90 x 45. That gives me 230mm, which is 5mm over the correct height (so I'll probably have to plane the bearers down 5mm). I can go to 140 x 70mm pine, which is about triple the price. Whadyathink? Cheers OTL Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Re: Bearers and joist for decking extension and studio room 2Aug 14, 2014 6:53 am My draftsman kept repeating the phrase- You can always overbuild So going larger beam and section sizes is a good thing if money/ budget permits Design from top down to ground , build from ground up Seconded; we just used these last weekend to build a small deck. They worked perfectly as we have bluestone in the area where we wanted to build so digging down was not… 8 7696 Hi, as per the subject. Does anyone have any recommendations for the best value decking oil (Bunning is close to where I live) for a treated pine deck? Thanks 0 1290 Assuming you've modelled the TB8, TB10, TB12, TB2 & J1 joists/LVLs there, it appears as per drawing to me. There maybe should be an additional J1 between TB10 and T12 if… 3 27609 |