Browse Forums General Discussion Re: Structural design questions to raise house 3m 2Apr 26, 2022 7:37 pm Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Structural design questions to raise house 3m 5Apr 27, 2022 9:06 am I am guessimating +$1000/m2 for cast in situ on to formwork, suspended slab, beams, columns, pad footings then you are covered for flood, fire and noise, etc. ( commercial rates) Start with the drawings, engineering, quants, etc then compare alternates. Precast concrete yards are 2-3 times cast onsite Cheers Chris Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Structural design questions to raise house 3m 6Apr 27, 2022 10:53 am Why don't you just build two storey timer home with garage under? You don't need a slab. 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 Re: Structural design questions to raise house 3m 7Apr 27, 2022 2:34 pm StructuralBIMGuy I am guessimating +$1000/m2 for cast in situ ..... So for a 15x25m area = 375m2 that gives a cost of $375,000 and precast gives a cost of $750,000 to $1.125M. Surely I misread something? If not then concrete cast on site or pre cast is certainly not an option. building-expert Why don't you just build two storey timer home with garage under? I'm guessing that's a typo and is a "timber" home. Fair question but I'm looking to avoid coastal flooding on this site so I'm assuming (but I could be wrong of course) that a steel or concrete subfloor structure will be more robust. Sound proofing is also a high priority so again I'm wondering if concrete has an advantage over steel and timber for flooring. Re: Structural design questions to raise house 3m 8Apr 27, 2022 3:37 pm gommeqld StructuralBIMGuy I am guessimating +$1000/m2 for cast in situ ..... So for a 15x25m area = 375m2 that gives a cost of $375,000 and precast gives a cost of $750,000 to $1.125M. Surely I misread something? If not then concrete cast on site or pre cast is certainly not an option. building-expert Why don't you just build two storey timer home with garage under? I'm guessing that's a typo and is a "timber" home. Fair question but I'm looking to avoid coastal flooding on this site so I'm assuming (but I could be wrong of course) that a steel or concrete subfloor structure will be more robust. Sound proofing is also a high priority so again I'm wondering if concrete has an advantage over steel and timber for flooring. What is your problem with soundproofing? Soundproof batts and double glazed windows will do the trick. I am right on the beach and sound of the sea is magical, why would you want to block that? Where is your coastal flooding report? In any case you won’t get a permit to build low enough to be at risk of coastal flooding. 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 Re: Structural design questions to raise house 3m 9Apr 27, 2022 5:24 pm Post and beam foundation in situ, then you can brick up or frame your walls on top of the beams. For flooring install couple of layers of yellow tongue (one over the beams and one under the beams) with insulation in between. Alternatively, Bondek or Speedfloor based suspended slab, but you would still need to insulate under. Re: Structural design questions to raise house 3m 10Apr 30, 2022 10:06 am gommeqld So for a 15x25m area = 375m2 that gives a cost of $375,000 and precast gives a cost of $750,000 to $1.125M. Surely I misread something? If not then concrete cast on site or pre cast is certainly not an option. I'm guessing that's a typo and is a "timber" home. Fair question but I'm looking to avoid coastal flooding on this site so I'm assuming (but I could be wrong of course) that a steel or concrete subfloor structure will be more robust. Sound proofing is also a high priority so again I'm wondering if concrete has an advantage over steel and timber for flooring. You need engineering drawings and quantities Why would you put a timber frame or brick veneer home over a concrete platform structure, it doesn't make sense to me? If its precast you would continue the whole house wall in precast up to the roof. Search the codes and property material for Fire, Durability, various other loading factors or better still hire a local design engineer OT the Architects and bluescope had a design competition after the previous Brisbane flooding's. Nothing become of it , it was just a Marketing stunt, Fake coloured image rendering, and Hot air, etc,etc. nuf said Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs i had the my concreters concrete right up to the fence. I have pits all along my path, so the water tends to drain away from the house and into the pits. There's only one… 7 13373 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 32427 |