Browse Forums Owner Builder Forum 1 Jun 24, 2017 1:16 pm I'm an owner builder and just poured my slab. Got my invoice from the formworker and the slab has cost me around $280/m2! My block is flat with easy access. Just wondering how much everyone else's slab has cost them? Re: Slab and formwork cost 3Jun 24, 2017 3:34 pm I'm not sure how to work out the m3. I worked out the m2 by $slab divided by floor area. Re: Slab and formwork cost 5Jun 24, 2017 9:35 pm Oh great. Whats the acceptable cost of formwork and raft slab including cost of concrete? My blocks approx 200m2. Re: Slab and formwork cost 6Jun 24, 2017 9:51 pm You're telling us your slab cost $56K? Keep in mind the amount of cement mix in each sq m of slab area is only about $20.
As to your question., read this. Re: Slab and formwork cost 7Jun 25, 2017 3:02 pm The link to that post is from 2009, I don't think its relevant to costs today. Re: Slab and formwork cost 8Jun 25, 2017 3:30 pm iwannahouse The link to that post is from 2009, I don't think its relevant to costs today. It is still a good guide, keep in mind wages growth has been stagnant for a long time and cement is still the same price. ($200 cu m). Reo and mesh likewise. Add 10% if you like. Economic indicators are that housing has slowed right down, expect rates to fall as the recession looms closer. Re: Slab and formwork cost 9Jun 26, 2017 8:54 am iwantanewhouse You need to provide more info ie Slab size. Type of soil ,engineering details, single or double storey,etc,etc...,. what is probably worse than being RIPPED OFF is having a $#!t job that becomes apparent outside of the warranty & Structural periods. If you're an owner builder it's definitely beneficial to pay a bit extra for Architectural,Engineering & Construction (AEC) details/data in a format that you can easily understand & check..then get 3 quotes.Unfortunately it's a bit late for Data & Quant comparisons now If anyone else requires Data comparisons for Slabs & Footing info leave a PM It is far better to make informed decisions before you sign agreements/contracts Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Slab and formwork cost 10May 31, 2018 10:47 pm StructuralBIMGuy @iwantanewhouse You need to provide more info ie Slab size. Type of soil ,engineering details, single or double storey,etc,etc...,. what is probably worse than being RIPPED OFF is having a $#!t job that becomes apparent outside of the warranty & Structural periods. If you're an owner builder it's definitely beneficial to pay a bit extra for Architectural,Engineering & Construction (AEC) details/data in a format that you can easily understand & check..then get 3 quotes.Unfortunately it's a bit late for Data & Quant comparisons now If anyone else requires Data comparisons for Slabs & Footing info leave a PM It is far better to make informed decisions before you sign agreements/contracts Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ We have just decided to go with owner builder and have our plans being drawn up by a draftsman know. There was a soil test about 6years ago complete with the results being P class slab required. Do we need the slab to be engineered, or as owner builders is it recommended regardless? Re: Slab and formwork cost 11May 31, 2018 11:04 pm Isitbuiltyet StructuralBIMGuy @iwantanewhouse You need to provide more info ie Slab size. Type of soil ,engineering details, single or double storey,etc,etc...,. what is probably worse than being RIPPED OFF is having a $#!t job that becomes apparent outside of the warranty & Structural periods. If you're an owner builder it's definitely beneficial to pay a bit extra for Architectural,Engineering & Construction (AEC) details/data in a format that you can easily understand & check..then get 3 quotes.Unfortunately it's a bit late for Data & Quant comparisons now If anyone else requires Data comparisons for Slabs & Footing info leave a PM It is far better to make informed decisions before you sign agreements/contracts Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ We have just decided to go with owner builder and have our plans being drawn up by a draftsman know. There was a soil test about 6years ago complete with the results being P class slab required. Do we need the slab to be engineered, or as owner builders is it recommended regardless? Sorry P class site, not slab Re: Slab and formwork cost 12Jun 01, 2018 8:52 am Isitbuiltyet You only need a 2D->3D sketch..don't waste too much money on a full blown design and approvals at this early stage in case your plans change, if they do then usually you are up for more additional Costs Engineering is very important as is the Material Data,Quantities, Project Planning & construction options 3D BIM Engineering allows you to take control & understand what's involved at all stages of the project Also a Contour Survey (if your block is sloping or difficult) so you can determine Levels & retaining This is Class A Footing & Retaining...BTW it is much easier to upgrade to Class M and to explore options & Costs at this early modelling stage than at Post Contract Stages HTH Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Slab and formwork cost 13Jun 01, 2018 9:27 am StructuralBIMGuy @Isitbuiltyet You only need a 2D->3D sketch..don't waste too much money on a full blown design and approvals at this early stage in case your plans change, if they do then usually you are up for more additional Costs Engineering is very important as is the Material Data,Quantities, Project Planning & construction options 3D BIM Engineering allows you to take control & understand what's involved at all stages of the project Also a Contour Survey (if your block is sloping or difficult) so you can determine Levels & retaining This is Class A Footing & Retaining...BTW it is much easier to upgrade to Class M and to explore options & Costs at this early modelling stage than at Post Contract Stages HTH Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Awesome thank you. Yes, we have a contour survey. So we are thinking apply for DA through council, then once that is approved have an engineer complete the detailed spec, and if council require that, we can submit with our CC application. Does that sounds correct? What costs are we looking at for 3D BIM Engineerig? Re: Slab and formwork cost 14Jun 01, 2018 10:12 am isitbuiltyet You are welcome. On simple builds DA only requires Site Plan, Floor Plan & Elevations 50% of Architects, designers & Builders use 3D Architectural BIM Software mainly for Renderings & Presentations a fraction of those use Structural BIM, The cost will depend on what software your designer users and file translations type? Structural BIM is also used during the construction & inspection Stages.... Rendering & Presentation BIM is not Please start your own thread e.g. Second Storey Addition This thread is for Footings, Slab & Formwork Costs which is a major issue for New homeowners & OBs Cheers Chris Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Slab and formwork cost 15Jun 01, 2018 7:31 pm StructuralBIMGuy @isitbuiltyet You are welcome. On simple builds DA only requires Site Plan, Floor Plan & Elevations 50% of Architects, designers & Builders use 3D Architectural BIM Software mainly for Renderings & Presentations a fraction of those use Structural BIM, The cost will depend on what software your designer users and file translations type? Structural BIM is also used during the construction & inspection Stages.... Rendering & Presentation BIM is not Please start your own thread e.g. Second Storey Addition This thread is for Footings, Slab & Formwork Costs which is a major issue for New homeowners & OBs Cheers Chris Thanks for your reply. Yes, will do Re: Slab and formwork cost 16Jul 28, 2018 9:03 am Clarity Estimating Normally a waffle pod slab should be roughly 110-130/m2. hence, you should've only paid roughly 25k for it, even if its a full upgraded 32mpa, h2 class slab with approx 1m piering. @"Clarity Estimating", What about cost of (standard) 100 mm SL82 M-class raffle slab those days (in Sydney)? Will be helpful if can you break down total cost into labour, formwork, cement. Also, could be helpful if you could provide cost breakdown for the following jobs: 1) strip footings - steel fixing labour, concrete pour, vibration labour 2) escavation - cut and fill per hour 3) Dincel installation - labour, cost of Dincel material 4) concrete staircases - formwork and steel fixing cost (per sqm?), concrete pour and finish Thanks in advance Re: Slab and formwork cost 19Jul 28, 2018 9:31 am alexp79 StructuralBIMGuy @alexp79 I suggest you put up a BIM Model (as per my eg, above) keep the format simple, set up a G+ account, ie G+ data hth Hi Chris, will email you my engineering You can better control your build on Google Communities and add members (Suppliers,Trades,etc) + processes + Data + Proofs + Automation ,etc,etc...cheers Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Slab and formwork cost 20Jul 31, 2018 2:09 am Thanks, Clarity Estimating. SL82 pricing seems to be off chart, it can be bought for around $6.5 per sqm in retail from what I see here: https://buybuildingsupplies.com.au/sl82 ... -2068.html For raft slab I don't need pods? The concreter will take and reuse. In my case I bought structural LVLs and scraped them back and used them as joists. 1 5160 Firstly the ableflex that has been installed needs (manufactures specification) a sealant cap over the top, preventing water draining down between the slab and the… 3 7791 custom probably not. Volume, most defiantly, but spec would vary. If youre doing a knock down, there additional costs associated with that that will eat into your budget… 1 10281 |