Browse Forums General Discussion 1 Apr 27, 2018 9:34 pm HI, i building Glendale 45 home with Metricon. They charge me $ 19800 for slab upgrade M to H2 and $ 3900 for site cut and fill.My block is pretty flat and almost dead level but they charge me .My soil test report is P class..Pleas give me advise and help me .Thanks Re: $ 19800.00 for H2 SLAB UPGRADE ? 2Apr 28, 2018 9:26 am What stage are you at more info required Tender? Do you have a geotech report? Do you have the engineering drawings/details-> Piles? This has been discussed here Slab and Formwork Costs Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: $ 19800.00 for H2 SLAB UPGRADE ? 3May 16, 2018 10:20 pm If your slab has been called Class P it means there is something that governs the site to be classified as a "Problem" Site. You need to ascertain why its been called Class P, before I can offer support to whether or not this is a reasonable site charge. Generally for reactivity i.e. Class M, H1, H2 or E, each downgrade will cost you around $20-$30 per square metre give or take builders. The Class P, may mean you have 10+ metres of fill to pier through and therefore until you supply more information I cannot comment further. The question you need to ask is "Why is the site classified Class P", then I can give you some further feedback. Re: $ 19800.00 for H2 SLAB UPGRADE ? 4Jul 24, 2018 8:55 pm Hi Geo 1, thanks for your advice ,My block land survey said that it fill around 300 mm and called P site and builder said H2 class slab will be .the will put only 5 piers at the back yard area near the edge beam close to easement. The edge beam around the slab is 450 mm deep from the top surface of the slab.the concrete thickness is 85 mm with 20 mpa grade.I could found any big difference according to their high slab upgrade charges which the put on me. 85 mm /20 mpa concrete is the lowest grade of the concrete which is even the small concrete tradies trying to not use at that thickness 85 mm. they put 90 to 100 mm slab around the house area .but the builder charging a huge amount and deliver the lowest grade and thickness.which should be minimium 120 mm for house slab with 30 mpa grade . this is unfair to the homeowner who do not know about these unfair things . Re: $ 19800.00 for H2 SLAB UPGRADE ? 5Jul 24, 2018 9:12 pm Hi, I cannot comment on the cost or structural elements as I am neither a builder or structural engineer. StructuralBIMGuy, maybe better suited to give you some advise about that, however a passing comment is 30MPa concrete is not something I see often, generally either 25MPa or 32MPa on the AS2870 classifications etc. You may wish to double check. Below is a personal/experience based opinion of which I will not disagree with someone who knows more; Everything you state in terms of piers and edge beam, slab thickness etc sounds reasonable to me for a Class H2 slab. I think the costs maybe associated with "upgrading" the slab form a standard M Class to a H2 Class, of which sounds a little high. However I cannot comment unless we know the floor space area. I roughly know the cost of a M to a H1 slab is around $25-$35 extra per square metre (not including piers etc), cost to the builder so if you go a M to a H2 I would expect $50-$70 extra per square metre. Therefore if you have a 200 square meter house all being even (plus the cost of piers and earthworks and plumbing etc), I would expect at least $10,000-$14,000 extra. I think once you factor in some piers and the extra earthmoving (cut/fill levels change due to slab heights), then the builder may actually be not far off the mark. You can go to another builder who may charge you less, but I don't see it being so much less you are where you feel is a good price, based on your comments. Regards Geo1. Re: $ 19800.00 for H2 SLAB UPGRADE ? 6Jul 25, 2018 8:53 am Geo1 In this example here Single storey comparison Footing Detail M raft, H1 & Waffle the upgrade only adds $4K in materials + Labour + Builders Margin,etc,etc Upgrade engineering site work costs seems to be the biggest issue for new home builders..? Unfortunately without Plans, photos,etc it's difficult to get the below message across Here are my tips 1. Get your own contour, geotech report 2. Do Your own sketch own copyright of the Design & Quants\ 3. 2 Above Get 3 builders quotes 4. If you are buying display product check the Geo & Engineering and make sure it's included in your tender 5. If it's a custom Design then ask "what's specified and detailed and have it broken down in the quote 6. Get professional advice before you hand over a cent 7 Why anyone trusts a (new home) salesman on technical advice beggars belief? Caveat Emptor Goodluck Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: $ 19800.00 for H2 SLAB UPGRADE ? 7Jul 26, 2018 10:38 pm StructuralBIMGuy @Geo1 In this example here Single storey comparison Footing Detail M raft, H1 & Waffle the upgrade only adds $4K in materials + Labour + Builders Margin,etc,etc Upgrade engineering site work costs seems to be the biggest issue for new home builders..? Unfortunately without Plans, photos,etc it's difficult to get the below message across Here are my tips 1. Get your own contour, geotech report 2. Do Your own sketch own copyright of the Design & Quants\ 3. 2 Above Get 3 builders quotes 4. If you are buying display product check the Geo & Engineering and make sure it's included in your tender 5. If it's a custom Design then ask "what's specified and detailed and have it broken down in the quote 6. Get professional advice before you hand over a cent 7 Why anyone trusts a (new home) salesman on technical advice beggars belief? Caveat Emptor Goodluck Absolutely love this example. Many thanks for sharing this. Pure expertise coming up with a simple, easy to follow example. Well done. StructuralBIMGuy, I suggest you get involved with some industry like HEDRA or FFSV. Or maybe you already are. Regards, Geo1. Re: $ 19800.00 for H2 SLAB UPGRADE ? 8Jul 26, 2018 11:34 pm Geo1 Thanks, Happy to share, presenting Data & Analysis is my forte I also put up presentations on This google community AEC BIM Apps & Simulations -> BIM Data & Optimization Soon all 3D BIM Engineering Is to be linked to Google Drive, Sheets & Apps Cheers Chris Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: $ 19800.00 for H2 SLAB UPGRADE ? 9Jul 27, 2018 8:16 am StructuralBIMGuy @Geo1 In this example here Single storey comparison Footing Detail M raft, H1 & Waffle the upgrade only adds $4K in materials + Labour + Builders Margin,etc,etc Upgrade engineering site work costs seems to be the biggest issue for new home builders..? Unfortunately without Plans, photos,etc it's difficult to get the below message across Here are my tips 1. Get your own contour, geotech report 2. Do Your own sketch own copyright of the Design & Quants\ 3. 2 Above Get 3 builders quotes 4. If you are buying display product check the Geo & Engineering and make sure it's included in your tender 5. If it's a custom Design then ask "what's specified and detailed and have it broken down in the quote 6. Get professional advice before you hand over a cent 7 Why anyone trusts a (new home) salesman on technical advice beggars belief? Caveat Emptor Goodluck Good points but would you hazard a guess of the costs of doing the items you suggest against $ $19800? 1. Get your own contour, geotech report 2. Do Your own sketch own copyright of the Design & Quants\ 6. Get professional advice before you hand over a cent Plus taking time off work to do all that Just to verify builder's price is reasonable? 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: $ 19800.00 for H2 SLAB UPGRADE ? 10Jul 28, 2018 11:36 am Agree with BE. We asked people around what they had - we knew the builder was right on a few things - need for piers. Cost for "checking" might be more than anything you'd save. Questions. Is it the house you want ? Is it fairly priced ? Do you like/trust the builders ? If yes to all - may be go for it. Not sure arguing etc etc will save you much. Might actually harm. PS - they must have done a survey/test - can you see it ? I'd also ask any one around you - see what their soils/costs were - not always a good guide but might be helpful. Re: $ 19800.00 for H2 SLAB UPGRADE ? 11Oct 09, 2018 7:36 pm Hi, I have just been given a rating P for slab at our block... im not entirely happy to say the least... its an acre block aprox 80m x 50 - Flat with a few trees down the back... Rating P seems to cover many different things but mine are from trees and wetness of the Soil or something like that... but the damn trees are 40 meters away from where the house would be... then there's some trees in the avenue across the road.... so on that side of the house its 13 meters to our fence - 5 meters nature strip - road then the avenue... so around 30 meters away from where our house would be... like wtf? ... we've got a flat firm site and then find out we are classed P... its like everyone you "employ" to help you out end up stitching you up... so anyways ... they want a H2 slab as follows.. RECOMMENDATIONS:
now can anyone tell me how much a standard slab would cost and also one with the recommendations above... talking with soil tester... he recommends I mention the H2 to the concreters and the advice above... it seems as soon as you mention rating P - they automatically add $10,000 ... kachingggg... im now wondering if I go a wooden floor instead... and how much that would cost? Re: $ 19800.00 for H2 SLAB UPGRADE ? 12Oct 27, 2018 6:50 pm The Mechanic Hi, I have just been given a rating P for slab at our block... im not entirely happy to say the least... its an acre block aprox 80m x 50 - Flat with a few trees down the back... Rating P seems to cover many different things but mine are from trees and wetness of the Soil or something like that... but the damn trees are 40 meters away from where the house would be... then there's some trees in the avenue across the road.... so on that side of the house its 13 meters to our fence - 5 meters nature strip - road then the avenue... so around 30 meters away from where our house would be... like wtf? ... we've got a flat firm site and then find out we are classed P... its like everyone you "employ" to help you out end up stitching you up... so anyways ... they want a H2 slab as follows.. RECOMMENDATIONS:
now can anyone tell me how much a standard slab would cost and also one with the recommendations above... talking with soil tester... he recommends I mention the H2 to the concreters and the advice above... it seems as soon as you mention rating P - they automatically add $10,000 ... kachingggg... im now wondering if I go a wooden floor instead... and how much that would cost? A wooden floor will heavily affect your basix. Thanks for the insights, that makes perfect sense, and yeah, I will be leaning on the experience of the excavator operator entirely. 6 16121 4 6201 The concreter will take and reuse. In my case I bought structural LVLs and scraped them back and used them as joists. 1 5152 |