Browse Forums Building A New House Re: P Class soil and fixed site cost 2Nov 28, 2019 2:20 pm Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: P Class soil and fixed site cost 7Nov 28, 2019 3:01 pm dga It's likely the fixed costs were for a H2 slab (based on 2.2) and would have been conditional on it being at least a H2. We had costs covered up to an M class slab (as nearly all volume builders seem to quote on) and ours came back as a H1/P (P because it was a demolition). Because of that we had extra costs on top of what was originally quoted (given the upgraded size of piers, reo and other stuff). There is the potential for screw piers which would add a lot more (as you have experienced). Thanks. Have you been initially quoted the fixed site cost and then had to pay extra due to soil being H1/P? Re: P Class soil and fixed site cost 8Nov 29, 2019 9:20 am Melbournevic Thanks. It's a huge amount but I guess as long as they are charging us correctly I think no issue. You won't know that unless you check the engineering Data and Quantities and it's always best to check it before you hand over a deposit... tell the builder to sharpen his pencil Here's an analysis There is little cost difference in comparison Slab and Formwork Costs Melbournevic One of the most important part of the build is the foundation. That's a given, the problem is withholding the soil/footings engineering until you have paid a deposit at that stage many then feel locked in...and pay up. OT, Society Trusts Engineers , that trust isn't instantly transferable to others on your build IMO, Builders would do better to lift their game Cheers Chris Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs I am not sure whether Perth has its own way of doing things in regards to this. Most of Perth has class A (sandy soil), except for some areas near rivers or hills. 2 8270 We were lucky in that our old house was so small (86 square metres) compared to the new house, they were able to take enough readings around the old backyard house before… 8 24824 PM me your email. I have a build excavation calculator you can use based on your plans to double check what your builder is telling you. Cheers Simeon 1 8012 |