Hi everyone,
I have a question about a block we are looking to build on. I’ve never built before, and while I’ve done some research I don’t have a construction background.
We have got several really conflicting quotes for the earthworks on our strata block in the Perth hills. It’s a flat 395m2 block in a strata. And they have left us confused about potential earthworks costs and we want to be somewhat sure of our budget.
The geo tech report has come back saying Class A soil with slightly clayey lateritic gravel. It also has rock refusal as several points from between 300mm-600mm across the entire strata.
The recommendation was mesh in the footings as some minor settlement may occur.
One guy said that because of the good class A soil, we would simply need to bring in more soil and compact to put the slab/footings down. We are in mains sewerage and all manholes and services have been installed/connected. He thinks this should make the earthworks costs quite low.
The other guy has said because of the rock it will likely need breaking to put the footings in, which could blow out the budget. This guys thinks an estimate of $15k earthworks is on the low side.
I am a touch confused about who is correct. Is it possible to just bring in extra soil (which will cost a bit I know) compact and that will be enough for the footings if the rock is 600mm down? Or is it likely to cost more because of the rock refusal?
Thank you!