Hi,
I'm building a new house and would like to get a view on my site costs and concrete pier costs that my builder has provided. I've got a feeling that they are excessive but as I'm not a civil engineer and cannot really judge.. The costs are provided below -
4 - 1 Provide 200mm (approx) site cut and 300mm (approx) fill to building area including soil
removal as necessary to achieve a level building platform. Riser pipes to be provided to cut area where required by the Building Surveyor for clients future landscaping. $1,100
The land however looks pretty flat with the naked eye.
4 - 2 Provide rock removal for the excavation of drains due to rock encountered at shallow depths $2,718
as per soil report
4 - 3 Provide 385mm high "E" Class Waffle Raft slab in lieu of standard "M" class, as per soil report and preliminary slab design $9, 131
4 - 4 Provide concrete piers to the Waffle Raft slab as per the soil report and preliminary slab design $14, 060
4 - 5 Provide additional steel reinforcement due to "P" class site, as per soil report and preliminary slab design $3,643
Just wondering what is the cost of the concrete piers and whether it is excessive. I can see on my engineering plan the builder will use 48 400 mm diameter concrete piers 600 mm deep. Not sure, if the total site costs are justifiable. I'm building a 27 sqs house on an empty block of land that looks flat to naked eye but has a soil classification of P.
Any thoughts or suggestions would be appreciated.
Thanks in Advance!