Browse Forums Building A New House Re: Pier depth for cut and fill site 3Dec 30, 2018 7:52 am Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Pier depth for cut and fill site 5Dec 30, 2018 9:40 am Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Pier depth for cut and fill site 8Jan 02, 2019 3:41 pm Ah, just noticed it is actually a waffle pod. Well, waffle pods are not recommended for highly reactive clay sites at all, you won't be able to achieve a good drainage on such sites (I personally wouldn't be recommending them even for moderately reactive clay sites too). Especially, when there is cut and fill too. In my opinion, this design is just asking for trouble. Re: Pier depth for cut and fill site 9Jan 02, 2019 5:25 pm Drainage can be achieved, you just need it sorted from day 1 until you take possession. Lots of yard drains, spoon drains etc and you should be apples. The builder and engineer will sort that out for you. Re: Pier depth for cut and fill site 10Jan 03, 2019 12:46 am sweetswisssteel Drainage can be achieved, you just need it sorted from day 1 until you take possession. Lots of yard drains, spoon drains etc and you should be apples. The builder and engineer will sort that out for you. I wouldn't risk as builders generally have no idea of what good drainage on clay means. Especially I would never go for waffles in cut and fill scenarios on reactive clay soils. Cornell Engineers strongly believe that waffle pads are "red light" for H1/H2s. https://www.cornellengineers.com.au/bew ... fle-slabs/ But considering that average Australian house has life expectancy of 25 years, this will probably work, anyway. Just my 2 cents. I should have followed up on this thread. So, the pier foundation wasn't large enough on the side it was leaning towards, and the NBN cable went through the pier, just… 8 12114 Just be careful with building stability during construction, that is when the structure may be weakened, refer to your engineering drawings for stability methodology. 1 7215 |