Browse Forums Building A New House Re: 140k for footings! Help!! 3Jun 01, 2022 1:55 pm 1) There is no such thing as temporary drainage. I would rather install a permanent one around the perimeter of the house with silt pits in 4 corners. I would strongly consider using something like EZ Drain (https://www.ndspro.com/products/drainag ... drain.html), so you do not spend time on backfilling with gravel etc, can be done in half a day. Soil under your slab should grade towards the drains. 2) I would rather dig and remove 500-600 mm of soil throughout the whole building envelope (+ 1 meter for the drainage perimeter), put in 500 mm of well compacted sand on top of geo textile (for compaction consider renting out an industrial grade vibrating compactor for few hours for this, it can do it all in one go) and then arrange 300 mm thick floating slab without any footings reinforced with 2 layers of SL102 mesh - this way the slab itself will be acting as one big footing (with 570 mm part done in a drop beam manner). Instead of spending time and effort on reo, you just add 12-13kg of HelixSteel per cube of concrete to the concrete mix as well as RadMix (so you do not need to worry about waterproofing). Slabs like that can be installed even on top of swamped soil and can hold well full masonry structures. It takes a day to excavate and remove soil, half a day to install drainage and compact, a day to install pipes, half a day to set up perimeter formwork and half a day to pour - all can be done in a week and should probably cost no more than $70k all in, as you would roughly need 180 cubic meters of sand ($5-6k), 90 cubes of concrete with reinforcement and RadMix agent (~$40k) and then pay for labour, soil removal and machines. Just my 2 cents. Re: 140k for footings! Help!! 5Jun 01, 2022 2:22 pm In fact no, as you would need to remove and replace of soil evenly under both parts of you house, but you can potentially reconsider you house design and make it flat all over, you would need to proper fill and compact this 570 mm, but I afraid you would still need to install retaining walls near your neighbouring properties (so retaining walls wise it will certainly cost you more). If you go with this route you would need to do compaction tests too, but if you use industrial grade compactor it should be no problem and you would easily achieve required compaction score of at least 95. Re: 140k for footings! Help!! 6Jun 01, 2022 4:04 pm Sorry, can't see $140K in what you have put up... Appears you've fallen into the "ol siteworks hole in the ground... now the builder is wanting you to pay up on the extras..." The moral here is for new home builders to get their own design/engineering on difficult sites and then get 3 builders to competitively quote, whereby avoiding any nasty surprises, unfortunately it's too late once you've signed. Goodluck Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: 140k for footings! Help!! 8Jun 01, 2022 4:10 pm Whose design is it Yours or the builders? All you have is a geotech site report You still require the Engineering Drawings/details Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: 140k for footings! Help!! 10Jun 01, 2022 4:47 pm Then take your own design and engineering to other builders to quote and drop that builder... Then you'll see how quick his price comes down Seriously, I have no interest in seeing overpriced engineering Details. Next time you might want to have the engineering explained to you better Slab and formwork costs Unfortunately some designers do a sh!t job at that intentionally.. which gives the builder scope to price gouge Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: 140k for footings! Help!! 11Jun 01, 2022 8:16 pm ![]() We hired a building designer and we own the plans. I have got the engineering drawings I can send you? Can you please post or send the engineering plans? email is simeon@ashingtonhomes.com.au and we will have a look at it Architectural Homes & Duplexes - specialising in custom designing homes to your budget Get a Free Onsite Consultation Today or send a PM for information, questions or advice. Make sure you have the required soil bearing capacity at the shallow founding depth and the strip footings are designed for the expected loads over (including the wind and… 1 770 If this is a custom build then I would expect the builder to set out the door frame closer to the wall to avoid the gap between architrave and the wall and or specify… 9 10159 ![]() This thread is over 6 months old. I'd say the OP has long since decided on their layout. 5 22918 ![]() |