Browse Forums Building A New House 1 Aug 22, 2008 11:28 pm After reading a few posts on here about soil and slab tpyes and how the budget for some people has blown out by 10s of thousands of dollars I am wondering if mine is right.
In the building tender thay have got Excavations and foundations= Provide P class slab including concrete as per soil report $2450 Capped provisional rock removal from earthworks etc is $2480. Provide peiring system to entire foundation due to poorly/loosely comapcted fill(P classification) $1780. Vegetation scrape included. So thats a total of $6710. Not that I am complaining but from what I have read P class is the worst and incurs the extra cost. Is mine too cheap? Am I missing something? I don't want hidden costs later. Does this mean we may have problems later with the house? My last question (I promise ) is when it says Capped rock removal is that the most I will pay? Thanks in advance Danielle Re: soil and slab types 3Aug 23, 2008 6:43 pm Umm No thanks I am not keen for 35k. I know it's cheap but I wanted someone to advise me as to whether I should look out for anything since it is so cheap. I am worried more costs will come later. After you sign the building contract can the slab and excavations go up? Re: soil and slab types 4Aug 23, 2008 6:55 pm thats far too cheap. it will usually cost $75 -80 per sq.m for an H class slab. (inc all materials and labour). Not sure how much bored piers will cost you extra, but for the whole slab my guess would be a minimum of 2 grand on top of the slab. Re: soil and slab types 6Aug 23, 2008 9:41 pm I am building with Bentley Homes. Maybe it is the case where the slab is included in the house price. I thought it was cheap too thats why i was getting a little worried. Is it too good to be true? I am just a little worried they are going to say we need another 10k or something It does say on the building tender that the slab is $2450 so I am not sure it is included in the price of the house. If it is then the extra 6k makes sense. I don't want to go to them and say Hey your too cheap as they will probably charge me more. Should I just leave it and see what the contract says (We have an app in Sep). Once you sign the contract can the prices increase?Sorry we have never built before. Re: soil and slab types 7Aug 23, 2008 10:13 pm Project home builders normally include the cost of a standard slab in their pricing ... and charge extra if the slab needs to be upgraded due to highly reactive soil or problem sites.
Our quote allowed for an extra charge of about $5000 for a P class slab, but eventually their engineers worked out that it wasn't too bad - and we ended up with about half back in the budget. The price shouldn't increase after you have signed the contract. Re: soil and slab types 8Aug 23, 2008 10:21 pm Thankyou Lyn for answering my questions. I guess it makes sense now about the 6k if the slab is included in the price. Glad to here once we sign the contract the price shouldn't go up. OOh hopefully I get some money back like you. I can only hope Re: soil and slab types 9Aug 25, 2008 3:36 pm Soil types are A,S,M,H1,H2,E1,E2,P
P is for a problem site , there can numerous things that determine what the P is actually for , trees,uncontrolled fill, unsually high moisture, subsidence issues etc. the site should still have a clasiffication relevant to the Ys value. Ys is the amount of movent in the soil. A is 0mm S is 0-20mm M is 20-40mm H1 is 40-55mm H2 is 56-70mm E1 is 71-95mm E2 is > 95mm Your builder should really build or price to a specific clasification then deal with the "P" , so it is possible that you may have only an aditional $6000 just to deal with the "P" Builders usuaully have a standard inclusions list , that will include slab or foundations to an "S" in there base pricing. hope this helps , just check your soil test , your site should really be a S/P for that type of cost. Hi Building Expert, Thank you for the feedback, much appreciated, there is also a code of conduct for building surveyors which they need to follow as well. I am looking… 4 1966 Thanks for your reply. I will just wait and see I guess. Trying to get some more information from our builder. 9 11723 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 8262 |