Browse Forums Building A New House 1 May 22, 2014 12:40 pm Hi, I'm building my first home in point cook (featherbrook) with a reputed builder. Recently got a soil test done and the result was Class P with characteristic surface movements greater than 75 mm. I've been through some of the posts on this forum and really not very pleased with the result. My builder has included in his quote the following type of slab before the soil test was done - concrete waffle raft slab - engineer design class M concrete slab with SL 72 fabric reinforcement 310 mm overall height 300 mm wide perimeter beams with 3 #L11 trench mesh. 110 mm wide internal ribs with one no. N12 bar Can someone advise me of the next steps as to - 1. From where and how I can get a filling certificate for this block of land 2. what kind of slab should go on to this land.. 3. Any other things that I need to be mindful off before going ahead with the building? 4. Any questions that I need to ask my builder ?? Thanks in Advance!!! Re: Soil Type - New house in Point cook 2May 22, 2014 12:46 pm 1. the developer as i understand. You rbuilder will organise this. 2. P class slab. 3. your builder will get an engineering report that will take into consideration the soil test. The engineer will design the slab and footings to be best suited for you block. 4. what will teh increase in slab engineering cost? Hope you have a truly fixed site costs contract. the M clas is a standard on most builders inclusions. Mine was adjusted to a H2 for no extra cost as part of my contract. Point cook looks nice, but its a terrble place to build IMO. I took a drive through there a few weeks ago and you can see how poor the ground is just by how wonky most of the street lights have become. Im not familiar with featherbrook, but a lot of pointcook is filled and has P class sites. I dont know what that means for teh area in 30 years time. did you do any research on teh area before buying there? Creator of superduperonium, expert at expert things, nobel laureate, can hold my breath for 10 minutes. Re: Soil Type - New house in Point cook 3May 22, 2014 1:09 pm Hi, Thanks for the quick reply.. I did some research but not to the extent of doing soil test done. There are houses build around my block and I thought that would be good enough indicator to identify any glaring issues.. I'm not sure if my site costs are fixed but the builder had put in an allowance of $13 K in my contract. Will that be sufficient P type soil ? Thanks Re: Soil Type - New house in Point cook 4May 22, 2014 1:39 pm Maybe 13k will be enough. Depends on what your builder uses the 13k for. you need to ask some direct questions about how this sum is likley to be used. What are the possible aditional costs based on other work theyve done in the area. Dont take these figures as gospel, but it will give you an idea of whether you will get slugged another 10 grand in provisional site costs or not. houses being build on either side of your block isnt an indicator of any glaring issues. aditionally you dont need to do soil tests prior to know that point cook is almost all P sites. Jumping on forums like this and asking questions before dropping your hard earned is a good idea (for future builds perhaps). Remember, many people like yourself have bought into a an estate, paid deposits, gotten finance, done months worth of admin crap only to learn that they have a site they would rather not have. By that stage, your finance is approved for that house on that block and youre in a position where you just take it and hope for the best or lose out on time and money spent. That said, plenty of houses built on P sites have been fine. Its just not desirable if you have a choice. Most of the west is H1/2 and up anyway, so its not like youre alone. the key here is the engineers footing design needs to be sound and the builder's concrete crew needs to follow it. Not like that metricon job form a little while back that was completed so poorly that the courts awarded the owner enough cash to knock down and rebuild. Dont freak out, just do some reading, understand the risks and teh process and make sure that if youre not comfortable about somehting, ask questions untill you are. Just be glad your enot on one of the islands at sanctuary lakes lol. Creator of superduperonium, expert at expert things, nobel laureate, can hold my breath for 10 minutes. Re: Soil Type - New house in Point cook 5May 23, 2014 7:16 am The engineer will decide whether the fill is good enough to design a rigid slab (floating)or if the fill is not suitable uncontrolled ,inconsistent then they will look at piers to natural.Point cook is one of the hot spots for slab heave so you must try to do the your best to protect your foundations. You can get some good information from CSIRO or HEDRA about protecting your foundation. Re: Soil Type - New house in Point cook 6May 23, 2014 9:36 am roller 2. what kind of slab should go on to this land.. If the soil test says P, then you should build P class. Even if it ends up costing more than you factored in, I would suggest not skimping on the foundations. As others have stated, Point Cook is known for shall we say suboptimal soil conditions. Natural stone tiles like slate, travertine, and limestone add a timeless, elegant look to… 0 22516 2 1628 Building Standards; Getting It Right! 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