Browse Forums Building A New House 1 Nov 13, 2017 10:45 am Hi our soil test classification is P-due to moisture content, building company is saying they will provide a waffle pod slab. We are building in Ocean Grove. Can any one advise if this is a good slab or if there is a better one we should be using Re: P class soil-high moisture content 2Nov 13, 2017 2:28 pm I think it depends who you talk to and someone else will probably have some more specific advice but I have heard that traditional slab are more better and more stable than the waffle pods. Good luck Building our first custom dream home. https://r.tapatalk.com/shareLink?share_ ... are_type=t Re: P class soil-high moisture content 3Nov 13, 2017 3:44 pm Post your soil report. The way I understand it is that these days, some of these "waffle pod" slabs are really suspended slabs which can withstand very bad soil. The "waffle pod" of the old is truly rubbish. Also P class could mean anything. It also means your builder will need to engage engineering firm to custom design the slab. Does the report say what the underlying soil condition is? Sometimes that is a rating given along side P rating. Re: P class soil-high moisture content 4Nov 13, 2017 4:52 pm The two main types of slab used are waffle and raft.I have seen both fail in highly reactive soils but the waffle may not be able to cope as well with extreme soil movement. The waffles also allow water ingress under the slab more easily than a raft slab. Some builders refuse to build raft slabs so some engineers have now designed a hybrid waffle with deepened edge beams. Does your soil report say how reactive the site is ? Even though it is a "p" site there should be a mention of why and how reactive the underlying soil is. 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 8274 these look like missing batts. Go up and take a look. But yeah moisure meter is a completely different tool 4 8402 |