Browse Forums Building A New House 1 Apr 23, 2021 2:11 pm Hi! I am building a new house in South East suburb in Melb (Clyde North). Geotech report notes P class site due to fill with underlying M soil type. Stamped plans from surveyor who issued the building permit noted 385mm waffle slab (300mm pod 85mm concrete top) to suit soil report. However, now the builder wants me to sign a variation doc to alter the plan to reduce slab height to 310mm overall (225mm pod) as they said engineering plan reflects this reduced height slab. My concern is that the less height it is the weaker the slab is? Would love to get some advice/thoughts from own experience or professional opinion on this matter please! I have fixed house/land package and just concerned that the engineer was trying to be economical for the builder. Re: Advice on waffle pod heights please 3Apr 24, 2021 1:41 pm Thylacene I'd hold them to the deeper pods on class m. Better to be slightly over engineered than to have issues in the future. Concrete is relatively cheap Thanks for the reply! The builder told me 300mm pods are for H slab, not M and that they got it wrong on the plan before that's why they wanted me to sign variation to allow the reduced slab height to occur. But, I did a bit of research and found that 300mm is suitable for M slabs, too. I will try to make them stay with the thicker pods. The Soil classification has little to do with piers. The purpose of the classing of the soil is to identify the clay content and the "average expected range of movement… 2 7881 Building Standards; Getting It Right! We bought a house in 2015 advertised as a 7/2/2, 4br up, 3br down (7br), and to date, it’s a great house. However, we’ve just had it valued and it’s come in as a… 0 10168 Versaloc is a mortarless besser block system that still needs a properly engineered footing. If you just do a 400x200 footing it will fail in time. At 17m long you need it… 1 3190 |