Browse Forums Building A New House Re: Sierra Estate - Soil Class 2May 15, 2009 10:37 pm Blog: http://bluemistkids.blogspot.com "Never be afraid to try something new. Remember, amateurs built the ark, and professionals built the Titanic." 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 12983 I don’t think so as the floor area over 300 square meters then it is class 3…. 12 17886 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 9816 |