Browse Forums Building A New House 1 Jan 23, 2019 3:41 pm Hi All, I live in Perth in the Hills and am building a new house on a subdivision. The shire want all storm water retained on site however it is clay with 800mm of fill and won't take soakwells, hasn't got a shire drainage I can plum into and the block is sloping away from the road. I've been told I need a civil engineer to design a system to put to the shire for approval. Has anyone had this scenario. Thanks in advance. Re: M class soil/clay and drainage 2Jan 23, 2019 8:11 pm I know of people who bought a block on the low side of the road and when their housing plans were lodged for approval, the council planners directed all stormwater run off had to go into a retention tank and then get pumped back up to the road. It cost this young couple approx $14k to get this done. Re: M class soil/clay and drainage 5Jan 25, 2019 10:15 pm Hi Kevin 1, if your using a builder they would (or maybe I say SHOULD) price the stormwater engineering as part of the scope of works, don't go to a civil engineer, someone like Structerre or Enginuity Engineering can do that for you, and won't cost a huge amount. Re: M class soil/clay and drainage 6Jan 25, 2019 10:51 pm Thanks for the references Doozer, I'll get in touch with them. I'm trying to save on site works and am still getting quotes through a building broker at the moment, however it was prompt engineering who did the soil testing and reckoned a civil eng needs to look at it. Rather than it be over engineered I'll try your suggestions. Thanks 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 13103 I've dug some footings to embed a post anchor into. My holes are around 450mm deep which I'll put a 200mm stirrup into. The bottom of these holes seem firm enough. … 0 3322 I donβt think so as the floor area over 300 square meters then it is class 3β¦. 12 17938 |