Browse Forums Building A New House 1 Sep 18, 2020 7:17 pm Hi, I have read the following SEPP guideline on Rainwater tank slab placement: "(d) not rest on the footings of an existing building for support, and" My RW tank slab is connected to my house slab as below - does this mean it is not compliant? I have asked an engineer and I was told that this could potentially affect the structural integrity of the house when it sinks or rises. Is this something I can go back to the builder? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Thanks Re: Attached Rainwater tank slab 2Sep 19, 2020 12:08 pm I think the requirement you quoted is in the exempt development part of the SEPP. Your house is being built as complying development (or perhaps under a Council DA process) and the slab will have been designed by the structural engineer to accommodate the loads from the rainwater tank. From what I've observed, the RWT slab being integrated with the slab of a new house is typical. Ours is done that way, as are others that I've looked at. In our Council area (Georges River), the entire storm water system (including the RWT) had to also meet separate Council guidelines and be approved by the Council hydraulic engineer. Your Council requirements may differ. If you have concerns and are hesitant to ask the builder then just ask your private certifier (he might be being paid by the builder but he works for you), I've certainly found ours helpful when I've called with questions. Re: Attached Rainwater tank slab 3Sep 20, 2020 9:32 pm John0322 Hi, I have read the following SEPP guideline on Rainwater tank slab placement: "(d) not rest on the footings of an existing building for support, and" My RW tank slab is connected to my house slab as below - does this mean it is not compliant? I have asked an engineer and I was told that this could potentially affect the structural integrity of the house when it sinks or rises. Is this something I can go back to the builder? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Thanks Interesting, Mine was similar. We have the tank supplying every toilet and garden so it's quite big. Slab plan looked like yours. Slab pour comes and section for tank not poured. Was noted at Inspection. It was done later (as in about a month ago). From what I understand, they can't even cold join? Can be adjacent, but must be separate? https://thomasarcherbuild.blogspot.com/p/blog-page.html - Thomas Archer Homes - Custom Nouveau 41 18 90473 DIY, Home Maintenance & Repair But if it is a ground level open pit, then it is not a charged system. No surprises there. The pipes have obviously been altered and there would be a reason for this.… 3 31280 Grate, thank you! RexChan if thats the reason i could sleep well without thinking about additional cost. But 1st i'll need to read about NRV cleaning/replaing stuff. I… 7 31149 |