Browse Forums General Discussion 1 Oct 18, 2009 7:18 am Re: Stormwater and retention issues 12Oct 19, 2009 9:41 pm Hi themax, that was so kind of you to PM all that detail. When you were first presented with that long list, I can imagine you uttered an expletive or 2! I'm sure this KDR process is ageing me - definitely a few more wrinkles around the eyes and forehead already and I haven't even got to council stage yet! Of all the clubs I thought I might belong to, I never guessed it would be a "$18,000 hole in the ground" club! This joining fee will take some beating. Greg - not sure if I've correctly understood but I'm assuming that by underground tanks, you mean your rainwater tanks. Why can't you have the rainwater tanks above ground & down the side of your house? Re: Stormwater and retention issues 13Oct 19, 2009 10:09 pm My rainwater tanks and stormwater detention tanks are one and the same; they are the ones I meant. I cannot have them on the right side of the house because there is not enough room. I can't have them on the left side of the house because they would be in the overland flow path again. I cannot move the house to the left to make roon for them on the right because I would lose more house space due to the diagonal stormwater easement on the left side. Catch 22+22+22:):) My system is two tanks. They are connected together and hold water for stored use to a certain depth. All water storage above that depth is stormwater detention which is released into the stormwater easement slowly. The only thing connected to this system is the roof and two pits. It is a charged system, as the tanks are higher than the lowest point in the system. Greg Re: Stormwater and retention issues 14Oct 20, 2009 4:59 am Nothing like a quick lesson in engineering early in the morning. Thanks for your post gpierce. That has raised yet another issue for us because we are also subject to overland flow so that might affect us as well with respect to where our tank(s) can go. DB - I know what you mean about the ageing thing! Oh another thought. If any of us have any money left maybe we could get a club t-shirt! ML Re: Stormwater and retention issues 15Oct 20, 2009 8:10 am Remember rainwater tanks are different to storm water detention tank. Detention tank costs a lot! I had to have rainwater tanks, 10 cum storm water detention tank, absorption tranches and all other associated stuff! Including all the engineering costs, it came to almost 35K. This is the least quote I got out of at least five! We built this last month. Contact me if you need any info. Re: Stormwater and retention issues 18Oct 20, 2009 12:15 pm $35-$40k I think I'm going to need more than wrinkle cream by the end of this rebuild process ..... perhaps a straight jacket to go over that club t-shirt! Re: Stormwater and retention issues 19Oct 20, 2009 7:05 pm Devank, if ML us in an overland flow area in Sydney then ML can be pretty much guaranteed to have to have stormwater detention. How it is accomplished and the cost for it depends on the specific site and its needs. Whether there needs to be rainwater tanks is determined by BASIX pretty much. Greg Re: Stormwater and retention issues 20Oct 22, 2009 2:06 pm I dont think I have truly appreciated the flatness of my block... nor the absolute lack of any building complications whatsoever... until I read this thread. CRIKEY... 18k for a hole in the ground. pretty sure id just live in a tent if that was the other option lol You just need the gutter and downpipe sizes to be compliant with the NCC for the roof area harvested and have the downpipes connected to a LPOD. You need to ask your… 1 10383 Grab a hose, insert it at the top of the inlet/down pipe and turn the water on and see where the water is escaping from. Then you'll know. 3 9000 Can you post your Architectural and Hydraulic plans so we can see how the system as a whole works? Without that no one will be able to give you any meaningful… 2 1028 |