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Browse Forums Building A New House Re: Who else is building with Eden Brae? 15428Dec 19, 2019 5:57 pm just checked the contract. It says the rainwater are connected to the toilet, laundry and the tap the back for garden only . However, I do not hear any voice of the pump when using laundry and the garden tap. Do you guys have the same problem ? Steven Re: Who else is building with Eden Brae? 15429Dec 19, 2019 6:30 pm Can you see a pump? You could have a submersible pump. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Who else is building with Eden Brae? 15430Dec 19, 2019 6:43 pm I dont see any pump in-outside at all, and I just opened the tank, also used the tap water ( where has a rainwater in use sign ) just to see if any flow, noise inside the tank , but nothing !!! EBH trade has made a mistake with my NBN internet cable before, I didnt check until the NBN tech came and said my NBN conduit was under the wall ( EBH brickie has built my garage on top of that conduit ). after 2.5 years of completion , called up EBH and they said their trade had done the job correctly , they only admitted their mistake until I asked them to send their electrician and I will pay for it if it was my landscape mistake . Now I think , I am facing another EBH mistake, just not sure if anyone has got this problem with your home ? Steven Re: Who else is building with Eden Brae? 15431Dec 19, 2019 7:46 pm Steven_La I dont see any pump in-outside at all, and I just opened the tank, also used the tap water ( where has a rainwater in use sign ) just to see if any flow, noise inside the tank , but nothing !!! Is there a 1" pipe coming up through the top of the tank? Are you able to post a photo of the top of the tank? There should also be an outside power point nearby. Can you see it? If so, where does the lead go to? Do you see two pipes going into the wall? 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Who else is building with Eden Brae? 15432Dec 20, 2019 1:24 pm SaveH2O Steven_La I dont see any pump in-outside at all, and I just opened the tank, also used the tap water ( where has a rainwater in use sign ) just to see if any flow, noise inside the tank , but nothing !!! Is there a 1" pipe coming up through the top of the tank? Are you able to post a photo of the top of the tank? There should also be an outside power point nearby. Can you see it? If so, where does the lead go to? Do you see two pipes going into the wall? Hi SaveH20. I have been kept looking for the lead, cause I saw a powerpoint outside, but there is no lead or anything nearby, even the gap at the bottom of the tank and wall. I have posted some photos, what do you think of anything missing here ? Cheers steven Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Re: Who else is building with Eden Brae? 15433Dec 21, 2019 8:48 am Hi Steven, Well, this is incredible! The pipe that you see coming out of the wall is a mains water pipe that is yet to be plumbed to either a manual or automatic mains water switching device. Once plumbed, the pipe will give the visual impression of there being two pipes. Seeing as how they have installed a GPO next to the pipe, it was most probably intended to install an automatic mains water switching device. An automatic mains water switching device is intended to change seamlessly from tank water to mains water when the tank's water level gets low. There is no pump or mains water switching device installed. Is the nearest tank also fitted with a very low ball valve like the furthest tank is? Quite frankly, I am not impressed by the installation, particularly with the pipes extending into the walkway plus some other technical issues. It appears to be a detention system. Do you have a hydraulic plan? 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Who else is building with Eden Brae? 15434Dec 21, 2019 10:02 am SaveH2O Hi Steven, Well, this is incredible! The pipe that you see coming out of the wall is a mains water pipe that is yet to be plumbed to either a manual or automatic mains water switching device. Once plumbed, the pipe will give the visual impression of there being two pipes. Seeing as how they have installed a GPO next to the pipe, it was most probably intended to install an automatic mains water switching device. An automatic mains water switching device is intended to change seamlessly from tank water to mains water when the tank's water level gets low. There is no pump or mains water switching device installed. Is the nearest tank also fitted with a very low ball valve like the furthest tank is? Quite frankly, I am not impressed by the installation, particularly with the pipes extending into the walkway plus some other technical issues. It appears to be a detention system. Do you have a hydraulic plan? Thanks SaveH20 I have pm you some photos. Could you please tell me what needs to be done, since I am kind of a fresher. Cheers Steven Re: Who else is building with Eden Brae? 15435Dec 21, 2019 11:38 am First thing to do is look at the contract but having the tank installed and operational to supply the mandated end fixtures would surely be part of your BASIX conditions and also council's if they are detention tanks as I very, very strongly suspect they are. I am amazed that it passed final inspection. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Who else is building with Eden Brae? 15436Dec 21, 2019 11:56 am Are you able to delete the private information and post the diagrams on the forum so that other might also benefit? 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Who else is building with Eden Brae? 15437Dec 21, 2019 12:07 pm SaveH2O Are you able to delete the private information and post the diagrams on the forum so that other might also benefit? Also, do you know the plan sq m roof area (flat roof area as seen on a plan)? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Not sure if you guys can read them. I have attached the hydraulic plans designed by EBH subbie. There is a line mentioned about the pump but I think they already forgot that. No wonder my house finished in 17 weeks ( no floorcovering and lighting ) . Cheers Steven Re: Who else is building with Eden Brae? 15438Dec 21, 2019 5:41 pm You need to contact the builder and let him know that the water tank installation is unfinished. There are several areas of concern. You should have had the system and its maintenance requirements explained to you at handover. If this was done, the inexplicable absence of the pump and mains water switching device would have been noticed. About the system: You have a 6,000 L detention system that incorporates an additional 3,000 L retention compartment and there are 2 x 5,230 L tanks. What this means is that the tanks retain a combined 3,000 L after it rains. Detention tanks are stipulated in areas where the stormwater system cannot cope with a lot of water all at once during heavy rain. The upper detention compartment serves as onsite mitigation and the water in excess of 3,000 L drains through a small orifice plate that restricts the volume of water draining to stormwater. Should a detention tank fill during heavy prolonged rainfall, water drains through a larger overflow pipe fitted at the top of the tank. The lower pipe next to the green crate is the detention overflow pipe and the hydraulic diagram shows that the orifice plate has a 64mm opening. The higher the water level is above the opening's invert, the faster it will flow. The orifice should be meshed but I can't see any reference to this. The fact is that mesh can *clog in time and you need access for cleaning. The two caps that you see in the photo allow this. As an aside, it is common for hydraulic engineers not to factor the mesh which commonly will have an open area of about 55% when calculating the detention orifice overflow rates but that is another story. There is no mention in the diagram as to flow rates at various heights about the invert but a 64mm detention orifice is quite large. *After rainfall, a fine film of organic and other matter settles on the water surface. This film eventually sinks to the sediment layer after a few days but it also passes through the mesh should it rain again within those few days. It has to be remembered that the water level will drop to the detention outlet orifice invert level. Unless the mesh can be removed for cleaning, only one side of the mesh can be cleaned unless it can also be cleaned by reaching inside the tank or pressure washed. The level of water at the bottom of the detention restricted overflow orifice is the maximum retention water level. You 'might' (???) have the stated 450mm minimum distance to the side boundary but you won't be able to wheel too many things between that distance. With half a brain, they could have optioned the tanks much differently. The diagram also states "An approved switch system similar to "Rainbank". This advice from a hydraulic engineer is very poor. For starters, it doesn't let you know that the Plumbing Code of Australia which is Part 3 of the National Construction Code allows you the choice of choosing between various automatic devices of different designs or much cheaper and bullet proof manual switching devices. Rainbank is expensive and I recommend you doing some Googling to check its reputation. Any mains water switching device has to have WaterMark certification and a hydraulic engineer should not refer to a specific commercial product. Regardless, it looks like they had planned to fit a RainBank style that fits to the top of the tank BUT if so, they forgot to option another top inlet at that end of the tank. With the style mentioned, the pipework would be neater and there would also be a submersible pump. See photo example below. If this is what you have unknowingly paid for, then at least the one shown below is now your neatest alternative for the mains water plumbing already fitted. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Once plumbed, mains water will enter one valve and either rainwater or mains water will exit the other valve and connect to the house mains water pipe. Rainwater is connected via a pipe from a submersible pump. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ A major failing with submersible pump installations is when a submersible pump that is designed to draw water from the bottom of the pump is not positioned above the tank's floor. If you get such a pump, you need to make sure that it is properly positioned so that it doesn't spend its life vacuuming the sediment layer.....like most do! The closest two pipes in the above photo is actually one pipe that serves as the inflow (tallest) and the overflow (lowest). Inside the tank at the top of the vertical riser (inflow pipe) is a removable meshed pipe. The mesh allows water to fall through but retain non soluble debris larger than the mesh apertures. When the tank is (rarely) full, the debris collected will be flushed past the mesh and discharge out through the lower connecting pipe. The round cover that you see needs to be regularly removed to clean debris from the inside of the removable round filter mesh insert before any organic further decays and washes through the filter. The problem with standard wet systems (downpipes diverted underground that then deliver water to a tank via a vertical riser) is that unless the water is filtered at the downpipe, dirt and other contaminants will settle in the underground pipe and any organic matter will provide a nice feast for the bacteria. When bacteria break down organic matter, it depletes the water of oxygen, making the water anaerobic and bacterial die off mixing with accumulated sediment often turns into a tar like gelatinous mass. The wet system pipes are nominal 100mm (actual 104mm ID) which hold 8.5 litres per metre. As a guesstimate, the two tanks appear to harvest nearly the same roof area but this is variable anyway due to the affects of wind driven rain on each side of the roof. Regardless, if the roof plan area is 190 sq m as denoted on the plan, then each wet system would be transferring water from about 95 sq m of roof. You need a good flushing velocity to flush debris before it becomes anaerobic acidic crud which also reconstitutes as a more solid mass but let's say you have a heavy downpour of 1.5 mm/min which is 142.5 litres per minute on 95 sq m of roof, the velocity of the water flowing up the vertical riser is only 0.28 metres per second. Compare this to the required flushing velocity of 0.8 metres per second for a horizontal pipe. EDIT: 1 mm of water on 1 sq m = 1 litre. Also, wet systems hold standing water and mosquitoes can access standing water in a downpipe. Many northern regions of Australia mandate fitting mosquito proof leaf diverters to downpipes to prevent mosquitoes breedig and the spread of mosquito borne diseases which are advancing south due to climate change. The diagram however does state "Leaf gutter guard or downpipe guard recommended". The best place to have leaf diverters is on a downpipe. Well designed wet systems do not allow roof contaminants to enter the underground pipes. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ The diagram also states "First Flush diverter or equivalent at tank as required by L.G.A. These are also missing but just to explain, first flush is the dirty roof wash...contaminated water yet some 'expert' has stipulated that the first flush diverter must be at the tank which is at the end of a wet system pipe supplied by multiple downpipes? A wet system that remains full of water will only fill the first flush diverter with the settled water in the vertical riser...the first flush will still be in the downpipes! Remarkably, the 'expert' has included a failed 'alternative' First Flush Diverter design that is nothing but a waste of money and water. It also has to be remembered that the design installed IS NOT a first flush diverter! 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Who else is building with Eden Brae? 15439Dec 22, 2019 8:00 am Hi Steven, The 6,000 L detention capacity will be a council requirement but they have included a 3,000 L retention compartment. Is the 3,000 L retention capacity a BASIX requirement? If you were only required to satisfy the council detention requirement, then maybe the mains water switching device and the pump were not costed in the installation although the mains water access pipe plumbing would have been done during construction. You need to find out whether the retention capacity was a BASIX requirement and what was costed. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Who else is building with Eden Brae? 15440Dec 22, 2019 11:42 am SaveH2O Hi Steven, The 6,000 L detention capacity will be a council requirement but they have included a 3,000 L retention compartment. Is the 3,000 L retention capacity a BASIX requirement? If you were only required to satisfy the council detention requirement, then maybe the mains water switching device and the pump were not costed in the installation although the mains water access pipe plumbing would have been done during construction. You need to find out whether the retention capacity was a BASIX requirement and what was costed. Thank you very much SaveH20. Your post was point out all the details I need to know . I just also add some variations that EBH sent me ask me to sign. At first, my BASIX was only required a 3000L tank only, but then they told me I need to a detention system ( I got no ideas of what that was for ). I was asking and they said that is the required by council , then I ended up paying almost $10k for that extra system. In my BASIX in the contract, all the pump and main water switching device were included. In the post contract variation, they delete some items and add some new items but did not mention anything about those things, so I thought the only thing change were, I need a bigger tanks, thats all. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ I built with EB back on 2009. Check out this thread on this forum. viewtopic.php?f=31&t=12911&p=154061#p154061 I can't speak for recent expericience however, we had no… 1 22239 A survey must’ve completed by a certified surveyor. This form part of every DA requirement 3 223588 Thanks for your reply. I will just wait and see I guess. Trying to get some more information from our builder. 9 30236 |