Browse Forums Building Standards; Getting It Right! Re: Storm-water pipe grading and surface-drain location issu 2Jul 29, 2019 8:24 pm 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: Storm-water pipe grading and surface-drain location issu 4Jul 29, 2019 11:33 pm It would cost nearly $300 to put a cctv camera down the stormwater pipes to get a video as proof of pooling. You could just use a phone video to show the water and then show putting a dry stick in and out to show the depth of water inside. You don't need anything fancy. 70mm of standing water is bad workmanship and it is not compliant. Ask the surveyor if he was given a Certificate Of Compliance. Inadequate slope compromises the pipe's drainage capacity. Drains are often put in paths, 300mm from the slab is close but I am not aware of any regs prohibiting it. The regs require a slope away from the house but drainage is also very important, it is best not to let water flow off the path and pool next to the path. The current BCA and AS regs re surface drainage away from the house are inadequate in part in that they don't place importance on drainage, only slope. Do the plans detail the stormwater pipes? 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: Storm-water pipe grading and surface-drain location issu 5Jul 30, 2019 5:48 pm SaveH2O It would cost nearly $300 to put a cctv camera down the stormwater pipes to get a video as proof of pooling. You could just use a phone video to show the water and then show putting a dry stick in and out to show the depth of water inside. You don't need anything fancy. 70mm of standing water is bad workmanship and it is not compliant. Ask the surveyor if he was given a Certificate Of Compliance. Inadequate slope compromises the pipe's drainage capacity. Drains are often put in paths, 300mm from the slab is close but I am not aware of any regs prohibiting it. The regs require a slope away from the house but drainage is also very important, it is best not to let water flow off the path and pool next to the path. The current BCA and AS regs re surface drainage away from the house are inadequate in part in that they don't place importance on drainage, only slope. Do the plans detail the stormwater pipes? Thank you for your insight. I spoke with builder and Pipeworx today. Pipeworx will be visiting the site for inspection on Thursday. For grading - they said No to me in phone and then Yes in front of builder - need to see how it goes on Thursday. For surface-drain location in backyard, builder also said the same as you that they no need to provide it. And, they suggested to install multiple agg-pipes and connect it to the bottom of surface drain-pipe. I need to understand the feasibility and depends on it, - either do agg-lines and connect it to existing surface-drain - or hire someone to add an elbow /t-joint to move that surface drain away from the slab and grade the soil towards the drain(like 1 meter away). Re: Storm-water pipe grading and surface-drain location issu 6Jul 30, 2019 6:31 pm Don't take any nonsense from the plumbers....they have done non compliant work and treated you like a mushroom by keeping you in the dark and feeding you bs. With plumbing, it is out of sight, out of mind. It is however possible that the standing water is the result of an obstruction but a depth of 70 mm makes this unlikely. Regardless, I always recommend that new home owners have an independent cctv camera inspection of all stormwater and drain pipes pre handover. The site should be sloped away from the slab during construction and at handover. The site must have good drainage. What are your landscaping plans next to the house? What you do depends on the answer to this question. Are you going to have an impermeable perimeter path? If so, it is best practice to direct the water to a drain without it flowing off the path. There are a few ways to do this which a good concretor will know. If you don't have an impermeable surface, you may well need ag drains. Do you know the soil classification? 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. 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 8512 Hello I am developing 2 side by side units. Wish someone can help me on the following questions 1) Which stage should be the storm water pipe installed during the new… 0 7821 If you need to be able to access these then you may need to dig them out and cut them so you can add a socket and a riser to the required height. We normally add a… 1 6849 |