Browse Forums Building Standards; Getting It Right! 1 Jul 29, 2012 10:12 pm Hi All, I've got some questions regarding the level of quality expected from the plumber for the stormwater pipe layout. My plumber did all the stormwater pipes along with the sewerage in one hit before the pour, even though only one pipe goes below the slab (garage) and the the rest is around the property. I noticed that one of the main pipes he had set up from a pit infront of the garage to another pit one looked like it was falling in the oposite direction so I decided to dig up a long section to check with a spirit level and sure enough it was falling in the opposite direction. None of the machienery from the concretors went over this area so it is clearly the plumbers mistake. So here is my problem, I started to check the fall of the other storm water pipes and noticed that a section that runs along the side of the house doesn't completly fall in the direction towards the pit, but rather goes up and down. In some sections has the right fall, but in others it falls in the opposite direction, mainly coincides with connections. I checked that water flows thru by pouring a bucket of water in one end and checking that it comes out into the pit in the other and it does, but is this acceptable? I'm not totally happy with the standard of his work and feel that it is just sloppy, for example he set up a plastic tub for one of the pits with holes cut out for the pipes to feed into the pit but because the holes aren't exactly perfect he didn't even bother to put any silicone around the pipe to close the seal off. I personally just feel that it's a bit careless and would like to know what other peoples opinions are and if there are any plumbers on here I would love to hear your feedback. Sorry if it seems like I'm ranting but I'm bothered and after he has fixed up his mistakes I will tell him that he is no longer needed. Re: Storm Water Best Practices? 2Jul 29, 2012 11:09 pm AS/NZS 3500.3 - 7.3.5 Gradients...states that the minimum gradient in Australia for a storm water drain up to and including DN 150 is 1:100, DN 225 is 1:200, DN 300 is 1:250 and DN 375 is 1:300. Your storm water drains do not comply with the regulations. The minimum gradient is to ensure an adequate flushing velocity to prevent debris build up. This type of slack plumbing is rarely noticed. You only have 2 options; talk to the plumber or talk to the PIC. Both options are not good. 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 Best Practices? 3Jul 30, 2012 6:11 am Water flowing isn't a good test. Does a ball run down the pipe by gravity is the better test The Harder You Try - the Luckier You Get ! Web site http://www.anewhouse.com.au Informative, Amusing, and Opinionated Blog - Over 600 posts on all aspects of building a new house. 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 7803 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 6841 Thanks for that, the PVC pipe is still about 40cm below ground level and it sticks out of the sand with no end cap or anything on it just open pipe, is this the finished… 2 9563 |