Browse Forums Landscape & Garden Design 1 Mar 27, 2018 11:35 am Hi all, Wondering if anyone can point me in the right direction. I installed my own soakwells a few months back. Pit in the back, pit in the front, with 90mm stormwater pipe connecting downpipes to the soakwells. My concern is that I have one downpipe that runs to the front soakwells. This downpipe is 'at the start of the line' so is the highest. The soakwells couldn't go any deeper than they are, due to hitting a heap of discarded road mix, so that has meant the first downpipe has to feed into stormwater pipe that is sitting quite high (and gradually slopes toward soakwells over 20m, picking up other downpipes along the way. Because of the height of this stormwater pipe at one end, it will have minimal soil coverage so it's open to traffic damage (feet/wheelbarrows only - but that's enough to crack if there's enough weight). I can't add much more soil above without impacting weepholes on the house. What are my options here? There is only about 1-1.2m between house footings and retaining wall footings, so I didn't want to put a soakwell there. I was considering replacing that high section of pipe (about 10m) with ag pipe in a trench with blue metal, but again worried about this being too close to the footings. The other option is doing away with drainage and just put a spoon drain under the downpipe, but that would concentrate the drainage to one point which would nearly be as bad as a soakwell. So, would a socked ag pipe with a prepared trench - over about 8-10 metres - be sufficient and not cause any soil movement issues? We're only talking about one downpipe, however it is on the weather facing side of the roof. The soil is very sandy (Baldivis, Perth - yellow sand). Alternatively, is there some kind of heavy duty plastic or cement barrier that I could place over the top of the existing 90mm pipe before covering with soil to protect it from traffic? As the stormwater is connected and doing a fine job so far, the easiest option is to leave it where it is, as long as it isn't visible and can be protected somehow. First home builder - Brightwood Estate, Baldivis. Celebration Homes. Follow my build here Re: Stormwater not deep enough - protect/replace? 2Mar 27, 2018 1:03 pm Imightbedave Alternatively, is there some kind of heavy duty plastic or cement barrier that I could place over the top of the existing 90mm pipe before covering with soil to protect it from traffic? As the stormwater is connected and doing a fine job so far, the easiest option is to leave it where it is, as long as it isn't visible and can be protected somehow. Maybe http://www.grasscel.com.au/grass-driveways-solutions/ As per title, unsure if my land doesn’t have enough fill. The house on the left seems to have higher elevation. Not sure if the empty lot in between has just been… 0 572 Most of the time, council will push you out to a private certifier as it ties up their limited resources. Where a builder has gone belly up, the certifier passes the file… 7 5381 ok thanks - yes was wondering if that should have been listed as Option Three! 2 7755 |