Browse Forums Landscape & Garden Design Re: Ideas to drain water away from house 8Jul 01, 2010 11:48 am Thanks for your replies gents. The area that I am having drainage problems with will eventually be a second driveway and trailer storage area and will most likely be covered in around 100mm of crushed rock so there is no real landscape plan needed. I do however, need to get rid of the water. What I think I will do (and please let me know if this is a bad idea) is dig a french drain trench from the front side of the gate, underneath the gate and ending in a small pit. At the bottom of this pit I will have a poly pipe which will incline down and connect into a Tee connector in the storm water pipe. The french drain will contain all the usual permeable materials such as a base of sand and a fill of gravel. I will have the pipe angled away from the house so that the pit will be closer to the fence than the house. I will then build up the clay on the house side and slope down towards the pit. How does this all sound? Re: Ideas to drain water away from house 10Jul 02, 2010 11:15 am Ah righto, now see what you mean. I would grade the area on a 1.5-2 % fall away from the house, to push the water away toward the fence. Against your house though you dont want dirt higher than say 150mm below the damp course, maybe a bit higher if gravel, so may involve cutting rather than filling against house. Then can gravel the area, I would probably leave the clay underneath the gravel as a hard surface to create the runoff. At the low side of the slope install either a french drain or I would use an ag pipe in a gravel envelope, all covered with geofabric and then backfilled over with sand and then maybe weedmat then continue your pebbles. Run the ag pipe into your stormwater drainpipe. If the pipe is overloaded the water should just sit in the drain until the drainage catches up. Depends on how your levels work out as to what you can do ie level of the drainpipe vs ground levels. In the short term just continue that trench you have dug underneath the timber kerbing to let the water out to the road. cover with mesh if dogs are a problem. Does that make sense ? Re: Ideas to drain water away from house 12Jul 03, 2010 5:53 pm Hey fellas, Got out there and installed a tee connector into my storm water pipe and then connected another piece of pipe on a slight slope. I have then put a tank strainer on the end of the pipe which is sitting in a square pit. Everything looks fine but something really weird is happening. I have filled the pit full of water expecting the water to flow through the pipe and into the storm water pipe however the water is just sitting stagnant in the bottom of the pit. I have checked the angle of the pipe and everything looks to be fine. I have no idea why the water won't flow.... Any ideas? Re: Ideas to drain water away from house 13Jul 03, 2010 10:16 pm Ok so I'm thinking I have an air lock present somewhere in the pipe. As far as I know, I have two options. 1) Install some sort of valve or air release and hope that will start the water flow. 2) Remove the horizontal section of pipe and point the tee connector directly upwards and position the pit above. With the pipe being completely vertical, I'm confident that the water should have enough gravitational pull to make it's way down the pipe. Hoping someone can let me know before tomorrow what their thoughts are on what method to use. Cheers... Re: Ideas to drain water away from house 15Jul 05, 2010 5:43 pm keen Do you still have access to where you T ed in ? Pull off the connection and see if the main pipe is blocked - stick your hose in it. Did you use 90mm for your plumbing ? I do... I ended up cutting the horizontal pipe and lifting it so it points directly up and down. Water seems to drain fluently now. Yes, I used 90mm. Re: Ideas to drain water away from house 17Jul 11, 2010 1:38 am Kio I've got a similar problem as well, do you mind to post some "after" pics? No worries... I'll take some later today. Only thing is, is that I've covered up the tee with dirt so all you'll see is the drain. I can go through exactly what I did though and what I still need to do to finish off the job. Re: Ideas to drain water away from house 18Jul 14, 2010 10:43 pm Hi You will probably find that the stormwater pipe that is installed around your house has no fall. This is a common problem when 90mm stormwater pipe is installed by some plumbers. The 90mm stormwater pipe is prone to being squashed after installation and sometimes can be completely flat especially in clay areas. The only way to test to see if it is not completely flat is place a hose down the pipe and see how fast the water comes out at the kerb. Regards Shane 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 8450 I've got a challenge here. Background is the builder has cut too deep for the slab and the slab is now below the very substantial retaining wall. It's failed occupancy… 0 18372 Yeah mine about 9 metres long and 8 wide with slope of 25% at one point but the end point of the outlet is past the side of garage and if he concretes allowing for… 4 4516 |