Browse Forums Building A New House 1 Apr 16, 2015 5:36 pm Ok panic stations reached here and wondering if anyone else has had something like this on their block. https://vimeo.com/125123184 Apparently our ss thinks it might be a natural watercourse. He is getting the construction manager out tomorrow to have a look and then the engineer too. He said that it might mean extra piering and that the concrete is poured as the piers are dug. We have a French drain already around the outside of the building pad going to the back of the block. Could this be because we had the block cleared in December and with all the trees gone the water just hasn't found another outlet yet? Do you think we will need a French drain or drain of some sort under the house? I am confused though as 2 soil surveys were done and both said no subsurface water was present? Does this just mean they happened to test around this spot unfortunately? viewtopic.php?t=76386 Re: Subsurface water 2Apr 16, 2015 5:53 pm Ok don't have any useful advice. But I really feel for you I would be panicking too. Be careful jumping I was worried you could be on top of a sink hole.... Re: Subsurface water 3Apr 16, 2015 5:56 pm It runs in a line my hubby was saying. It was like a dirt trampoline. Jumped at one end and it moved to the other. Hopefully we will have more answers tomorrow if no one on here has any idea. viewtopic.php?t=76386 Re: Subsurface water 4Apr 16, 2015 6:32 pm Shanniidc Ok panic stations reached here and wondering if anyone else has had something like this on their block. https://vimeo.com/125123184 Apparently our ss thinks it might be a natural watercourse. He is getting the construction manager out tomorrow to have a look and then the engineer too. He said that it might mean extra piering and that the concrete is poured as the piers are dug. We have a French drain already around the outside of the building pad going to the back of the block. Could this be because we had the block cleared in December and with all the trees gone the water just hasn't found another outlet yet? Do you think we will need a French drain or drain of some sort under the house? I am confused though as 2 soil surveys were done and both said no subsurface water was present? Does this just mean they happened to test around this spot unfortunately? viewtopic.php?t=76386 You would be in Droiun by any chance ? Re: Subsurface water 6Apr 16, 2015 6:41 pm I have had experience with this situation recently.What you are jumping on is a natural spring, french drains in your situation won't do anything.You must not start construction until your site is fully investigated by a geotech company to confirm the water source. Re: Subsurface water 7Apr 16, 2015 6:45 pm insider I have had experience with this situation recently.What you are jumping on is a natural spring, french drains in your situation won't do anything.You must not start construction until your site is fully investigated by a geotech company to confirm the water source. Do you know if this falls back on us if there have already been soil tests done and site costs fixed? Is it possible to miss a natural Spring? viewtopic.php?t=76386 Re: Subsurface water 8Apr 16, 2015 7:19 pm Yes the one I have looked at the house is built.It is incredible that it has got to that stage.Now the owners in the street are take action against the council for allowing the development. The house is being retrospectively screw pile underpinned around the perimeter and they are going span the soft spots by supporting the concrete paving on screw piles. It is a real mess. That is the other consideration for you is even if your house is siting on screw piles it will be damp and cold under those soft spots.It will be difficult to walk around the outside of your house etc. It is possible to miss natural springs if your incompetent particular the second test. Did you buy the land subject to soil test? Re: Subsurface water 9Apr 16, 2015 7:27 pm insider Yes the one I have looked at the house is built.It is incredible that it has got to that stage.Now the owners in the street are take action against the council for allowing the development. The house is being retrospectively screw pile underpinned around the perimeter and they are going span the soft spots by supporting the concrete paving on screw piles. It is a real mess. That is the other consideration for you is even if your house is siting on screw piles it will be damp and cold under those soft spots.It will be difficult to walk around the outside of your house etc. It is possible to miss natural springs if your incompetent particular the second test. Did you buy the land subject to soil test? We had a soil test done before the land settled which couldn't be done with the big machines because it hadn't been cleared and that test came back as an s. The land settled back at the beginning of December. And it was bought off the council so it's not part of a development or estate or anything. Then the second test was done this year before our plans were sent to council which came back as an m. We do know our neighbours block had a lot of water on it as well and they had to install a lot of drainage. They told us within 2 months the house settled and cracked but that it hasn't moved since. That was 7 years ago now. They think all their water has now moved to our block. Hopefully they get the engineer in ASAP so we can have some answers. viewtopic.php?t=76386 Re: Subsurface water 11Apr 16, 2015 8:44 pm Good luck Shanniidc, I hope it's something simple and not something complicated Jen (& Dave) Plantation Bronte, Ormeau Ridge, Gold Coast QLD 12/03/2015 - Commencement... 26/08/2015 - Handover! viewtopic.php?f=31&t=76446 Re: Subsurface water 12Apr 16, 2015 8:48 pm [quote="Ilaeria"]Good luck Shanniidc, I hope it's something simple and not something complicated /quote] Yes me too but until the engineer looks at it its all speculation and guessing. viewtopic.php?t=76386 Re: Subsurface water 13Apr 19, 2015 4:10 pm The ground seems to have dried out a lot over the last few days so I'm hoping that means it's not some kind of spring or anything. No bouncy trampoline anymore. Engineer is coming sometime this week to do whatever he has to do. viewtopic.php?t=76386 Re: Subsurface water 14Apr 19, 2015 4:18 pm Well, that's positive! Fingers crossed for you Jen (& Dave) Plantation Bronte, Ormeau Ridge, Gold Coast QLD 12/03/2015 - Commencement... 26/08/2015 - Handover! viewtopic.php?f=31&t=76446 Re: Subsurface water 16Apr 19, 2015 4:54 pm Yes googling is always a good way of finding things so that's why I thought I would post so if anyone else ever goes through it our experience might have some answers viewtopic.php?t=76386 Re: Subsurface water 18Apr 23, 2015 7:59 pm So the engineer was on site doing whatever they do today drilling holes and checking for water and the good news is there was no water, no seepage, ground was all hard again. So they think it was maybe a perched water table and now it's seeped out. Whatever it was in glad it's gone. viewtopic.php?t=76386 Re: Subsurface water 19Apr 23, 2015 8:01 pm Yay! What a relief! Jen (& Dave) Plantation Bronte, Ormeau Ridge, Gold Coast QLD 12/03/2015 - Commencement... 26/08/2015 - Handover! viewtopic.php?f=31&t=76446 18 90473 From what I know about water tanks (I've been working with a client on them for a few years now) is this - The concrete can last a lifetime if they don't crack for some… 2 10629 4 10821 |