Browse Forums General Discussion 1 Jan 20, 2014 10:01 pm Hi, Yesterday I was searching for roots from trees that were removed when my block was cleared last year. I knew where they were located and started poking around only to find water down about 15cm. My block has a fall of 2m from back to front and we have not had any significant rain in the past months. I know where old trees once stood, it can leave damp conditions for quite a while being clay but my father said there is a water spring in this area but can't remember exactly the whereabouts. My worry is what trouble am I in for once my house is built(Concrete slab)? The soil tests from the builder shows that a H1 slab is required but I had another test from a different builder who said a H2 was required and both didn't mention any water problems. Anyone had this before and will it be a problem down the track e.g. rising damp? Regards, Jasper 26 Built the Avoca @ Aquilo, Bonnells Bay http://avocaonaquilo.blogspot.com.au/ 12/10/13 $3K Deposit 31/10/13 Consolidated Tender 11/11/13 Colour Selection 18/02/14 DA approved 19/02/14 Electricals Re: Advice Please, Sub-surface Water Problem 2Jan 21, 2014 8:47 am I'd try and find the spring for sure before you start any building. Dampness is one thing ( and it is surprising how long roots can keep the soil damp ) but ponding water is another kettle of fish entirely. You almost certainly won't be able to stop the spring but by installing a decent drain ( not not just a cheap flexible ag line you buy from Bunnings either ) you may be able to direct the water away from where you will be building your house thus avoiding potential problems down the track after it is finished. Failing to find the spring yourself you may have to hire a hydraulics engineer or some other specialist ( some of them have great water tracking devices ). Stewie It will be neat but you won't have much freeboard. At least they are not weep holes. Are you in a high intensity rainfall region? The regulatory slope is only required… 3 8245 You can wash over existing pavers with 10% solution of water and hydrochloric acid, then wash off. The acid will provide for required bond key with new concrete. 1 36949 |