Browse Forums General Discussion Re: water seeping through from under slab into post hole 2Mar 11, 2024 4:59 am Architectural Homes & Duplexes - specialising in custom designing homes to your budget Get a Free Onsite Consultation Today or send a PM for information, questions or advice. Re: water seeping through from under slab into post hole 4Mar 11, 2024 5:38 pm We literally have water evaporating through 30cm warehouse slab up in campbellfield. Cannot see the water, but where it draws out the salt through the slab that's where you can see it. Comes a few months after a really wet season. There was black plastic membrane put in during the pour, but I don't think you can do much in regards to the water table. Re: water seeping through from under slab into post hole 5Mar 18, 2024 7:23 pm The soil profile looks like fill which is common in Mickelham. What happens is water permeates through fill and then ponds on the natural soil layer so when you dig it up it looks like a water table but is not. We call this temporary perched water table or seepage. We have had a very wet 3 years so this may not be an ongoing issue. Check your drainage in this area. Is there water being dump into this area eg end of a pavement sloping to this area.Is there a pergola without gutters connection to the stormwater system etc. Shouldn't be a major problem anyway. Keep an eye out for water salts forming on your brickwork which is called efflorescence then maybe it is an ongoing issue. Re: water seeping through from under slab into post hole 6Mar 18, 2024 7:28 pm groundzero The soil profile looks like fill which is common in Mickelham. What happens is water permeates through fill and then ponds on the natural soil layer so when you dig it up it looks like a water table but is not. We call this temporary perched water table or seepage. We have had a very wet 3 years so this may not be an ongoing issue. Check your drainage in this area. Is there water being dump into this area eg end of a pavement sloping to this area.Is there a pergola without gutters connection to the stormwater system etc. Shouldn't be a major problem anyway. Keep an eye out for water salts forming on your brickwork which is called efflorescence then maybe it is an ongoing issue. Thanks Mate. I have contacted the builder and they are sending the drainers to check. Re: water seeping through from under slab into post hole 7Mar 19, 2024 8:26 am Water this close to the slab edge or under the slab can cause slab heave or subsidence and is potentially a serious problem especially on highly reactive clay soils. Over the years I have seen many slabs damaged. One two storey house I saw in Avondale Heights did not have any cracking or visible distress but was 100mm out of level and acquired self opening and self closing doors. The whole house tilted without cracking. Roll some marbles on the floor. So do not dismiss what you see or it may come back to bite you. You should have your own independent assessment. Regardless of the fact that you are the third owner you are covered by builders warranty for 10 years Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog Re: water seeping through from under slab into post hole 8Apr 05, 2024 9:51 pm building-expert Water this close to the slab edge or under the slab can cause slab heave or subsidence and is potentially a serious problem especially on highly reactive clay soils. Over the years I have seen many slabs damaged. One two storey house I saw in Avondale Heights did not have any cracking or visible distress but was 100mm out of level and acquired self opening and self closing doors. The whole house tilted without cracking. Roll some marbles on the floor. So do not dismiss what you see or it may come back to bite you. You should have your own independent assessment. Regardless of the fact that you are the third owner you are covered by builders warranty for 10 years Thanks for your advice. So far i have not noticed any issues with doors and windows. Builder advised they will organise drainers to inspect 2 weeks ago but no further update since. What type of professional will be able to investigate this issue? I can't afford to pay someone now but will definitely have it assessed independently as well. Just removed 40 liters of water in the span of 2 hours. Water fills up the hole just above the seepage point and doesn't overflow. 1 1222 can’t tell from the photo, a tie down rod will be 12mm, is it a steel beam? he should be able to work it out 1 4555 4 5237 |