Concreted my alfresco area which is under the main roof. It was a strip footing originally, i have since had approx. 150mm concrete floor poured ontop. Issue is it was laser level and 12months on its raised approx. 5mm ? compared to house foundation.
What is the cause? Remembering its poured ontop of a strip footing connected to the house foundation.
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Browse Forums Paving & Concreting Re: Concrete floor raised? issue? 2Mar 12, 2023 3:26 pm If it wasn't poured mono, or poured separately, did you put Z- tie bars in between footing and slab? Furthermore, do you have the correct engineering details? Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs  03 Oct 2019 14 Junior Member Re: Concrete floor raised? issue? 3Mar 12, 2023 6:02 pm House foundation was engineered with alfresco under main roof, strip footings were 400mm deep all tied in. No issues with the place at all in almost 15years. Last 12months a seperate slab has been poured directly ontop of the existing strip footing, approx. 150mm deep, mesh, 32mpa. The slab has not moved side to side, just raised were the 2 meet approx. 5mm. There is no cracking in the concrete at all. Re: Concrete floor raised? issue? 5Mar 13, 2023 10:56 am 5mm still maybe within tolerance you'll need to monitor it for longer.. see how it goes Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Concrete floor raised? issue? 7Mar 15, 2023 9:59 am  Dan87Ill leave it for another 12months, plan was to tile. Ive had it looked at and its the same anwser i was given. Thanks Here Checking Deflections with Bosch laser tool I highly recommend you check slab movement. The changes in height will match crack patterns within the slab, also the data/proofs comes in handy when presenting a case against the builder or concretor After 12 months, if it's not required sell the level on gumtree Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs 03 Oct 2019 14 Junior Member Re: Concrete floor raised? issue? 8Mar 23, 2023 10:01 am Just an update. Its suffering from "slab heave". Issue is the 2 downpipes which were directed away from foundation has ran back. Our last downpour was a good 6weeks ago. Once this has been plumbed back into stormwater, will the slab settle back into original position once dryed out? Could i expect anymore raising from the rain 6weeks ago? thanks chippy! here is the back of the wall which has not been backfilled yet. Here is the same back of the wall taken from the other end, behind the steps. As you… 5 13201 Hi, I'm after a bit of advice; we have just had a 61sqm exposed aggregate slab installed by a concreter which runs from our house in Frankston, Victoria to within 200mm of… 0 5416 |
