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    andrew99's Avatar
    andrew99 Posts: 1, Reputation: 1
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    #1

    Feb 26, 2012, 11:44 PM
    Pinning concrete
    I've just poured 23m2 of concrete against my house,at one end of the pour is also a trench for a block wall, I'm worried as the slab was not pinned to the house, the level was excuvated down for a step so underpinning I thought would be the answear but this was not done, is this a concern or will it eventually find its compaction rate.thanks
    Chris_Klein's Avatar
    Chris_Klein Posts: 6, Reputation: 2
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    #2

    Mar 7, 2012, 06:20 AM
    Pinning the slab to your house does not anchor it.. in fact engineers design for movement in slabs and isolation joints between surface beds and walls is a standard practice.. thus the only factor would be to compact the ground underneath the slab, before you pour the concrete, a 98% MOD ASSHTO compaction of a G5 Material will suffice. Remember to use reinforcing on your slab to prevent cracking a Fabric Mesh Reference 193 will work perfectly 50mm below the top of concrete.
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