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Foundation blocks retaining wall - frost damage fears

Discussion in 'Building' started by Stocho, 10 Mar 2013.

  1. Stocho

    Stocho

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    Hi I built a retaining wall with dense foundation blocks like the ones in the link below ----> http://www.building-supplies-online.co.uk/concrete-hollow-block-tarmac-topcrete-dense-116-p.asp

    They were put without foundation on freshly filled topsoil which was compacted very vigorously by lifting one of these 30kg blocks and hitting the soil repeatedly.

    Scaffolding piping (3-4 feet) was hammered through the hollow sections and the hollow bit were then filled with postcrete and concrete.

    The concern is whether this will get damaged overtime because they are foundation blocks and meant to be bellow ground and are quite course rather smooth - so during cold weather after can get into them and then freeze and break them. Has anyone had any such experience with them? Is it OK to use them above ground level outside exposed to the elements? There is just one level of them so if one crumbles in five years it is not really a problem - but if all of them.....
     
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  3. noseall

    noseall

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    Er.....hang on, you have built a retaining wall onto back-filled top soil (no foundations) and are worried about the blocks spalling? :eek:

    The blocks will be fine.
     
  4. limerockconstruction

    limerockconstruction

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    7.2n blocks will be fine, as above, your foundation detail should be more of a concern! 3ft of scaffolding tube with some postcrete doesn't really substitute a solid base for strip foundations or a piled foundation!!
     
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