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How strong to make a wall?

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  1. #1
    Golden Member
    Join Date
    Jun 2005
    Sunny Shine Coast

    Default How strong to make a wall?

    I am terracing under the house to make it more usable- who knows I may even concrete it - cheaper than building a shed.

    I'll end up with a series of low walls 2-4 hollow concrete blocks high. How big a footing should I put in and should I have steel rod up the hollows or would just filling with concrete be enough to hold the dirt on such a low wall?
    David L
    "A dedicated amateur will always do a better job than a slap dash professional"

  2. #2
    Old Chippy 6K
    Join Date
    Mar 2007


    Depends is the soil is stable and especially dry - ie: what forces are likely to be applied against the blocks you put in - what are they retaining? If low forces are expected then even a pad of 50-70mm or none at all would be sufficient. Hard to say without looking and knowing the soil geology.
    Advice from me on this forum is general and for guidance based on information given by the member posing the question. Not to be used in place of professional advice from people appropriately qualified in the relevant field. All structural work must be approved and constructed to the BCA or other relevant standards by suitably licensed persons. The person doing the work and reading my advice accepts responsibility for ensuring the work done accords with the applicable law.

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