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trench blocks

  1. N

    Concrete outbuilding foundations

    I'm building a 5x3m 2.5m high single skin concrete outbuilding. It will act as a gym. I'm looking for advise with the foundations. Based on Structure: Approved Document A the width of the footing is advised to a be a minimum width of 250mm and depth of the excavation 450mm based on my wall and...
    • nordita
    • Thread
    • foundations trench blocks
    • Replies: 5
    • Forum: Building
  2. C

    Trench Blocks

    I`ve got a surplus of Tarmac Toplite trench blocks. CAN i use them to build a raised garden bed and render them? I know they can be used under DPC and as trench blocks obviously, but are they okay for a raised bed and will they take render? o_O
    • caslin
    • Thread
    • blocks garden raised bed trench blocks
    • Replies: 1
    • Forum: Building
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