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silly question mix ratios concrete and mortar

Discussion in 'Building' started by hunggaur, 26 Oct 2012.

  1. hunggaur

    hunggaur

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    hi a very silly question for you i have to build some garden walls i will be using ton bags of basalt what's the normal ratio for cement to basalt is it 4:1 or 3:1

    also what's the same for mortar is it again 3:1

    finally i have to build a small retaining wall about a 700mm high for a flower bed and edge of the driveway. How deep should the foundations be 100 or 200 mm single or double skin wall.

    cheers

    jon
     
  2. RonnyRaygun

    RonnyRaygun

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    4:1 or 3:1 are both far stronger than you will need.

    1:6 would be plenty strong enough for a small foundation.

    Same with the mortar...you don't need to mix it as strong as 1:3. 1:4 would be plenty strong enough.

    Make the foundations 225 deep by 450 wide with 215mm of brick/block on top
     
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  4. noseall

    noseall

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    Basalt :?: :confused:
     
  5. stuart45

    stuart45

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    It's an anagram of balast
     
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  7. noseall

    noseall

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    Ah, i see what you neam.
     
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