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  • I would calculate length x width x depth x 1.25 for tonne. So for example 1mx50mx0.08m=4 x1.25 =5 tonne.

    • Thanks for the reply mate.


      So 8x7x0.08x1.25 =5.6 tonne so 6 tonne bags

       or am I doing that wrong? 


      Also why is the tonne 1.25? 



      • Just check with suppliers how much is in the bulk bags it's not always a tonne, must suppliers around are around 850kgs. That looks right calculation, be interested to see other members comments. Thanks Mark 

      • that is the weight of 1m3 of stone, builders/ bulk bags only carry about .75m3 due to the load weight of 1 tonne per bag 

  • PRO

    50 m square would be 5 bulk bags at 2 inches depth.

    0r 4 tonne loose at 2 inches.

  • PRO

    Rule of thumb is around 1 bulk bag per 10m2.

    That saying it’s dependant on what your are lying ie pebbles will not have as thorough a coverage as say a 10 or 20mm gravel.

    • Good point.  1 bulk bag Plum slate paddlestones only covered 5m2. 

  • For every 12m you need 1 tonne at 2 inch depth. A builders bag only holds 850kg so adjust accordingly 

This reply was deleted.

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