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volume of topsoil

Help, I need to order some topsoil for a raised bed. the dimensions are 4 metres by 5 meters to a depth of 8 inches or so, how do I work it out please.

Posts

  • KT53KT53 Posts: 9,016

    Multiply 5 x 4 x .2 (8 inches being 20 centimetres) comes to 4 cubic metres.

  • Marvellous, but how does that become tonnes?

  • fidgetbonesfidgetbones Posts: 17,618

    The builders bags that are approx 1 m cube hold a tonne of gravel etc. I would consider 4 cubic metres to be 4 tonnes.

  • Many thanks to you both. I will be ordering with confidence.

  • Most top soil is sold in bulk bags that contain 0.64 cube not tonnes.  1 cube is equal to aprox 2.41 tonnes.

  • KT53KT53 Posts: 9,016

    If you can purchase by volume rather than weight you have a much better idea of the quantity you will receive.  Possibly stating the obvious, but wet soil will weigh considerably more than dry(ish). 

  • thank you everyone.

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