How much Gravel?

Discussion in 'Building' started by rsbhj, 25 Mar 2021.

  1. rsbhj

    rsbhj

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    Looking for some help on how bulk bags of gravel I need?

    Its for a french drain sizes below

    Length - 10m
    width - 50cm
    depth - 50cm

    I will need a layer of gravel 15cm, then the pipe laid on top (PERF LAND DRAIN 110MM), then back fill the gravel for another 20cm (35cm in total)

    Thanks
     
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  3. Ian H

    Ian H

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    You won’t be far off with 1 bag.
     
  4. rsbhj

    rsbhj

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    I found and online calculator with a gravel company... put in the figures and it calculated 3 bulk bags?

    I did change the 0.5 wide to 0.3 wide as prior to that it was 4 bulk bags (3ton)

    I thought that was extreme, how do you work it out?
     

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  5. hoq

    hoq

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    Try the calculations page on Paving expert website.
     
  6. rsbhj

    rsbhj

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    Had a look just now looks the same as the others I have tried 3 Tons
     
  7. Ian H

    Ian H

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    I just imagined cutting a bulk bag into 9 like a # and thought that would be close. Although when I read the post I thought the trench was 35cm wide :LOL:
     
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