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  • over-estimated cubic feet to ton?

    I've called two different companies, both of whom claim it will take 4-5 tons of sand to fill a hole 12' x 12' x 5". I don't know if the sand is wet or dry, but I'm assuming it is damp, what with weather in Missouri.

    Is this an accurate estimate? Elsewhere, we've calculated roughly 76 cubic feet of sand for fill and jointing of pavers. I know that's not even close to what these guys are estimating. Can you help?

    Thanks,

    Lisa Marie

  • #2
    Re: over-estimated cubic feet to ton?

    First all the base units need to be the same, such as feet, then just multiply together to get the volume.

    12 feet * 12 feet * (5 inches/12) feet = 60 cubic feet

    Now multiply that by the density in pounds/cubic feet to get pounds.

    Here is some density data:
    Sand, wet - 120 pounds/cubic foot
    Sand, wet, packed - 130 pounds/cubic foot
    Sand, dry - 100 pounds/cubic foot
    Sand, loose - 90 pounds/cubic foot
    Sand, rammed - 105 pounds/cubic foot
    Sand, water filled - 120 pounds/cubic foot

    Choose which type of sand, then just multiply. For example, wet sand at 120 pounds/cubic foot

    60 cubic foot * 120 pounds/cubic foot = 7200 pounds
    7200 pounds / 2000 = 3.6 tons

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    • #3
      Re: over-estimated cubic feet to ton?

      Thank you so much for your help. I still think that sounds awfully high -- but the numbers don't lie, do they? <smile> Thanks.

      Lisa Marie

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      • #4
        Re: over-estimated cubic feet to ton?

        Originally posted by Unregistered
        I've called two different companies, both of whom claim it will take 4-5 tons of sand to fill a hole 12' x 12' x 5". I don't know if the sand is wet or dry, but I'm assuming it is damp, what with weather in Missouri.

        Is this an accurate estimate? Elsewhere, we've calculated roughly 76 cubic feet of sand for fill and jointing of pavers. I know that's not even close to what these guys are estimating. Can you help?

        Thanks,

        Lisa Marie
        The companies are filling the hole completly with sand. You are estimating filling the hole with pavers in in. Big difference.

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        • #5
          Re: over-estimated cubic feet to ton?

          How do I convert 355 cubic feet to tonnes.

          The item in question is gravel

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          • #6
            Re: over-estimated cubic feet to ton?

            Originally posted by Unregistered
            How do I convert 355 cubic feet to tonnes.

            The item in question is gravel
            Dry gravel is about 2600 lb/yd, and 1 yd is 27 ft

            355 ft x 1 yd/27 ft x 2600 lb/yd x 0.4536 kg/lb x 1 t/1000 kg = 15.5 metric tons (tonnes)

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            • #7
              Re:

              how to convert 220 centimeters into meters

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              • #8
                Re:

                Originally posted by Unregistered View Post
                how to convert 220 centimeters into meters
                Divide by 100, 2.2 m

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                • #9
                  cft to ton

                  How to concert to tons sand 710 cft

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                  • #10
                    Re: cft to ton

                    Originally posted by rks743@gmail.com View Post
                    How to concert to tons sand 710 cft
                    How do i convent M.Sand in Tones to CFT or CUM

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                    • #11
                      Re: cft to ton

                      Originally posted by Unregistered View Post
                      How do i convent M.Sand in Tones to CFT or CUM
                      See the figures in post. In metric, multiply those figures by 16.02 for kilograms per cubic meter, or by 0.01602 for tonnes per cubic meter.

                      Loose dry sand is 90 lb/ft, thus about 1.44 t/m. Divide tonnage by 1.44 for cubic meters. For packed and/or wet sand use one of the other figures.

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