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  • pipe conversion

    I need to figure out how to convert a 20 foot piece of pipe with a 20 inch diameter so I can figure out how many yards of concrete it will take to fill it up. Can anyone help

  • #2
    Re: pipe conversion

    Originally posted by Unregistered
    I need to figure out how to convert a 20 foot piece of pipe with a 20 inch diameter so I can figure out how many yards of concrete it will take to fill it up. Can anyone help
    Is 20" the inside diameter? 20" = 1.667'

    Volume of pipe is (pi/4)*d*d*L = 0.785*1.667*1.667*20 = 43.63 ft³

    There are 27 ft³/yd³, so 1.62 yd³

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    • #3
      Re: pipe conversion

      Hello,

      I am wondering if you can help me with how many gallons of water would be in 600ft of 6" pipe. I know the formula for the volume of a cylinder is 3.14 x r squared x the height. But I'm not sure what to do because of the inches and feet.

      Thanks

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      • #4
        Re: pipe conversion

        Originally posted by Unregistered View Post
        Hello,

        I am wondering if you can help me with how many gallons of water would be in 600ft of 6" pipe. I know the formula for the volume of a cylinder is 3.14 x r squared x the height. But I'm not sure what to do because of the inches and feet.

        Thanks
        You have to change either the feet or the inches; you can't do volume in mixed units. Since a gallon is defined as 231 cubic inches, I recommend changing the length,
        600 ft x 12 in/ft = 7200 in, then
        3.14*(3 in)²*7200 in * 1gallon/231 in³ = 881.3 gallons

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