How to calculate CBM of cylindrical object like a pipe or roll..?? An interesting question from a reader in response to my previous article https://shippingandfreightresource.com/2009/02/20/how-to-calculate-cbm-freight-ton/ on how to calculate CBM..

Hallo,

How do you calculate the volume of a Roll eg. a carpet @ 3.00m(length) x 0.60m (diameter)

Thanks!

Let me explain how to calculate CBM of a pipe or a cylindrical object..

Firstly you need to make sure that all measurements are in metres as usual.. Secondly we will consider a roll as a cylinder and the length of the roll is to be taken as the height..

The formula for calculation of volume of a cylinder = pi x r[squared] x h where

- pi is the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159 (this is a standard measurement)
- r is the radius (half of the diameter)
- h is the height (equal to the length)

So in this case,

pi = 3.14159, r = .3 (half of the diameter) and h = 3

So using the formula pir[squared]h, the CBM = 3.14159 x .09 x 3 = **0.848** = less than a cubic metre

That will be end of the mathematics lesson.. 😮

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