Earth Filling - Converting Weight to Volume
The problem with this type of conversion is that it isn't as simple as it sounds. For example, a metric ton is a unit of weight and liter is a unit of volume. To complete a calculation such as this, you need to be able to factor in the density of the substance that you are looking to convert and include that in the formula calculation.
We also need to know bulk density of the material.
For those people looking for the formula for converting volume to weight, and vice-versa, it looks like this (adapted from www.answers.com):
"Density = mass/volume (ρ=m/V). So V=m/ρ and has units (kilograms)/(kilograms per cubic meter)=cubic meter.
If you are dealing with other units, say pounds, as a unit of weight, 'then 1 kg corresponds to 2.21 lb at sea level in the sense that the weight of 1 kg is 2.21 lb at sea level. Similarly 1 lb corresponds to 453.6 g and 1 oz to 28.35 g' (Beiser, A. Physics, 5th ed, Addison Wesley, 1992)"
Real Life Example:
Aviva Trucks carries say around 16 T of the material , so when we fill Aviva truck with the Earth weight of the truck has to be determined to know actually how much volume of earth truck holds, For this we need to know the density of the soil and its bulk density because excavated earth had air voids which actually decreases the density of the material.
So to calculate Volume in CUM then
Volume = 16/1.85 = 8.5 cum say 9 cum.