Measuring of piled wood reveals the quantity of cut pulpwood, either on a roadside or a vehicle load. It involves measuring the length and height of the woodpile, and the average length of timber. These figures provide a way of counting the gross volume of a pile. The piled measure is then converted into the solid volume by using the true volume coefficient defined for every tree species. The way the woodpile is stacked, and the medium thickness, knottiness, and crookedness of the wood affect the true volume.
The true volume coefficients have been defined for pine, spruce and birch.