Calculate the volume of wood needed in cubic metres to make pulp.

Formulas used:

Pod ÷ Y = Wod

where Pod = oven-dry weight of pulp
Y = yield factor
Wod = oven-dry weight of wood

Wod ÷ Sgd = V

Wod = oven-dry weight of wood
Sgd = species density
V = volume in cubic metres

Sample calculation

Need 1000 kg of oven-dry pulp
Species basic specific gravity, Quaking Aspen = 0.35
Yield factor = 45%

1000 ÷ 0.45 =  2,222.2 lbs of wood material needed
2,222.2 ÷ (0.35 * 1000) = 6.35 m³

It would require 6.35 cubic metres of wood to make 1000 kg of pulp

Calculation

1. required amount of bone dry pulp in kilograms
2. tree species basic specific gravity
3. recovery yield factor in a percentage

Results

1. wood material needed in kilograms
2. volume of wood needed in cubic metres
3. equivalent amount of wood needed in cords (85 ft³ solid wood cord)