Stack factor

The factor by which the surface area of the item is divided. If the stack factor is 10, the surface area of the item is divided by 10. The stack factor of an item indicates the number of items of roughly the same surface area that you can pile on top of the item. On an item with stack factor 10, you can stack nine items with more or less the same surface area. The stack factor provides an estimate, and not the real surface area. For example, for an item with stack factor 10, 1/10th of its actual surface area is calculated as the surface area that the item uses up of the loading capacity of the vehicle in which it is transported. It is assumed that nine other items of roughly the same size will be stacked on top of the item.