Anybody know the typical packing density for split firewood? I'll be getting some large diameter ash this weekend and there is a total of about 15 linear feet of this stuff with an average diameter of about 3.5 feet. So I estimate the total solid volume to be about 144 cubic feet (15 x 3.14159 x (3/2) x (3/2)). I want to get a feel for how much cordage this is so i need to know a typical percentage for how much of a pile of stacked, split wood is actual wood and not air.