Most firewood stacks are designed to be a face-cord in size. This equates to a stack of 16 inch logs in a 4 foot x 8 foot row, or 64 cubic feet. This equates to 1/3 of a cord in total mass. Face cords give the best dimensions for drying wood because they are only a single log in width which maximizes airflow and sunlight from both sides of the stack.