...Tons of Hay in Stacks. The number of cubic feet in a hay stack equals .31 multiplied by the overthrow (distance from the ground on one. side over the top of the stack to the ground on the other side) by the width by the length. Divide the total number of cubic feet in the stack by the number of cubic...

...is much easier to measure the "over," which is the distance from the ground on one side of the stack over the top of the stack to the ground on the other side. The length of the "over" depends upon three things: (1) width, (2) height, and (3) "fullness" of the...