The formula is as followed: Usable Space = Total Sq. Ft. – Non-Storage Space Sq. Ft. 150,000 Sq. Ft. – 30,000 Sq. Ft. = 120,000 Sq. Ft. Storage Capacity = Usable Space in Sq. Ft. * Maximum Stack Height in Ft. 120,000 Sq. Ft. * 30 Ft. = 3,600,000 Cubic Feet. Nov 10, 2021