Tiered Storage : An arrangement in which cotton bales are stored two or more bales high directly on the floor or ground, usually on dunnage where stored outdoors
NFPA 230 Standard for the Fire Protection of Storage 1999 ed. http://www.nfpa.org/assets/files/aboutthecodes/230 /230-f2002-rop.pdf, (Std: Fr Prac of Storage - Amer) {267 NFC}