Shredded UBC shall consist of aluminum Used Beverage Cans that have been magnetically separated and shredded into uniform material handleable (pneumatic) state. the shredded UBC shall have a minimum density of 12 LBS. (pounds) per cubic foot and a maximum weight density of 17 LBS. per cubic foot. Must be fee of excessive fine material under 4 mesh in size. must be free of other metals and foreign material. Equivalent to ISRI code TALCRED.