ASTM C 652 has different face shell thickness requirements for units with nominal widths of 8, 10 and 12 in. From discussions with industry experts this could be based on the manufacturing limits or practice at the time the dimensional requirements were set. With modern manufacturing technologies quality hollow brick can be manufactured with thinner web shells. This would reduce the weight of the units, seismic design loads and transportation and installation cost with out significantly impacting the structural capacity.
Keywordsappearance requirements; clay; fired masonry unit; hollow brick; hollow building brick; hollow facing brick; masonry construction; physical properties; shale; Shale; Brick--specifications; Appearance of materials--specifications; Chemical-resistant brick--specifications; Chemical-resistant materials/products--specifications; Chemical-resistant monolithic surfacings--sapecifications; Clay products (structural)--brick (specifications); Fired masonry unit; Hollow facing brick; Hollow load-bearing masonry units; Loadbearing masonry units--specifications; Masonry units--specifications; Physical properties/dimensions/characteristics;
Ballot Item Approved as C652-2015 and Pending Publication