stiffened expanded metal
rib lath, stiffened expanded metal
Expanded-metal lath having V-shaped ribs to provide greater stiffness and to permit wider spacing of framing members.
Expanded-metal rib lath used on bar joists as formwork for concrete floors, or for lathing in 2-in. (5-cm) solid plaster partitions.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.