Because the Veneer and Backup in a Brick Veneer Assembly

Essay

Because the veneer and backup in a brick veneer assembly are made of different materials and are exposed to different temperature variations, they expand and contract at different rates in their own vertical planes. To allow the veneer and backup to move unrestricted in their own planes, the veneer anchors must be made of two pieces. However, one- piece veneer anchors are used in some situations. Which are those situations, and what does a one- piece anchor consist of?