Masonry Magazine September 2012 Page. 22
ANCHORS, CONNECTORS, AND FASTENERS
# Placement in veneer:
BOTH SOLID AND HOLLOW masonry units should have the anchors embedded a minimum of 1.5 inches from the interior veneer face and should have at least 5/8-inch mortar or grout cover to the outside face.
The code allowances below are for veneers that are a maximum of 4.5 inches from the backup and the inside of the veneer. The minimum airspace allowed is one inch.
There are five types of anchors noted in the code: corrugated sheet metal anchors, sheet metal anchors, wire anchors, joint reinforcement, and adjustable anchors.
# 1. Corrugated sheet metal anchors:
These are to be a minimum size of 22 gage x 7/8-inch-wide with corrugation wavelength between 0.3 to 0.5 inch, and an amplitude of 0.06 to 0.1 inch. These anchors primarily are used in residential brick veneers and are only allowed with wood-frame backups and a maximum airspace of one inch. They are to be installed with screws or ring-shanked nails. The fastener must be located within ½ inch of the 90-degree bend in the anchor.
# 2. Sheet metal anchors:
These are more commonly seen in commercial applications. Sheet metal anchors have a minimum thickness of 16 gage and a minimum width of 7/8 inch.