Specifications
Green Leaf Brick are manufactured to meet the specifactions for FACING BRICK as defined by ASTM C216 standards. These specifictions cover brick intended for masonry use as facing brick or for stuctural applications.
ASTM C216 gives standards which qualify a brick as being of a specific grade or quality. It also describes and sets limits for certain parameters, such as coring or hole sizes, and chippage. As an example, under ASTM C216 brick can have a maximum core volume of 25% of the bed.
There are also classifications for the grade of the brick, being either moderate weather (MW) or severe weather (SW) rated. Green Leaf Brick are classified as Severe Weather (SW). This classification means that the brick should survive well in a cold climate, and be resistant to the effects of freezing and thawing. Some poorly made brick will spall and chip under freezing conditions.
Brick are also categorized by their allowable sizing tolerances. Green Leaf Brick are classified as type FBS, meaning that permissible variations in sizing on a standard brick are +/- 1/4" on the longest length.