The tolerances vary depending on the type and size of brick, but they are minimal and will usually not affect the architectural design.
The actual dimensions of the brick are within certain tolerances of the specified size - tolerances are spelled out in ASTM C216, Standard Specification for Facing Brick and ASTM C652, Standard Specification for Hollow Brick. In non-modular construction, the specified size is the only size used as you'll see in the tables below - non-modular construction is uncommon.Īctual brick dimensions are the final measurements of the brick as it comes out of the manufacturing plant. Architects will include the specified size in their drawings and specifications. Specified dimensions are the anticipated manufactured dimensions of a brick without taking the mortar joint size into account. Specified brick dimensions are the dimensions that architects use in designing a wall. There are three different ways of discussing sizes when it comes to brick and it is important to understand the different sizes so there isn't any confusion - we will start by discussing the different dimensions: specified, actual, and nominal. Brick Types and Specification Based on Application.Brick Sizes: 1/2" Mortar Joint Between Bricks.Brick Sizes: 3/8" Mortar Joint Between Bricks (Most Common).