Deflection Criteria for Brick Loads

The Brick Institute of America (BIA) recommends L/600 total vertical load deflection not to exceed 0.3". These recommendations are contained in the Masonry Standards Joint Committee (MSJC) Code. For more information about the design of members supporting brick, refer to the BIA Technical Notes (Section 1.10).  Also refer to the International Residential Code^® (IRC) section R703.8.2.