R606.6.3 Beam Supports

Beams, girders or other concentrated loads supported by a wall or column shall have a bearing of not less than 3 inches (76 mm) in length measured parallel to the beam on solid masonry not less than 4 inches (102 mm) in thickness, or on a metal bearing plate of adequate design and dimensions to distribute the load safely, or on a continuous reinforced masonry member projecting not less than 4 inches (102 mm) from the face of the wall.

Joists shall have a bearing of not less than 1¹/₂ inches (38 mm), except as provided in Section R606.6.3, and shall be supported in accordance with Figure R606.11(1).