Florida Building Code Practice Exam

What is the minimum bearing required on masonry for ends of floor joists unless supported by a ribbon strip?

1. 1-1/2 inches

2. 2 inches

3. 2-1/2 inches

4. 3 inches

The correct answer is: 3 inches

The minimum bearing required on masonry for the ends of floor joists is specified to ensure the structural integrity and stability of the framing system. In this case, the requirement of 3 inches provides a sufficient bearing surface for load distribution, minimizing the risk of joist movement or settling that could compromise the building's structural performance. Adequate bearing is essential, particularly in masonry applications where loads must be effectively transferred to the foundation or the supporting wall. This specific requirement helps prevent potential failure modes that could arise from inadequate support, such as cracking in masonry or joist deflection. The 3-inch bearing ensures a robust connection between the floor framing and the wall, aligning with best practices outlined in the Florida Building Code, which aims to promote safety and durability in construction.