Massachusetts Unrestricted Construction Supervisor License Practice Test

In a single family dwelling, when is it required to use hangers for header-joist to trimmer joist connections?

1. When the header joist span exceeds 4 feet

2. When the header joist span exceeds 5 feet

3. When the header joist span exceeds 6 feet

4. When the header joist span exceeds 8 feet

The correct answer is: When the header joist span exceeds 6 feet

The requirement to use hangers for header-joist to trimmer joist connections in single-family dwellings is based on structural integrity and load considerations. When the header joist span exceeds 6 feet, it becomes critical to provide adequate support to prevent sagging or failure under load. Hangers improve the connection between the header joist and the trimmer joist, enhancing the overall strength of the framework. Using hangers in installations where the span exceeds this length helps distribute the load more evenly and reduces the risk of bending or breaking that could occur with a simple nailing connection. The code delineates this specific span to ensure that construction meets safety standards and maintains the structural performance needed for single-family homes.