Joists shall be supported laterally at the ends by full depth solid blocking not less than which nominal thickness?

Joists are critical structural elements in a building, requiring appropriate lateral support to maintain their integrity and prevent buckling under load. The requirement for full depth solid blocking provides necessary stability at the ends of joists, contributing to the overall strength of the floor system.

The specified nominal thickness of 2 inches for solid blocking ensures that the blocking can effectively transfer loads between the joists and provide adequate lateral support. This thickness allows the blocking to fill the space between the joists completely, maintaining alignment and preventing movement that could lead to structural failure. By adhering to this standard, builders ensure enhanced safety and durability in the construction of floors and ceilings.

Thicker options, while appearing potentially stronger, may not be mandated by code and could introduce unnecessary weight or difficulty in installation. Conversely, thinner options might not provide the necessary support required for proper structural performance. Therefore, the 2-inch nominal thickness establishes a balance between adequate strength and ease of construction, making it the correct specification in this context.