Which method provides lateral restraint for ends of bottom bearing joists?

Which method provides lateral restraint for ends of bottom bearing joists?

• A. Toenailing
• B. Screws only
• C. Solid blocking
• D. Metal brackets

Answer: (C)

The method that provides lateral restraint for the ends of bottom bearing joists is solid blocking. Solid blocking involves using pieces of material, usually wood, that are installed between joists or between a joist and a beam. This added material effectively stabilizes the joists by preventing them from twisting or moving laterally under load, which is crucial in maintaining the structural integrity of the floor system. By using solid blocks, the load is evenly distributed, and this provides a more rigid connection. It helps to create a diaphragm effect, which resists lateral forces such as wind or seismic activity. This method is especially important in areas where there may be significant lateral forces acting on the structure. Other methods like toenailing, while effective for securing joists, do not provide the same level of lateral support as solid blocking. Screws alone also do not offer the necessary lateral restraint; they primarily serve as fasteners without blocking. Metal brackets can add support, but they may not provide the same degree of resistance to lateral movement as solid blocks specifically designed for this purpose.

The method that provides lateral restraint for the ends of bottom bearing joists is solid blocking. Solid blocking involves using pieces of material, usually wood, that are installed between joists or between a joist and a beam. This added material effectively stabilizes the joists by preventing them from twisting or moving laterally under load, which is crucial in maintaining the structural integrity of the floor system.

By using solid blocks, the load is evenly distributed, and this provides a more rigid connection. It helps to create a diaphragm effect, which resists lateral forces such as wind or seismic activity. This method is especially important in areas where there may be significant lateral forces acting on the structure.

Other methods like toenailing, while effective for securing joists, do not provide the same level of lateral support as solid blocking. Screws alone also do not offer the necessary lateral restraint; they primarily serve as fasteners without blocking. Metal brackets can add support, but they may not provide the same degree of resistance to lateral movement as solid blocks specifically designed for this purpose.