What type of studs are used to support the header assembly in load-bearing partitions?

In load-bearing partitions, jack studs are specifically designed to support the header assembly. When a header spans an opening, such as a door or window, it requires additional support beneath it to safely transfer the load from above down to the foundation. Jack studs serve this purpose by being positioned on either side of the opening, connecting the header to the sole plate (bottom plate) of the wall structure.

These studs are shorter than full-length studs and are crucial for distributing the load effectively, ensuring that the header remains stable. The orientation and placement of jack studs are essential in maintaining the structural integrity of the wall, particularly in areas where openings disrupt the continuous support of the framing.

Other types of studs mentioned may have specific functions in wall construction but do not serve the same role. Double studs might be used for reinforcement or to provide a solid edge for fastening drywall, blocking is generally used to provide support for fixtures or to reinforce corners and joints, while corner studs are used to form the outer edges of a wall and provide stiffness. However, none of these alternatives perform the load-bearing support function that jack studs provide specifically for header assemblies in openings.