How many jack studs are typically needed per side of a header?

The typical requirement for jack studs on either side of a header in residential construction is to use two jack studs. Jack studs, also known as trimmer studs, are designed to support the header above an opening, such as a door or window, and to transfer the load from the header down to the foundation.

Using only one jack stud on each side of the header would often result in insufficient support, particularly in larger openings, which can compromise the structural integrity of the wall.

In standard framing practices, two jack studs on each side provide a stable base to adequately distribute the weight from the header and withstand lateral forces, ensuring that the structure remains sound. Therefore, for standard residential construction, two jack studs per side is typically the correct practice as it aligns with building codes that promote safety and stability.