Which of the following is NOT a type of framing member used in floor openings?

In residential construction, different framing members are employed to create floor openings and support loads in various ways. Headers, trimmers, and tail joists are all specifically involved in framing for openings, while studs typically refer to vertical framing members used in wall construction.

Headers are structural elements that span over openings like doors and windows, allowing for load distribution. Trimmers are used to support the ends of headers and are essential for framing around openings. Tail joists, on the other hand, are the ends of joists that provide support for the floor or ceiling system when installed around an opening.

Studs, in contrast, are primarily vertical members found in walls, not specifically associated with the framing of floor openings. They serve to provide structural integrity and support the wall sheathing, but do not play a direct role in creating or framing the structure around openings in a floor system. This distinction is crucial for understanding how different framing components interact in building construction.