Which component is NOT typically included in wood frame wall assemblies?

Bridging is not typically included in standard wood frame wall assemblies. Wood frame walls are primarily composed of studs, which provide structural support, sheathing that adds rigidity and serves as a structural skin, and drywall that finishes the interior surface and provides aesthetic qualities.

In conventional construction practices, bridging is more commonly associated with floor framing systems. It is often used in floor joist assemblies to enhance stability and provide lateral support, preventing joists from twisting or buckling. While bridging can be used in some wall applications, it is not a standard component found in every wood frame wall assembly, making it an uncommon choice compared to the other elements mentioned.