In framing, what does the abbreviation 'OC' stand for?

In framing, the abbreviation 'OC' stands for "On Center," which refers to the measurement technique used in construction. This term is crucial in determining the spacing of various framing members, such as studs, joists, and rafters, in a wall or ceiling. By using the on-center measurement, builders establish a consistent distance between the centers of two adjacent framing members, typically measured in inches, like 16 or 24 inches OC. This uniformity is essential for structural integrity, as it ensures that materials such as insulation, drywall, or sheathing can be installed properly and that loads are distributed evenly.

The other options relate to concepts that are not standard abbreviations in framing and therefore do not convey the meaning of 'OC' in this context. Defining measurements specifically helps streamline the construction process and improve accuracy in building design.