What does the term "run of a building" refer to?

The term "run of a building" typically refers to half the span of the building, which is important in construction and architectural planning. In this context, the "span" refers to the distance from one side of the building to the other, particularly across its widest point. By defining the run as half of that distance, it provides a useful measurement for various calculations, such as determining structural support needs, load distribution, and design aesthetics. This understanding helps architects and builders ensure that they create stable and functional structures that meet design and safety standards.

The other options do not accurately represent the term "run" in this context, as they focus on different dimensions of the building that are not related to the concept of "run."