Which construction element refers specifically to a central support post or column?

In the context of construction elements, a mullion is a vertical or horizontal element that divides adjacent window units or door frames. However, when referring specifically to a central support post or column, a more appropriate term would be a pier. A pier is typically a vertical structure that supports the load of a building, often found in walls or as part of foundations.

Understanding this terminology is essential for interpreting architectural drawings and ensuring proper structural support in construction projects. While mullions, transoms, and firestops serve their own distinct functions, they do not refer to columns or central support structures. Therefore, recognizing that a pier designates a support element clarifies its importance in maintaining the integrity of a structure.