An opening connecting 2 or more stories that is closed at the top and not defined as a mall is referred to as what?

The term that describes an opening connecting two or more stories, which is closed at the top and not defined as a mall, is an atrium. An atrium serves as a significant architectural feature that typically allows for natural light to enter and can be a space for social interaction within a building. Its design creates a vertical connection between floors, promoting visibility and accessibility across multiple levels.

Understanding this definition is crucial for commercial building inspectors, as they assess compliance with design and safety regulations in such spaces. The characteristics of an atrium, including its dimensions, materials, and fire safety provisions, can significantly affect the overall functionality and safety of a building, making it vital to differentiate it from other types of openings.

Other options pertain to different concepts; for instance, a scupper is an opening in a wall that allows for drainage, typically related to roof drainage systems. A direct access opening generally refers to access points for people or equipment between different spaces but lacks the vertical gallery aspect of an atrium. An emergency escape and rescue opening is specifically designed for life safety and is regulated for conditions that require safe egress, marking a distinct classification separate from the atrium concept.