Determining the direction in which a door opens, described as its ‘swing,’ is a fundamental aspect of architectural design and building maintenance. It defines whether a door opens inward or outward, and whether it hinges on the right or left when viewed from a specific vantage point. For example, a door might open into a room, swinging to the right when someone is standing outside the room facing the door.
Accurately identifying a door’s swing is crucial for several reasons. It impacts traffic flow within a space, ensures compliance with safety regulations (particularly egress requirements), and influences the placement of furniture and fixtures. Historically, the direction of a door’s opening was often dictated by convention or practical considerations, such as optimizing usable space or providing improved security. Now, the direction in which a door operates can also affect ease of use for individuals with disabilities.