Which corridor system offers stair access from both ends?

A double-loaded corridor system is designed to have rooms or spaces on both sides of the corridor, allowing for efficient use of space while providing accessibility. In this layout, the corridor serves as a central spine, typically running the length of the building and providing access to rooms from both sides. This configuration often includes stair access at both ends of the corridor, facilitating vertical circulation and enhancing the movement throughout the building.

This arrangement is particularly common in multi-story buildings, such as apartments or hotels, where it maximizes usable square footage while ensuring that residents or guests can easily access stairs for egress or travel to different floors. The effective placement of stairs at both ends improves the building's overall accessibility and can promote better safety measures during emergencies since occupants can reach a stairway quickly regardless of where they are located along the corridor.