Bordessen

Bordessen are the horizontal platforms between flights of stairs in a building. They function as resting and transition points, allowing people to pause, change direction, or continue to the next flight. Bordessen can be located at intermediate levels as well as at the top or bottom of a staircase, and they often accommodate doors or openings that lead to adjacent spaces.

In construction, bordessen are designed as part of the stair geometry and are bounded by walls or balustrades for safety. They can be made from various materials, including concrete, brick, timber, or metal, with finished surfaces such as tile, wood, or carpet. The size and shape of a bordes are influenced by the overall stair design, building codes, and accessibility requirements. A typical bordes is wide enough to allow for comfortable passage and, in multi-story buildings, may include a landing to facilitate turning between flights.

Safety and accessibility are central considerations for bordessen. Guardrails or balustrades are commonly installed on all open sides, and surfaces are often designed to be slip-resistant. Building codes specify minimum dimensions for landings to ensure safe use, with requirements that can vary by jurisdiction and use case.

In architectural practice, bordessen contribute to the rhythm and flow of stairways, affecting circulation, space perception, and occupant safety. They are a standard element in both historic and modern stair design, serving practical needs while influencing the aesthetic character of a staircase.