What is the maximum permissible distance between landings on a staircase according to the standard?

The maximum permissible distance between landings on a staircase is established primarily for safety reasons, to ensure that individuals can safely navigate the stairs without undue fatigue or risk of losing their balance. A spacing of 3.6 meters between landings aligns with building codes designed to enhance accessibility and provide proper egress in the event of an emergency.

This distance is significant in providing enough space for users to comfortably rest when ascending or descending a staircase, especially in public and commercial buildings where high traffic is expected. Longer distances could pose safety hazards, particularly for those with mobility challenges or in situations where quick exits are necessary.

Other options, while they may seem reasonable, do not meet the safety standards typically outlined in building regulations, which prioritize the wellbeing and accessibility of all individuals using the staircase. Thus, 3.6 meters strikes the right balance between functionality and safety.