What is the minimum width that stairways should be at all points above the height of the handrail?

The minimum width for stairways above the height of the handrail is set to ensure safe and functional use, especially in emergency situations. A width of 36 inches is commonly specified in building codes to provide adequate space for individuals to ascend and descend comfortably, as well as to allow for the easy passage of items and in some cases, for people to pass each other.

This dimension is particularly critical in residential and commercial buildings where stairways may be a primary means of accessing different levels. A width of 36 inches provides a balance between safety and practical space usage, accommodating the majority of people without feeling cramped. Furthermore, it facilitates compliance with accessibility standards that apply to a variety of structures, ensuring that stairways support safe egress during emergencies.

Wider options, such as 42 or 48 inches, may exceed the requirements for typical residential staircases and are generally unnecessary unless specified for particular buildings with unique requirements.