In a residential occupancy where the tread depth is less than 11", what is the MINIMUM nosing protrusion?

In residential construction, building codes set standards for safety and accessibility, particularly concerning stairs. When the tread depth is less than 11 inches, the minimum nosing protrusion is regulated to ensure that the stair is safe for use.

A nosing protrusion is the part of the tread that extends beyond the riser. It plays a key role in preventing slips and falls by providing a clear edge for users to see and step onto. The required minimum nosing protrusion of ¾ inch is established in the building codes to balance safety while maintaining different design preferences and practical aesthetics in staircase construction.

By having a nosing protrusion of at least ¾ inch, it ensures that the user has enough surface to step on, even if the tread is shorter than the standard dimensions. If the nosing were to be less than this amount, it would not provide the adequate footing necessary, especially for those who may have difficulty navigating stairs.

This standard reflects industry best practices for safety in stair design within residential settings, providing a clear guideline for contractors and builders to follow.