According to step design guidelines, what is the required minimum tread depth?

The required minimum tread depth in step design is 11 inches, as specified by various building codes and design guidelines. This dimension ensures that there is sufficient space for foot placement, providing safety and comfort for users as they ascend or descend the stairs. A tread depth of 11 inches allows for a stable step, accommodating the average foot size while reducing the risk of slipping or misstepping.

This standard is widely accepted in architectural and landscape design to promote accessibility and usability of stairs, thereby enhancing the overall functionality of the built environment. Adhering to this guideline is crucial for compliance with safety regulations and for creating user-friendly spaces in public and private settings.