According to PD 1096, what is the standard minimum depth of a stair tread?

The standard minimum depth of a stair tread, as stipulated by PD 1096, is 250 mm. This dimension is critical for ensuring safety and comfort when using stairs. A tread depth of 250 mm allows for adequate foot placement, helping to reduce the risk of missteps or slips. It strikes a balance between being deep enough for most shoe sizes while also accommodating a natural gait in ascending or descending.

Standards like these are important in building codes to promote safe construction practices, particularly in public and commercial buildings where traffic might be higher. Understanding these specifications is essential for architects, builders, and safety inspectors to ensure that stairways are designed in a way that minimizes hazards for users.