For stairways in single-family dwellings with an occupant load of less than 10, what is the minimum tread run?

For single-family dwellings with an occupant load of less than 10, the minimum tread run is established to ensure safety and comfort in stairway construction. Specifically, a tread run of 10 inches provides adequate space for the foot to land securely as individuals ascend or descend the stairs. This measurement is important because it balances the need for a safe walking surface while also accommodating the average size of an adult foot.

In addition, building codes often specify that a minimum tread run ensures that the stairs are not too steep and that individuals do not risk tripping or falling. Adhering to this regulation promotes safety in residential settings, particularly in homes with small occupant loads where ease of access is critical.

Understanding the correct minimum dimensions is essential for ensuring compliance with building codes and enhancing the overall safety of stairways within single-family dwellings.