Question: Are stairs installed after January 17, 2017, that have an angle of 50 degrees considered to be ships stairs?

Answer:

The final rule defines ship stairs as “a stairway that is equipped with treads, stair rails, and open risers, and has a slope of 50 to 70 degrees.” Ship stairs must also comply with §1910.25(b) and (e), such as a minimum tread depth of 4 inches, a minimum tread width of 18 inches, and a vertical clearance above any stair tread to any overhead obstruction of at least 6 feet 8 inches.