The outside diameter of handrails and handholds shall be not less than 11/4 inches (32 mm) and not greater than 2 inches (51 mm).
Ladder treads shall have a horizontal uniform depth of not less than 4 inches (102 mm).
Risers shall be of a uniform height not less than 7 inches (178 mm) and not greater than 12 inches (305 mm). The vertical distance from the platform or top of the pool structure to the uppermost tread shall be uniform with other riser heights.
Exception: The height of the bottom riser shall be permitted to vary from the other risers.
The top step of a staircase ladder shall be flush with the deck or between 7 inches (178 mm) to 12 inches (305 mm) below the deck level.
Steps shall have a minimum unobstructed width of 19 inches (483 mm) between the side rails.