Scenario: A mobile ladder stand platform with steps will be constructed to access multiple CNC machine tables at a height of 40 inches measured from the floor.
Question 1: What are the rise height, tread depth, and width requirements of mobile ladder stand platform steps?
Response: The requirements for mobile ladder stand platforms are contained in 29 CFR § 1910.23(e), Mobile Ladder Stands and Mobile Ladder Stand Platforms in addition to requirements specified in paragraph (b) of this section which covers all ladders. Specifically, § 1910.23(e)(1)(i) requires that the mobile ladder stands and platforms have “a step width of at least 16 inches (41 cm).” Additionally, § 1910.23(e)(3)(i) requires the steps of mobile ladder stand platforms meet the requirements contained in § 1910.23(e)(2)(i) which states, “(s)teps are uniformly spaced and arranged, with a rise of not more than 10 inches (25 cm) and a depth of not less than 7 inches (18 cm). The slope of the step stringer to which the steps are attached must not be more than 60 degrees, measured from the horizontal.”
Question 2: Does the landing area need to be 30 inches in the direction of travel?