R 408.42154 Runway and ramp specifications.

Rule 2154. (1) A ramp or runway that is used exclusively by employees as a means of access to or egress from a walking or working surface shall comply with all of the following provisions: (a) Be capable of supporting not less than 2 times the maximum intended load. (b) Consist of a minimum of two 2-inch by 10-inch nominal size planks placed side by side or other material of equal width that provides equivalent strength if guardrails are not required. (c) Consist of a minimum of three 2-inch by 10-inch nominal size planks placed side by side or other material of equal width that provides equivalent strength if guardrails are required. (d) Not be constructed steeper than the ratio of 1 foot of vertical rise to 2 feet (0.6 m) of horizontal run. (e) Have a slip-resistant surface or have cleats that are not more than 2 inches by 4 inches nominal size and which are uniformly spaced not more than 24 inches (61 cm) apart. (f) Be constructed to avoid excessive deflection and springing action. (g) Be secured at each end to prevent displacement. (h) Not be used for the storage of materials or equipment. (i) Be maintained free of debris, other loose materials, and slip or trip hazards. (2) A ramp or runway used by employees with wheelbarrows shall comply with both of the following provisions: (a) Be constructed and used as prescribed in subrule (1)(a), (d), (e), (f), (g), (h), and (i) of this rule. (b) Consist of three 2-inch by 10-inch nominal size planks placed side by side or other material of equal width that provides equivalent strength. (3) A ramp or runway used by concrete buggies, forklift trucks, or other motorized material handling equipment shall comply with all of the following provisions: (a) Be capable of supporting not less than 4 times the maximum intended load. (b) Be not less than 5 feet (1.5 m) wide. (c) Be constructed and used as prescribed in subrule (1)(a), (d), (f), (g), (h), and (i) of this rule. (4) A ramp or runway constructed of 2 or more planks placed side by side shall have the planks securely fastened together.