R 408.41233 Two-point adjustable suspension scaffold; swing stage scaffold.

Rule 1233. (1) A 2-point adjustable suspension scaffold, also known as a swing stage scaffold platform, shall not be less than 20 inches nor more than 36 inches wide overall. The platform shall be securely fastened to the stirrups by U-bolts or by other equivalent means. (2) The stirrups shall be designed with a support for a guardrail, intermediate rails, and toeboard. (3) Rope and blocks that are used to support a 2-point adjustable scaffold shall have all of the following: (a) Supporting ropes of 3/4-inch, first-quality manila rope or a synthetic rope of equivalent strength used with at least one 6-inch single and one 6-inch double block. (b) Blocks that have sheaves which fit the size of the rope the blocks carry. (c) Live ropes made fast to the scaffold in a manner to prevent displacement. (d) The dead-end of the supporting rope connected to the block at the stirrup by means of an eye splice incorporating a thimble. (4) A swing stage scaffold shall be limited to the following number of employees: (a) For a scaffold designed for a working load of 500 pounds, not more than 2 employees shall be permitted to work at 1 time. (b) For a scaffold designed for a working load of 750 pounds, not more than 3 employees shall be permitted to work at 1 time. (5) Two or more scaffolds shall not be combined by bridging with planks or similar connecting links. (6) Rollers or fenders shall be provided to prevent striking the building and to facilitate raising and lowering. (7) The platform of a swing stage scaffold shall be 1 of the following types: (a) Ladder-type platforms - The ladder-type platform shall be constructed to meet ANSI standard A10.8 “Scaffolding Safety Requirements,” 1977 edition, as adopted in R 408.41201. (b) Plank-type platform - The plank-type platform shall be composed of not less than two 2 by 10-inch unspliced planks which are laid straight and which are cleated together on the underside, with the cleats starting 6 inches from each end and spaced at 12-inch intervals. (c) Beam-type platform - The beam platform shall have side stringers made of lumber that is not less than 2 by 6 inches set on edge. The span between hangers shall not be more than 12 feet. The flooring shall be supported on 2 by 6-inch crossbeams which are laid flat, which are set into the upper edge of the stringers with a snug fit at intervals of not more than 4 feet center to center, and which are securely nailed in place. The flooring shall be 1 by 6-inch lumber or 3/4-inch plywood and shall be securely nailed. Floorboards shall not be spaced more than 1/2 of an inch apart. (d) Manufactured picks - When used, a manufactured pick shall conform to the requirements of R 408.41217(2) and (3).