![]() ![]() (ii) be sufficiently secured in place to ensure the stability of the ladder during access to or egress from the upper landing, and (i) project approximately 1 m (3 ft) above the upper landing, and (b) if the ladder provides access to or egress from an upper landing, (a) as shown in Figure 13-1, be positioned so that the ladder is leaning against the vertical plane of support at an approximate angle of 75° when measured from the horizontal plane of support, (2) A portable non-self-supporting ladder must, (b) be of sufficient length to enable the safe performance of the work activity while being used. (a) be placed on a firm and level surface, and "work platform" means an elevated or suspended temporary work surface used for supporting workers and includes a scaffold and boatswain's chair. "swing stage" means a work platform that is raised and lowered by manual or powered hoisting equipment, supported by 2 or more suspension lines ![]() "self-propelled" means the capability of an elevating work platform to travel under power with the primary controls on the work platform "scaffold" means any temporary elevated work platform and its supporting structure used for supporting workers, materials or equipment (b) is not permanently installed on or attached to a building or structure "portable powered platform" means a movable work platform that (b) is permanently installed on or attached to a building or structure (a) is raised or lowered by other than manual means, and "permanent powered platform" means a movable work platform that "movable work platform" means a work platform that can be re-positioned during the course of the work "elevating work platform" means a movable work platform that self-elevates to overhead work locations "boatswain's chair", also known as a bosun's chair, means a seat attached to a suspended rope designed to accommodate one person in a sitting position 33)."boom-supported" means supported by an elevating device that telescopes, articulates, rotates or extends relative to the machine base or vehicle, so that the platform can be positioned completely beyond the base Renumbering and amendment of former Section 1663 to Section 1665 filed 7-24-87 operative 8-23-87 (Register 87, No. NOTE: Authority cited: Section 142.3, Labor Code. Wire rope shall not be wrapped around either member. The shackle shall be secured by means of a stop bolt 4 inches from the end of the beam or ledger. (e) When a hanging scaffold is supported by means of wire rope, it shall be attached with a thimble to a 1/2-inch shackle or bolt of not less than 1/2-inch diameter. (d) Steel tube and coupler members may be used for hanging scaffolds with both types of scaffold designed to sustain a uniform distributed working load up to heavy duty scaffold loads with a safety factor of four. (2) Planking 2 x 10 inches, with maximum span 7 feet for heavy duty and 10 feet for light duty or medium duty. (1) Supporting ledgers 2 x 10 inches on edge (c) For hanging wood scaffolds, the following minimum nominal size material shall be used: (b) The suspension rope shall be wrapped at least twice around the supporting members and twice around the ledgers of the scaffold, with each end of the wire rope secured by at least three standard wire-rope clips properly installed. (a) An interior hung scaffold shall be hung or suspended from the roof structure or ceiling beams.
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