R 408.10561 Installations.

Rule 561. (1) A powered platform installed, or that part of a powered platform modified, after August 27, 1971, shall be in compliance with the design and manufacturing requirements prescribed in ANSI A120.1, “Safety Requirements for Powered Platforms for Exterior Building Maintenance,” 1970 edition, as adopted in R 408.10509, and as further prescribed in the rules of this standard. (2) The following requirements apply to affected parts of buildings that utilize working platforms for building maintenance: (a) Structural supports, tie-downs, tie-in guides, anchoring devices, and any affected parts of the building that are included in the installation shall be designed by, or under the direction of, a registered professional engineer who is experienced in such design. (b) Exterior installations shall be capable of withstanding prevailing climatic conditions. (c) The building installation shall provide safe access to, and egress from, the equipment and shall provide sufficient space to conduct necessary maintenance of the equipment. (d) The affected parts of the building shall have the capability of sustaining all of the loads imposed by the equipment. (e) The affected parts of the building shall be designed to allow the equipment to be used without exposing employees to a hazardous condition. (3) The exterior of each building shall be provided with tie-in guides unless the conditions specified in either of the following provisions are met: (a) Tie-in guides required pursuant to this rule may be eliminated for not more than 75 feet (22.9 m) of the uppermost elevation of the building if angulated roping is employed, if the use of tie-in guides is not feasible due to the exterior building design, and if an angulation force of not less than 10 pounds (44.4 n) is maintained under all conditions of loading. (b) Tie-in guides may be eliminated if 1 of the specified guide systems is provided as specified in R 408.10562 and R 408.10563.