R 408.10567 Davits.

Rule 567. (1) Every davit installation, whether fixed or portable or rotatable or non-rotatable, shall be designed and installed to ensure that it has a stability factor against overturning of not less than 4. (2) Both of the following requirements apply to roof-rigged davit systems: (a) Access to and egress from the working platform shall be from a safe surface. Access or egress shall not require a person to climb over a building's parapet or guard railing. (b) The working platform shall be provided with wheels, casters, or a carriage for traversing horizontally. (3) Both of the following requirements apply to ground-rigged davit systems: (a) The point of suspension shall not be more than 300 feet (91.5 m) above a safe surface. A guide system or systems shall be provided and shall be in compliance with the requirements of R 408.10561 and R 408.10562. (b) Access and egress to and from the working platform shall only be from a safe surface that is below the point of suspension. (4) A rotating davit shall not require a horizontal force of more than 40 pounds (177.9 n) per person to initiate a rotating movement. (5) All of the following requirements apply to portable davits: (a) A davit or part of a davit that weighs more than 80 pounds (36 kg) shall be provided with a means for its transport, which shall keep the center of gravity of the davit at or below 36 inches (914 mm) above the safe surface during transport. (b) A davit shall be provided with a pivoting socket or with a base that will allow the insertion or removal of a davit at a position of not more than 35 degrees above the horizontal, with the complete davit inboard of the building face being serviced. (c) Means shall be provided to lock the davit to its socket or base before it is used to suspend the platform.