Applies to material hoists, personnel hoists and elevators used in construction. The employer follows the manufacturer's specifications and limits, or where none exist, limits fixed by a competent professional engineer. Rated capacities, recommended speeds and special hazard warnings are posted on cars and platforms. Wire rope is retired on any of: six broken wires scattered at random within a single lay, or three within one strand of a single lay; wear, scrubbing, flattening or peening taking off more than one-third of the outer wire diameter; heat damage from a torch or electrical contact damage; or diameter loss beyond 3/64 inch (up to 3/4 inch rope), 1/16 inch (7/8 to 1 1/8 inch) or 3/32 inch (1 1/4 through 1 1/2 inch). Ropes are installed per the rope maker's recommendations; live booms on hoists and endless belt manlifts are prohibited. Material hoists: operating rules, including the signal system and permitted line speeds for loads, posted at the operator station, with notices on the car frame or crosshead including No Riders Allowed; nobody rides except for inspection and maintenance. Hoistway entrances have latching gates or bars across the full width, striped in contrasting colours; bars are at least 2 by 4 inch wood or equal, set 2 feet back from the hoistway line and 36 to 42 inches high. The cage or platform top and the operator station carry overhead protection such as 2-inch planks or 3/4-inch plywood or equal. Enclosed towers are screened full height in No. 18 gauge wire of 1/2-inch mesh; unenclosed towers need the car caged full height in No. 14 gauge, 1/2-inch mesh and a 6-foot enclosure on unused ground-level sides. Car arresting devices must work on rope failure, towers are designed by a licensed professional engineer, and hoists conform to ANSI A10.5-1969. Personnel hoists: outside towers enclosed full height on entry and exit sides and to at least 10 feet elsewhere at the bottom landing and next to floors or scaffolds; inside towers enclosed on all four sides full height; towers tied to the structure at no more than 25-foot intervals plus guys, or guyed with wire rope of at least 1/2 inch where tie-ins are impractical. Hoistway doors at least 6 feet 6 inches high, locked so they open only from the car; cars fully enclosed with full-size gates and electric contacts that stop movement when open; overhead cover; safeties able to stop and hold the loaded car at governor tripping speed; capacity and data plate; no direct-drive internal combustion engines; normal and final terminal stops; an in-car emergency switch marked Stop. At least three ropes on traction hoists and two on drum hoists, minimum 1/2-inch diameter, with safety factors from 7.60 at 50 feet per minute rising to 10.70 at 600 feet per minute. After erection and before service, and after major alteration, all functions and safety devices are inspected and tested under a competent person, and all hoists are inspected and tested at intervals of 3 months or less, with a certification record of the date, the tester's signature and the hoist's serial number or identifier; the latest record is kept on file. Hoists meet ANSI A10.4-1963 (not cantilever hoists). Bridge tower hoists need a registered professional engineer's approval and erection supervised by a qualified engineer, are caged in No. 14 gauge, 3/4-inch mesh when the tower is open, inspected and maintained weekly and after winds above 35 miles per hour, with their own rope retirement criteria including standing rope limits. Permanent elevators in the employer's care and used by employees must meet ANSI A17.1-1965 with its addenda and be inspected under A17.2-1960 with its addenda.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.