2.2.4 Pit Access
(a) the force(s) required to extend a retractable ladder from the fully retracted position to the extended and mechanically secured position shall not exceed 220 N (50 lbf)
(b) after being extended and mechanically secured, a retractable ladder shall remain secured in the extended position when subjected to a horizontal force not to exceed 2220 N (500 lbf)
(c) the force(s) required to retract a retractable ladder from its extended position to its fully retracted position, after being unsecured, shall not exceed 220 N (50 lbf)
(d) the ladder shall be mechanically secured when in the retracted position
(a) If the door swings into the pit, it shall be located so that it does not interfere with moving equipment.
(b) if the door swings out, and the lowest structural or mechanical part, equipment, or device installed beneath the car platform, except guide shoes or rollers or safety jaw assemblies, projects below the top of the separate pit access door opening when the car is level with the bottom terminal landing
(2) the door shall be provided with a vision panel(s) glazed with clear wired glass not less than 6 mm (0.25 in.) thick, will reject a ball 150 mm (6 in.) in diameter, and has an area of not more than 0.03 m2 (47 in.2)
(c) The door shall provide a minimum opening of 750 mm (29.5 in.) in width and 1825 mm (72 in.) in height.
(e) The door shall be self-closing and provided with a spring-type lock arranged to permit the door to be opened from inside the pit without a key. Such doors shall be kept closed and locked. A key shall be required to unlock the lock from outside the hoistway. The key shall be Group 1 Security (see Section 8.1).
(a) when no pit ladder is provided, not more than 1825 mm (72 in.) vertically above the pit floor, or
(b) when a pit ladder is provided, not more than 1825 mm (72 in.) vertically above a rung, cleat, or step. The minimum distance from the top rung, cleat, or step to the top of the pit ladder or handhold shall not be less than 1200 mm (48 in.) (see 184.108.40.206.1 and Nonmandatory Appendix J, Figure J-1), and
(c) with the door in the closed position, in a plane not more than 1000 mm (39 in.) horizontally from a rung, cleat, or step of the pit ladder (see Nonmandatory Appendix J, Figure J-1).