2.14.4 Passenger and Freight Car Doors and Gates, General Requirements
(c) when a bypass switch is activated (see 126.96.36.199)
(a) meet the requirements of 188.8.131.52.1
(c) be maintained in the open position by the action of gravity or by a restrained compression spring, or by both, or by positive mechanical means
(d) be designed or located so that they shall not be accessible from within the car
(e) not use mercury tube switches
(a) meet the requirements of 184.108.40.206.2
(d) be tamper resistant so that they cannot be made ineffective from within the car
(1) when the car is within the unlocking zone for that entrance
(2) under the conditions specified in 220.127.116.11.3
(c) hold the car door in the locked position by means of gravity or by a restrained compression spring, or by both, or by means of a positive linkage
(d) be located so that they are not accessible from within the car when the car doors are closed
(e) be designed in accordance with 18.104.22.168
(d) on freight elevators that are equipped with horizontally swinging doors and that are not accessible to the general public (i.e., located in factories, warehouses, garages, and similar buildings), the distance specified in (a) through (c) shall be not more than 165 mm (6.5 in.)
(a) where a multisection car door and multisection hoistway door are used, or where one of these doors is multisection and the other is single section, between the sections of the car door and the hoistway door nearest to each other
Where a swing-type hoistway door and car gate or folding door are used, the gate or folding door shall not deflect more than 13 mm (0.5 in.) when subjected to a force of 335 N (75 lbf) when applied to the hoistway side of the car gate or folding door at the following locations:
(b) an area 100 mm (4 in.) square at right angles at 25% and 75% of the door width at a height of 450 mm (18 in.) from the floor level
For individual panels of folding doors of a width less than 100 mm (4 in.), the specified forces in (a) and (b) shall be applied over an area 100 mm (4 in.) tall by the width of the individual panel.
The bottom of the guides or other restraining means shall be constructed to retain the weights if the weight suspension means breaks.
Suspension members of vertically sliding car doors or gates, and of weights used with car doors or gates, shall have a factor of safety not less than 5. At least two independent suspension means shall be provided so that the failure of one suspension means shall not permit the car doors or gates to fall; or a safety device shall be provided to prevent the doors or gates from falling if the suspension means fails.
(a) for horizontally sliding doors or gates, when the clear open space between the leading edge of the door or gate and the nearest face of the jamb does not exceed 50 mm (2 in.) except where car doors are provided with a car door interlock(s), 30 mm (1.25 in.)
(c) for horizontally sliding center-opening doors or vertically sliding biparting counterbalanced doors, when the door panels are within 50 mm (2 in.) of contact with each other except where horizontally sliding center-opening car doors are provided with a car door interlock(s), 30 mm (1.25 in.)