5.10.1 Electric Elevators Used for Construction
(a) Where the hoistway is adjacent to areas permitting passage of people (e.g., stairwells, floors, and work space exterior to the hoistway), it shall be fully enclosed. The enclosure shall be of sufficient strength to prevent contact between the enclosure material and the car or counterweight when the enclosure is subjected to a force of 890 N (200 lbf) applied at right angles at any point on an area 100 mm x 100 mm (4 in. x 4 in.). Openwork enclosures shall be permitted to be used on all but the entrance side of the hoistway and shall reject a ball 25 mm (1 in.) in diameter. Openwork enclosures shall be located to provide at least 150 mm (6 in.) clearance between the outside of the enclosure and the closest member of the car or counterweight assembly. Openwork enclosures shall not be used on elevators with car speeds over 1.75 m/s (350 ft/min).
(b) Overhead protection shall be provided across the entire cross-sectional area of the hoistway. It shall be located above the machine when the machine is located directly over the elevator, and shall be capable of sustaining a concentrated load of 1335 N (300 lbf) on any area 100 mm x 100 mm (4 in. x 4 in.).
(c) Where the elevator is operating in a multiple hoistway, and work is to be performed in an adjacent portion of that multiple hoistway, the construction elevator's hoistway shall be fully separated. The material used for this separation shall
(1) be as strong as or stronger than 1 mm (0.0437 in.) diameter wire
(2) have openings not exceeding 25 mm (1 in.)
(3) be supported and braced so that when subjected to a pressure of 4.79 kPa (100 lbf/ft2) applied horizontally at any point, the deflection shall not exceed 25 mm (1 in.)
(a) Hoisting of materials in any portion of the hoistway of an elevator used for construction is prohibited unless the car is not in use and is unoccupied.
(a) Counterweight guards shall be installed in the pit on all open sides of the counterweight runway, except as follows:
(1) Where compensating chains or ropes are attached to the counterweight, the guard shall be permitted to be omitted on the side facing the elevator car.
(b) The design, construction, and location of the guards shall conform to 18.104.22.168. Perforated material that will reject a ball 25 mm (1 in.) in diameter shall be permitted to be used.
Protection of spaces below hoistways not extending to the lowest level of the structure shall conform to the applicable requirements of Section 2.6, or the space below the hoistway shall be temporarily secured from occupancy with a fence or wall.
(a) Spaces containing machines, control equipment, sheaves, and other machinery shall be fully enclosed and protected from the elements. Enclosures shall be supported and braced to deflect not over 25 mm (1 in.) when subjected to a force of 450 N (100 lbf) applied horizontally over an area 100 mm x 100 mm (4 in. x 4 in.). The overhead protection of the machine room shall conform to 22.214.171.124.1(b). The floor of the machine room shall conform to 126.96.36.199.2.
(b) A safe means of access to the machine room and machinery spaces shall be provided for authorized personnel. Access doors shall be a minimum height of 1830 mm (72 in.) and shall be kept closed and locked.
(c) Temporary electric lighting shall be provided in the machine room and machinery spaces. The illumination shall be not less than 100 lx (10 fc) at the floor level.
(d) Machine rooms shall be maintained free of refuse and shall not be used for the storage of material unnecessary for the construction, maintenance, or operation of the elevator. Flammable liquids having a flash point less than 38°C (100°F) shall not be kept in the machine room.
(a) A metal, concrete, or wood floor shall be provided, except that floors are not required below the following:
(1) secondary and deflecting sheaves of traction-type machines located over the hoistway
(-a) means of access for inspecting and servicing of governors is provided
(-b) sheaves and other equipment (except governors) shall be permitted to be inspected and serviced from the top of the car or by other means
(b) The floor shall be located above, level with, or directly below the machine beams.
(c) Floors shall be designed to carry a minimum live load of 195 kg/m2 (40 lb/ft2).
(d) Floors shall be concrete, wood, or metal with or without perforations. Wood planking, when used, shall be scaffold grade or equivalent as recognized by approved grading rules for the species of wood used.
(e) The area to be covered by the floor shall conform to 188.8.131.52.
(b) Where temporary swinging solid hoistway doors are used, a vision panel covered with material that will reject a ball 25 mm (1 in.) in diameter and have a deflection not greater than any other part of the door shall be provided. The total area of the vision panel shall be not more than 0.016 m2 (25 in.2) and it shall be located between 1370 mm (54 in.) and 1675 mm (66 in.) above the floor level.
(a) For elevators with car speeds up to 1.75 m/s (350 ft/min), hoistway doors or gates shall be provided with means that will latch the doors or gates mechanically so that they cannot be opened from the landing side, conforming to 184.108.40.206.1. Means shall be provided at a designated landing for unlatching the hoistway door or gate from the landing side to permit access to the car. At this landing, positive means shall be provided to lock the elevator entrance out of service.
(c) The mechanical locking device, when used on temporary doors, shall be self-latching.
Permanent hoistway doors shall conform to 2.12.1. The electrical circuitry for hoistway door interlocks, or combination mechanical locks and electric contacts, does not have to be operational at this time unless the car speed is over 1.75 m/s (350 ft/min).
(a) The exit opening shall have an area of not less than 0.26 m2 (400 in.2) and shall measure not less than 400 mm (16 in.) on any side.
(b) The exit shall be located to provide a clear passageway unobstructed by fixed elevator equipment located in or on top of the car.
(c) The exit cover shall open outward and shall be hinged or otherwise attached to the car top and arranged so that the cover can be opened only from the top of the car. When opened, the cover shall not protrude beyond the perimeter of the car.
(d) Operation of the car with the top emergency exit open is prohibited, except as specified in (e).
(e) Operation of the car with the top emergency exit open is permissible only when the load cannot be carried totally within the car enclosure and the operation is under the direct supervision of authorized personnel. The car shall not be operated at a speed faster than 0.75 m/s (150 ft/min).