Normal and Level 1 standby power shall be provided for elevator equipment, hoistway
lighting, machine room ventilation/cooling and elevator controller cooling equipment
Double-deck elevators serve two floors simultaneously, using the same hoistway
to get through many more people than a single deck lift, thus increasing capacity and saving space.
The major difficulty in existing homes is providing a clear shaft for the hoistway
. A shaft (approximately 45 inches wide and 52 inches long) must be opened through each level's floor frame.
In most cases, begin the evaluation by opening main-line power switches and checking for slack in the hoistway
ropes; a quick movement of the car could be dangerous with slack or broken suspension.
Electromechanical safety switches in the elevator hoistway
transmit signals to the electronic controller, which then calculates when the elevator cab should slow down, when the cab is level at each floor, and in which direction the cab should move.
A modular elevator is comprised of a steel hoistway
with the elevator car and components completely pre-wired and installed inside.
Instead, machine room-less (MRL) technology allows compact drive equipment to be installed directly into the hoistway
, cutting down on space requirements.
This is allowed if the facility installs smoke detectors in locations including: at each floor serviced by the elevator in the lobby or landing adjacent to the hoistway
doors; in the associated elevator machine room: and in the elevator hoistway
where sprinklers are located in the hoistway
220 Unity St., $295,000 for commercial alterations: modify elevator hoistway
, add EIFS siding, new exterior stairs, repair planter wall and cabinetry work in dental area.
No guidance is given in the ASME Code as to the practicality of keeping smoke from invading the hoistway
, whether by shaft pressurization or any other technique.
The Buildings Department has received 29 elevator-related complaints and issued 9 violations for elevator problems, including improper fuses and worn door gibs on hoistway