06-02-2019, 08:03 AM
Terms Relating to Planning and Design of Lifts
Door Closing Time (tc ) Time period measured from the instant that car doors start to close until the doors are locked.
Nominal Travel Time (NTT) The nominal travel time is defined as the time it would take to run a distance of the total travel at the rated speed of the lift without taking into account the acceleration and deceleration of the car or the intermediate stops of real runs.
Passenger Average Waiting Time (AWT) Average period of time from the instant a passenger registers a landing call or joins a queue, until the responding lift begins to open its doors at the boarding floor.
Round Trip Time (RTT) The average time taken by a single lift to make a trip from the main terminal back to the main terminal, starting from the time the car doors open at the main terminal until the car doors re-open at the main terminal after serving all demand along the way.
Handling Capacity (HC) The number of passengers that a lift system can theoretically transport during the up-peak traffic condition with car occupancy of 80 percent of the actual capacity expressed as a percent of the total building population.
TO read more ... http://frontdesk.co.in/building-services/vertical-transportation
Door Closing Time (tc ) Time period measured from the instant that car doors start to close until the doors are locked.
Nominal Travel Time (NTT) The nominal travel time is defined as the time it would take to run a distance of the total travel at the rated speed of the lift without taking into account the acceleration and deceleration of the car or the intermediate stops of real runs.
Passenger Average Waiting Time (AWT) Average period of time from the instant a passenger registers a landing call or joins a queue, until the responding lift begins to open its doors at the boarding floor.
Round Trip Time (RTT) The average time taken by a single lift to make a trip from the main terminal back to the main terminal, starting from the time the car doors open at the main terminal until the car doors re-open at the main terminal after serving all demand along the way.
Handling Capacity (HC) The number of passengers that a lift system can theoretically transport during the up-peak traffic condition with car occupancy of 80 percent of the actual capacity expressed as a percent of the total building population.
TO read more ... http://frontdesk.co.in/building-services/vertical-transportation