ABSTRACT
Uppeak traffic design depends on how many passengers a lift can transport when it is serving the uppeak traffic condition. The procedure is the same regardless of whether the design is for a new or an existing lift. The design procedure is to match the number of arriving passengers with the handling capacity of the installed lift system. In the design of lift systems, the traditional design method is to derive the round trip time from various parameters. Two major parameters in the evaluation of the round trip time equation are the probable number of stops and the highest reversal floor. The uppeak lift system performance depends on the car loading, and for heavy percentage loads, such as above 90", average waiting times in excess of an interval time must be expected. The technique of using a lobby dwell time during intense uppeak traffic works well as it ensures lifts leave the main terminal substantially filled to full capacity.
