ABSTRACT
The standard traffic design uses the pure uppeak calculation, i.e., with only an up flow of passengers, to determine the likely performance of a lift system. In the derivations of the highest reversal floor (H) and the expected number of stops (S), it was assumed all floors held equal attraction for calls originating at the main terminal. The unequal populations will make the round trip time (RTT) smaller as the dominant term containing S is always smaller. A more accurate way to determine the effect of both interfloor flight time variations and uneven interfloor distances is to calculate the average jump for an average floor height. This chapter discusses a number of assumptions in the derivations of the RTT expression. The General Analysis Method combines all the assumptions into an improved mathematical model, allowing not only pure uppeak to be analysed, but also uppeak traffic with other concurrent traffic demands, and other peak traffic conditions, such as midday traffic.
