Storey : 25 floors
Floor to floor height : 4 meters
Net floor area : 60,000 m2
population density : 1 pax/ 30 m²
Assume that 17% of the total population are using the liftduring 5 min peak time. Based on the information in Table Q3(i),Table Q3(ii), Table Q3(iii), and Table Q3(iv) estimate the:
(i) Flow rate
(ii) Minimum handling capacity, waiting time, and number oflifts
(iii) Travel distance
(iv) Quality of the lift services in terms of intervals andwaiting time.
(v) Briefly discuss what will happen if the total populationusing the lift during 5 min peak time increases to 35% and suggestwhat actions should be taken to make the passengers satisfied withthe lift traffic system?
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TABLE Q3 (ii)
TABLE Q3 (iii)
\begin{tabular}{|c|c|} \hline Quality of service & RATING \\ (WAITING INTERVAL) & Excellent \\ \hline 20−25 Seconds & Good \\ 30−35 Seconds & Fair \\ 35−40 Seconds & Poor \\ 40−45 Seconds & unsatisfactory \\ over 45 Seconds & RAIN \\ \hline \end{tabular}