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Elevator Traffic Calculations
Round trip time calculations

The majority of elevator designs are developed from Up Peak Round Trip Time calculations as described in the following publications:- CIBSE Guide D: Transportation Systems in Building Elevator Traffic Handbook, Theory and Practice. Gina Barney The Vertical Transportation Handbook. George Strakosch

Traditionally these calculations have formed the basis of establishing the Handling Capacity of an elevator system.

Modern Installations with more complex elevator arrangements have led to the development of more specific formulae such as the General Analysis calculation.

Subsequently this has been extended for Double Deck elevators.

Simulation

Elevator traffic simulation software can be used to model complex traffic patterns and elevator arrangements that cannot necessarily be analysed by RTT calculations.

Lift traffic patterns

There are four main types of elevator traffic patterns that can be observed in most modern office installations. They are up peak traffic, down peak traffic, lunch time (two way) traffic and interfloor traffic.