Estimate the passenger and service elevator count for an office building. The tool applies the
area-based rule of thumb, then checks it with a simplified traffic analysis (handling capacity and interval).
It is a concept-stage planning tool. Confirm the result with a vertical transport consultant before fixing the core.
Elevator sizing result
Metric
Low
Recommended
High
Method: (1) area rule of one passenger car per 25,000–35,000 sq ft (about 2,300–3,250 m²) of gross office area;
(2) service cars at roughly one per 6–10 passenger cars, minimum one, which may double as the firefighters' elevator
where required; (3) the recommended count is the smallest number of cars per group that meets both the handling-capacity
and interval targets, and is never below the low end of the area rule. The traffic model assumes up-peak traffic,
equal floor populations, rated-load factor of 80% and typical door and passenger-transfer times.
Firefighter access, accessibility and one-car-out-of-service checks are not included.