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Chairlift Capacity: Headway and Circulation

Calculate chairlift throughput from departure intervals or active chair count and circuit time, with separate occupancy and operating-time adjustments.

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Inputs that matter
Departure interval (seconds), Seats per chair, Average occupied seats (%), Scheduled hour operating (%), and 3 more
Output to expect
Observed departure interval, Circulation and chair count
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Departure flow

Divide 3,600 seconds by the interval between successive departing chairs, then multiply by seats per chair. With evenly spaced chairs, the interval is full circuit time divided by the entire active fleet.

Observed operation

Apply average occupied-seat percentage and scheduled operating percentage separately. The result is an average flow estimate, not a certified rating, wait time or personal vertical mileage.

Updated: September 2026

FAQ

No. Many chairs circulate simultaneously. Divide full circuit time by the total active chair count to obtain average departure interval under steady, evenly spaced operation.

Use running-time headway and record stoppages with operating percentage. Do not include the same stoppage in both inputs.

Save lift case explicitly saves a local history entry. Copy Markdown Report retains inputs and notes; Download CSV exports the result breakdown. Keep important records separately from browser storage.

About Chairlift Capacity: Headway and Circulation

Calculate chairlift throughput from departure intervals or active chair count and circuit time, with separate occupancy and operating-time adjustments.