Has anyone of experience in including a fitness center m to an office building.
One of the tenants of our Project will be a fittness center. All fit outs will be done by the tenants. The owner will only be responsable for the core & shell.

Has anyone experiency to calculate the occupancy of a fitness center.

There are three aspects I identfied:
1. Peak occupancy
Peak occupancy can be defined by ASHRAE 62.1 table 6.1

2. Avarage occupancy
The center will not allways be fully occupied over the whole day. Has anyone an idea about a realistic percentage (e.g. 60%)?

3. Avarage abode time of an user
A visitor of a fittness center is supposed to stay only for a short time (e.g. 1-2 hours). Every visitor is expected to use the shower and mayby WC or Urinal. Has anyone an idea about realistic adobe time of visitors.

My general approach is:
#Daily visitors = (peak occupancy x avarage occupancy) x (abode time / opening hours)

Thank you very much.