(ingress / egress) points shall approximate 1.2 sm (13 sf) per person, leaving
inter-person spacing of approximately 1.22 m (4 ft).
Informal Queuing. Informal, unorganized queuing in service areas
shall be no less than 0.93 sm (10 sf) per person.
Ordered Queuing. Queuing in ordered queue areas, such as lines at
outpatient pharmacy windows and in elevator lobbies, shall be not less than
0.65 sm (7 sf) per person.
Ramps. Avoid the use of ramps. If ramps must be used, the
maximum slope shall be less than 1:20, and the ramp must comply with the
applicable sections of the Americans with Disabilities Act Accessibility
Guidelines (ADAAG). See Section 12 of this Military Handbook for additional
Elevator and Escalator Planning Factors.
The populations to be considered for each building
type are as follows:
Staff. Determine staff populations for each area within a given
facility by actual number, not by Full Time Equivalent FTE (i.e., two 20 hour
per week employees are equal to two staffers, not one FTE).
Patient. Patient populations include all persons receiving
treatment at the facility. They are categorized as inpatient when they occupy
an inpatient bed overnight, and as outpatient when treatment does not require
an overnight stay.
Visitors. Calculate visitor populations from data supplied by the
facility. Visitors shall include all persons not accounted for as staff or as
patients, including but not limited to:
Persons visiting inpatients and accompanying outpatients.
Persons who are picking up or dropping off specimens,
pharmaceuticals, records or X- rays.
d. Students, outside maintenance people and others as applicable to the
facility in question.
Traffic Patterns, Migration. Review each facility for general
circulation and right-of-way. Where pedestrians have the option of using more
than one elevator group, increase the elevator population predicted for each
individual group by a migration factor of at least 10 percent. Consider
greater factors for elevators in close proximity to cafeterias, main
ingress/egress areas, etc. The design must also consider migration of staff,
visitors and patient vehicular traffic to service cars. A factor of at least
10% of the staff should be considered in the service elevator car handling
Elevator Traffic Study and Analysis ETSA. Prepare the Elevator
Traffic Study and Analysis to determine the appropriate types, locations,
sizes, speeds and groupings of elevators. For facilities less than 4,640 gross
square meters (50,000 GSF), an elevator traffic study and analysis may not be
required. Determine the loading density and the load-unload time for each