Revolving doors, however, tend to be the best option for energy efficiency. Since the door is always closed, it helps control atmospheric pressure and environmental conditions inside a building, keeping drafts out. By controlling outside air, revolving doors can also help keep things more comfortable for those working inside the facility’s entrance (e.g. security personnel). Revolving doors are also commonly used in buildings where high security is necessary. Frequently found
in places such as federal office buildings or airport gate areas, these specialized assemblies help control traffic entering and exiting a facility.
Automatic revolving doors are manufactured as complete packages. Offered in four-, three-, and two-wing designs, there are many variations, but the diameter and number of wings depend on the amount of foot traffic in and out of the facility.
ANSI/BHMA A156.27, Standard for Power- and Manual-operated Revolving Pedestrian Doors, includes maximum allowable revolutions per minute for:
- manual revolving doors (Section 4);
- automatic revolving doors with a center shaft (Section 5); and
- automatic revolving doors with a core (Section 6).
These tables are reproduced in Figures 2 and 3 to demonstrate how energy savings can be obtained by revolving the doors are slower speeds. These tables offer an example of how pedestrian traffic flow, convenience, and energy savings are interrelated. (Energy savings could be obtained by operating the revolving door at slower speeds, but there would be trade-offs both in terms of pedestrian traffic flow and convenience.)
is a scanner to enter the door the same as an automatic door? At the moment it is very hard to enter with files in your hand or even in a trolley, as the door just closes on you. AND THE DOOR IS SO VERY HEAVY. I have a shoulder problem and I have been asking for a scanner but they say it can’t be done for FIRE DOORS. Please reply. Thank you. Kind Regards, AVERIL