What Is a Revolving Door?
Revolving doors are two or four doors mounted on a revolving shaft.
Revolving doors were originally developed in cold regions of Europe as doors to prevent the warm air of heating from escaping; when configured with four doors, revolving doors are designed to move through four spaces, with people walking through the moving spaces to enter the interior of the building.
They can be automatic or manual and must be lightweight for safety. There is a risk of pinching people, and automatic types are equipped with protective devices, such as anti-pinching. The direction of rotation is counterclockwise in most of the world, which is said to be related to the fact that cars in European countries that have adopted revolving doors drive on the right side of the road.
Uses of Revolving Doors
Revolving doors are often used in large commercial facilities with a lot of people entering and exiting, and in high-rise buildings.
Revolving doors are effective in improving the efficiency of air conditioning in large spaces, as they are always closed off from the outside air.
Their main safety factors are as follows:
- A separate revolving door should be provided for children, the elderly, and people with disabilities.
- Multiple safety measures, such as preventing being caught in between doors, should be provided.
- The door must rotate at a maximum speed of 65 cm/second or less around the perimeter.