Requirements in this standard apply to power operated revolving type doors which rotate automatically when approached by pedestrians@ some small vehicular use@ and manual revolving type doors for pedestrians. Included are provisions to reduce the chance of user injury and entrapment. Where this standard contains specifications relating to maximum and minimum dimensions of various components of revolving doors for pedestrian use and some small vehicular traffic@ such dimensions are included to provide user protection for what are in the industry@ standard application conditions. This standard does not attempt to assess any factors that exist with respect to custom installations. Enclosure sizes shown in the charts are considered by the industry to be standard and practical to meet the majority of the market needs and are shown as a guide to installers@ service providers@ owners and architects. Deviation from enclosure sizes shown does not constitute non-compliance if the door complies with all requirements in the standard. Tests described in this standard are performed under laboratory conditions. Measurements shall be taken under neutral air pressure conditions. In actual usage@ results vary because of installation@ maintenance and environmental conditions.