http://www.hortondoors.com/SiteCollectionDocuments/HortonRevolvingDoors2010.pdf
7.2.1.10 Revolving Doors.
7.2.1.10.1 Revolving doors, whether used or not used in the means of egress, shall comply with the following:
(1) Revolving doors shall be capable of being collapsed into a book-fold position, unless they are existing revolving doors approved by the authority having jurisdiction.
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