Bob Augustine Archives - Construction Canada

Revolving Doors 101: Specifying a more energy-efficient, secure opening

(05/01/2012)

Revolving doors have been manufactured for over a century. Theophilus Van Kannel was granted U.S. patent 387,571 on August 7, 1888 for a “Storm-door Structure” that was a three-partition revolving door. Since then, their...

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Revolving Doors 101: Specifying a more energy-efficient, secure opening

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Revolving Doors 101: Specifying a more energy-efficient, secure opening

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