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A steel framing system was devised consisting of vertical steel studs and roof-ceiling trusses to which all interior and exterior panels were attached. The concept of prefabricated housing was well established by firms such as The Aladdin Company , Gordon-Van Tine Company , Montgomery Ward , and Sears in the early 1900s.
Interior doors for wheelchair access must also have a minimum width of 36 in (910 mm). Residential interior doors, as well as the doors of many small stores, offices, and other light commercial buildings, are often somewhat smaller than the doors of larger commercial buildings, public buildings, and grand homes.
A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching, ram-raiding and lock picking, and prevent crimes such as burglary and home invasions.
Modern bank vaults are typically made of reinforced concrete and steel, with complex locking mechanisms and security systems. This article covers the design, construction, and security features of bank vaults. This large 24-bolt Diebold vault door at the Winona National Bank was built in the early 1900s. On the right is the back side of the ...
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