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Approved drop out (or drop-out) ceilings allow the installation of a dropped ceiling beneath existing fire sprinklers because the tiles, sometimes called melt-out ceiling tiles, are heat-sensitive and are designed to fall from the dropped ceiling suspension grid during a fire, allowing the sprinklers to spray their water.
The Wheeling Corrugating Company out of Wheeling, West Virginia, became the leading tin ceiling manufacturer in the late 1800s. At that time, Wheeling Corrugating was a large steel mill that also made products from their steel sheets such as roofing and siding. [6] Sheets of tin were stamped one at a time using rope drop hammers and cast iron ...
A ceiling can also be the upper limit of a tunnel. The most common type of ceiling is the dropped ceiling, [citation needed] which is suspended from structural elements above. Panels of drywall are fastened either directly to the ceiling joists or to a few layers of moisture-proof plywood which are then attached to the joists. Pipework or ducts ...
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Acoustic ceiling may refer to: Dropped ceiling; Popcorn ceiling This page was last edited on 27 ...
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