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ZIP code: 37137. Area code: 931: GNIS feature ID: ... Nunnelly has a post office, with ZIP code 37137. [3] [4] References This page was last edited on 27 July 2023 ...
This invention provided suspended ceiling construction in which access may readily be obtained at any desired location. Patent Number US 2,984,946 A was granted on May 23, 1961. [ 5 ] Brown has sometimes been credited as being the inventor of the dropped ceiling [ 6 ] even though other patents preceded his, as shown in the table below.
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 ...
For a suspended slab, there are a number of designs to improve the strength-to-weight ratio. In all cases the top surface remains flat, and the underside is modulated: A corrugated slab is designed when the concrete is poured into a corrugated steel tray, more commonly called decking.
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