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Akoustolith was first introduced by the Guastavino Fireproof Construction Company, in collaboration with Wallace Sabine of Harvard University, in 1915. [2] The founder of the Guastavino Company, Rafael Guastavino Sr., had immigrated to the United States from Spain in 1881, bringing with him the method of timbrel-vault construction, also known as cohesive construction. [3]
Initially modern dropped ceilings were built using interlocking tiles and the only way to provide access for repair or inspection of the area above the tiles was by starting at the edge of the ceiling, or at a designated "key tile", and then removing contiguous tiles one at a time until the desired place of access was reached.
Popcorn ceiling texture. A popcorn ceiling, also known as a stipple ceiling or acoustic ceiling, is a ceiling with one of a variety of spray-on or paint-on treatments. [1] The bumpy surface is created by tiny particles of vermiculite or polystyrene, which gives the ceiling sound-deadening properties. Mixtures are available in fine, medium, and ...
Acoustic ceiling may refer to: Dropped ceiling; Popcorn ceiling This page was last edited on 27 December 2019, at 14:27 (UTC). Text is available under the ...
The NRC is highly dependent on the type of mounting, [6] which, if not specified, is usually a Type A mounting (ABPMA mounting #4) where the material is placed directly on the floor, wall, or ceiling. Acoustical ceiling tiles are often tested in Type E400 mounting, which simulates a 16-inch-deep (410 mm) plenum.
The typical sound paths are ceilings, room partitions, acoustic ceiling panels (such as wood dropped ceiling panels), doors, windows, flanking, ducting and other penetrations. Technical solutions depend on the source of the noise and the path of acoustic transmission , for example noise by steps or noise by (air, water) flow vibrations.
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