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2. Vinyl composition tile - Wikipedia

   en.wikipedia.org/wiki/Vinyl_composition_tile

   Vinyl floor tiling. Vinyl composition tile (VCT) is a finished flooring material used primarily in commercial and institutional applications. Modern vinyl floor tiles and sheet flooring and versions of those products sold since the early 1980s are composed of colored polyvinyl chloride (PVC) chips formed into solid sheets of varying thicknesses (1 ⁄ 8 in or 3.2 mm is most common) by heat and ...

3. Cement board - Wikipedia

   en.wikipedia.org/wiki/Cement_board

   Cement board. Cement board is composed of aggregated Portland cement with a glass-fiber mesh on the surfaces. This 5⁄16 inch (7.9 mm) thick cement board is designed as an underlayment for tile floors. These are 3-by-5-foot (91 by 152 cm) sheets. A cement board is a combination of cement and reinforcing fibers formed into sheets, of varying ...

4. Space Shuttle thermal protection system - Wikipedia

   en.wikipedia.org/wiki/Space_Shuttle_thermal...

   Densifying the tile with tetraethyl orthosilicate (TEOS) also helped to protect the silica and added additional waterproofing. Diagram of a HRSI tile. An uncoated HRSI tile held in the hand feels like a very light foam, less dense than styrofoam, and the delicate, friable material must be handled with extreme care to prevent damage. The coating ...

5. Dropped ceiling - Wikipedia

   en.wikipedia.org/wiki/Dropped_ceiling

   Dropped ceiling. A dropped ceiling is a secondary ceiling, hung below the main (structural) ceiling. It may also be referred to as a drop ceiling, T-bar ceiling, false ceiling, suspended ceiling, grid ceiling, drop in ceiling, drop out ceiling, or ceiling tiles and is a staple of modern construction and architecture in both residential and ...

6. Iceland police say 1 U.S. tourist dead, 1 injured in ice cave ...

   www.aol.com/news/iceland-police-1-tourist-dead...

   Updated August 26, 2024 at 12:29 PM. Reykjavik, Iceland — One U.S. tourist was killed and another seriously injured when part of an ice cave collapsed in southeast Iceland as their tour group ...

7. Waterproofing - Wikipedia

   en.wikipedia.org/wiki/Waterproofing

   Waterproofing is the process of making an object, person or structure waterproof or water-resistant so that it remains relatively unaffected by water or resisting the ingress of water under specified conditions. Such items may be used in wet environments or underwater to specified depths. Water-resistant and waterproof often refer to resistance ...