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2. Floor slip resistance testing - Wikipedia

   en.wikipedia.org/wiki/Floor_slip_resistance_testing

   Floor slip resistance testing is the science of measuring the coefficient of friction (or resistance to slip accidents) of flooring surfaces, either in a laboratory (before or after installation) or on floors in situ. Slip resistance testing (or floor friction testing) is usually desired by the building's owner or manager when there has been a ...

3. Quarry tile - Wikipedia

   en.wikipedia.org/wiki/Quarry_tile

   Quarry tile is a building material, usually to inch (13 to 19 mm) thick, made by either the extrusion process or more commonly by press forming and firing natural clay or shales. [1][2] Quarry tile is manufactured from clay in a manner similar to bricks. [3] It is shaped from clay, and fired at a high temperature, about 2,000 °F (1,000 °C).

4. Aperiodic tiling - Wikipedia

   en.wikipedia.org/wiki/Aperiodic_tiling

   An aperiodic tiling using a single shape and its reflection, discovered by David Smith. An aperiodic tiling is a non-periodic tiling with the additional property that it does not contain arbitrarily large periodic regions or patches. A set of tile-types (or prototiles) is aperiodic if copies of these tiles can form only non- periodic tilings.

5. Saltillo tile - Wikipedia

   en.wikipedia.org/wiki/Saltillo_tile

   Saltillo tile is a type of terracotta tile that originates in Saltillo, Coahuila, Mexico. [1] It is one of the two most famous products of the city, the other being multicolored woven sarapes typical of the region. Saltillo-type tiles are now manufactured at many places in Mexico, and high-fire "Saltillo look" tiles, many from Italy, compete ...

6. Einstein problem - Wikipedia

   en.wikipedia.org/wiki/Einstein_problem

   Aperiodic tiling with "Tile(1,1)". The tiles are colored according to their rotational orientation modulo 60 degrees. [1] ( Smith, Myers, Kaplan, and Goodman-Strauss) In plane geometry, the einstein problem asks about the existence of a single prototile that by itself forms an aperiodic set of prototiles; that is, a shape that can tessellate space but only in a nonperiodic way.

7. Structural clay tile - Wikipedia

   en.wikipedia.org/wiki/Structural_clay_tile

   Structural clay tile describes a category of burned-clay building materials used to construct roofing, walls, and flooring for structural and non-structural purposes, especially in fireproofing applications. Also called building tile, structural terra cotta, hollow tile, saltillo tile, and clay block, the material is an extruded clay shape with ...