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Glossary of Industry Terms

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Wall tile

A glazed tile with a body that is suitable for interior use and which is usually nonvitreous, and is not required nor expected to withstand excessive impact or the capillaries.

Warpage

A concave or convex curvature of a tile so that the surface is not perfectly flat.

Water absorption

The ability to take up and retain water. Water-cement ratio. The ratio of the amount of water, exclusive only of that absorbed by the aggregates, to the amount of cement in a concrete or mortar mixture; preferably stated as a decimal by weight.

Water level

The water level is a piece of clear plastic hose :”~” to in diameter and usually about 50′ in length. It is filled with water, from which all air must he removed.

Waterproof membrane

A membrane, usually made of built-up roofing, to provide a positive waterproof floor over the substrate, which is to receive a tile installation using; a wire reinforced mortar bed. (CTI)

Wearing course

A topping or surface treatment to increase the resistance of a concrete pavement or slab to abrasion.

Weathering

Changes in color, texture, strength, chemical composition or other properties of a natural or artificial material due to the action of the weather.

Welded-wire fabric

A series of longitudinal and transverse wires arranged substantially at right angles to each other and welded together at all points of intersection.

Welded-wire fabric reinforcement

Welded-wire fabric in either sheets or rolls, used to reinforce mortar and concrete.

Well-graded aggregate

Aggregate having a particle size distribution which will produce maximum density, i.e., minimum void space.

Wet areas

Interior or exterior tiled areas subject to periodic or constant wetting. Examples: showers; sunken tubs; pools; exterior walls; roofs; exterior paving and interior floors. (CTI)