| A large board found in a gymnasium, which displays the score and often other information of a game or match.
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| Gymnasium.
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| Metal channel used to anchor wood gymnasium flooring.
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| Insulation, usually board insulation, located between sleepers below gymnasium wood flooring to dampen the sound drum effect.
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| A room or building used for indoor sports.
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| An earthy deposit found at or near the surface of the ground, consisting of finely crystalline gypsum mixed with loam, clay, sand, and humus; gypsum content generally ranges from 60% to more than 90%.
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| 810 First Street, NE, #510, Washington, DC 20002, (202) 289-5440.
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| A 1/4 (6.35 mm)to 5/8 inch (15.875 mm) thick gypsum board for use as a backing for gypsum wallboard, acoustical tile or other dry cladding.
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| A cast gypsum building unit; also called a Gypsum Tile.
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| A calcium gypsum mixed with wood chips, or aggregate, or both, used primarily for poured roof decks.
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| A 3/4 (19.0 mm) to 1 inch (25.4 mm) gypsumboard consisting of a single board or factory laminated multiple boards used as a gypsum stud or core in semisolid or solid gypsum board partitions.
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| Troweled on plaster material to make depressions level.
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| A gypsumboard used as the permanent form for poured gypsum roof deck.
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| A plaster for mixing with lime putty to control the setting time and initial strength of the finish coat; classified either as quickset or slowset.
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| A gypsum cement for use with sand aggregate to achieve high compressive strength plaster.
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| A plaster base manufactured in the form of sheets or slabs of various sizes and either 3/8 or 1/2 inch thick, having an incombustible core, essentially gypsum, and surfaced with special paper suitable for receiving gypsum plaster.
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| Molded, lightweight masonry units made from gypsum plaster, water and fiber.
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| A specially formulated plaster used in casting and ornamental plasterwork; may be used neat or with lime.
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| A plaster requiring the addition of aggregate on the job; it may be unfibered or fibered (vegetable, or glass fibers).
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| Plaster in which the cementing substance is gypsum.
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| A plaster which is mixed at the mill with a mineral aggregate and may contain other ingredients to control time of set and working properties; only the addition and mixture of water is required on the job; also called Mill-Mixed and Pre-Mixed
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| A lightweight roofing substrate made of gypsum in the form of structural boards or poured in place over a structural deck.
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| Flat sheet material of gypsum board with water repellent paper secured to exterior side of walls, roof or floor framing used to create rigidity in building superstructure, serve as base to receive other construction, and add fire resistive characteristics; not designed for long term direct exposure to the elements.
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| see Gypsum Block.
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| Various proprietary ready-mixed finish coat materials consisting essentially of calcined gypsum.
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| Flat sheet material of fire rated gypsum board.
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| A gypsum board used primarily as interior surfacing material for building structures.
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| A mill-mixed plaster containing a small percentage of wood fiber as an aggregate, used for fireproofing and high strength.
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| see Alpha Gypsum.
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| A common naturally occurring mineral composed of hydrous calcium sulfate, CaSO42H2O; the main component of sheetrock or drywall; gypsum, when heated, forms plaster-of-Paris.
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