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Acoustical tile
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Special tile made of wood, mineral, cork, metal or fiber that is installed on ceilings and/or walls to control sound.
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Admixture
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Material other than water, aggregate, or hydraulic cement added to concrete before or during mixing to modify the concrete's properties.
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Anchorage
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1. Device used to anchor tendons to a concrete member in post-tensioning; 2. Device used to anchor tendons during the curing of concrete in pre-tensioning.
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Area wall
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Metal or concrete wall that forms open area.
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Areaway
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Open space that allows light and air to a window.
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Atrium
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Space intended for occupancy within a building extending vertically through three or more floor levels of the building and enclosed at the top.
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Back nailing
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Practice of nailing the back portion of a roofing ply.
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Balloon frame
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A framing system in which studs and corner posts extend from the sill to the plate and upper story floor joists are carried on ledgers or girts let into the studs.
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Barge board
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Fascia or board at gable just under edge of the roof.
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Baseboard
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Board along floor attached to wall and partitions in a building to hide gaps and imperfections.
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Base flashing
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Portion of the flashing attached to or resting on the deck to direct the flow of water onto the roof covering.
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Beam
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Principal horizontal wood, steel, or concrete members of a building.
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Bearing capacity
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Ability of ground material to safely support a load.
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Bearing pressure
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Force exerted from the foundation to the ground.
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Bearing wall
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Wall that supports a floor or roof of a building.
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