| Decibel.
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| Dry Bulb.
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| Doing Business As.
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| Design/Build Institute of America.
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| Double thick conduit.
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| Double thick metal duct.
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| Direct Current.
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| In reality; actually; in fact, whether by right or not.
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| By right or of right.
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| Diatomaceous Earth.
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| Removal of all water content during calcining of gypsum.
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| A branch leading from a soil, waste or vent pipe, building drain sewer which is terminated at a developed length of 2 feet or more by means of a plug or other fitting. A dead end is not used to admit water or air into the piping system.
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| In paint, having no gloss at all.
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| Loose knot in wood, usually dark in color.
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| A roofing asphalt that has a softening point of 140° F (60° C).
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| An absolutely horizontal roof. slope.
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| The load due to the vertical weight of all permanent structural and nonstructural elements of a building, such as walls, floors, and roofs.
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| One that stays in on or off position only as long as it is held there manually.
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| 1. A space with an abundance of absorptive surfaces that does not support sound. 2. A space between walls or a floor and ceiling.
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| A lock bolt having no spring action nor bevel, and which is operated by a key or a turn piece.
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| Construction intended to prevent the passage of sound.
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| As applied to switches, circuit breakers, switchboards, control panels, and panelboards, so designed, constructed, and installed that no current-carrying parts are normally exposed on the front.
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| A lock equipped with a deadbolt only.
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| A large or heavy object buried in the ground as an anchor.
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| Act of separating air from substances.
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| Softwood timber.
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| Accumulated rubbish, trash and fragments of waste.
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| See Long Term Debt.
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| See Short Term Debt.
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| Money that is owed.
|