| A light assembly over an exit door that is independently powered to remain lit in the event of a power failure to guide persons to safety.
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| A dead bolt assembly mounted in an exit door.
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| A sign located to identify the way out of a room or building.
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| A passage or door by which one may leave a room or building; egress; a continuous and unobstructed means of egress to a public way, including intervening doorways, corridors, ramps, stairways, smokeproof enclosures, horizontal exits, exit court, and yards.
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| A process that gives off heat.
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| Open mesh cut and drawn from solid sheet of ferrous or non-ferrous metal; made in various patterns and metal thicknesses with uneven or flattened surface; used as a metal reinforcing for plaster.
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| A soft metal sleeve, commonly lead, into which a screw-type bolt is placed to provide a stable fastener.
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| The increase in length or volume per unit for a rise in temperature of 1 degree F.
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| 1. A vertical joint or space to allow for movement due to volume changes; also known as a relief joint or control joint. 2. A separation between two sections of concrete which is provided to allow for free movement due to temperature changes; complete separation between parts of a concrete structure; used in locations where expansion and contraction forces are anticipated; the sections are usually divided by a strip of metal, cork or bituminous material. 3. A joint through tile, mortar, concrete, or masonry down to the substrate, intended to allow for gross movement due to thermal stress or material shrinkage. 4. A device usually formed from sheet metal and having a W shaped cross section; used to provide controlled discontinuity at locations in a plaster membrane where high stresses may be encountered. 5. A structural separation between two building elements designed to minimize the effect of the stresses and movements of a buildings components and to prevent these stresses from splitting or ridging the roof membrane. 6. A joint which permits pipe to expand or contract without breaking and to allow movement of the pipe caused by the pipes expansion and contraction.
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| A sheetmetal plaster screed that allows expansion and contraction of adjoining panels of exterior plaster.
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| Device inserted in predrilled holes, usually in concrete or masonry, which expands as a screw or bolt is tightened within it, used to fasten items to concrete or masonry.
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| Device in a refrigerating system which rces the pressure from the high side to the low side and is operated by pressure.
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| An increase in size when something gets hotter.
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| see Chemical Refrigeration.
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| An analysis procre based on the measurement of deformations and/or strains of the structure or its model; experimental analysis may be based on either elastic or inelastic behavior.
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| A witness who, by virtue of experience, training, skill, or knowledge of a particular field or subject, is recognized as qualified to render an informed opinion on matters relating to that field or subject.
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| Apparatus enclosed in a case which is capable of withstanding an explosion of a specified gas or vapor which may occur within it and of preventing the ignition of a specified gas or vapor surrounding the enclosure by sparks, flashes, or explosion of the gas or vapor within, and which operates at such an external temperature that a surrounding flammable atmosphere will not be ignited thereby.
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| A range of the ratio of solvent vapor to air in which the mixture will explode if ignited; below the lower or above the higher explosive limit, the mixture is too lean or too rich to explode; the critical ratio runs from about one to twelve percent of solvent vapor by volume at atmospheric pressure.
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| An explosive substance used to dislodge or loosen certain formations of earth and rock.
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| A concrete surface in which the coarse aggregate is revealed; a decorative finish for concrete achieved by removing, generally before the concrete has fully hardened, the outer skin of mortar and fine aggregates and exposing the coarse aggregate.
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| A framework for a suspended acoustical ceiling that is visible from below after the ceiling is completed.
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| 1. The part of a felt that is not overlapped by an adjacent felt in a built-up roofing membrane; the exposure then would be that part of the felt that would be covered by the flood coat. 2. The part of a wood shingle or shake that is exposed to the weather.
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| Multiple lane roadway for fast moving traffic, with access and exit ramps limited to intervals, no level crossing roads, and no pedestrian traffic allowed; also known as a Freeway.
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| Pigment which provides very little hiding power but is useful in stabilizing suspension, improving flow, lowering gloss, and providing other desirable qualities; generally low in cost.
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| A flat ladder that can be extended by sliding one section on the other to gain additional height.
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| A device used to extend the backset in a bored lock.
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| A door which is manufactured to withstand the elements and vandalism, so it can be installed on the exterior of a building.
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| An architectural drawing showing the projection on a vertical plane of an exterior surface of a building.
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| An electrical lighting fixture that can be installed outdoors because of its ability to withstand the elements.
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| The act or process of applying paint or sealer to an exterior surface.
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