| A roof composed of layers of roofing felt for waterproofing, then sealed with tar or pitch and covered with a layer of gravel to assist in protection from wear and the sun.
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| A metal flange or strip with a vertical lip placed around a built-up roof to prevent loose gravel from falling off the roof; it is also used to present a finished edge detail in built-up roofing.
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| small rock particles resulting from natural disintegration and weathering such as river gravel; mechanically crushed stone.
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| An appliance, with a heat exchanger, that supplies hot air that is distributed by gravity.
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| A device installed in an opening in a room or building which is activated by air passing through to remove stale air and replace it with fresh air.
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| A retaining wall which depends solely on its weight to resist lateral forces of retained earth.
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| 1. The force that attracts a body to the center of the earth. 2. The quality of having weight.
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| Commercial blast.
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| The unsized, uncalendered paper used on the back side of regular gypsum board products and as the face and back paper on backing board products.
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| Lacking in intensity of color.
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| A device to trap and retain the grease content of wastewater and sewage.
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| see Calorie, 2.
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| Design that embraces energy conservation and minimal use of fossil fuels and non-renewable resources.
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| A gypsum board having a tinted face paper usually light green (or blue) to distinguish special board types.
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| Brickwork in which the mortar has not yet set.
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| Concrete which has set but which has not appreciably cured or hardened to its design strength.
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| see Green Architecture.
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| A pigment; a mixture of Prussian blue and yellow lake, sold under various trade names.
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| In masonry, a molded clay unit before it has been burned in preparation for building purposes; an uncured concrete masonry unit.
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| Newly applied plaster that has not dried.
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| A room in a theater for actors who are off-stage.
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| Freshly sawed or undried wood; twenty percent moisture or more.
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| A building site that has never before been built upon; compare with Brownfield Site.
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| The trapping of the suns warmth in the lower atmosphere of the earth caused by an increase in carbon dioxide, which is more transparent to solar radiation from the earth.
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| A glassed enclosure used for cultivation or protection of tender plants.
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| A mischievous creature said to be responsible for malfunctions of machinery and equipment.
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| 1. A network of uniformly spaced horizontal and perpendicular lines, as for locating and referring to points on a drawing. 2. A set of surveyors closely spaced reference lines laid out at right angles, with elevations taken at line intersections.
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| A flat surface upon which food is cooked by dry heat.
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| A framework composed of main runner channels and furring channels to support ceilings.
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| Component of the ventilation system that promotes air circulation in the occupied space by providing a means to return air; a metal screen or grating that allows for the circulation of air.
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