| A high-pressure sodium vapor lamp that produces a wide-spectrum yellow light.
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| High Pressure.
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| Hardwood Plywood Manufacturers Association.
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| Hardwood Plywood & Veneer Association.
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| A pipe fitting used to join two pipes without turning either pipe.
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| 1. A surveyors bench mark; used as a starting point for measuring elevations and horizontal distances. 2. The enlarged end of a hub and spigot cast-iron pipe.
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| see Bell.
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| Color.
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| A behavioral aspect of management -- handling of personnel and the consideration of each problem from the employees point of view; the success or failure of the business often depends on the relationship between management and personnel.
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| The addition of moisture to air, thereby increasing the latent heat.
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| In gypsum wallboard, the ability of the surfacing paper to resist delamination from the core under extremely high humidity conditions.
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| A device for supplying or maintaining humidity in a conditioned space.
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| Electrical control which is operated by changing humidity.
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| The weight of water vapor per unit weight of dry air; also called Specific Humidity.
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| The amount of water vapor in a given volume of air.
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| see Crowned Joint.
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| Decayed organic matter; a dark fluffy swamp soil composed chiefly of decayed vegetation; also called peat.
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| A nonstructural concrete slab having no bearing on walls, being totally supported from above by an overhead structural element.
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| A tropical cyclone with winds over 74 miles per hour; usually accompanied by rain, thunder, and lightning.
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| A small or temporary dwelling of simple construction.
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| A collection of huts.
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| An apparatus that controls a heating, ventilation, and air conditioning system.
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| Heating, Ventilation, and Air-Conditioning system.
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| Hot Water.
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| The act or process of removing an old hydrant.
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| see Wall Hydrant.
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| 1. A discharge pipe with a valve and threaded outlet from which water may be drawn from a water main; a faucet. 2. Fire hydrant; fire plug.
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| 1. A chemical combination of water with another compound or an element. 2. Hydrated Lime.
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| Calcium hydroxide, a dry powder obtained by treating quicklime with water; also called Hydrate.
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| The process of adding water to a substance.
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