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Term Definition
Energy. Usable power such as heat or electricity; actual or potential ability to do work.  
Enforcing Agency. The designated department or agency of any city, county or the state as specified in the statutes.  
Engaged Column. A building column that is partially subsumed into the wall.  
Engineer. A person who is professionally qualified in a branch of engineering.  
Engineered Fill. Earth compacted into place in such a way that it has predictable physical properties, based on laboratory tests and specified, supervised, installation procres.  
Engineering Fee. The amount charged for engineering services.  
Engineering. The application of science and mathematics by which the properties of matter and the sources of energy in nature are made useful to human beings in structures, machines, products, systems, and processes.  
Engineers Level. An accurate telescopic transit for measuring horizontal and vertical angles; used in ordinary surveying work; see Dumpy Level.  
English Bond. Brickwork laid with alternating courses, each consisting entirely of headers or stretchers; also called Old English Bond or Dutch Bond.  
English Chalk. Chalk obtained from the cliffs of England.  
Engraved Plaque. A commemorative or identifying tablet where figures or letters are inscribed.  
ENR. Engineering News Record; a construction industry publication.  
Enrichments. Any cast ornament which cannot be executed by a running mould.  
Entablature. In classical architecture, the horizontal parts just above the columns, consisting of the cornice, frieze, and architrave.  
Entasis. A convex curvature added to the taper of the shaft of a column in the Greek and Roman styles as a design refinement to make the columns appear straight; also applies to similar adjustments to high walls and spires.  
Enthalpy. A measure of the energy content of a system per unit mass; the sum of sensible and latent heat of a material.  
Entrained Air. Microscopic air bubbles intentionally incorporated into mortar or concrete during mixing, usually by use of a surface-active agent, typically between 10 and 1,000 um in diameter.  
Entraining Agent. A substance added to concrete, mortar, or cement that produces air bubbles during mixing, making it easier to work with and increasing its resistance to frost and freezing.  
Entrance Door. The door which provides access to a building or structure.  
Entrance Mat. A woven fabric or ribbed rubberized mat placed on the outside of a door threshold for the wiping of shoes.  
Entrance. The way in to a property, a building, or a room.  
Entrapped Air. Air in a concrete mix that enters from the atmosphere during mixing; after the concrete hardens and the excess moisture has evaporated, irregular holes remain; entrapped air bubbles are normally much larger and more irregular than entrained air bubbles.  
Entrepreneur. One who assumes the risk of starting and operating a business.  
Entropy. 1.A measure of the disorder or randomness of a system. 2. Mathematical factor used in engineering calculations. 3. Energy in a system.  
Entry Lock. A deadbolt assembly mounted in a door which when unlocked allows access to a building or structure.  
Entry Lockset. A combination doorknob and deadbolt assembly mounted in a door that when unlocked allows access to a building or structure.  
Entry. 1. An entrance room. 2. The recording of a business transaction in a record.  
Envelope. In roofing, a continuous edge that is formed by folding an edge of the base felt over the plies above and securing the base felt to the top felt, or if above-deck insulation is used, to the top surface of the insulation; the envelope thus formed will prevent bitumen dripping through the exposed edge joints of the laminated roofing membrane and also prevent water seeping into the insulation.  
Environment. Physical surroundings circumstances and conditions that affect peoples lives.  
Environmental Factors. Conditions other than indoor air contaminants that cause stress, comfort, or health problems, for example, humidity extremes, drafts, lack of air circulation, noise, and overcrowding.  

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