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Term Definition
Environmental Impact Assessment. see Environmental Impact Report.  
Environmental Impact Report. A report that examines and considers all likely effects on the environment caused by a proposed development of land, and proposes measures avoiding, rcing, or offsetting any significant adverse effects; also called Environmental Impact Assessment or Environmental Impact Statement.  
Environmental Impact Statement. see Environmental Impact Report.  
Environmental Protection Agency (EPA). 401 M Street, SW, Washington, DC 20460, (202) 260-4700.  
Environmental Sustainability. Land development and construction utilizing materials that are replaceable, like wood, and minimizing use of non-replaceable materials and energy resources.  
Enzyme. Complex organic substance, originating from living cells, that speeds up chemical changes in foods; enzyme action is slowed by cooling.  
Eolian. Borne, eroded, or deposited by the wind.  
EPA. Environmental Protection Agency.  
EPDM. Ethylene Propylene Diene Monomer.  
Epicenter. The point on the earths surface vertically above the origin, focus, or hypocenter of an earthquake.  
Episcopal Throne. The bishops ceremonial chair in a cathedral.  
Epoxy Adduct. Epoxy resin having all of the required amine incorporated but requiring additional epoxy resin for curing.  
Epoxy Adhesive. A two-part adhesive system employing epoxy resin and epoxy hardener used for bonding of ceramic tile to back-up materials.  
Epoxy Amine. Amine-cured epoxy resin.  
Epoxy Concrete. Concrete with added adhesive resin to aid in binding.  
Epoxy Ester. Epoxy-modified oil; single package epoxy.  
Epoxy Flooring. A resin spread on flooring to make a hard, tough surface.  
Epoxy Grout. A two-part grout system consisting of epoxy resin and epoxy hardener, especially formulated to have impervious qualities, stain, and chemical resistance, used to fill joints between tile units.  
Epoxy Mortar. A two-part mortar system consisting of epoxy resin and epoxy hardener used to bond tile to back-up material where chemical resistance and high bond strength is a consideration.  
Epoxy Paint. Paint with added resin to give it adhesive and improved bonding characteristics in certain applications.  
Epoxy Resin. An epoxy composition used as a chemical-resistant setting adhesive or chemical-resistant grout.  
Epoxy Terrazzo. A two-part adhesive, employing epoxy resins, an epoxy hardener used for bonding marble or other stone chips set in portland cement to a backup material.  
Equalizer. One that equalizes by distributing evenly or uniformly, as of force.  
Equation. 1. A chemical equation shows what happens in a chemical reaction; the reactants equal the products. 2. A mathematical equation is a statement that two quantities or expressions are equal.  
Equilateral Triangle. A triangle having three equal sides.  
Equilibrium Moisture Content. The moisture content at which wood neither gains or loses moisture when surrounded by air at a given relative humidity and temperature.  
Equilibrium. A state of rest due to balanced forces; state of being in balance; implies no tendency to change.  
Equipment Mobilization. The assembly and movement of equipment to a jobsite.  
Equipment Pad. A thick slab-type stone or precast concrete block placed under mechanical equipment to spread the weight and load of the machinery evenly and to prevent excessive vibration.  
Equipment Rack. A device mounted on a wall to hold or store the implements used in an operation or activity.  

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