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Summary: Building dictionary to explain building jargon and terminology from A - Z.
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Building dictionary for the letter E - Page 6
Elevated water tank
A domestic water tank supported on an elevated structural framework to obtain the required head of pressure.
Elevation
(1) A vertical distance relative to a reference point. (2) A view or drawing of the interior or exterior of a structure as if projected onto a vertical plane.
Elevator
A "car" or platform that moves within a shaft or guides and is used for the vertical hoisting and/or lowering of people or material between two or more floors of a structure. An elevator is usually electrically powered, although some short-distance elevators (serving fewer than six or seven floors) are powered hydraulically.
Elevator shaft
A hoistway through which one or more elevator cars may travel.
Elevator car
That part of an elevator that includes the platform, enclosure, car frame, and gate or door.
Elevator pit
That part of an elevator shaft that extends from the threshold level of the lowest landing door down to the floor at the very bottom of the shaft.
Elevator recall
The override of elevator operation by a building's fire safety system upon activation of a fire alarm. In a fire emergency, elevator cars automatically return to the ground floor and can be operated only by a fire department.
Embankment (dyke)
A ridge constructed of earth, fill rocks, or gravel and used most commonly to retain water or to carry a roadway. The length of an embankment exceeds both its width and its height.
Embedment
(1) The depth of a pile, measured from its deepest point to ground level. (2) The placing of one material into a nother so that the two become a single material.
Embossed
Describes a material whose surface is raised or indented.
Emergency ballast
A lighting system that uses a battery to function in the event of a power loss. When AC power fails, the emergency ballast senses the failure and immediately switches to the emergency mode to illuminate lamps at a reduced lumen output.
Emergency exit
A door, hatch, or other device leading to the outside of the structure and usually kept closed and locked. The exit is used chiefly for the emergency evacuation of a building, airplane, or other occupied space when conventional exits fail, are insufficient, or are rendered inaccessible.
Emergency lighting
Temporary illumination provided by battery or generator and essential to safety during the failure or interruption of the conventional electric power supply.
Emergency power
Electricity temporarily produced and supplied by a standby power generator when the conventional electric power supply fails or is interrupted. Emergency power is essential in facilities like hospitals, where even relatively short power outages could be life-threatening to certain individuals.
Emergency release
On a door, a safety device that allows exit during emergency conditions. Unlike a panic exit device, an emergency release magnetic door holder that automatically releases in emergencies to close fire door, not necessarily preventing egress.
Emergency stop switch
A safety switch in the car of an elevator which can be manually operated to cut off electric power from the driving machine motor and brake of an electric elevator, or from the electrically operated valves and/or pump motor of a hydraulic elevation.
Emery
Bluish-grey or black, impure carborundum in granular form used as an abrasive for grinding and polishing the surfaces of materials such as metal, stone, glass, and other materials.
Emery paper
A finely abrasive paper manufactured by sprinkling powdered emery or aluminum oxide onto paper coated with glue. Used either wet or dry for polishing metallic surfaces.
Emery wheel
An abrasive wheel similar to a grinding wheel but composed primarily of emery (or aluminum oxide) and rotated at high speeds for fine grinding or polishing.
Emittance
A percentage of the energy absorbed by a solar energy collector.
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