Architectural and Engineering Glossary
The lingering tack or stickiness of a paint film which remains over a long period of time.
1.Abbr.for “above grade.”2.Abbr.for “against the grain.”
Abbr.for “American Gas Association.”
In ancient Greece,any work of art dedicated to a god.
A large central African tree with rather lightweight wood of a creamy to pinkish brown color.Used for plywood,interior millwork,and carpentry.
Abbr.for “Associated General Contractors.”
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An aging process in certain metals,at room temperature,which results in increased strength and hardness.
British variant of aging.
See artificial stone.
The chief meeting place or marketplace in an ancient Greek city.
A document setting forth in printed form the general provisions of an agreement with spaces provided for insertion of specific data relating to a particular project.
See British Board of Agrément.
Same as agricultural pipe drain.
A hydrated lime which is used to condition soil.
A system of porous or perforated pipes laid in a trench filled with gravel (or the like);used for draining subsoil.
An obelisk,or the spire of a church tower.
Same as ha-ha.
Abbr.for air-handling unit.
Abbr.for “American Institute of Architects.”
See contract documentsand uniform system.
Abbr.for “American Institute of Electrical Engineers.”
A slender form of drill used for boring or drilling a blasthole in rock.
A half gable,such as that which closes the end of a penthouse roof or of the aisle of a church.
Abbr.for “Acoustical and Insulating Materials Association.”
Same as angle of illumination;usually measured in degrees.
A procedure used to adjust the flow of air in an HVAC system so as to meet the design goals for airflow throughout the system.
A membrane that acts as a resistance to air leakage.
A pipe which emits a jet of air;used to clean an area of debris.
In a drainage system,a piping arrangement in which a drain from an appliance,device,or fixture discharges into the open air and then into another fixture,receptacle,or interceptor;used to prevent back siphonage or backflow.
A perforated brick or perforated metal unit of brick size which is built into a wall;used for ventilation.
In a water piping system near a valve or faucet,a vertical pipe stub which is sealed at the top and contains air;the entrapped air provides a cushion when the valve is closed suddenly,thereby eliminating the noise of water hammer.
A measure of the volume of air supplied to or exhausted from a building (or room);usually expressed in terms of the number of complete changes of air per hour in the room or space under consideration.
Same as pet cock.
A machine which draws in air at atmospheric pressure,then compresses it to pressures higher than atmospheric and delivers it at a rate sufficient to operate pneumatic tools or equipment.
On drawings,abbr.for “air condition.”
A device for providing air conditioning.
Same as air maintenance device.
Same as air curtain.
An empty space left around the external foundation wall of a building to prevent the earth from lying against it and causing dampness.
The process of drying slowly under ambient conditions of temperature and humidity,as in the natural seasoning of lumber or the hardening of paint.
A duct,usually fabricated of metal,fiberglass,or concrete;used to transfer air from one location to another.
In a piping system,a device used to remove air from water,steam,or a refrigerant.
Descriptive of the capability of a material or process to develop a system of minute bubbles of air in cement paste,concrete,or mortar.
Any device used to remove solid and/or gaseous pollutants from air.
A type of air grating.
See warm-air heating system.
In the foundation of a house,an opening that provides ventilation for a crawl space.
Same as pneumatic structure.
A duct,hose,or pipe that supplies compressed air to a pneumatic tool or piece of equipment.