Architectural and Engineering Glossary
L
The sapwood cut from the edge of a board.
Pertaining to stone.
A white pigment consisting of zinc sulfide and barium sulfate,having moderate hiding power;high-strength lithopone contains a higher percentage of zinc sulfide.
In ancient Greece and Rome,an ornamental pavement made of small,irregular places of stone,such as mosaic.
An organic chemical indicator of acidity or alkalinity;is red in color for pH values below4.5 and blue above 8.3.
A series of coats of arms of the pious founders of certain churches in the Middle Ages and the Renaissance.
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An 18th-century euphemism for an outdoor toilet;a privy.
That part of a choir reserved for the clergy serving the church.
Said of a church that is laid out in plan so that the congregation faces toward Jerusalem.
1.Connected to a source of voltage.2.Said of a room having an unusually small amount of sound absorption.
A boom on a power that can be raised or lowered without interrupting the digging operation.
The edge of a painted surface which can be blended with fresh paint without having the lap show.
See intergrown knot.
The moving or movable external load on a structure;includes the weight of furnishings of a building,of the people,of equipment,etc.but does not include wind load.
Any electric component or part which is designed to operate at a voltage different from that of the earth.
A room characterized by an unusually small amount of sound absorption.
Steam that has not as yet given up any of its energy and has not yet condensed,e.g.,steam emerging from a boiler.
Descriptive of a piece of electric equipment which is so constructed that there are live parts which can be touched from the front of the assembly.
The acoustical quality of a live room.
The thickening of paint or varnish to an unusable rubbery consistency.
See dwelling unit.
A space in a dwelling for social use of the residents.
The angle between the horizontal plane of a louver grid and the plane beyond which the louver conceals all objects above it.
1.A window having louvers which fill all or part of the opening instead of glass. 2.An open window in the tower of a church.
1 having multiple blades which are mechanically linked so that they open or close simultaneously.
A ceiling system consisting of multicellular louvers which shield the light sources mounted above it.
See shutter.
Same as louver.
A bid stating the lowest bid price,including selected alternates,and complying with all bidding requirements.
A soft steel containing a small amount of carbon (less than 0.25%).
According to ANSI/IEEE standards, a nominal system voltage of 1000 volts or less.
A portland cement containing a relatively small amount of sodium or potassium or both.
Steel having an alloy content of less than 8%.
steel Steel having a carbon content less than 0.20%.
Concrete whose oven dry unit weight of less than 50 pounds per cubic foot (800 kg/m3).
contents Building contents having such low combustibility that no self-propagating fire therein can occur.
A cement in which there is only limited generation of heat during setting,achieved by modifying the chemical composition of normal portland cement.
An incandescent lamp having a special internal construction to minimize the generation of audible noise,esp.when operated on certain types of dimmers.
According to the ASME Boiler Code,a boiler whose maximum safe working gaugepressure for steam service is 15 pounds per square inch.
A mercury vapor lamp whose partial pressure during operation does not exceed 0.001 atmosphere;fluorescent and germicidal lamps are included in this category.
See silicon bronze.
The ability of a sealant to recover its original form at low temperature when the deforming load is removed.
A system of switches,control transformers,relays,and auxiliary devices to control a number of lighting circuits remotely,from one or more locations.
In a system in which water is supplied to a building from a gravity tank,an alarm indicating that the pump supplying the tank has not activated at the low-water condition and that water in the tank is dangerously low.
A type of trailer for hauling construction equipment,with reduced ground clearance that facilitates loading of machinery without an auxiliary ramp.
The lowest bid which is responsive to and complies with the bidding requirements.
Same as lowest responsive bid.
Same as liquid petroleum gas.
Abbr.for “low pressure sodium.”
Abbr.for living room.
