Architectural and Engineering Glossary
A conventionalized rose pattern,usually with five petals,a superposition of white and red roses,the heraldic emblem of the Tudor dynasty.
A porous limestone used in masonry con-struction.
A low-density,high-porosity rock;composed of volcanic particles,ranging from ash size to small pebble size,which are compacted or cemented together;sometimes used as building stone or as a thermal insulation material.
The magnitude of the force required to pull a tuft out of a carpet,according to an industry standard test procedure.
Carpet made by punching pile yarn through a carpet backing material which has been previously woven;then the pile is cut.
1.A soft,close-textured durable wood, yellowish in color;used for millwork and veneer.2.A rose-colored,very hard wood from Brazil;esp. used for inlay work.
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An inclination inward from the greatest breadth of a structure.
Said of a metal surface that has been cleaned and polished by agitation in a rotating drum containing a polishing compound.
Same as straight-line gable.
In a lock,the locking mechanism which detains the bolt until set free by a key.
In electric wiring,a leve Ractuated snap switch.
A sloping course of bricks that are set perpendicular to a straight-line gable in Dutch architecture or its derivatives;such an arrangement provides a better seal against the penetration of moisture through the masonry joints than one in which all courses of bricks within the gable are laid in horizontal courses up to the peak of the gable.Where a sloping course of bricks intersects a horizontal masonry course,the arrangement of brickwork so formed is called a mouse-tooth pattern.
See tumbling course.
A mound of earth or stone protecting
A drying oil which oxidizes very rapidly,at almost twice the rate of linseed oil;forms a hard dry film when used in paints and varnishes; although “China wood oil” and “wood oil” some times are used as synonyms,tung oil never is extracted from wood.
To weld by means of an electric arc struck between a nonconsumable tungsten electrode and the workpiece;constant current across the arc is supplied during the welding operation.
Steel usually containing 5 to10% (but sometimes as much as 24%) tungsten and 0.4 to 2% carbon.
See incandescent lamp.
A tungsten-filament incandescent lamp which is filled with a gas containing halogens;the envelope, made of quartz or other material that can be subjected to high-temperature,is small compared with standard lamps of equivalent wattage;formerly known as quartziodine lamp.
An ASTM standard test of the surface burning characteristics of a building material.
A vault having a uniform cross section everywhere.
An apparatus for the measurement of particle-size distribution of a finely divided material such as portland cement,based on successive measurements of the turbidity of a suspension in a fluid.
The fineness of a material as measured on a turbidimeter;usually expressed as the total surface area in square centimeters per gram.
See open-top mixer.
The motion of a fluid in which local velocities and pressures fluctuate highly irregularly with time,in contrast to streamline flow.
The upper layer of earth and vegetable mold in which the roots of grass and other small plants form a thick cover.
Same as lawn sprinkler system.
A fastener for a window or door which rotates on a pivot and is attached to the frame.
A small doorknob, often oval or crescent-shaped;used to control the door bolt from the inside of the door.
A small doorknob,lever,or the like,having a spindle attached;used to operate the dead bolt or a bolt mortised in the door.
A tread on a stair where it changes direction.
A job in which the contractor completes all work and furnishing of a building so that it is ready for immediate use.
A device for connecting and tightening a line,rod,or stay;consists of a right screw and a left screw which are coupled by means of a link.
A machine bolt,ordinarily with a hexagonal head,whose shank is fabricated to a close tolerance.
A hanging wood ornament,formed on a lathe,but sometimes hand-carved;especially found in timber-framed early American colonial houses,often suspended from a second-floor overhang,1.either at the front corners of the façade or adjacent to the front door. Sometimes simply called a drop;compare with pendant.
In stone and wood cutting,pieces having a circular outline,such as columns,balusters, etc.;usually cut on a lathe,although some shapes are cut by hand.
The shaping of objects by means of cutting tools while the material,from which the objects are made,rotates rapidly on a lathe.
See chimney bar.
Any one of a set of gouges having the corners of the bit rounded off;used in turning.
1.A piece of board cut to a curve to guide the mason in turning any small arch for which no centering is required.2.Same as camber piece.
One of a number of curved fins which are placed in air-conditioning ductwork used to promote a more uniform airflow and to reduce pressure drop.
Same as spiral stair.
A barrier which rotates on an axis and usually is so arranged as to allow the passage of a person through an opening only in one direction,one person at a time.
That portion of roofing material which is turned up at any vertical surface.
A volatile liquid obtained by the distillation of the exudation from certain coniferous trees;once widely used in paint,it is now replaced by solvents obtained from petroleum or coaltar stocks.Also see wood turpentine.
A stone step,triangular in section, which forms,with other turret steps,a spiral or solid newel stair.Turret steps are tapered and have shaped ends which,laid upon each other,constitute the central column or solid newel.
A diminutive tower,characteristically corbeled from a corner.
Describing a building in which the characteristic feature is a row of turrets.
A tower of a fortification,placed at intervals in the walls of an ancient city or any other fortified enclosure.