Architectural and Engineering Glossary
Same as partial height partition.
A fixed or movable, free standing, rearrangeable interior space divider;may incorporate sound absorptive properties.
The use of a building for the transaction of business or for similar purposes.
One legally established by a municipality,which depicts existing parks,streets, and drainage systems;and reservations and rights of way for the future expansion of these systems usually are depicted.
Same as grip.
Descriptive of the actual size of a timber after it has been sawn.
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1.A horizontal ledge on a wall (or other member or construction),marking a decrease in its thickness above;also called a watertable.2.A bend in a pipe.3.A change in the direction of a pipeline (other than 90),e.g.,by a combination of elbows or bends,which brings one section of the pipe out of line with but into a line parallel to another section.4.A short line perpendicular to a surveyed line,measured to a line or point for which data are desired,thus locating the second line or point with reference to the first or surveyed line.
In a reinforcing bar,any bend that displaces the center line of a section of the bar to a position parallel to the original bar (the displacement usually is relatively small);commonly used in reinforced concrete columns.
A concrete masonry unit which is not rectangular;usually used as a corner block to maintain the masonry pattern on the exposed face of a single withe wall whose thickness is less than half the length of the unit.
Same as stepped back chimney.
Digging with a ladder ditcher whose boom is displaced from the line of travel of the ditcher.
A pipe fitting whose shape has the outline of the letter S,used for connecting lengths of straight pipe that are parallel to,but displaced from,each other.
A secondary survey line roughly parallel and close to a primary survey line to which it is referenced in measured offsets.
A pin and-socket hardware device with a single bearing contact,by means of which a door is suspended in its frame,allowing it to swing about an axis which normally is located about 3⁄4 in. (1.9 cm) out from the door face.
A screwdriver whose head is set 90to the shaft.
1.Abbr. for “ogee.” 2.Abbr. for “on grade.”
A pointed arch composed of reversed curves,the lower concave and the upper convex.Compare with nodding ogee arch.
A carpenter’s plane with a reverse curved blade for shaping ogee moldings.
1.A double curve,formed by the union of a convex and concave line, resembling an S-shape.2.A molding having such a shape,an ogee molding.
Same as ogee arch.
1.In general,a pointed arch.2.Strictly,the diagonal rib in Gothic vaults.
The unit of electrical resistance of a conductor such that a constant current of 1 ampere in it produces a decrease in voltage across it of 1 volt.
A law stating that the current in an electric circuit is directly proportional to the electromotive force (voltage) in the circuit and inversely proportional to the resistance in the circuit.
On drawings, abbr. for “oval headed screw.”
A lightly viscous neutral liquid belonging to one of three classes:(a) animal oil,(b) mineral oil,or (c) vegetable oil.
A buffer consisting of a cylinder and a piston or plunger where the oil in the cylinder acts as a medium to absorb and dissipate the kinetic energy of an impact,such as that of a descending elevator car or counterweight acting on the piston or plunger.
In a furnace or boiler,a burner in which fuel oil is vaporized or atomized and then mixed with air and ignited;the resulting flame is directed upon the surface to be heated.
An oil base paint containing a high concentration of colored pigment;commonly used for tinting paint.
A furnace that is fired by oil.
Same as interceptor.
In a varnish,the number of gallons of oil per 100 lb of gum or resin.
A paint in which a drying oil is the vehicle for the pigment.
An oil soluble chemical used to treat wood for protection against decay and insects.Also see creosote,pentachlorophenol.
In a refrigeration system,a device for separating oil and oil vapor from the refrigerant,usually installed in the compressor discharge line.
A stain containing dye or pigment mixed with oil or oil varnish which penetrates the surface to be finished.
Same as oil immersed switch.
A high gloss varnish for interior use;made by heating or blending a drying oil with a gum or resin.
A house paint pigment consisting of lithopone and white lead or zinc white.
See oil paint.
A distemper which contains a drying oil.
A slight buckling in sheet metal,causing a wavy or uneven appearance.
A liquid immersed transformer in which the liquid is a hydrocarbon or mineral oil.
A fuse that is either totally or partially immersed in an insulating dielectric liquid of a transformer or switchgear.
A switch which is immersed in a special insulating fluid,usually oil.
See oil filled transformer.
A small opening,or circular loophole,in a fortification of the Middle Ages.
A fine grained stone used to impart a sharp edge on tools;oil is used to lubricate the rubbing surface.
See gouge slip.