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A tongue of wood (either cross grained or plywood) used to join two timbers in a tenoned frame to provide additional strength.

A valve fitted on a transverse pipe between two parallel pipes in order to provide flow between them.

A vault formed by the intersection at right angles of two barrel vaults.

In flexiblemetal roofing,a seam between sheets;usually parallel to the gutter or to the ridge.

A window in which the combination of a single mullion and a transom presents the appearance of a cross.

A weld made between crossed wires or bars.

1.A connection between two otherwise separate piping systems,one containing potable water and the other water which may be contaminated.2.In a fire-protection system,a piping connection from a siamese connection to a standpipe or to a sprinkler system.

Strips,flat bands,or fillets which are applied on the undersides of joists to which lath (for plastering) is nailed;usually attached perpendicular to the main framing members.

A hinge shaped like the letter T;the longer part is fastened to the door leaf and the shorter to the frame.

A sill,1 oriented in a direction perpendicular to the length of the structure.

See box frame.

1.In plywood,a veneer sheet whose grain is at right angles to the face veneer.2.Any decorative band whose grain is perpendicular to the principal surface.(See illustration p. 280.)
 

Cut at right angles to the grain.

A saw adapted by its filing and setting to cut across the grain of wood rather than with the grain.

1.A decorative embellishment,such as a molding around one corner of a door,window,or fireplace opening,that somewhat resembles a squared-off ear;especially popular during the latter half of the 18th century;also called a dog’s ear.2.A small projecting part of a voussoir (arch stone),which hangs upon an adjacent stone.
 

A water filtration process in which a semipermeable membrane is used to separate waterborne contaminants from the water.The bulk solution flows over and parallel to the filter surface,and under pressure,a portion of the water is forced through the membrane filter.

Crossed wires or etched lines on a reticule in the focal plane of the telescope of a surveying instrument.

A joint connecting two wood members which cross each other;half the thickness of each is cut away so that the thickness at the joint is the same as that of each member.

Any piece of timber or beam crossing from wall to wall or running from one part to another.

In a panel door,any horizontal member other than those at the top and bottom of the door.

Undesired signals in one electrical circuit as a result of electrical coupling with another circuit.
 

An area across a street or road esp.designated for pedestrians by special markings or paving materials.

The point where a tree branch joins the trunk.

Obsolete term for crocket.

See curb tool.

A specially shaped form for concrete,used in conjunction with a curb tool to give the desired shape and finish to a concrete curb.

1.The wall plate of a circular or elliptical domical roof, or of a skylight.2.The plate which receives the upper rafters of a curb roof.

One of the upper rafters of a curb roof.

A short ramp cut through a curb.

1.Same as curb joint.2.A wood roll covered with lead at the intersection of the two sloped surfaces of a curb roof.

A pitched roof that slopes away from the ridge in two successive planes;known as a gambrel roof in the US and as a mansard roof in Britain.

A tool used to give the desired finish and shape to the exposed surfaces of a concrete curb.

A machine that extrudes a continuous strip of asphalt or concrete through a shaped template as it moves forward.

A stone forming a curb or part of a curb.

Same as kerf.

The council house in a Roman municipality. 

Maintaining the humidity and temperature of freshly placed concrete during some definite period following placing,casting,or finishing to assure satisfactory hydration of the cementitious materials and proper hardening of the concrete.
 

A catalyst;a hardener.

A built-up covering of sacks,matting,burlap,wet earth,sawdust,straw,or other suitable material placed over freshly finished concrete;such covering is moistened to supply water in the early hydration process,and tends to maintain a uniform temperature.

A liquid which is sprayed (or otherwise applied) to newly placed concrete which retards the loss of water during curing.

1.See autoclaving cycle.2.See steam curing cycle.

A sheet or layer of impervious material laid or sprayed over freshly poured concrete to restrict evaporation of mixing water so that the hydration process can be sustained.Also see membrane curing.

The temperature to which an adhesive must be subject in order to ensure that it will cure satisfactorily;usually the time to effect a satisfactory cure(i.e.,the curing time) is also specified.

The length of time required to effect the cure of a plastic or resin by chemical reaction.

A winding,swirling,or circling in the grain of wood,usually obtained from the crotch or fork of a tree;also see fiddleback.

The distortion of a member,originally linear or planar,so that it is curved in shape,e.g.,the warping of a slab as a result of temperature differences.

The flow of electricity in a circuit; the unit of measurement is the ampere.

The maximum current which an electric device is rated to carry without excessive overheating and consequent premature breakdown or combustion;also see ampacity.

A course of stones with moldings cut on them.May be a stringcourse of part of a cornice.

A short,spiral,scroll-like termination of any architectural member,as at the end of a stair rail.