Architectural and Engineering Glossary

C

Capacitor

An electric component which consists of conducting plates insulated from each other by a layer of dielectric material;introduces capacitance into a circuit.

Capacitor Motor

A single phase induction motor with its main winding connected to a source of power and having an auxiliary winding connected in series with a capacitor to facilitate starting.

Capacity

1.See carrying capacity.2.The volume contained in a vessel.3.The maximum or minimum water flow obtainable under given conditions (e.g.,specified conditions of pressure,temperature,and velocity).

Capacity Insulation

The ability of masonry to store heat; depends on its mass,density,and specific heat.

Cape Ann House

A rectangular house,commonly one or one and a half stories high,that is similar to a Cape Cod house,but has a shingled mansard roof rather than a shingled gable roof.

Cape Chisel

A long cold chisel which has a long taper and a narrow cutting edge;used for cutting keyways and the like.

Cape Cod House

A colonial one-and-a-half- story rectangular house of wood-frame construction that originated on Cape Cod,Massachusetts.Usually characterized by:a massive central chimney serving all fireplaces;a gable roof;a roof covering and exterior wall covering of hand split wood shingles,left unpainted to weather to a gray color;double-hung windows on the first story and often on the gable end walls;paneled doors;a partial basement.Cape Cod houses are of three types:full Cape house,which has two windows on each side of the front door;three-quarter Cape house,which has two windows on one side of the front door and a single window on the other side; and a half Cape house,which has two windows on one side of the front door and none on the other.

Cape House

 A term used in some parts of New England for a Cape Cod house.

Capellaccio

A local tufa stone used for building construction in ancient Rome.

Capilla Abierta

A Hispanic open chapel,usually adjacent to a church.

Capilla Major

1.The principal chapel in Spanish churches.2.The area directly around the high altar of a church.

Capillary Action, Capillarity

1.The movement of a liquid in the interstices of soil or other porous material,as a result of surface tension.2. The phenomenon responsible for dry soil sucking up moisture above the ground water level.Also see capillary flow.

Capillary Break

A space between two surfaces which is purposely made wide enough to prevent the movement of moisture through the space by capillary action.

Capillary Flow

The flow of moisture through a capillary pore system,as in concrete.

Capillary Groove

A groove formed between two building components to prevent capillary action between them.

Capillary Joint

Same as sweat joint.

Capillary Migration

See capillary flow.

Capillary Space

In cement paste,any space not occupied by anhydrous cement or cement gel.Air bubbles, whether entrained or entrapped,are not considered to be part of the cement paste.

Capillary Tube

A tube of small internal diameter;used in refrigeration as a control for the flow of liquid refrigerant,or as an expansion device between the condenser and evaporator;or used to transmit pressure from the sensitive bulb of a temperature control to the operating element.

Capillary Water

Water,above the water table,held there by capillary action.

Capital

The topmost structural member of a column,pilaster,anta,or the like, often decorated; may support an architrave,1 or may be surmounted by an impost. See  illustrations  under the various orders;also see angle capital,basket capital,bracket capital,bud capital, Byzantine capital (illustrated under Byzantine

Capital Cost

The cost of acquiring a building,including any substantial improvements the building may require.

Capital Messuage

The main dwelling of a manor house.See messuage.

Capitol

Official meeting place for a legislative body.

Cappella Del Coro

The choir,or chapel of the choir.

Capping

Any architectural member serving as a cap,1,such as a coping.
 

Capping In

The application of roofing felt to a roof deck.

Capping Piece, Cap Piece, Cap Plate

A piece of timber covering the heads of a series of uprights or other vertical structure.

Capping Plane

A plane used for rounding the upper surface of wooden railings.

Capreolus

In an ancient timber roof,a brace or strut;a king post or tie beam.

Capstone

1.Any single stone in a coping.2.A stone placed at the top of a stone arch.

Captain’s House

In colonial New England,a house having a truncated hipped roof and chimneys at both gable ends;has a widow’s walk and/or a cupola on the roof.

Captain’s Walk

See widow’s walk.

Captrim

See cap molding. 

Car

See elevator car. 

Car Annunciator

An electric device in an elevator car which provides a visual indication of floor landings.

Car Door

See elevator car door.

Car Door Contact,gate Contact

An electric device which prevents movement of an elevator car unless its door (or gate) is in the closed position.

Car Platform

Same as elevator car platform.

Caracole

A spiral stair.

Carbon Arc Cutting

An arc-cutting process in which the severing of metal is effected by melting with the heat of an arc produced between the carbon electrode and the metal being cut.

Carbon Arc Spotlight

A spotlight employing a high intensity arc light source.

Carbon Arc Welding

An arc welding process wherein coalescence is produced by heating with an arc between a carbon electrode and the work.

Carbon Black

A synthetically produced black pigment,almost pure carbon;used to color paint and concrete because of its high shading strength.Also see animal black.
 

Carbon-arc Lamp

A high intensity electric discharge lamp employing an arc discharge between carbon electrodes.

Carbonaceous

Said of rock containing organic matter.

Carbonation

The reaction between carbon dioxide and calcium compounds,esp.in cement paste,mortar,or concrete,to produce calcium carbonate. 

Carcass Flooring

The frame of timbers which supports the floorboards above and the ceiling below.
 

Carcass Roofing

A framework of timber which spans a building and carries the boarding and other covering.

Carcer

1.A prison.2.A starting stall in a Roman circus for horse or chariot races.3.The dens for beasts in an amphitheater.