Architectural and Engineering Glossary


1.A decorative hood above a niche,pulpit,choir stall,or the like.2.A covered area which extends from the wall of a building,protecting an entrance or loading dock.3.The collective term for the upper blanket of foliage on trees.

Canopy Roof

A  roof,often over a balcony or porch,that is suggestive of the curvature of a suspended cloth canopy.

Canopy Of Honor

Same as celure.


1.A salient corner.2.A line or surface angled in relation to another, as a sloped wall.3.Masonry “on cant” is laid with joints sloping between front and back surfaces;the vertical joints are laid normally.4.A log partly or wholly squared off.

Cant Bay

A bay erected on a plan of canted outline.

Cant Bay Window.

A cant window.

Cant Beam

A beam having its edges beveled or chamfered.

Cant Board

A board which is laid so as to cant  a surface,as under the first row of shingles on a roof,or to support lead sheeting on each side of  a valley gutter;a cant strip.

Cant Brick

See splay brick.

Cant Molding

A square or rectangular molding with the outside face beveled.

Cant Wall

A wall canted on plan.

Cant Window,cant-bay Window

A bay window erected on a plan of canted outline;the sides of the window are at an angle with respect to the wall;also see angled bay window.


Having a cant,2;said of a wall,etc.

Canted Coursing

Moderately pitched courses of brick or masonry in a vault.

Canted Molding

A wood raking molding.

Canted Wall

A cant wall.


A principal rafter in an ancient wooden roof.


1.A beam,girder,truss,or structural member or surface that projects horizontally beyond its vertical support,such as a wall or column.2.A projecting bracket used for carrying the cornice or extended eaves of a building.

Cantilever Arch

An arch that is supported by flat projections on opposing walls.

Cantilever Barn

A barn having its second floor projecting beyond the structure of the ground floor;especially found in the southern regions of the US.

Cantilever Beam

A beam which is supported only at one end.

Cantilever Footing

A footing having a tie beam to another footing to balance a structural load not symmetrically located with respect to the footing.

Cantilever Form

Same as slip form.

Cantilever Retaining Wall

See cantilever wall.

Cantilever Steps

Steps built into the wall at one end,but supported at the other end only by the steps below.

Cantilever Truss

A truss overhanging its support at one end and anchored at the other.

Cantilever Wall

A reinforced concrete wall which resists overturning by the use of cantilever footings.

Cantilevered Window

Same as oriel.


A corner of a building decorated with a projecting masonry course,a pilaster,or similar feature.


Ornamented at the corners with projecting pilasters.

Cantoned Pier

Same as pilier cantoné.


A church choir gallery.


Of (or belonging to) the cantor or precantor,for example the cantoris side of the choir in a church;the left or north side as one faces the altar.


On drawings,abbr.for canvas.


A closely woven cloth of cotton,hemp,or flax;sometimes adhered to a wall or deck to serve as a substrate for paint; used to cover roof decks that are walking surfaces or sun decks.

Canvas Wall

A plastered wall to which a layer of canvas has been applied to serve as a base for wallpaper.

Cap Block

Same as drive cap.

Cap Cable

In prestressed concrete,a short cable introduced to prestress the zone of negative bending.

Cap Flashing

Same as counterflashing.

Cap House

A small enclosure,at the top of stairs in a turret or tower,which leads to the parapet around a roof.


The quantitative measure of the electric energy storage capability of a capacitor;usually measured in farads or microfarads (106 farads).

Capacitance Alarm

A device which is electrically connected to a protected metal enclosure (such as a safe,vault,file,or security cabinet) so that the enclosure itself becomes part of a balanced-capacitance circuit.A person approaching the protected cabinet unbalances the electrical circuit and activates a security alarm.


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.


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.