Apex Stone

The uppermost stone in a gable, pediment, vault or dome usually triangular, often highly decorated.

Appliqué

An accessory decorative feature applied to an object or structure.

  

Apse

A semicircular or nearly semicircular space in a church terminating in the axis and intended to house an altar.

Apse Aisle

An aisle or ambulatory extending around an apse or chevet.

  

Apse Chapel

A chapel opening from an apse such a radial chapel in a conspicuous feature of French Gothic architecture.

  

Apsidal

Pertaining to an apse or similar to one.

  

Apsidiole

A small apsidal chapel one projecting from an apse.

Arabesque

Intricate overall pattern of geometric forms or stylized plants used in Muhammadan countries. Overall decorative pattern of acanthus scrolls, swags, candelabrum shafts, animal or human forms or panels or pilasters in Roman and Renaissance architecture.

Arcading

A line of arches, raised on columns that are represented in relief as decorated ion of a solid wall

Arc Formeret

The wall arch or wall rib or the corresponding rib coming next to the arcade between nave and aisle or the like as in Gothic vaulting.

Arch

A curved construction which spans an opening: usually consists of wedge-shaped blocks called voussoirs, or a curved or pointed structural member which is supported at the sides or ends. Arches vary in shaped from the horizontal flat arch through semicircular and semi elliptical arches to bluntly or acutely pointed arches.

Arch Ban

Any narrow elongated surface forming part of or connected with an arch.

 

Arch Brace

A curved brace usually used in pairs to support a roof frame and give the effect of an arch.

  

Arch Beam

A beam whose upper surface is slightly curved.

Arched Buttress

Also called a Flying Buttress - a characteristic feature of Gothic construction in which the lateral thrust of a roof or vault are taken up by a straight bar of masonry, usually sloping carried on an arch, and a solid pier or buttress sufficient to receive the thrust.

Arched Construction

A method of construction relying on arches and vaults to support walls and floors.

Arched Corbel Table

In Early Christian and Romanesque architecture a raised band often at the top of a wall composed of small arches resting on corbels, the arcading regularly punctuated by junctures with pilaster strips.

Arching

The transfer of stress from yielding part of a soil mass to adjoining less- yielding or restrained parts of the mass. The arched part of a structure. A systems of arches.

Arch Rib

In Romanesque Architecture a transverse rib crossing the nave or aisle at right angles to its length. A principal load bearing member of a ribbed arch.

Arch Truss

A truss having an arched upper chord (concave downward) and a straight bottom chord there are vertical hangers between the two chords