SOME TECHNICAL TERMS EXPLAINED

Spandrel: Space between the curve of an arch; the vertical drawn from

its springing and the horizontal drawn from its apex (C.6).
String-course: Projecting horizontal band along the wall of a building

Tierceron: Rib inserted in a Gothic vault between the transverse and
diagonal ribs (£.4).

Transom: Horizontal division of a window.

Transverse Rib: (£.2).

Triforium: Wall passage between the arcade of a church nave and the
clerestory, or between the gallery and the clerestory. It opens in
arcades towards the nave. The arcading can also be blind, with no
wall-passage behind. Some writers call the gallery a triforium.

Triglyph: Vertical grooved member of the Doric frieze (C.2).

Voussoir: A wedge-shaped block forming part of the arch of a door or
window (D.2).

A.----QUEEN ANNE HOUSE.

x. Pediment. 3. Cornice.

2. Quoins. 4. String-coutse.

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