Voussoir


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Related to Voussoir: Trumeau, groin vault, barrel vault, archivolt, putlog, Radiating chapels

Voussoir

A wedge-shaped block whose converging sides radiate from a center forming an element of an arch or vaulted ceiling.

stepped voussoir

A voussoir that is squared along its upper surfaces so that it fits horizontal courses of masonry units.

voussoir

A wedge-shaped masonry unit in an arch or vault whose converging sides are cut as radii of one of the centers of the arch or vault.
References in periodicals archive ?
Contact Cooke and Arkwright on 029 2034 6346 Great House is just that: Great house in Aberthin, Vale of Glamorgan includes the Gatehouse, which itself is approached from Llanquian Road, over a small bridge with rubble parapets and arches of voussoirs (wedged shaped stones used to form an arch) over Nant Aberthin.
and] the whole structure seems to expand and extend outwards as the eye travels upward; the fan-shaped alternation of light and dark voussoirs intensifies this impression--the impression of a room that appears to fan outwards from many centers, and is at once motionless and mobile".
The voussoirs rest on the centering until the keystone is wedged into place.
Decorative woodwork around eaves, doors and windows is gone, as is any overt decorative brickwork, particularly voussoirs, polychrome or three-dimensional banding, or chimney work.
On the masonry arches the keystone and the voussoirs on the arch have opened up showing some significant gaps which is common with movement in the bridge.