Quoin (architecture)

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Structural quoins on a limestone rubble wall
Structural quoins on a limestone rubble wall

Quoins are the corner stones of brick or stone walls.[1] Quoins may be structural, or may be decorative. Architects and builders use quoins to give the impression of strength and firmness to the outline of a building. Rough-finished or rusticated masonry is also frequently used for foundation layers of buildings to give the same impression. Quoinage can be carried out in stone on a stone building, with stone on a predominantly brick building, or by laying brick masonry to give the appearance of blocks at the corner. If structural, quoins are usually part of load bearing walls; if decorative, they may be made of a variety of materials including brick, stone and wood. The most common form of decorative use for a quoins uses an alternative pattern of rectangles that wrap around the wall, mimicking the pattern of stone blocks or brick as they would wrap around a corner and thus join the two walls. In Georgian architecture, wooden quoins were most often part of an overall theme to imply stone, and thus permanence.

[edit] References

  1. ^ Rankine, William J. M. (1862). A Manual of Civil Engineering. Griffin, Bohn, and Co, p.385.