Quoin (architecture)
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Quoin Architecture
Quoining on the corners of Palazzo Aragona Gonzaga, Rome.
Rustic quoins, keystone with man profile, main entrance Palazzo Giusti, Verona
The near corner pictured of the Church of St. Mary, Fetcham demonstrates the alternate horizontal quoining technique.

Quoins ( or ) are masonry blocks at the corner of a wall.[1] They exist in some cases to provide actual strength for a wall made with inferior stone or rubble[2] and in other cases to make a feature of a corner,[3] creating an impression of permanence and strength, and reinforcing the onlooker's sense of a structure's presence.[4]

Stone quoins are used on stone or brick buildings. Brick quoins may appear on brick buildings that extrude from the facing brickwork in such a way as to give the appearance of uniformly cut blocks of stone larger than the bricks. Where quoins are used for decoration and not for load-bearing, they may be made from a wider variety of materials beyond brick, stone or concrete, extending to timber, cement render or other stucco.


Uniform ashlar blocks

In a traditional, often decorative use, large exactly cuboid ashlar stone blocks or replicas are only used on the corners with their longest sides horizontally: the longest sides are laid to be on one wall plane then the other that the corner forms (course after course). This forms a long-side, short-side alternate pattern, which by using the same size blocks alternates when the viewer passes the corner. This can be called the alternate, horizontal quoining technique.[]

Alternate cornerstones

A large and small cornerstones technique can be used, and in this technique it is not uncommon for the alternate courses to be of different thickness, with typically the larger cornerstones thinner than the smaller cornerstones.[]

Long and short (vertical)

The long and short quoining method instead places long stone blocks with their lengths oriented vertically, between smaller ones that are laid flat. This load bearing quoining is common in Anglo-Saxon buildings such as that of St Bene't's Church in Cambridge, England.[]


  1. ^ Rankine, William J. M. (1862). A Manual of Civil Engineering. Griffin, Bohn, and Co. p. 385. 
  2. ^ Charles F.Mitchell. Building Construction. Part 1. First Stage or Elementary Course. Second Edition--Revised. Published by B.T. Batsford, 52 High Holborn. 1889. Page 48.
  3. ^ "Definitions for: Quoin". Retrieved 2014. 
  4. ^ Encyclopaedia Perthensis. 576: John Brown. 1816. 

External links

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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