Facade / Corner masonry
Quoin
/kwɔɪn/noun
A variant of coin, from Latin cuneus, “wedge.”
Definition
The external angle of a wall, or one of the large, often emphasized blocks forming that corner in masonry construction.
Fig. 52 — Quoin: schematic studyNOT TO SCALE
Illustrative study — Quoin · AI-generatedSAMPLE IMAGE
Photo study — Quoin · AI-generated00:06
Structural & construction notes
Quoins bond and strengthen vulnerable corners; alternating long and short faces tie the two wall directions together. Rendered or rusticated quoins are a common decorative treatment.
An educational reference. Project-specific design requires professional guidance.