| Arcade: | Series of arches supported by piers or columns.... | |
| Axed Arch: | Describes the construction when the wedge shaped voussoirs are cut with a hammer and bolster and tri... | |
| Bull's Eye: | An arch, as a whole circle, forming an opening in a wall mainly for a small circular window but also... | |
| Camber Arch: | A one centred arch also known as a Flat or Georgian Arch. It differs from all other arches in that t... | |
| Centre: | Temporary timber frame, set in an opening, on which an arch is turned; used for larger spans say ove... | |
| Circle on Circle: | An arch that is circular in elevation and on plan; normally the springing and the soffit are level s... | |
| Crown: | The highest point on the external curve of an arch or the arch outline.... | |
| Extrados: | The upper curve of an arch.... | |
| Face Templet: | Pattern prepared, from a full size drawing, to mark out the wedge shaped voussoirs in readiness for ... | |
| Folding Wedges: | A pair of matching wooden wedges positioned with the thin edges facing in opposite directions to eac... | |
| Gauged Arch: | Work of the highest quality; an arch built with soft red bricks known as Rubbers. These bricks are m... | |
| Gothic Arch: | Also known as a two-centre arch. It is best described as the inclination of two segmental arches, fr... | |
| Haunch: | The portion of an arch situated mid-way between the crown and the springing.... | |
| Impost: | Projecting course or courses at the top of a pier from which an arch springs.... | |
| Intrados: | The internal or lower curve of an arch.... | |
| Inverted Arch: | Sometimes required in the foundation work of large buildings when dead loads are concentrated, at in... | |
| Joggle: | A process used to increase the strength of Gauged Arches. When the voussoirs have been cut, and rubb... | |
| Key Brick: | Only present in Axed or Gauged Arches. The voussoirs are set out so that the centre line of a key br... | |
| Niche: | A circular recess formed in a wall to house a statue or other ornamentation. They are usually sphero... | |
| Relieving Arch: | Usually a two ring segmental arch built within a wall over a flat lintel, of wood or stone, to trans... | |
