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William Henry Playfair, University of Edinburgh: bevelled edges of each stone block emphasise the voussoirs, which have a curved base and together form a semi-circle at the top of each arch. A voussoir (/ v u ˈ s w ɑːr /) is a wedge-shaped element, typically a stone, which is used in building an arch or vault. [1]
[4]: 204 On the east side of the passage (on the right when entering the city) is a large niche covered by a semi-dome with two decorative squinches carved with shell motifs. On the west side is a large opening with an iron grille and a muqarnas cornice above, which dates to the modifications made under Mamluk sultan al-Mu'ayyad .
A block from which the diagonal ribs of a vault spring or start. The top of the springer is known as the skewback. [19] Cross-wing A wing attached to a main or original house block, its axis at right angles to the original block, and often gabled. Crypt A stone chamber beneath the floor of a church or other building.
An information sign posted at the trail entrance near the intersection of Jefferson Blvd. and Hetzler Rd. states that the staircase is 715 feet (218 m). In the center of the landing between the 247th and 248th steps is a bronze marker stating the elevation, surrounded by two semi-circular engravings:
Early Christian and Byzantine – A projecting semi-circular apse. Romanesque – A rounded end. It may be a lower apse projecting from a higher square end, usual in Italy, Germany and Eastern Europe. In France and England the chancel terminated in a high eastern end of semi-circular form, surrounded by an ambulatory.
A staircase or stairway is one or more flights of stairs leading from one floor to another, and includes landings, newel posts, handrails, balustrades, and additional parts. [4] In buildings, stairs is a term applied to a complete flight of steps between two floors. A stair flight is a run of stairs or steps
Checkers, software that analyze CAD data formats, are often employed before and after data translation. The checkers can check the organization and quality of the data against internal company standards and international or industry standards. These checkers can be built into specific CAD packages or work on a number of CAD file formats.
In 2005, a prototype of the first post-tensioned spiral stone staircase was made, called "Escalier Ridolfi". It was designed by Claudio D'Amato and Giuseppe Fallacara. [41] In 2006, the full-scale Escalier Ridolfi staircase was presented at the Venice Biennale of Architecture, constructed by Ateliers Romeo stonemasons [42]