Alhambra, Sala de la Barca

Ceramic mosaic dado along the south walls of the Sala de la Barca. The dado originally ran the full length of the south wall, in east and west wings, but is now incomplete in places. The original is in five colours, but the graphic has only four, missing out brown khatems.

• Growth dynamic build of this pattern.
• Random dynamic build of this pattern.
• Structured dynamic build of this pattern.
• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains one square.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• There are two non-regular reflective tiles.
• The tiling satisfies the interlace condition and has no finite interlace and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 81 polygons.

1. Page 52 of Charles Cahier and Arthur Martin. 376 Decorative Allover Patterns from Historic Tilework and Textiles, Dover, 1868. ISBN 048626146. [cahier]
2. Photo by David Wade: SPA 1624x (Alhambra, Sala de la Barca, Spain) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}
3. Photo from Nick Crossling (Alhambra, Sala de la Barca, Spain. Dado panel) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

• Wade photo SPA 1624x

• Tiling whose tile angles are a multiple of 45° and whose lengths are p+q*sqrt(2).

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