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English medieval walls often contain a mixture of cobbles, rubble and re-used brick, though the picture from Thetford shows almost exclusively cobbles. Some cobblestone architecture shows consistent matching in the size of the stones used, shape, and color. [5] This method of construction has been referred to as a form of folk art. [10]
The two narrower and shorter, approximately 50 and 60 m (160 and 200 ft)-long linear features lying shoreward of the Bimini Road consist of smaller tabular stone blocks that are only 1–2 m (3–7 ft) in maximum horizontal breadth. Having rounded corners, the blocks composing these pavements resemble giant loaves of bread.
Cobblestone is a natural building material based on cobble-sized stones, and is used for pavement roads, streets, and buildings. Setts , also called Belgian blocks , are often referred to as "cobbles", [ 1 ] although a sett is distinct from a cobblestone by being quarried and shaped into a regular form, while cobblestones are naturally ...
A sett, also known as a block or Belgian block, [1] is a broadly rectangular quarried stone used in paving roads and walkways. [ 2 ] [ 3 ] Formerly in widespread use, particularly on steeper streets because setts provided horses' hooves with better grip than a smooth surface, they are now encountered more usually as decorative stone paving in ...
Rustication is a range of masonry techniques used in classical architecture giving visible surfaces a finish texture that contrasts with smooth, squared-block masonry called ashlar. The visible face of each individual block is cut back around the edges to make its size and placing very clear.
Ashlar (/ ˈ æ ʃ l ər /) is a cut and dressed stone, worked using a chisel to achieve a specific form, typically rectangular in shape. The term can also refer to a structure built from such stones. [1] Ashlar is the finest stone masonry unit, and is generally rectangular . It was described by Vitruvius as opus isodomum or trapezoidal.
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] Although each unit in an arch or vault is a voussoir, two units are of distinct functional importance: the keystone and the springer. The keystone is the centre stone or masonry unit at the apex of an arch.
A keystone (or capstone) is the wedge-shaped stone at the apex of a masonry arch or typically round-shaped one at the apex of a vault. In both cases it is the final piece placed during construction and locks all the stones into position, allowing the arch or vault to bear weight.