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This article gives a list of conversion factors for several physical quantities.A number of different units (some only of historical interest) are shown and expressed in terms of the corresponding SI unit.
Dry stone walls in the Yorkshire Dales, England. Dry stone, sometimes called drystack or, in Scotland, drystane, is a building method by which structures are constructed from stones without any mortar to bind them together. [1]
The Mourne Wall at the summit of Slieve Donard, where a trig point stands upon the summit tower. The wall was crafted from natural granite stone using traditional dry stone walling techniques. On average the wall is about 1.5 m (4 ft 11 in) high and 0.8 to 0.9 m (2 ft 7 in to 2 ft 11 in) thick and is estimated to be 19.5 mi (31.4 km) long. [3]
Polygonal masonry is a technique of stone wall construction. True polygonal masonry is a technique wherein the visible surfaces of the stones are dressed with straight sides or joints, giving the block the appearance of a polygon.
Slipform stonemasonry is a method for making a reinforced concrete wall with stone facing in which stones and mortar are built up in courses within reusable slipforms. It is a cross between traditional mortared stone wall and a veneered stone wall. Short forms, up to 60 cm high, are placed on both sides of the wall to serve as a guide for the ...
MMcf – million cubic feet (of natural gas) MMcfe – million cubic feet (of natural gas equivalent) MMcfge – million cubic feet (of natural gas equivalent) MMS – Minerals Management Service (United States) MMscfd – million standard cubic feet per day; MMTPA – millions of metric tonnes per annum; MMstb – million stock barrels
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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.