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The Greeks called the construction technique emplekton [4] [5] and made particular use of it in the construction of the defensive walls of their poleis. The Romans made extensive use of rubble masonry, calling it opus caementicium , because caementicium was the name given to the filling between the two revetments .
Coursed masonry construction arranges units in regular courses. Oppositely, coursed rubble masonry construction uses random uncut units, infilled with mortar or smaller stones. [1] If a course is the horizontal arrangement, then a wythe is a continuous vertical section of masonry [2] one unit in thickness. A wythe may be independent of, or ...
Dry ashlar masonry laid in parallel courses on an Inca wall at Machu Picchu Ashlar masonry north gable of Banbury Town Hall, Oxfordshire Ashlar polygonal masonry in Cuzco, Peru Quarry-faced red Longmeadow sandstone in random ashlar was specified by architect Henry Hobson Richardson for the North Congregational Church (Springfield, Massachusetts, 1871).
Among the construction trades, in most industrialized countries, each has a distinct 2-5 year craft apprenticeship education and usually once started a worker remains in a single craft and progresses through ranks of skill for the duration of their career (pre-apprentice, apprentice, and journeyman; some countries include a post-journeyman ...
Originally, and in later poorly constructed walls, the rubble was not consolidated. Later, mortar and cement were used to consolidate the core rubble and produce sturdier construction. Modern masonry still uses core and veneer walls; however, the core is now generally concrete block instead of rubble, and moisture barriers are included. [2]
Ashlar masonry. Stone masonry using dressed (cut) stones is known as ashlar masonry. [4] Trabeated systems. One of the oldest forms of stone construction uses a lintel (beam) laid across stone posts or columns. This method predates Stonehenge, and refined versions were used by the Egyptians, Persians, Greeks, and Romans. [4] Arch masonry.
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[9] [10] In 1982, the partent company was re-registered as John Mowlem and Co. plc. [1] During 1986, Mowlem acquired the scaffolding specialist SGB Group; [11] its purchase of Unit Construction that same year gave the company a substantial presence in the private house building sector. Within two years, sales were up to an annual rate of 1,200 ...
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