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Ashlar

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Dry ashlar masonry laid in parallel courses on an Inca wall at Machu Picchu
Dry ashlar masonry laid in parallel courses on an Inca wall at Machu Picchu
Ashlar masonry north gable of Banbury Town Hall, Oxfordshire
Ashlar masonry north gable of Banbury Town Hall, Oxfordshire
Ashlar polygonal masonry in Cuzco, Peru
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). Although each block was cut with great precision on adjacent faces, the external face was left rough as when removed from the quarry. The blocks were laid randomly without continuous courses or vertical and horizontal joints.
Quarry-faced red Longmeadow sandstone in random ashlar was specified by architect Henry Hobson Richardson for the North Congregational Church (Springfield, Massachusetts, 1871). Although each block was cut with great precision on adjacent faces, the external face was left rough as when removed from the quarry. The blocks were laid randomly without continuous courses or vertical and horizontal joints.

Ashlar (/ˈæʃlər/) is finely dressed (cut, worked) stone, either an individual stone that has been worked until squared, or a structure built from such stones. Ashlar is the finest stone masonry unit, generally rectangular cuboid, mentioned by Vitruvius as opus isodomum, or less frequently trapezoidal. Precisely cut "on all faces adjacent to those of other stones", ashlar is capable of very thin joints between blocks, and the visible face of the stone may be quarry-faced or feature a variety of treatments: tooled, smoothly polished or rendered with another material for decorative effect.[1][2]

One such decorative treatment consists of small grooves achieved by the application of a metal comb. Generally used only on softer stone ashlar, this decoration is known as "mason's drag".[3]

Ashlar is in contrast to rubble masonry, which employs irregularly shaped stones, sometimes minimally worked or selected for similar size, or both. Ashlar is related but distinct from other stone masonry that is finely dressed but not quadrilateral, such as curvilinear and polygonal masonry.[2][4]

Ashlar may be coursed, which involves lengthy horizontal layers of stone blocks laid in parallel, and therefore with continuous horizontal joints. Ashlar may also be random, which involves stone blocks laid with deliberately discontinuous courses and therefore discontinuous joints both vertically and horizontally. In either case, it generally uses a joining material such as mortar to bind the blocks together, although dry ashlar construction, metal ties, and other methods of assembly have been used. The dry ashlar of Inca architecture in Cusco and Machu Picchu is particularly fine and famous.

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Rock (geology)

Rock (geology)

In geology, rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed. Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere. The study of rocks involves multiple subdisciplines of geology, including petrology and mineralogy. It may be limited to rocks found on Earth, or it may include planetary geology that studies the rocks of other celestial objects.

Masonry

Masonry

Masonry is the craft of building a structure with brick, stone, or similar material, which are often laid in and bound together by mortar; the term masonry can also refer to the building units themselves. The common materials of masonry construction are bricks and building stone such as marble, granite, and limestone, cast stone, concrete blocks, glass blocks, and adobe. Masonry is generally a highly durable form of construction. However, the materials used, the quality of the mortar and workmanship, and the pattern in which the units are assembled can substantially affect the durability of the overall masonry construction. A person who constructs masonry is called a mason or bricklayer. These are both classified as construction trades.

Cuboid

Cuboid

In geometry, a cuboid is a hexahedron, a six-faced solid. Its faces are quadrilaterals. Cuboid means "like a cube". A cuboid is like a cube in the sense that by adjusting the lengths of the edges or the angles between faces a cuboid can be transformed into a cube. In mathematical language a cuboid is a convex polyhedron whose polyhedral graph is the same as that of a cube.

Opus isodomum

Opus isodomum

Opus isodomum is an ancient technique of wall construction with ashlars. It uses perfectly cut, completely regular squared stone blocks of equal height, and sometimes of the same length.

Quarry-faced stone

Quarry-faced stone

Quarry-faced stone is stone with a rough, unpolished surface, straight from the quarry.

Polygonal masonry

Polygonal masonry

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.

Course (architecture)

Course (architecture)

A course is a layer of the same unit running horizontally in a wall. It can also be defined as a continuous row of any masonry unit such as bricks, concrete masonry units (CMU), stone, shingles, tiles, etc.

Mortar (masonry)

Mortar (masonry)

Mortar is a workable paste which hardens to bind building blocks such as stones, bricks, and concrete masonry units, to fill and seal the irregular gaps between them, spread the weight of them evenly, and sometimes to add decorative colors or patterns to masonry walls. In its broadest sense, mortar includes pitch, asphalt, and soft mud or clay, as those used between mud bricks, as well as cement mortar. The word "mortar" comes from Old French mortier, "builder's mortar, plaster; bowl for mixing." (13c.).

Dry stone

Dry stone

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. Dry stone structures are stable because of their construction method, which is characterized by the presence of a load-bearing façade of carefully selected interlocking stones.

Inca architecture

Inca architecture

Inca architecture is the most significant pre-Columbian architecture in South America. The Incas inherited an architectural legacy from Tiwanaku, founded in the 2nd century B.C.E. in present-day Bolivia. A core characteristic of the architectural style was to use the topography and existing materials of the land as part of the design. The capital of the Inca empire, Cuzco, still contains many fine examples of Inca architecture, although many walls of Inca masonry have been incorporated into Spanish Colonial structures. The famous royal estate of Machu Picchu is a surviving example of Inca architecture. Other significant sites include Sacsayhuamán and Ollantaytambo. The Incas also developed an extensive road system spanning most of the western length of the continent and placed their distinctive architecture along the way, thereby visually asserting their imperial rule along the frontier.

Cusco

Cusco

Cusco, often spelled Cuzco, is a city in Southeastern Peru near the Urubamba Valley of the Andes mountain range. It is the capital of the Cusco Region and of the Cusco Province. The city is the seventh most populous in Peru; in 2017, it had a population of 428,450. Its elevation is around 3,400 m (11,200 ft).

Machu Picchu

Machu Picchu

Machu Picchu is a 15th-century Inca citadel located in the Eastern Cordillera of southern Peru on a 2,430-meter (7,970 ft) mountain ridge. Often referred to as the "Lost City of the Incas", it is the most familiar icon of the Inca Empire. It is located in the Machupicchu District within Urubamba Province above the Sacred Valley, which is 80 kilometers (50 mi) northwest of Cusco. The Urubamba River flows past it, cutting through the Cordillera and creating a canyon with a tropical mountain climate.

Etymology

The word is attested in Middle English and derives from the Old French aisselier, from the Latin axilla, a diminutive of axis, meaning "plank".[5] "Clene hewen ashler" often occurs in medieval documents; this means tooled or finely worked, in contradistinction to rough-axed faces.[6]

Use

Ashlar blocks have been used in the construction of many buildings as an alternative to brick or other materials.

In classical architecture, ashlar wall surfaces were often contrasted with rustication.

The term is frequently used to describe the dressed stone work of prehistoric Greece and Crete, although the dressed blocks are usually much larger than modern ashlar. For example, the tholos tombs of Bronze Age Mycenae use ashlar masonry in the construction of the so-called "beehive" dome. This dome consists of finely cut ashlar blocks that decrease in size and terminate in a central capstone.[7] These domes are not true domes, but are constructed using the corbel arch.

Ashlar masonry was also heavily used in the construction of palace facades on Crete, including Knossos and Phaistos. These constructions date to the MM III-LM Ib period, c. 1700–1450 BC.

In modern European masonry the blocks are generally about 35 centimetres (14 in) in height. When shorter than 30 centimetres (12 in), they are usually called small ashlar.

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Brick

Brick

A brick is a type of construction material used to build walls, pavements and other elements in masonry construction. Properly, the term brick denotes a unit primarily composed of clay, but is now also used informally to denote units made of other materials or other chemically cured construction blocks. Bricks can be joined using mortar, adhesives or by interlocking. Bricks are usually produced at brickworks in numerous classes, types, materials, and sizes which vary with region, and are produced in bulk quantities.

Classical architecture

Classical architecture

Classical architecture usually denotes architecture which is more or less consciously derived from the principles of Greek and Roman architecture of classical antiquity, or sometimes even more specifically, from the works of the Roman architect Vitruvius. Different styles of classical architecture have arguably existed since the Carolingian Renaissance, and prominently since the Italian Renaissance. Although classical styles of architecture can vary greatly, they can in general all be said to draw on a common "vocabulary" of decorative and constructive elements. In much of the Western world, different classical architectural styles have dominated the history of architecture from the Renaissance until the Second World War, but it continues to inform many architects to this day.

Aegean civilization

Aegean civilization

Aegean civilization is a general term for the Bronze Age civilizations of Greece around the Aegean Sea. There are three distinct but communicating and interacting geographic regions covered by this term: Crete, the Cyclades and the Greek mainland. Crete is associated with the Minoan civilization from the Early Bronze Age. The Cycladic civilization converges with the mainland during the Early Helladic ("Minyan") period and with Crete in the Middle Minoan period. From c. 1450 BC, the Greek Mycenaean civilization spreads to Crete, probably by military conquest.

Beehive tomb

Beehive tomb

A beehive tomb, also known as a tholos tomb, is a burial structure characterized by its false dome created by corbelling, the superposition of successively smaller rings of mudbricks or, more often, stones. The resulting structure resembles a beehive, hence the traditional English name.

Bronze Age

Bronze Age

The Bronze Age is a historic period, lasting approximately from 3300 BC to 1200 BC, characterized by the use of bronze, the presence of writing in some areas, and other early features of urban civilization. The Bronze Age is the second principal period of the three-age system proposed in 1836 by Christian Jürgensen Thomsen for classifying and studying ancient societies and history.

Mycenae

Mycenae

Mycenae is an archaeological site near Mykines in Argolis, north-eastern Peloponnese, Greece. It is located about 120 kilometres south-west of Athens; 11 kilometres north of Argos; and 48 kilometres south of Corinth. The site is 19 kilometres inland from the Saronic Gulf and built upon a hill rising 900 feet above sea level.

Coping (architecture)

Coping (architecture)

Coping is the capping or covering of a wall. A splayed or wedge coping is one that slopes in a single direction; a saddle coping slopes to either side of a central high point.

Corbel arch

Corbel arch

A corbel arch is an arch-like construction method that uses the architectural technique of corbeling to span a space or void in a structure, such as an entranceway in a wall or as the span of a bridge. A corbel vault uses this technique to support the superstructure of a building's roof.

Crete

Crete

Crete is the largest and most populous of the Greek islands, the 88th largest island in the world and the fifth largest island in the Mediterranean Sea, after Sicily, Sardinia, Cyprus, and Corsica. Crete rests about 160 km (99 mi) south of the Greek mainland, and about 100 km (62 mi) southwest of Anatolia. Crete has an area of 8,450 km2 (3,260 sq mi) and a coastline of 1,046 km (650 mi). It bounds the southern border of the Aegean Sea, with the Sea of Crete to the north and the Libyan Sea to the south.

Knossos

Knossos

Knossos is the largest Bronze Age archaeological site on Crete and has been called Europe's oldest city.

Phaistos

Phaistos

Phaistos ), also transliterated as Phaestos, Festos and Latin Phaestus, is a Bronze Age archaeological site at modern Faistos, a municipality in south central Crete. Ancient Phaistos was located about 5.6 km (3.5 mi) east of the Mediterranean Sea and 62 km (39 mi) south of Heraklion, the second largest city of Minoan Crete. The name Phaistos survives from ancient Greek references to a city in Crete of that name at or near the current ruins.

Minoan chronology

Minoan chronology

The Minoan chronology dating system is a measure of the phases of the Minoan civilization. Initially established as a relative dating system by English archaeologist Sir Arthur Evans between 1900 and 1903 based on his analysis of Minoan pottery during his excavations at Knossos on Crete, new technologies including carbon dating and DNA analysis have led to significant revisions to the date ranges.

As metaphor

In some Masonic groupings, which such societies term jurisdictions, ashlars are used as a symbolic metaphor for how one's personal development relates to the tenets of their lodge. As described in the explanation of the First Degree Tracing Board, in Emulation and other Masonic rituals the rough ashlar is a stone as taken directly from the quarry, and allegorically represents the Freemason prior to his initiation; a smooth ashlar (or "perfect ashlar") is a stone that has been smoothed and dressed by the experienced stonemason, and allegorically represents the Freemason who, through education and diligence, has learned the lessons of Freemasonry and who lives an upstanding life.[8]

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Freemasonry

Freemasonry

Freemasonry or Masonry refers to fraternal organisations that trace their origins to the local guilds of stonemasons that, from the end of the 13th century, regulated the qualifications of stonemasons and their interaction with authorities and clients. Modern Freemasonry broadly consists of two main recognition groups:Regular Freemasonry insists that a volume of scripture be open in a working lodge, that every member profess belief in a Supreme Being, that no women be admitted, and that the discussion of religion and politics not take place within the lodge. Continental Freemasonry consists of the jurisdictions that have removed some, or all, of these restrictions.

Personal development

Personal development

Personal development or self improvement consists of activities that develop a person's capabilities and potential, build human capital, facilitate employability, and enhance quality of life and the realization of dreams and aspirations. Personal development may take place over the course of an individual's entire lifespan and is not limited to one stage of a person's life. It can include official and informal actions for developing others in roles such as teacher, guide, counselor, manager, coach, or mentor, and it is not restricted to self-help. When personal development takes place in the context of institutions, it refers to the methods, programs, tools, techniques, and assessment systems offered to support positive adult development at the individual level in organizations.

Tracing board

Tracing board

Tracing boards are painted or printed illustrations depicting the various emblems and symbols of Freemasonry. They can be used as teaching aids during the lectures that follow each of the Masonic Degrees, when an experienced member explains the various concepts of Freemasonry to new members. They can also be used by experienced members as reminders of the concepts they learned as they went through the ceremonies of the different masonic degrees.

Source: "Ashlar", Wikipedia, Wikimedia Foundation, (2022, September 1st), https://en.wikipedia.org/wiki/Ashlar.

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References
  1. ^ Ching, Francis D. K.; Jarzombek, Mark M.; Prakash, Vikramaditya (2007). A Global History of Architecture. Hoboken, New Jersey: John Wiley & Sons. p. 759. ISBN 978-0-471-26892-5.
  2. ^ a b Sharon, Ilan (August 1987). "Phoenician and Greek Ashlar Construction Techniques at Tel Dor, Israel". Bulletin of the American Schools of Oriental Research. Boston: The American Schools of Oriental Research (267): 32–33.
  3. ^ "The Conservation Glossary". University of Dundee. Archived from the original on 2010-05-19. Retrieved 2009-05-04.
  4. ^ Wright, George R. H. (2000). Ancient Building Technology, Vol 1: Historical Background. Technology and Change in History. Leiden, The Netherlands: E. J. Brill. p. 100. ISBN 978-90-04-09969-2. OCLC 490715142.
  5. ^ "Definition of ashlar". Oxford Dictionaries. Archived from the original on August 20, 2017.
  6. ^  One or more of the preceding sentences incorporates text from a publication now in the public domainChisholm, Hugh, ed. (1911). "Ashlar". Encyclopædia Britannica. Vol. 2 (11th ed.). Cambridge University Press. p. 733. This also attests the alternative spellings ashler and ashelere.
  7. ^ Preziosi, D.; Hitchcock, L. A. (1999). Aegean Art and Architecture. Oxford History of Art. pp. 175–6. ISBN 0-19-284208-0.
  8. ^ "Rough and Perfect Ashlar". Masonic Lodge of Education. Retrieved 15 March 2015.
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