Barrel Vault

Vault Side
Vault Side Right For You. Prices Right For Everyone.
Pants.Shopzilla.com

Oak Barrel
Find and Compare prices on oak barrel at Smarter.com.
www.smarter.com/homegarden

Barrel vault - Wikipedia, the free encyclopedia
Early barrel vault designs occur in northern Europe, Turkey, Morocco and other regions. In medieval Europe the barrel vault was an important element of stone ...
en.wikipedia.org

Vault (architecture) - Wikipedia, the free encyclopedia
The barrel vault is a continuous arch, the length being greater than its diameter. ... With a barrel vault, the temporary support is then shifted on to support ...
en.wikipedia.org

barrel vault: Definition from Answers.com
barrel vault n. A simple continuous vault, typically semicircular in cross section. ... Early barrel vault designs occur in northern Europe, Turkey, Morocco ...
www.answers.com

Barrel Vault Roof Photo Gallery
Gerard Roofing Technologies Comparison Chart Real Life Stories ... Wind Fire Hail Safety/Weight. Canyon Shake Tile Barrel Vault Shingle. Granite Ridge Guardian ...
www.gerardusa.com

Vault - Wikimedia Commons
Plan view of a barrel vault showing lateral forces. Quadripartite gothic rib vault. Sixpartite gothic rib vault. Barrel vault, Net vault, drawing from Brockhaus, 1888 ...
commons.wikimedia.org

Vaults - Architecture - History for Kids!
Barrel Vaults for Kids - what is a barrel vault? ... The earliest barrel vaults were built by people living in the Roman Empire, who ...
www.historyforkids.org

AskOxford: barrel vault
ASK THE EXPERTS BETTER WRITING WORLD OF WORDS GAMES GLOBAL ENGLISH FOREIGN LANGUAGES. barrel vault. ? noun Architecture a vault forming a half cylinder. ...
www.askoxford.com

Groin Vaults - History for Kids!
Groin Vaults for Kids - what is a groin vault? How is a groin vault different from a barrel vault? ... About barrel vaults. About buttresses. About a dome ...
www.historyforkids.org




Warning: mkdir() [function.mkdir]: Permission denied in /home/webs/affiliatelib2/CacheManager.php on line 12

Warning: mkdir() [function.mkdir]: No such file or directory in /home/webs/affiliatelib2/CacheManager.php on line 12

Warning: fopen(/home/templatecore2cache//*cluesnet.com/d0/d0f43b32da2ea7c85a76508ea6c1bfe3afb10d5e.tc2cache) [function.fopen]: failed to open stream: No such file or directory in /home/webs/affiliatelib2/CacheManager.php on line 130

Warning: fwrite(): supplied argument is not a valid stream resource in /home/webs/affiliatelib2/CacheManager.php on line 131

Warning: fclose(): supplied argument is not a valid stream resource in /home/webs/affiliatelib2/CacheManager.php on line 132



with a barrel vaulted soffit. Note the absence of Clerestory, all of the light being provided by the Rose window at one end of the vault., New York CityA Barrel vault, also known as a tunnel vault or a wagon vault, is an architectural element formed by the extrusion of a single curve (or pair of curves, in the case of a pointed barrel vault) along a given distance. The curves are typically circular in shape, lending a semi-cylindrical appearance to the total design. The barrel vault is the simplest form of a Vault (architecture): effectively a series of arch placed side by side, i.e., one after another.

As with all arch-based constructions, there is an outward thrust generated against the walls underneath a barrel vault. There are several mechanisms for absorbing this thrust. One is, of course, to make the walls exceedingly thick and strong - this is most primitive and sometimes unacceptable method. A more elegant method is to build two or more vaults parallel to each other; the forces of their outward thrusts will thus negate each other. This method was most often used in construction of churches, where several vaulted naves ran parallel down the length of building. However, the outer walls of the outermost vault would still have to be quite strong or reinforced by buttressing. The third and most elegant mechanism to resist the lateral thrust was to create an intersection of two barrel vaults at right angles, thus forming a groin vault.

Barrel vaults are known from Ancient Egypt, and were used extensively in Roman architecture. They were also used to replace the Cloaca Maxima with a system of underground sewers. Early barrel vault designs occur in northern Europe, Turkey, Morocco and other regions. In medieval Europe the barrel vault was an important element of stone construction in monastery, castles, tower houses and other structures. This form of design is observed in cellars, crypts, long hallways, cloisters and even great halls.

Theory and early history Barrel vaulting was known and employed by early civilisations, including Ancient Egypt and Mesopotamia, but apparently it was not a very popular or very common method of construction. The technique probably evolved out of necessity to roof buildings with masonry elements such as bricks or stone blocks in areas where timber and wood were scarce. The earliest known example of a vault is a Tunnel vault found under the Sumer ziggurat at Nippur in Babylonia, ascribed to about 4000 BC, which was built of burnt bricks amalgamated with clay Mortar (masonry). The earliest tunnel vaults in Egypt are found at Requagnah and Denderah, circa 3500 BC; these were built in sun-dried brick in three rings over passages descending to tombs: in these cases, as the span (architecture) of the vault was only two meters. In these early instances, the barrel vault was chiefly used for underground structures such as drains and sewers, though several buildings of the great Late Egyptian mortuary palace-temple of Ramesseum were also vaulted in this way.Dietrich Wildung, Egypt, From Prehistory to the Romans, Taschen, 2001. Recent archaeological evidence discovered at the Morgantina site (in the province of Enna) shows that the aboveground barrel vault was known and used in Hellenistic Sicily in third century BC, indicating that the technique was also known to Ancient Greeks.

Ancient Romans most probably inherited their knowledge of barrel vaulting from Etruscans. Romans were the first to use this building method extensively on large-scale projects, and were probably the first to use scaffolding to aid them in construction of vaults spanning over widths greater than anything seen before. However, Roman builders gradually began to prefer the use of groin vault; though more complex to erect, this type of vault did not require heavy, thick walls for support (see bellow), and thus allowed for more spacious buildings with greater openings and much more light inside, such as thermae.

After the fall of the Roman empire, few buildings large enough to require much in the way of vaulting were built for several centuries. In the early Romanesque architecture period, a return to stone barrel vaults was seen for the first great cathedrals; their interiors were fairly dark, due to thick, heavy walls needed for support of vault. One of the largest and most famous churches enclosed from above by a vast barrel vault was the church of Cluny Abbey, built between eleventh and twelfth century.

In thirteenth and fourteenth century, with the advance of the new Gothic_architecture style, barrel vaulting became almost extinct in constructions of great Gothic cathedrals; groin vaults reinforced by stone ribs were mostly used in the beginning, and later on various types of spectacular, ornate and complex medieval vaults were developed. However, with the coming of Renaissance and Baroque, and revived interest in art and architecture of antiquity, barrel vaulting was re-introduced on a truly grandiose scale, and employed in constructions of many famous buildings and churches, such as Basilica di Sant'Andrea di Mantova by Leone Battista Alberti, San Giorgio Maggiore by Andrea Palladio, and perhaps most glorious of all, St. Peter's Basilica in Rome, where a huge barrel vault spans the 27 meters wide nave.http://www.stpetersbasilica.org/Interior/Nave/Nave.htm

Engineering issues With a barrel vault design the vectors of pressure result in a downward force on the crown while the lower portions of the arches realise a lateral force pushing outwards. Mount Holyoke college, The Art of Cathedrals: Stresses in barrel vaulted design As an outcome this form of design is subject to failure unless the sides are anchored or buttressed to very heavy building elements or substantial earthwork sidings. For example, at Muchalls Castle in Scotland adjacent walls to the barrel vaulted chambers are up to 4,6 meters thick, adding the buttressing strength needed to secure the curved design.C.Michael Hogan, History of Muchalls Castle, Lumina Press, Aberdeen (2005) Well documented cases exist of the long term stress effects on inadequately laterally supported barrel vaults such as the seventeenth century church of Guimarei. S. Huerta & G. Lopez, Stability and consolidation of an ashlar barrel vault with great deformations: the church of Guimarei, Transactions of the Wessex society, 17 November 2006

The inherent difficulty of adequately lighting barrel vaulted structures has been widely acknowledged.Friedrich Ragette, Traditional Domestic Architecture of the Arab Region, American University of Shadah (2003)The intrinsic engineering issue is the need to avoid [window punctures in stonework barrel vaults. Such openings could compromise the integrity of the entire arch system. Thus the Romanesque medieval builders had to resort to techniques of small windows, large buttresses, or other forms of interior wall cross-bracing to achieve the desired lighting outcomes. In many of the monasteries a natural solution was cloisters which could have high barrel-vaulted construction with an open courtyard to allow ample lighting.

Since 1996 structural engineers have applied Isaac Newtonian mechanics to calculate numeric stress loads for ancient stonework barrel vaults.Gui-Rong Liu, Mesh Free Methods: Moving Beyond the Finite element analysis Method, CRC Press (2003) These analyses have typically used a finite element algorithm to calculate gravity induced stresses from the self weight of an arched system. In fact, for structural engineers, analysis of the barrel vault has become a benchmark test of a structural engineering computer model "because of the complex membrane and inextensional bending states of stress" involved.

In terms of comparison to other vaulting techniques the barrel vault is inherently a weaker design compared to the more complex groin vault. The barrel vault structure must rest on long walls creating less stable lateral stress, whereas the groin vault design can direct stresses almost purely vertically on the apexes.Robert A. Scott, The Gothic Enterprise: A Guide to Understanding the Medieval Cathedral University of California Press (2003)

Early occurrences sewer in Rome. Construction started ca. 600 Common Era



Modern examples There are numerous contemporary examples of barrel vault design in Victorian architecture and modern architecture, including:

The barrel vault in unconventional usage Beyond the classical use of the barrel vault in macro-architectural design (e.g. as a major structural roofing element), there are a variety of derivative applications clearly based on the original concept and shape of the barrel vault. These applications arise in the fields of surgery, skylight design, children's toys and micro-structure design (such as bus shelters). While none of these applications rival the majesty of the ancient and Classical predecessors, they demonstrate the pervasiveness of the barrel vault as an architectural concept in contemporary times.

In the field of bone surgery the technique of a "barrel vault" shaped incision is not only a well defined state-of-the-art surgical procedure, but the name barrel vault is given to this technique by orthopedic surgeons.A. Wohlfahrt, P. Heppt, A. Goldmann and P. Wirtz, High tibial barrel-vault osteotomy. A clinical study and statistical analysis of 91 long-term results PZ Orthop Ihre Grenzgeb. 1991 Jan-Feb;129(1):72-9 The Wohlfahrt study cited documents results of this surgical procedure on the human tibia in 91 such operations.

See also

References General Specific

External links







 
Copyright © 2008 opini8.com - All rights reserved.
Home | Terms of Use | Privacy Policy
All Trademarks belong to their repective owners.
Many aspects of this page are used under
commercial commons license from Yahoo!