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. In arches and vaults (such as quasi-domes) keystones are often enlarged beyond the structural requirements and decorated. A variant in domes and crowning vaults is a lantern . A portion of the arch surrounding the keystone is called a crown .
18-464: [REDACTED] Look up keystone in Wiktionary, the free dictionary. Keystone or key-stone may refer to: Keystone (architecture) , a central stone or other piece at the apex of an arch or vault Keystone (cask) , a fitting used in ale casks Companies [ edit ] Keystone Law , a full-service law firm Digital Keystone ,
36-419: A boss . A "dropped keystone" is one where the keystone projects lower than the other voussoirs. Following Giulio Romano , Mannerist architects of the 16th century often designed arches with enlarged and slightly dropped keystones, as in the "church house" entrance portal at Colditz Castle . Numerous examples are found in the work of Sebastiano Serlio , a 16th-century Italian Mannerist architect. Keystone
54-650: A nickname for the Province of Manitoba Keystone Centre , an arena and exhibition centre in Brandon, Manitoba Fictional locations [ edit ] Keystone City , home of the comic book character The Flash Keystone City, a holographic city in the Star Trek: The Next Generation episode " Emergence " Railroads [ edit ] Keystone Corridor , a rail corridor from Philadelphia to Pittsburgh Keystone Service ,
72-710: A current New York-Harrisburg service Keystone (Amtrak train, 1979–1981) , a predecessor of the current service Keystone (Amtrak train, 1971–1972) , a former New York-Pittsburgh service operated by Amtrak Keystone , a former New York-Washington service operated by the Pennsylvania Railroad Keystone (train) , a lightweight train used for the service Sports [ edit ] Keystone Junior Hockey League , in Manitoba Keystone Cup , Western Canadian Junior "B" ice hockey championship Keystone (horse) ,
90-744: A defunct music club Education [ edit ] Keystone Academy , a private K–12 school in Shunyi, Beijing, China Keystone College , a private college in Pennsylvania, United States Keystone Exam , a standardized test at public schools in Pennsylvania, United States Keystone School , a private K–12 school in San Antonio, Texas, United States Keystone School Online , a private for-profit online K–12 school based in Herndon, Virginia, United States Keystone, an education program at
108-453: A developer of digital entertainment software Keystone Aircraft Corporation Keystone Bridge Company , an American bridge building company Keystone (beer brand) Keystone Camera Company Keystone (gasoline automobile) Keystone (steam automobile) Keystone Pipeline , a crude oil pipeline Keystone-SDA/Keystone-ATS , a Swiss press agency Keystone View Company , a US photo agency Keystone (Berkeley, California) ,
126-1077: A larger effect on their environment than is purely due to their abundance Operation Keystone , during World War II Keystone, a variety of screwdriver blade "Keystone", a descriptive reference to the Book of Mormon The Keystone , journal of the Pennsylvania Railroad Technical and Historical Society The Keystone , Pennsylvania news website owned by Courier Newsroom See also [ edit ] [REDACTED] Search for "keystone" or "key-stone" on Misplaced Pages. All pages with titles containing key-stones All pages with titles containing key-stone All pages with titles containing keystones All pages with titles containing keystone Stone (disambiguation) Key (disambiguation) The Stone Key (2008 novel) post-apocalyptic novel by Isobelle Carmody Stone Key Partners (bank) U.S. boutique investment bank Topics referred to by
144-505: A racehorse Other uses [ edit ] Keystone (limestone) , quarried in the Florida Keys Keystone effect , caused by projecting an image onto a surface at an angle, or by photography at an angle Keystone Initiative , a medical protocol to reduce infection rates Keystone module , a type of data connector mounted in walls and patch panels Keystone Press Awards Keystone species , species that have
162-663: A town near Mount Rushmore Keystone, West Virginia Keystone, Wyoming Keystone at the Crossing , a business/shopping district in Indianapolis, Indiana The Fashion Mall at Keystone , located in the Keystone shopping district Keystone Heights, Florida Keystone Canyon , Alaska Keystone Lake , a resort area near Tulsa, Oklahoma Keystone, Wisconsin Canada [ edit ] The "Keystone Province",
180-438: Is different from Wikidata All article disambiguation pages All disambiguation pages Keystone (architecture) Keystones or their suggested form are sometimes placed for decorative effect in the centre of the flat top of doors, recesses and windows, so as to form an upward projection of a lintel , as a hallmark of strength or good architecture. Although a masonry arch or vault cannot be self-supporting until
198-480: Is often used metaphorically for an essential part on which the whole depends or as an acme of the whole. The U.S. state of Pennsylvania calls itself the "Keystone State", because during early American history, it held a crucial central position among the Thirteen Colonies geographically, economically, and politically, like the keystone in an arch. A keystone is a symbol of Pennsylvania, being used in
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#1732772727533216-475: The Hercules constellation United States [ edit ] The "Keystone State", nickname for the U.S. Commonwealth of Pennsylvania Keystone, Colorado , a town Keystone Resort , the related ski resort Keystone, Florida , an unincorporated community Keystone, Indiana Keystone, Iowa Keystone, Nebraska Keystone, North Dakota Keystone, Ohio Keystone, South Dakota ,
234-526: The Book of Mormon may become the keystone of our lives." [REDACTED] Media related to keystones at Wikimedia Commons Keystone, Wyoming Keystone is an unincorporated community in Albany County , Wyoming , United States. The population of Keystone was recorded as 374 in the 1930 census but declined to 169 by 1940. In 1950, Keystone had a population of 120. Keystone once featured
252-524: The U.S. National Defense University Entertainment [ edit ] Keystone (video game) , part of the Xbox Live Arcade title Fable 2 Pub Games Keystone (band) , led by jazz trumpeter Dave Douglas Keystone (album) , a 2005 album by the band Keystone Cops , a silent movie series Keystone Kapers , a classic Atari game Keystone Studios , a movie studio Places [ edit ] The Keystone asterism in
270-493: The builders refused is become the head stone of the corner", is taken to refer to Jesus. Referring to the Book of Mormon , Joseph Smith said that it "was the most correct of any book on earth, and the keystone of our religion, and a man would get nearer to God by abiding by its precepts, than by any other book." Ezra Taft Benson , the 13th president of the Church of Jesus Christ of Latter-day Saints , said it "is my prayer that
288-443: The keystone is placed, the keystone experiences the least stress of any of the voussoirs , due to its position at the apex. Old keystones can decay due to vibration, a condition known as bald arch . In a rib-vaulted ceiling, keystones commonly mark the intersections of any two or more arched ribs. For aesthetics, keystones are often larger than ribs in vaults and many of the voussoirs (arch stones) in arches, or embellished with
306-690: The logos of many Pennsylvania government departments, in Pennsylvania state route signs , and on Pennsylvania car license plates , and the Shoulder Sleeve Insignia of the Pennsylvania National Guard's 28th Infantry Division (United States) , a Red Keystone, first adopted during World War I in October 1918. In Christianity, Psalms 118:22, translated in the Authorized Version as "The stone which
324-452: The same term [REDACTED] This disambiguation page lists articles associated with the title Keystone . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Keystone&oldid=1245612808 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description
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