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More Brumfield Time related items:
Hyperboloid Structure  by hi joiney
Properties of hyperboloid structures
Hyperbolic structures have a negative Gaussian curvature, meaning they curve inward rather than outward or being straight. As doubly ruled surfaces, they can be made with a lattice of straight beams, hence are easier to build and, all else equal, stronger than curved surfaces that do not have a ruling and must instead be built with curved beams.
Hyperboloid structures are superior in stability towards outside forces than "straight" buildings, but have shapes often creating large amounts of unusable volume (low space efficiency) and therefore are more commonly used as a purpose driven structure, such as water towers (to support a large mass), cooling towers, and aesthetic features, but their cross section is much more commonly seen in hyperbolic bridges.
With cooling towers, a hyperbolic structure is preferred. At the bottom, the widening of the tower provides higher surface area for water to boil in. As the water first boils and steam rises, the narrowing effect helps provide laminar, or straight vertical flow, and then as it widens out, turbulent flow is enabled and air is more easily mixed with outside air.
Work of Shukhov
Hyperboloid lattice Adziogol Lighthouse by V.G.Shukhov near Kherson, Ukraine, 1911
In the 1880s, Shukhov began to work on the problem of the design of roof systems to use a minimum of materials, time and labor. His calculations were most likely derived from mathematician Pafnuty Chebyshev's work on the theory of best approximations of functions. Shukhov's mathematical explorations of efficient roof structures led to his invention of a new system that was innovative both structurally and spatially. By applying his analytical skills to the doubly-curved surfaces Nikolai Lobachevsky named "hyperbolic", Shukhov derived a family of equations that led to new structural and constructional systems, known as hyperboloids of revolution and hyperbolic paraboloids.
The steel gridshells of the exhibition pavilions of the 1896 All-Russian Industrial and Handicrafts Exposition in Nizhny Novgorod were the first publicly prominent examples of Shukhov's new system. Two pavilions of this type were built for the Nizhni Novgorod exposition, one oval in plan and one circular. The roofs of these pavilions were doubly-curved gridshells formed entirely of a lattice of straight angle-iron and flat iron bars. Shukhov himself called them azhurnaia bashnia ("lace tower", i.e., lattice tower). The patent of this system, for which Shukhov applied in 1895, was awarded in 1899.
Shukhov also turned his attention to the development of an efficient and easily constructed structural system (gridshell) for a tower carrying a large gravity load at the top the problem of the water tower. His solution was inspired by observing the action of a woven basket holding up a heavy weight. Again, it took the form of a doubly-curved surface constructed of a light network of straight iron bars and angle-iron. Over the next twenty years, he designed and built close to two hundred of these towers, no two exactly alike, most with heights in the range of 12m to 68m.
The gridshell of Shukhov Tower in Moscow. Currently under threat of demolition.
At least as early as 1911, Shukhov began experimenting with the concept of forming a tower out of stacked sections of hyperboloids. Stacking the sections permitted the form of the tower to taper more at the top, with a less pronounced "waist" between the shape-defining rings at bottom and top. Increasing the number of sections would increase the tapering of the overall form, to the point that it began to resemble a cone.
By 1918 Shukhov had developed this concept into the design of a nine-section stacked hyperboloid radio transmission tower for Moscow. Shukhov designed a 350m tower, which would have surpassed the Eiffel Tower in height by 50m, while using less than a quarter of the amount of material. His design, as well as the full set of supporting calculations analyzing the hyperbolic geometry and sizing the network of members, was completed by February 1919; however, the 2200 tons of steel required to build the tower to 350m were not available. In July 1919, Lenin decreed that the tower should be built to a height of 150m, and the necessary steel was to be made available from the army's supplies. Construction of the smaller tower with six stacked hyperboloids began within a few months, and Shukhov Tower was completed by March 1922.
Other architects
Hyperboloid lattice Guangzhou TV & Sightseeing Tower
Antoni Gaudi and Shukhov carried out experiments with hyperboloid structures practically simultaneously, but independently, in 1880-1895. Antoni Gaudi used structures in the form of hyperbolic paraboloid (hypar) and hyperboloid of revolution in the Sagrada Famlia in 1910. In the Sagrada Famlia, there are a few places on the nativity facade - a design not equated with Gaudi's ruled-surface design, where the hyperboloid crops up. All around the scene with the pelican, there are numerous examples (including the basket held by one of the figures). There is a hyperboloid adding structural stability to the cypress tree (by connecting it to the bridge). The "bishop's mitre" spires are capped with hyperboloids.
In the Palau Gell, there is one set of interior columns along the main facade with hyperbolic capitals. The crown of the famous parabolic vault is a hyperboloid. The vault of one of the stables at the Church of Colnia Gell is a hyperboloid. There is a unique column in the Park Gell that is a hyperboloid. The famous Spanish engineer and architect Eduardo Torroja designed a thin-shell water tower in Fedala and the roof of hippodrome "Zarzuela" in the form of hyperboloid of revolution. Le Corbusier and Flix Candela used hyperboloid structures (hypar).
A hyperboloid cooling tower was patented by Frederik van Iterson and Gerard Kuypers in 1918.
The Georgia Dome was the first Hypar-Tensegrity dome to be built.
See also
List of hyperboloid structures
Polibino, Lipetsk Oblast - The world's first hyperboloid structure
Tensile structure
Thin-shell structure
List of thin shell structures
Cooling tower
Sam Scorer
Notes
^ "Hyperboloid water tower". International Database and Gallery of Structures. Nicolas Janburg, ICS. 2007. http://en.structurae.de/structures/data/index.cfm?ID=s0037128. Retrieved 2007-11-28.Â
^ Reid, Esmond (1988). "Understanding Buildings". The MIT Press. http://books.google.com/books?id=J42yn0icWAcC&pg=PA35&lpg=PA35&dq=strength+of+hyperboloid+buildings&source=bl&ots=oSSKwVtSNH&sig=7C208D0t5PXtuOtW9ZJtPaHuhcM&hl=en&ei=5pt_SrHOHoK6NYumlOkC&sa=X&oi=book_result&ct=result&resnum=7#v=onepage&q=&f=false. Retrieved 2009-08-09.Â
^ Burry, M.C., J.R. Burry, G.M. Dunlop and A. Maher (2001). "Drawing Together Euclidean and Topological Threads (pdf)". Presented at SIRC 2001 - the Thirteenth Annual Colloquium of the Spatial Information Research Center. Dunedin, New Zealand: University of Otago. http://www.business.otago.ac.nz/SIRC05/conferences/2001/05_burry.pdf. Retrieved 2007-11-28.Â
^ "Fedala Reservoir". International Database and Gallery of Structures. Nicolas Janburg, ICS. 2007. http://en.structurae.de/structures/data/index.cfm?ID=s0002124. Retrieved 2007-11-28.Â
^ "Zarzuela Hippodrome". International Database and Gallery of Structures. Nicolas Janburg, ICS. 2007. http://en.structurae.de/structures/data/index.cfm?ID=s0000430. Retrieved 2007-11-28.Â
^ UK Patent No. 108,863
^ Castro, Gerardo and Matthys P. Levy (1992). "Analysis of the Georgia Dome Cable Roof". Proceedings of the Eighth Conference of Computing in Civil Engineering and Georgraphic Information Systems Symposium. Housing The Spectacle. http://www.columbia.edu/cu/gsapp/BT/DOMES/GEORGIA/g-anal.html. Retrieved 2007-11-28.Â
References
"The Nijni-Novgorod exhibition: Water tower, room under construction, springing of 91 feet span", "The Engineer", 19.3.1897, P.292-294, London, 1897.
William Craft Brumfield, "The Origins of Modernism in Russian Architecture", University of California Press, 1991, ISBN 0-520-06929-3.
Elizabeth Cooper English: rkhitektura i mnimosti: The origins of Soviet avant-garde rationalist architecture in the Russian mystical-philosophical and mathematical intellectual tradition, a dissertation in architecture, 264p., University of Pennsylvania, 2000.
"Vladimir G. Suchov 1853-1939. Die Kunst der sparsamen Konstruktion.", Rainer Graefe, Jos Tomlow und andere, 192 S., Deutsche Verlags-Anstalt, Stuttgart, 1990, ISBN 3-421-02984-9.
External links
Wikimedia Commons has media related to: Hyperboloid structure
International campaign to save the Shukhov Tower
Anticlastic hyperboloid shells
Shells: Hyperbolic paraboloids (hypar)
Hyperbolic Paraboloids & Concrete Shells
Lattice shell structures
Special Structures
Rainer Graefe: ladimir G. uchov 1853-1939 - Die Kunst der sparsamen Konstruktion.,
Gallery
Cooling tower Puertollano, Spain
Water tower with toroidal tank, by Jan Bogusawski in Ciechanw, Poland
Aspire Tower, Doha, Qatar
A hyperboloid Kobe Port Tower, Kobe, Japan.
Sagrada Famlia by Antoni Gaudi, hyperboloid detail of the facade, Barcelona, Spain
Hyperboloid Cathedral in Brasilia by Oscar Niemeyer, Brazil
Hyperboloid Jetd Tower by Karel Hubek, Czech Republic
Partial view of the hyperbolic roof Olympiapark, Munich, Germany, tensile structure
Hyperbolic paraboloid roof on Church Army Chapel, Blackheath, 1965
Categories: Geometric shapes | Hyperboloid structures | Vladimir Shukhov | Tensile architecture | Structural system | Twisted buildings and structures | Russian inventions
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I am a professional writer from Mp3 Player Manufacturers, which contains a great deal of information about ibm t30 price, 7.2 v battery packs, welcome to visit!
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New no box Potter & Brumfield time delay relay CDB-38-70001 $109.99 |
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Potter & Brumfield CDD-38-30014 Time Delay Relay $105.25 |
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5934 NEW Potter & Brumfield CDB-38-70004 Time Delay Rel $105.00 |
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Lot of Potter & Brumfield: CDB-38-70014 Time Delay, 3 $104.99 |
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Potter & Brumfield CDB-38-70006 240V Time Delay Relay $104.95 |
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POTTER & BRUMFIELD CGB-38-79010S TIME DELAY RELAY ***NIB*** $104.00 |
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POTTER AND BRUMFIELD TIME DELAY RELAY CDB-38-70004 NEW $103.00 |
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Potter Brumfield time delay relay R12-3024X4E1 $100.00 |
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NEW NIB POTTER BRUMFIELD CKB-38-71067 TIME DELAY RELAY (32) $100.00 |
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NEW NIB POTTER BRUMFIELD CDF-38-70001 TIME DELAY RELAY (32) $100.00 |
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Potter & Brumfield CDB-38-70015 Time Delay Relay NOS $99.99 |
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AMF Potter & Brumfield Time Delay Relay CDB-38-70006 $99.99 |
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New box opened Potter & Brumfield time delay CLB-51-70120 $99.99 |
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Potter Brumfield CHB-38-70011 Time Delay Relay DPDT 10sec 120VAC $99.00 |
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Potter & Brumfield CDB-38-70006 TIME DELAY RELAY 120VAC $97.49 |
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NEW POTTER + BRUMFIELD TIME DELAY RELAY CUH 41-30020 $96.25 |
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Potter & Brumfield Time Delay Relay CLB-51-30010 0.1 to 10 Seconds $95.00 |
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VINTAGE POTTER BRUMFIELD TIME RELAY CKB-38-70120 SOCKET $95.00 |
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Potter & Brumfield Time Delay Relay CDB-38-70002 0.1 - 5 Seconds $95.00 |
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POTTER & BRUMFIELD TIME DELAY RELAY CDB-38-70002 ~ New in box $94.96 |
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POTTER & BRUMFIELD CN1 TIME DELAY RELAY ON DELAY 0.1 SEC. TO 9990 HOURS NEW* $94.49 |
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Potter Brumfield 10s Time Delay Relays CKB-38-70010 NR $93.49 |
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Potter Brumfield 5.0 s Time Delay Relay CDB-38-70002 NR $93.49 |
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Potter Brumfield 10s Time Delay Relay CDB-38-70003 NR $93.49 |
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Potter Brumfield 30s Time Delay Relay CDB-38-70006 NR $93.49 |
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POTTER & BRUMFIELD CDB-38-70006 TIME DELAY RELAY $92.00 |
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9262 Old-Stock, Potter & Brumfield CLB-51-70010 Relay - Time Delay $90.30 |
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POTTER & BRUMFIELD TIME DELAY CDB-38-70004 $90.00 |
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P&B Potter & Brumfield CGB-38-79010M 120VAC Time Delay Relay $89.99 |
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P&B Potter & Brumfield CGB-38-79010S 120VAC Time Delay Relay $89.99 |
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Potter & Brumfield Model: CB-1006B-70 Time Delay Relay $89.99 |
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Potter & Brumfield Time Delay Relay CLF-41-70010 (4221) $89.99 |
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AMF Potter & Brumfield Time Delay Relay CDB-38-70016 $89.25 |
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POTTER & BRUMFIELD CDB-38-70015 TIME DELAY RELAY ***XLNT*** $89.00 |
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Potter & Brumfield CB-1028D-30 Time Delay Relay 8 Pin $88.95 |
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AMF Potter & Brumfield CDD-38-30003 Time Delay Relay $87.45 |
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Potter & Brumfield CD8-38-70002 Time Delay $85.50 |
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1 NEW POTTER&BRUMFIELD TIME-DELAY RELAY TIME-DELAY RELAY Q2-3 $85.00 |
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1 NEW POTTER&BRUMFIELD CDB-38-70004 TIME DELAY RELAY Q2-4 $85.00 |
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Potter & Brumfield Relay CHB-38-70022 Time Delay Interval 1-60 Sec. 10A (5525) $85.00 |
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Potter Brumfield Time Delay Relay CDB-38-70015 1.8 - 180 seconds $85.00 |
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Potter & Brumfield Time Delay Relay CDB-38-70092 Timer $85.00 |
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Potter & Brumfield Model: CB-1006B-70 Time Delay Relay $84.99 |
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Potter & Brumfield CDB-38-70015 Time Delay Relay 11 Pin $84.95 |
More Brumfield Time related items:
Automation is really a stage up from mechanization simply because it drastically lowers the human psychological and sensory specifications, whereas mechanization assists human operators using the muscular requirements for that function. Automation is regarded as one with the keys so as to facilitate a transaction. Banking and finance establishments innovated some methods to create sure that customers are supplied with their simple desires when looking for solutions from these suppliers. Hospitals along with other health-related fields also make utilization of automation to produce confident that right diagnoses are offered to their respective patients. This is the cause why industrial automation systems have been conceptualized.
