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Shukhov Tower
The Shukhov Radio Tower (russian: Шуховская башня), also known as the Shabolovka Tower (), is a broadcasting tower deriving from the Russian avant-garde in Moscow designed by Vladimir Shukhov. The free-standing steel diagrid structure was built between 1920 and 1922, during the Russian Civil War. History Design Vladimir Shukhov invented the world's first hyperboloid structure in the year 1890. Later he wrote a book, ''Rafters'', in which he proved that the triangular shapes are 20-25% heavier than the arched ones with a ray grating. After that, Shukhov filed a number of patents for a diagrid. He aimed not only to achieve greater strength and rigidity of the structure, but also ease and simplicity through the use of as little building material as possible. The first diagrid tower was built for the All-Russia Exhibition in Nizhny Novgorod in 1896, and later was bought by Yury Nechaev-Maltsov, a well-known manufacturer in the city. Shukhov was responsible ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vladimir Shukhov
Vladimir Grigoryevich Shukhov (russian: link=no, Влади́мир Григо́рьевич Шу́хов; – 2 February 1939) was a Russian Empire and Soviet engineer-polymath, scientist and architect renowned for his pioneering works on new methods of analysis for structural engineering Structural engineering is a sub-discipline of civil engineering in which structural engineers are trained to design the 'bones and muscles' that create the form and shape of man-made structures. Structural engineers also must understand and ca ... that led to breakthroughs in industrial design of the world's first hyperboloid structures, diagrid Thin-shell structure, shell structures, tensile structures, gridshell structures, oil reservoirs, Pipeline transport, pipelines, boilers, ships and barges. He is also the inventor of the Shukhov cracking process, first cracking method. Besides the innovations he brought to the oil industry and the construction of numerous bridges and buildings, S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperboloid
In geometry, a hyperboloid of revolution, sometimes called a circular hyperboloid, is the surface generated by rotating a hyperbola around one of its principal axes. A hyperboloid is the surface obtained from a hyperboloid of revolution by deforming it by means of directional scalings, or more generally, of an affine transformation. A hyperboloid is a quadric surface, that is, a surface defined as the zero set of a polynomial of degree two in three variables. Among quadric surfaces, a hyperboloid is characterized by not being a cone or a cylinder, having a center of symmetry, and intersecting many planes into hyperbolas. A hyperboloid has three pairwise perpendicular axes of symmetry, and three pairwise perpendicular planes of symmetry. Given a hyperboloid, one can choose a Cartesian coordinate system such that the hyperboloid is defined by one of the following equations: : + - = 1, or : + - = -1. The coordinate axes are axes of symmetry of the hyperboloid and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science Museum, London
The Science Museum is a major museum on Exhibition Road in South Kensington, London. It was founded in 1857 and is one of the city's major tourist attractions, attracting 3.3 million visitors annually in 2019. Like other publicly funded national museums in the United Kingdom, the Science Museum does not charge visitors for admission, although visitors are requested to make a donation if they are able. Temporary exhibitions may incur an admission fee. It is one of the five museums in the Science Museum Group. Founding and history The museum was founded in 1857 under Bennet Woodcroft from the collection of the Royal Society of Arts and surplus items from the Great Exhibition as part of the South Kensington Museum, together with what is now the Victoria and Albert Museum. It included a collection of machinery which became the ''Museum of Patents'' in 1858, and the ''Patent Office Museum'' in 1863. This collection contained many of the most famous exhibits of what is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Request For Tender
An invitation to tender (ITT, otherwise known as a call for bids or a request for tenders) is a formal, structured procedure for generating competing offers from different potential suppliers or contractors looking to obtain an award of business activity in works, supply, or service contracts, often from companies who have been previously assessed for suitability by means of a supplier questionnaire (SQ) or pre-qualification questionnaire (PQQ). The term "notice inviting tenders" (NIT) is often used in purchasing in India. An ITT differs from a request for quotation (RFQ) or a request for proposal (RFP), in which case other reasons (technology used, quality) might cause or allow choice of the second best offer. An RFP is a request for a price from a buyer but the buyer would also expect suggestions and ideas on how the project work should be done. RFPs are thus focused on more than just pricing/cost, they entail a bit of consulting from the contractor or vendor. The closest equ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Television And Radio Broadcasting Network
Russian Television and Radio Broadcasting Network (RTRN) (russian: Российская телевизионная и радиовещательная сеть) is a unitary enterprise created on August 13, 2001, by decree of the president of the Russian Federation. The company is included in the list of Russian strategic enterprises. RTRN operates Russia’s digital terrestrial television (DTT) network — the largest operating broadcasting network in the world. It consists of 5040 transmission sites and 10,080 transmitters. Almost 75% out of the 5040 transmission sites were built from scratch. RTRN’s DTT services cover 98,4% of the Russian population. RTRN provides terrestrial transmission of 20 must-carry public television channels and three radio stations broadcasting over the territory of the Russian Federation. RTRN also serves other radio and television channels of both all-Russian and regional types distributing the programs of the latter. Multichannel terrestrial ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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