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Jaroslav Josef Polívka
Jaroslav Josef Polivka (20 April 1886 – 9 February 1960), Czech structural engineer who collaborated with Frank Lloyd Wright between 1946 and 1959. Jaroslav Josef Polivka a.k.a. J. J. Polivka Civil Engineer was born in Prague in 1886. He received his undergraduate degree in structural engineering at the College of Technology in Prague in 1909. He then studied at the Federal Polytechnic Institute in Zurich, Switzerland and at the Prague Institute of Technology, where he earned a doctoral degree in 1917. After serving in the First World War, he opened his own architectural and engineering office in Prague and developed his skills in stress analysis of reinforced concrete, pre-stressed reinforced concrete and steel structures. Polivka became an expert in photo-elastic stress analysis, a technique that examines small-scale transparent models in polarized light. In Prague Polivka worked together with avant-garde Czech architect Josef Havlíček on the Habich Building (1927–28) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frank Lloyd Wright
Frank Lloyd Wright Sr. (June 8, 1867 – April 9, 1959) was an American architect, designer, writer, and educator. He designed List of Frank Lloyd Wright works, more than 1,000 structures over a creative period of 70 years. Wright played a key role in the architectural movements of the twentieth century, influencing architects worldwide through his works and mentoring hundreds of apprentices in his Taliesin Fellowship. Wright believed in designing in harmony with humanity and the environment, a philosophy he called ''organic architecture''. This philosophy was exemplified in ''Fallingwater'' (1935), which has been called "the best all-time work of American architecture". Wright was a pioneer of what came to be called the Prairie School movement of architecture and also developed the concept of the Usonian home within Broadacre City, his vision for urban planning in the United States. He also designed original and innovative offices, churches, schools, skyscrapers, hotels, museum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eduardo Torroja
Eduardo Torroja y Miret, 1st Marques of Torroja (27 August 1899 – 15 June 1961) was a Spanish structural engineer and a pioneer in the design of concrete shell structures. Education Torroja was born in Madrid where he studied civil engineering. Career In 1923 Torroja began work for the Hidrocivil company, headed by the engineer José Eugenio Ribera. He planned and directed various types of projects, including the foundations of bridge piers, bridges, water supply and sanitation works, and various urban buildings. Torroja's first large project was the Tempul cable-stayed aqueduct (1926) in Guadalete, Jerez de la Frontera, in which he used pre-stressed girders. In 1928 he established his own office. Modesto López Otero, director for the Madrid University City (''Ciudad Universitaria de Madrid'') project, formed a diverse team of young architects to design the various buildings. Torroja joined the group in 1929. He worked with Manuel Sánchez Arcas, sharing his interes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Structural Engineers
Structural engineers analyze, design, plan, and research structural components and structural systems to achieve design goals and ensure the safety and comfort of users or occupants. Their work takes account mainly of safety, technical, economic, and environmental concerns, but they may also consider aesthetic and social factors. Structural engineering is usually considered a specialty discipline within civil engineering, but it can also be studied in its own right. In the United States, most practicing structural engineers are currently licensed as civil engineers, but the situation varies from state to state. Some states have a separate license for structural engineers who are required to design special or high-risk structures such as schools, hospitals, or skyscrapers. In the United Kingdom, most structural engineers in the building industry are members of the Institution of Structural Engineers or the Institution of Civil Engineers. Typical structures designed by a structu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University At Buffalo, The State University Of New York
The State University of New York at Buffalo (commonly referred to as UB, University at Buffalo, and sometimes SUNY Buffalo) is a public university, public research university in Buffalo, New York, Buffalo and Amherst, New York, United States. The university was founded in 1846 as a private medical college and merged with the State University of New York system in 1962. It is one of two flagship institutions of the SUNY system, along with Stony Brook University. As of fall 2023, the university enrolled nearly 32,000 students in 13 schools and colleges, making it the largest public university in the state of New York. Since its founding by a group which included future United States president Millard Fillmore, the university has evolved from a small medical school to a large doctoral university, research university. Today, in addition to the College of Arts and Sciences, the university houses the largest state-operated University at Buffalo School of Medicine and Biomedical Scien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Society Of Civil Engineers
The American Society of Civil Engineers (ASCE) is a tax-exempt professional body founded in 1852 to represent members of the civil engineering profession worldwide. Headquartered in Reston, Virginia, it is the oldest national engineering society in the United States. Its constitution was based on the older Boston Society of Civil Engineers from 1848. ASCE is dedicated to the advancement of the science and profession of civil engineering and the enhancement of human welfare through the activities of society members. It has more than 143,000 members in 177 countries. Its mission is to provide essential value to members, their careers, partners, and the public; facilitate the advancement of technology; encourage and provide the tools for lifelong learning; promote professionalism and the profession; develop and support civil engineers. History The first serious and documented attempts to organize civil engineers as a professional society in the newly created United States were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berkeley, California
Berkeley ( ) is a city on the eastern shore of San Francisco Bay in northern Alameda County, California, United States. It is named after the 18th-century Anglo-Irish bishop and philosopher George Berkeley. It borders the cities of Oakland, California, Oakland and Emeryville, California, Emeryville to the south and the city of Albany, California, Albany and the Unincorporated area, unincorporated community of Kensington, California, Kensington to the north. Its eastern border with Contra Costa County, California, Contra Costa County generally follows the ridge of the Berkeley Hills. The 2020 United States census, 2020 census recorded a population of 124,321. Berkeley is home to the oldest campus in the University of California, the University of California, Berkeley, and the Lawrence Berkeley National Laboratory, which is managed and operated by the university. It also has the Graduate Theological Union, one of the largest religious studies institutions in the world. Berkeley is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Podolsko Bridge
The Podolsko Bridge is an arch bridge that spans the Vltava between Podolsko and Temešvár in Písek District, Czech Republic. At the time of its completion in 1942, it was the longest arch bridge in Czechoslovakia. In May 1945 during World War II, elements of the U.S. 4th Armored Division took over the western end of the bridge and near by village of Temesvar, marking the farthest point the Western Allied Powers moved East on the Western Front. Design was by the Ministry of Public Works. Experimental Stress Analysis photoelasticity was by Jaroslav Josef Polívka of the University of California. After the Orlík Dam was completed in 1961, the Vltava rose 19 meters and covered part of the supports. References *"Contractor Meets Close Design Tolerances in Building Long-Span Concrete Arch Bridge" J. J. Polivika, ''Civil Engineering'', ASCE American Society of Civil Engineers The American Society of Civil Engineers (ASCE) is a tax-exempt professional body founded in 1852 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photoelasticity
In materials science, photoelasticity describes changes in the optical properties of a material under mechanical deformation. It is a property of all dielectric media and is often used to experimentally determine the stress distribution in a material. History The photoelastic phenomenon was first discovered by the Scottish physicist David Brewster, who immediately recognized it as stress-induced birefringence. That diagnosis was confirmed in a direct refraction experiment by Augustin-Jean Fresnel. * Reprinted in H. de Senarmont, E. Verdet, and L. Fresnel (eds.), ''Oeuvres complètes d'Augustin Fresnel'', vol. 1 (1866)pp. 713–18* Translated as Experimental frameworks were developed at the beginning of the twentieth century with the works of E.G. Coker and L.N.G. Filon of University of London. Their book ''Treatise on Photoelasticity'', published in 1930 by Cambridge Press, became a standard text on the subject. Between 1930 and 1940, many othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco Bay
San Francisco Bay (Chochenyo language, Chochenyo: 'ommu) is a large tidal estuary in the United States, U.S. state of California, and gives its name to the San Francisco Bay Area. It is dominated by the cities of San Francisco, California, San Francisco, San Jose, California, San Jose, and Oakland, California, Oakland. The San Francisco Bay drains water from approximately 40 percent of California. Water from the Sacramento River, Sacramento and San Joaquin River, San Joaquin rivers, and from the Sierra Nevada mountains, flow into Suisun Bay, which then travels through the Carquinez Strait to meet with the Napa River at the entrance to San Pablo Bay, which connects at its south end to San Francisco Bay. It then connects to the Pacific Ocean via the Golden Gate strait. However, this entire group of interconnected bays is often called the ''San Francisco Bay''. The bay was designated a Ramsar Convention, Ramsar Wetland of International Importance on February 2, 2013, and the Port ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Crossing (California)
The Southern Crossing is a proposed highway structure that would span San Francisco Bay in California, somewhere south of the San Francisco–Oakland Bay Bridge and north of the San Mateo–Hayward Bridge. Several proposals have been made since 1947, varying in design and specific location, but none of them have ever been implemented because of cost, environmental and other concerns. History Origins The idea for the Southern Crossing dates back to the 1940s when several additional bridges across San Francisco Bay were studied. After the Bay Bridge crossing opened in 1936, connecting Rincon Hill in San Francisco with the Key Mole in Oakland via two high-level bridges and Yerba Buena Tunnel, a tunnel through Yerba Buena Island, vehicle traffic exceeded estimates almost immediately; by 1945, even with gasoline rationing, traffic was 191% of the estimates made during planning, and would reach an average of 69,000 vehicles per day by 1946. A second crossing was deemed necessary an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive with a respective county. The city is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the United States by both population and urban area. New York is a global center of finance and commerce, culture, technology, entertainment and media, academics, and scientific output, the arts and fashion, and, as home to the headquarters of the United Nations, international diplomacy. With an estimated population in 2024 of 8,478,072 distributed over , the city is the most densely populated major city in the United States. New York City has more than double the population of Los Angeles, the nation's second-most populous city. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solomon R
Solomon (), also called Jedidiah, was the fourth monarch of the Kingdom of Israel and Judah, according to the Hebrew Bible. The successor of his father David, he is described as having been the penultimate ruler of all Twelve Tribes of Israel under an amalgamated Israel and Judah. The hypothesized dates of Solomon's reign are from 970 to 931 BCE. According to the biblical narrative, after Solomon's death, his son and successor Rehoboam adopted harsh policies towards the northern Israelites, who then rejected the reign of the House of David and sought Jeroboam as their king. In the aftermath of Jeroboam's Revolt, the Israelites were split between the Kingdom of Israel (Samaria), Kingdom of Israel in the north (Samaria) and the Kingdom of Judah in the south (Judea); the Bible depicts Rehoboam and the rest of Solomon's Patrilineality#In the Bible, patrilineal descendants ruling over independent Judah alone. A Prophets in Judaism, Jewish prophet, Solomon is portrayed as wealth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
