Important Scientists in Geotechical Engineering
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Nilmar Janbu,80 years young. He is a Geotechnical Professor Emeritus at the
Norwegian Technical University, Trondheim, Norway.
For half a century Nilmar Janbu has been a driving force behind thedevelopment of the field of Geotechnics, both in Norway and in the World.
Strong in theory, yet with strong interest in practical applications, his exciting
guidance has been his permanent mark. He has captured many with his so
strong, yet friendly personality.
Nilmar Janbu
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G. G. Stokes (1819-1903)
Stokes established the science of hydrodynamics with his law of viscosity
(1851), describing the velocity of a small sphere through a viscous fluid. Stokes
published papers on the motion of incompressible fluids in 1842-43 and on the
friction of fluids in motion and the equilibrium and motion of elastic solids in
1845. In 1849 Stokes was appointed Lucasian Professor of Mathematics at
Cambridge. In 1851 Stokes was elected to the Royal Society and was secretaryof the Society from 1854 to 1884 when he was elected president. He
investigated the wave theory of light, named and explained the phenomenon
of fluorescence in 1852, and in 1854 theorized an explanation of the
Fraunhofer lines in the solar spectrum. He suggested these were caused by
atoms in the outer layers of the Sun absorbing certain wavelengths. However
when Kirchhoff later published this explanation Stokes disclaimed any prior
discovery. Stokes developed mathematical techniques for application to
physical problems, founded the science of geodesy, and greatly advanced thestudy of mathematical physics in England. His mathematical and physical
papers were published in 5 volumes, the first 3 of which Stokes edited himself
in 1880, 1883 and 1891. The last 2 were edited by Sir Joseph Larmor in 1887
and 1891.
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Prof. Alex Wesley Skempton (June 4, 1914)
Professor Alec Wesley Skempton, Imperial College's first professor of soil
mechanics, was awarded a knighthood in the New Year's honors list forservices to engineering. He has also been nominated as one of the greatest
civil engineers of the 20th century by New Civil Engineer magazine. He
founded the first UK school of soil mechanics in the department of civil
engineering. Professor Skempton served with great distinction as head of the
department of civil engineering. He also acted as consultant on civil
engineering projects throughout the world, perhaps the most notable being the
Mangla dam in Pakistan. More recently, he played a key role in the
investigation following the collapse of the Carsington dam.
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Christian Otto Mohr ( October 8 , 1835 - October 2 , 1918 ) was a German civil
engineer , one of the most celebrated of the nineteenth century . Mohr's interest
had been attracted by the theories of mechanics and the strength of materials ,
and in 1867 , he became professor of mechanics at Stuttgart Polytechnic and,
in 1873 , at Dresden Polytechnic. Mohr had a direct and unpretentious lecturing
style that was popular with his students. In 1874 , Mohr formalised the, until
then only intuitive, idea of a statically determinate structure.
Mohr was an enthusiast for graphical tools and developed the method, for
visually representing stress in three dimensions, previously proposed by Carl
Culmann . In 1882 , he famously developed the graphical method for analysing
stress known as Mohr's circle and used it to propose an early theory of strength
based on shear stress . He also developed the Williot-Mohr diagram for truss
displacements and the Maxwell-Mohr method for analysing statically
indeterminate structures.
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Christian Otto Mohr ( October 8 , 1835 - October 2 , 1918 )
Karl Culmann (July 10, 1821 Dec 9, 1881)
German bridge and railway engineer whose graphic methods of structural
analysis have been widely applied to engineering and mechanics. He wrote the
first book on graphic statics, published in 1866. Stress trajectories are one of
the original topics presented in this book. In 1849-1850, Culmann spent two
years traveling in England and the United States to study bridges, which he
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later wrote about in Germany. He designed numerous bridge structures at the
newly organized Zrich Polytechnicum. The works of Culmann, among other
things, have been taken up for the design of the central arched bridges of the
Eiffel Tower, and were also quoted by Pier Luigi Nervi in his patent on the
construction of reinforced concrete-slab floors.
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