Biographical

Civil engineer.
Born: 26 December 1867 Sandgate, Queensland, Australia. Died: 23 September 1943 Gordeon, New South Wales, Australia.
John Job C. Bradfield was associated with a great range of engineering works including the Cataract and Burrinjuck Dams, the Sydney Underground Railways and Brisbane's Story Bridge. He was, however, best known as one of the original designers of the Sydney Harbour Bridge. For his thesis on the design and construction of the Sydney Harbour Bridge and the city railway system, Bradfield was awarded the degree of Doctor

Othmar Hermann Ammann, partner of the firm Ammann & Whitney, Consulting Engineers, New York, and a member of the National Academy of Engineering, died at his home in Rye, New York, on September 22, 1965, at the age of eighty-six. His passing brought to a close an active, sixty-three-year engineering career during which he came to be known as the "master bridge builder of our time."

The University Avenue Bridge, an impressive adaptation of modern classicism to a limestone-faced, concrete on steel double leaf bascule bridge, carries university Avenue across the Schuylkill River. Its sweeping monumental piers and towers with bridge operator's houses remain visible from many vantage points. This graceful span forms an integral part of its surrounding cityscape, and serves as a visual landmark along the Schuylkill River.

The University Avenue Bridge runs north/south across the Schuylkill River, and links University Avenue in West Philadelphia, with South 34th Street in the Grays Ferry section of South Philadelphia. The bridge which has a clear height of thirty feet, measures 536 feet in length, and 100 feet in width. Five lanes wide, it accommodates four lanes of traffic going in two directions. The bridge has a pedestrian walkway on either side.

Aware that control of the country's river systems would important to both sides in the Civil War, Eads proposed the U.S. government invest in the development of steam-powered, ironclad warships. Eads made his proposal before the war, but his idea was coolly received. When he was awarded a contract, he employed upwards of 4,000 men to build the U.S. ironclad armada that would prove decisive in Union efforts against Forts Henry and Donelson, at Memphis, Island No. 10, Vicksburg, and Mobile Bay. In a remarkable feat Eads turned out his first ironclad 45 days after he began production. The ironclad idea would be adopted by the Confederacy and both sides would improve on Eads' idea throughout the war. After the war Eads found a new project, the spanning of the Mississippi with a suitable bridge to carry everything from people to trains. The self-trained engineer proposed a triple-arch design fabricated from steel. Each span was roughly 500 hundred feet and rested on piers resting on bedrock some 100 feet beneath the river bottom. The building of the arches involved steel supplied by Andrew Carnegie's steel works. Eads required that the 18 inch diameter hollow tubes conform to a test strength of 60,000 pounds. Many times during construction steel was returned to be re-rolled so that it might meet Eads' exacting standards. Keeping the shipping lanes open was necessary during construction, so Eads designed a cantilever system to support the unjoined arches. A system of pulleys stretched over the piers and supported the arches. Eads was also innovative in that he employed a threaded iron plug to close the arches. He allowed five inches on each arch to be used for threading the plug and closing the distance between the arches. The Eads Bridge was the largest of its kind and quickly became world renowned.

David Bernard Steinman: Born on 11 June 1886 in Khomsk, Brest, Belarus. Deceased on 21 August 1960 in New York, New York, USA. Associated with the following firms:Formerly:Founder(s): Robinson & Steinman; Steinman, Boynton, Gronquist & Birdsall; Steinman, Boynton, Gronquist & London.

Paul Philippe Cret, architect, was born in Lyons, France, on October 23, 1876, the son of Paul Adolphe and Anna Caroline (Durand) Cret. He attended a Lycee in Bourg and studied architecture at the L'Ecole des Beaux-Arts in Lyons and the L'Ecole des Beaux Arts, Paris, where he graduated in 1903. At the Paris school he was awarded the Rougevin Prize and the Grand Medal of Emulation, both in recognition of his remarkable skill as a draftsman. In 1903 he was invited to teach architecture at the University of Pennsylvania, where he remained until his retirement in 1937.

Cret’s plan shows that he had learned to manipulate the École’s graphic conventions and to put a program “in order” (see Fig. 13). The contrast between the mosaique, the tapestry of broken lines that represent decorative floor and ceiling patterns, and the poché, the more heavily inked lines that indicate structure, make clear that the arrangement is a linear succession of volumes, with two relatively narrow rooms bracketing the more ample one at the center. The heavy unbroken outline of the main space underscores the lack of windows and reliance on top lighting, and thus its use for paintings and works on paper. The mosaique is more than decoration; it visually interweaves the volumes and defines a broad axial promenade, or path of movement, from the entrance to what is presumably the sidelit sculpture gallery that opens to a cascade of stairs leading down to the garden of fragments. All the pieces of a good Beaux-Arts plan are here: the clear proportions of the independent volumes, the axial disposition of openings, the warp and weft of the details, and the telling use of the graphic conventions of poché and mosaique so the design appears at once simpler than the sum of its parts and more ample than one might expect of a small museum

A self-made man and one of America’s greatest engineers, James Buchanan Eads led a life inextricably intertwined with the nation’s most important waterway, the Mississippi River. He explored the river bottom in a diving bell of his own design; made a fortune salvaging wrecks; in the 1870s built the world's first steel bridge over the Mississippi at St. Louis; then deepened the river at its mouth, turning New Orleans into the second largest port in the nation. By the time of his death in 1887, Eads was widely acknowledged to be one of the most influential men of his day.

Abraham Darby (the Grandfather of the famous bridge builder) was born in 1678 at Wrens Nest in the hamlet of Woodsetton in the Parish of Sedgley, Staffordshire, son of John & Ann Darby.

...The first of a succession of iron manufacturers who bore the same name, he was the son of a Quaker (Society of Friends) farmer residing at Wrens Nest, near Sedgley and served his apprenticeship with a maker of malt-kilns near Birmingham, Later he married and moved to Bristol around 1700, to begin business on his own.

In Bristol he was joined by three partners of the same Quaker persuasion, who provided the necessary capital to enable him to set up works at Baptist Mills, near the city. He carried on the business of malt-mill making and later added brass and iron founding

Thomas Bouch was born on 25th February 1822 in Thursby, Cumberland. He was educated at the village school, although his academic interest is said only to have been stirred by a lesson about moving water uphill. Thomas went on to spend three years as a boarder at the Academy School in Carlisle but the death of his father in 1838 led him to take up an apprenticeship with a firm of mechanical engineers based in Liverpool. Thomas quickly found the position unsuitable and returned to Thursby where he started a job as an assistant to George Larmer, a railway surveyor.