Engineering

A gift of John F. Harbeson, the archive consists of Cret's student and professional work and is displayed on approximately four hundred and seventy-six sheets containing one or more drawings, photos, or prints per sheet. The archival holdings may be broadly divided into eighty-eight sheets of student work at the Ecole des Beaux Arts in Lyon and Paris, fifty-three student and professional watercolors, thirteen sheets of bookplates, seals, medals and title pages, fifty-six sheets of competitions (thirty-two of various university designs), nine sheets of commercial work, one hundred and two of memorials, twenty-two sheets of government buildings, twelve residential designs, twenty-one sheets of bridge designs, five sheets of watercolors and ink sketches by Col. Oscar Lahalle (Cret's father-in-law), and one hundred and eleven sheets of varied design work.

Begun in 1867 and completed in 1874, the Eads Bridge was named after its designer, James Buchanan Eads. It was the first bridge to span the Mississippi at St. Louis, the first bridge to make significant of steel, and one of the first bridges in the U.S. to make use of pneumatic caissons (the caissons sunk for the bridge are still among the deepest ever). It was also the first bridge to be built entirely using cantilever construction methods, avoiding the need for falsework, and the first bridge designed so that any part could be removed for repair or replacement. The bridge is now a National Historic Landmark.

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.

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.

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

This an historic occasion. Today we are gathered here to dedicate a famous pioneer structure -- the oldest cable suspension highway bridge in the world -- as a national monument. Because this span has played a dramatic and significant role in the development of bridge engineering, and because its outstanding record of more than a century of distinguished service is interwoven with the unfolding panorama of American history, it is altogether fitting and proper that the shrine to thrill and inspire future generations.

When this great structure -- the first bridge over the Ohio River -- was completed in 1849, it was truly notable achievement. Its span of 1,010 feet was by far the longest in the world, the first time human courage and resourcefulness had achieved a span exceeding one-thousand feet.

This bridge almost did not see daylight; in fact, when it was realized that a railway link was necessary between both shores of river Forth, the solution brought forward was a tunnel. After a few studies,this approach was abandoned in 1806 and the idea of building a bridge was put forward. In 1818 a few designs were presented, namely the one submitted by Mr.James Anderson. The structure of the bridge was so light and not very strong and was described later as " such a light structure that it would almost have been impossible to see it on a somber day, and after a strong rainfall, it could not been seen anymore!" In 1865, a parliament resolution authorized the "North British Railway", and his engineer Thomas Bouch, to construct a bridge over the Forth. He proposed a suspended bridge with twin aprons of 1600 feet each. Engineer Bouch was also responsible for the bridge construction over the Tay river, which brough him lots letters of patent nobility.

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 died during the public inquest into the failure of the high girders of the Tay Bridge at his country retreat in Moffat, and is buried at the Dean Cemetery in Edinburgh.

He was the engineer to the Edinburgh and Northern Railway during which time he designed the train ferry crossing between Granton and Burntisland.

Afterwards he became a consulting engineer. As an engineer he had a reputation for being able to build lines very cheaply. He went on to design many short distance lines for companies which could not afford heavy engineering.

ELLET, Charles, civil engineer, was born at Penn's Manor, Bucks co., Penn., Jan. 1, 1810, son of Charles and Mary (Israel) Ellet, and grandson of Charles and Hannah (Carpenter) Ellet. His father, a farmer, was a member of a well-known Quaker family and his mother, daughter of Israel Israel of Philadelphia was one of the most remarkable women of her time, being alluded to by a Philadelphia journal as the "American Cornelia." The son was brought up on his father's farm and attended school at Bristol, Pa. From his earliest years he had shown an unusual talent and fondness for mathematics and at the age of sixteen had far outgrown the scope of the school's mathematical curriculum. After a course of study at the Ecole Polytechnique, Paris, France, he secured employment on various engineering works becoming first assistant and soon afterward chief engineer of the James river and Kanawha canal. His attention at this time was devoted chiefly to the study of methods of inland communication, more particularly suspension bridges, and in 1841-42, he constructed the wire suspension bridge across the Shuylkill river at Fairmont, the first of its kind in America.