Repair and Strengthening of Old Steel Truss Bridges
During the early 1900's, numerous pin jointed steel bridge trusses were constructed throughout the United States. In the intervening years, these trusses were replaced by...
Fatigue Cracking�Problem for Welded Steel Bridges
A recent problem with welded steel bridges is fatigue cracking at welded details. Fatigue cracks begin in small flaws or discontinuities at welded connections and grow to a critical size...
New River Gorge Bridge: World's Longest Steel Arch
For 45 years, the Bayonne Bridge had reigned as the world's longest steel arch bridge. No longer. The New River Gorge Bridge in West Virginia has a steel arch spanning 1700...
Building New Bridges from Old
The Duluth, Missabe and Iron Range Railway Co. needed a new 150-ft (64-m) two-span railroad bridge. Minimum time and low cost were the demands. In response, the designers used steel girders...
Dredge-and-Fill Saves $2 Million at Steel Mill Built in Swamp
The Georgetown Texas Steel Corp., in late 1973, accepted the challenge of developing a previously cleared cypress swamp on the east side of the Neches River across from Beaumont, Texas....
New River Gorge Bridge: World's Longest Steel Arch
The world's longest steel arch bridge, spanning the New River Gorge Bridge in the south central area of West Virginia, is scheduled to be completed in Sept. 1977. The main...
Exxon's Offshore Platform Nearly Doubles Water-Depth Record
In 1976, Exxon erected near Santa Barbara (Los Angeles metropolitan area) the Hondo platform, in 850 ft of water. This is nearly twice the previous record depth established in the North...
Bridge Erection by Launching is Fast, Safe, and Efficient
The construction of long prestressed concrete bridges without using formal falsework or self-supporting launching falsework is described. Using the so-called incremental launching method...
Precast Veneer Replaced By All-Precast Structure
Utilizing engineering solutions to architectural problems greatly enhanced the architectural appearance of this building. Long-span prestressed, light weight concrete beams, post-tensioned...
The Querverschub of the 2,000-ft Oberkassel Bridge
In 1976 West German bridge engineers undertook the moving of the largest structure ever moved in one piece and in such a short period of time. The Oberkassel Bridge connecting Dusseldorf...
King Post Truss System Cuts Roof Framing Cost by 30%
The design was based on requirements for minimally obstructed sight lines (Robin Hood Dell Open-Air Theater, Philadelphia, Pa.) for outdoor seating and a tight construction budget of $4,500,000....
Pasco-Kenneewick Bridge�� The Longest Cable-Stayed Bridge in North America
This 2503-ft long structure, built in an earthquake zone, is only the second of its kind to be constructed in the U.S. It boasts a continuous concrete girder, supported from steel cables...
Rebar Splices: Cutting Costs, Avoiding Errors
Practical advice for cost-cutting in reinforced concrete construction suggests improvements in accepted design and specifications, procedures and specific items. Brief recommendations...
The Modernization of a Small Hydro Plant
The Cornell Hydro in Northern Wisconsin was torn down, rebuilt, re-equipped and put into profitable operation. After extensive structural modifications to the old plant, three new 10,000...
James B. Eads and His St. Louis Bridge
Eads Bridge at St. Louis, a century old engineering achievement, was designed, promoted, and built by an intensely dedicated and self-educated man, James B. Eads. This structure was an...
Philadelphia Bridge Sparked Growth of Prestressed Concrete in the U.S.
Prestressing has been used for centuries. For instance, iron bands were heat-shrunk over built-up wooden wheels to increase their resistance to damage. In 1888, a man named Jackson from...
Design/Construct Companies�� Builders for Industry
Highlights in the evaluation of design/construct companies. How Koppers is establishing better dialog with all 7,000 professional employees. How Fluor has grown thanks to gutsy hiring...
George Washington Bridge Redecked with Prefabricated, Prepaved Steel Panels
The Port Authority of New York and New Jersey has embarked on a �37,000,000 project to totally replace the upper roadway of the 46-yr old George Washington Bridge. The scheme, chosen from...
State-of-the-Art Report Composite or Mixed Steel-Concrete Construction for Buildings
This report examines the interacting behavior of concrete with structural steel in building construction. Topics covered include composite columns, composite beams, trusses, and slabs,...
Kansas City Bank Tower Features Water-Filled Columns, Exposed Spandrels
In this first article in a series on recent innovations in structural steel design, the spotlight is on the 20-story Mercantile Bank Tower in Kansas City. This structure features several...
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