Ecology and the Past
Archaeologists and paleontologists have gathered an overpowering amount of evidence to show that modern methods of construction, both in the field of highways and in that of architectural...
Fabric Roofs Feel the Pressure
Plastic-coated fabric roofs have been growing in popularity with uses ranging from covering a football stadium in Michigan to housing satellite-tracking stations. Article takes a look...
502-ft Diameter Laminated-Timber Dome Provides Fast, Low-Cost Cover for Arizona Stadium
Varex Dome, a 502-ft diameter engineering marveel of glue laminated timber, was built in record six months erection time. This dome shell structure forms both walls and roof for the new...
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...
Computer Slashes Time and Cost of Structural Design
An existing computer program for designing floor framing was modified to simplify usage. A preprocessor program was written to reduce the amount and complexity of the input data. A description...
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...
Milestones in U.S Civil Engineering
Under the general titles of structures, transportation, water resources and sanitary, milestones in American civil engineering are listed in chronological order. An emphasis is placed...
1842: Old Croton Aqueduct Brings Water, Rescues Manhattan From Fire, Disease
From 1774 to 1835 Manhattan experienced tremendous growth but needed better water supply to protect public health and to fight fires. Several proposals for providing water were forwarded...
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...
Concrete Canoe Racing Stimulates Interest in ASCE Student Chapter
Concrete Canoe construction and racing have become a very popular ASCE Student Chapter activity. Such a program can publicize a chapter's activities in general and can serve...
Nambe Falls Dam�First Mechanically Prestressed Concrete Dam in U.S.
An unusual combination of a curved earth embankment, a concrete gravity thrust block, and concrete thin arch prestressed with embedded vertical flat jacks has created Nambe Falls Dam,...
Precast Liners May Cut Tunnel Cost 25%
On the Bureau of Reclamation's Buckskin Mountain's Tunnel in Arizona, the low bid was for $58,000,000, about $21,000,000 less than the low bid for design using...
Why Do Bridges Fail�
From the study of 143 bridge failures that occurred throughout the world from 1847 to 1975, it is found that there are nine categories of failure. The most frequent of these is failure...
The Story of Cement, Concrete and Reinforced Concrete
When the dawn of history, man has sought for materials to cement stone and brick together. When rebuilding the Eddystone lighthouse in 1756, John Smeaton recognized ordinary lime morter...
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...
Tiebacks Support Excavations Without Bracing
Tiebacks are used to support earth retaining walls in deep excavations without using internal bracing. Although more expensive than bracing to construct, tiebacks can result in overall...
Dallas Expressway Quickly Rehabilitates With Aid of Giant Cold-Milling Machine
The Dallas, Texas Central Expressway, one of the most intensively used roads in the U.S., was plagued by a deteriorating and bumpy surface, and poor skid resistance. The pavement consisted...
Texas Uses Fabric to Protect Pavement from Cracks
Thin asphalt concrete overlays are susceptible to reflective cracking, which is the migration of the cracks in an old pavement into and subsequently through its overlay. To find a remedy...
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,...
Stability of Structures Under Static and Dynamic Loads
Proceedings of the International Colloqium on Stability of Structures Under Static and Dynamic Loads, held in Washington, D.C., May 17-19, 1977. Sponsored by the National Science Foundation....
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