Post-Tensioned Foundations as Economical Alternative
Although post-tensioned (p-t) foundations have been utilized in the U.S. since the early 1960s, the last five years have witnessed a substantial increase in their implementation. Used...
Willow Island Aftermath: The Limits of OSHA
In April 1978 a natural-draft hyperbolic concrete cooling tower under construction at Willow Island, W.Va. collapsed. Fifty-one workers, suspended on a scaffold supported mainly by a layer...
The Concrete Canoe: A Technological Challenge
In 1970 the first concrete canoe was built, and since that time many colleges and universities have built and raced concrete canoes. The Union College (Schenectady, NY) Stone Boat Club...
Re-decking a Bridge With Precast Concrete
Re-decking a 1627-ft deck girder bridge on the Pennsylvania Turnpike with precast concrete slabs allowed the bridge to remain partially open to traffice during the entire construction...
Baltimore Borrows Bridge Beams
A look at the construction of the Baltimore Convention Center, its four domelike exhibition halls, the main lobby and its service areas. The Center's four columnless exhibit...
Vail Pass Highway�Respecter of Mountain Ecology
Environmental constraints to a large degree controlled both the design and construction of a 14-mi segment of Interstate Highway 70 through Vail Pass in Colorado and necessitated adoption...
Parrotts Ferry Bridge: Pioneer in Lightweight, Pumped Concrete
Spanning the Stanislaus River in Northern California, this bridge includes a 640-ft center span that is the world's longest span in lightweight concrete and the longest bridge...
Five-Story Timber Framed Building
Multi-story glu-lam frames used as a structural system in the Terman Engineering Center, Stanford University. Covers the problem and solution of combining timber framing with reinforced...
Pavement Recycling Catching On
Sparked by rising prices of asphalt, aggregates, energy, and construction labor, and plagued by a decline in the real dollars available for highway and road maintenance, many highway departments...
Tarbela Dam�Problems Solved by Novel Concretes
While constructing the world's largest embankment dam, Tarbela in Pakistan, the designers and contractors faced unprecedented flow volumes and velocities, causing severe cavitation...
Fracture in Concrete
Proceedings of a session at the ASCE National Convention held in Hollywood, Florida, October 27-31, 1980. Sponsored by the Committee on Properties of Materials of the ASCE Engineering...
101 Uses for Earth Reinforcement
A mini-symposium on earth reinforcement held at the April 1978 ASCE national convention attracted participants from around the world; symposium papers form the basis of this paper. Methods...
Steel Plate Shear Walls Resist Lateral Load, Cut Costs
Two new buildings have a seldom-used stiffening system�� steel plate shear walls. Reasons for using them, rather than reinforced concrete shear walls or steel or concrete rigid frames,...
Top-to-Bottom Construction in High-Rise Buildings
This top-to-bottom construction method, called jackblock is a cousin of lift-slab. The main components are the jack and concrete block, hence the name. The top story of a building is constructed...
Design and Construction of Long-Span Metal Culverts
Long-span metal culverts are built of corrugated-metal plates bolted together. They have spans exceeding 15 ft. Principal applications include use as drainage structures, grade separations,...
World's Tallest Offshore Platform Stands in 1025 Ft of Water
During the summer and fall of 1977 and 1978, Shell Oil installed the world's deepest drilling and production platform in water. Located in 1025-ft of water at the Cognac tract...
Concrete Microwave Tower is Award Winner
A microwave tower in Florida was built of cast-in-place concrete instead of steel, because: (1)Concrete was considered more esthetic than steel; and (2)concrete was more resistant than...
Intercity Bridge: First Major U.S. Cable-Stayed Bridge
The Intercity Bridge spans the Columbia River, connecting the cities of Pasco and Kennewick, Wash. It is the longest cable-stayed, concrete bridge in the U.S. (2,403-ft) and it has been...
Largest Inverted Shell Houses Two Theaters
A meeting center in Albany, New York, has such a complex shape that it took months just to design its surface mathematically. Perched on a pedestal, it is nearly elliptical in plan. From...
Modern Engineering Saves Troubled Dam
A badly deteriorated and potentially unsafe dam has been recycled. The 135-ft-high, 300-ft-long LaPrele Dam is a concrete slab-and-buttress structure. Its sloping face slab has leaked...
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