A More Perfect Union
Established to promote greater public understanding of the United States Constitution, the National Constitution Center facility in Philadelphia is a structure of complex geometries articulated...
Flexural Behavior of Slender Post-Tensioned Masonry Walls
The 2002 edition of the Masonry Standards Joint Committee (MSJC, 2002) design provisions for masonry structures includes a chapter on the design of post-tensioned masonry (PTM) walls with...
Overview of Structural Behavior of Members Subjected to Torsion
The torsion strength of concrete beams depends on many factors, such as the amount of reinforcement, the volumetric ratios of longitudinal and transverse steel bars, the concrete strength,...
Advances in Analytical Modeling of Torsional Members
The basic formula for calculating the torsional strength of reinforced concrete members was developed by Rausch (1929) using the space truss concept. Unfortunately, Rausch's equation may...
Enduring Strength
The long-term effectiveness of posttensioning in bridges depends on the resiliency of the tendons, and various factors related to construction and marine environments come into play. How...
Frozen Ground Engineering
This new edition gives a peerless presentation of soil mechanics for frozen ground conditions and a variety of frozen ground support systems used on construction project worldwide. An...
Can Less Be More?
With its higher strength and improved performance characteristics, high-performance steel is indeed an alluring materials. Its cost, however, also is higher, a factor that cannot be ignored....
Preserving Pisa's Treasure
Pisa's bell tower, a prime example of Romanesque architecture, would be renowned even if it did not lean. Construction of the tower began in 1173 and was not completed until...
Deep Freeze
In engineering, overcoming a failure can sometimes be more instructive than completing a project with unqualified success. Such was the case with the collapse and repair of a force main...
Effect of Aluminum Compression on ACSR Conductor Sags at High Operating Temperatures
Deregulation and restructuring are sweeping the electric utility industry in the United States. As a result, many utility engineers are analyzing, re-rating, and upgrading their most critical...
Making the Most of HPC
Developing high-performance concrete (HPC) was only the first step toward bringing a material with improved durability, strength, constructability, and mechanical properties to the bridge...
New Concepts in Structural Strength Assessment for Large Buildings in Fire
This paper presents theoretical descriptions of the key phenomena that govern the behaviour of composite framed structures in fire. These descriptions have been developed in parallel with...
Cyclic Behavior of Three-Dimensional Partially-Restrained Composite Connections
This paper describes the test of a full-scale, bi-directional, PR composite beam-to-column connection. The PR connection consisted of continuous reinforcement bars across the column and...
Concrete Delivers
The latest addition to the skyline of Shanghai, China, is a strikingly slender all-concrete 62-story office tower. It is the city's tallest all-concrete building, achieving...
Bridge to the Future
An arched footbridge under construction in Seoul, South Korea, that is reconnecting the metropolis with a tranquil island, will demonstrate the compressive strength and sleek design potential...
Keeping It Together
A new framing system for precast concrete columns and beams will allow tall buildings to withstand large earthquakes without damage to the structural integrity of the building. By using...
Sum of the Parts
As with all of the bay bridges that serve as life lines to the San Francisco peninsula, the 32-year-old San Mateo Bridge needs strengthening to withstand a maximum credible earthquake...
Scenic-Bridge Strengthening (Available in Structural Engineering Special Issue only)
Built in 1937, California's Big Creek Bridge�a double-arch crossing with half-arch side spans�was due for a seismic retrofit. Challenged by the structure's unique...
Inside Job
River Mill Dam is a large Ambursen (buttress type) dam constructed in 1911 on the Clackamas River in Oregon. The preliminary and final design phase of the seismic upgrade project coincided...
Added Protection
The U.S. Bureau of Reclamation is modifying the 335 ft (102 m) high Casitas Dam in Ventura County, California, to withstand a magnitude 6.9 earthquake. The modification includes strengthening...
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