New Home for the Maid: Rockfalls, Talus, and the Race for a Dry Dock
The Maid of the Mist Corporation (MOTMC) has operated the iconic Maid of the Mist boats beneath Niagara Falls since the early 1900s. Traditionally, the company has provided trips from...
Grout Hole Layout
The drilling method, either rotary or percussion, and the type and size of the drills to be used are selected based on such factors as rock type, depth of holes required, working space...
Calendar: A 1984 Calendar Illustrating National Historic Civil Engineering Landmarks
Featured landmarks are: John A. Riebkubg Bridge (KY & OH); A Hydraulic Powered Inclined Plane of the Morris Canal; Buffalo Bill Dam (WY); The Philadelphia Municipal Water Supple...
Calendar: A Calendar Illustrating Bridges, Aqueducts and Viaducts Designated National Historic Civil Engineering Landmarks (1981)
Featured landmarks are: Eads Bridge (MO); Tunkhannock Viaduct (PA); Bridgeport Covered Bridge (CA); Bollman Truss Bridge (MD); The Mississippi River Bridge of the Great Northern Railroad...
Reaching for the Sky
Tapei 101�soon to open its doors as the world's tallest building�will resist devastating typhoons, earthquakes, and sway with an ingenious system of outrigger trusses, supercolumns,...
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...
A New Identity
By repairing and relocating steel trusses, replacing deteriorating approach spans, and replacing what, at the time of its construction, was regarded as a daring concrete truss, engineers...
Special Structures: Past, Present, and Future
Engineering, Design and Construction of Lunar Bases
How do we begin to expand our civilization to the Moon? What are the technical issues that infrastructural engineers, in particular, must address? This paper has the goal of introducing...
Wide Open
The retractable roof of the stadium being built for the Arizona Cardinals will be the first in the United States to operate on an incline, and the extraordinary trusses that support it...
Metamorphosis
Ranked as one of the 15 tallest buildings in New York, the headquarters of the Bear Stearns Companies, Inc., is a 45-story skyscraper that is 815 ft (248 m) tall. Replacing an existing...
The Inside Story
A full-scale renovation of the interior of Oklahoma City's Civic Center Music Hall required shaving much of the depth from two trusses under load conditions, installing new...
Ties to Excellence
The new Exhibition Center London (ExCeL) on the north side of the Royal Victoria Dock in London is just one of many structures altering the Docklands' landscape. The roof...
Rethinking Bangkok's Wastewater Strategy
In the past 10 years the Bangkok Metropolitan Administration has spent $1 billion developing a major wastewater collection and treatment program for the city of Bangkok. The city is presently...
Box Girder Balancing Act
On November 18, 1999, cranes lowered into place the last of 202 precast concrete segments that form the main span of the new Sagadahoc Bridge, a $46.6 million crossing that boasts the...
Above Them All
The design for what would be the next world's tallest building relies on a 1,550 ft (472 m) high concrete core that will give occupants of the top floors of the building unimpeded...
Double Domed (Available in Structural Engineering Special Issue only)
A 45,000-seat soccer stadium under construction in La Plata, Argentina, takes domed roof design to the next level. A Tenstar dome, first used in the Georgia Dome in Atlanta, consists of...
Branching Out (Available in Structural Engineering Special Issue only)
The Cologne/Bonn Airport in Germany is currently undergoing its biggest construction project to date: a $200 million, five-story addition. Close and productive collaboration between the...
Space Truss
The International Space Station will be more than 310 ft (94 m) long when it is completed sometime in the next decade. The backbone of the structure is a hexagonal truss system that will...
From Pikes Peak to Mars
A graywater (sink and shower wastewater) reuse system is now being designed to serve a visitors' center and a nearby laboratory atop Pikes Peak, Colorado. If the Pikes Peak...
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