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...

Members Subjected to Torsion Combined with Other Actions
The combination of torsion with bending and shear (T-M-V) in members with both transverse and longitudinal reinforcement is the most commonly encountered combination in practical cases....

Detailing and Design Examples for Torsional Members
The nature of the internal force flow in a concrete member subject to torsion brings about both longitudinal and transverse force components. The resulting tension brought about by the...

Evaluation of the CON-ARCH reinforced Concrete Buried Arch System
Final Report
This report summarizes the evaluation of the Con-Arch culvert system marketed by Hunter Contracting, Co. of Tucson, Arizona. The evaluation consisted of computer analysis and field testing of two Con-Arch...

Clogging of Animal Waste: An Overview
This chapter examines research addressing the mechanisms that play a role in the clogging of lagoon liners by animal waste....

The Case for Cleaning
When sanitary sewer systems overflow during heavy rainstorms, the crisis is often attributed to the sheer volume of water inundating the system. In many cases, however, the lines would...

Wetlands at Work
As urbanization spread to the southern portion of Staten Island—the home of New York City's last large stand of freshwater wetlands—the New York City Department of Environmental...

San Diego Delivers
To maintain its ability to provide water to some of its rapidly growing regions, the city of San Diego is simultaneously laying two large diameter pipelines, one carrying potable water...

Pressure Relief
When the two basins making up a 90 acre reservoir in New York needed to be emptied and cleaned, engineers decided to use the 2,750 ft (840 m) long concrete wall dividing them as a dam....

Thinking Deep
An underwater pipeline that has set records for its 55 in. (1,397 mm) diameter and 3,000 ft (914 m) depth stretches nearly 2 mi (3 km) from the shore of Hawaii to bring cold seawater to...

Building the Olivenhain
Engineers in California were hired to create a reservoir capable of providing the San Diego region with 24,000 acre-feet of water during an emergency shortage. The result is the Olivenhain...

Shell of Steel
To create a saddle-shaped bandstand in a newly developed park in St. Paul, Minnesota, engineers designed a glass-covered, stainless steel lattice grid that makes use of a unique system...

CMOM in Fairfax County, Virginia

Use of Fiber Reinforced Polymer Composites as Reinforcing Material for Concrete
Although the potential of continuous fiber reinforced polymers (FRPs) was recognized more than 50 years ago, bottlenecks such as vulnerability to static fatigue, ultraviolet radiation,...

History of Hot Mix Asphalt Mixture Design in the United States
Asphalt has been used as a construction material from the earliest days of civilization, but though it has long been used as a waterproofing material in shipbuilding and hydraulics, its...

Work of Art
Cincinnati's new art center is being lauded for its structural animation and innovative use of form. Rendering this sculptural edifice in concrete and steel within a limited...

Leakage Control—Finding a New Resource from the Existing One
It is estimated that by the year 2005, one person in two will have an insufficient supply of one of the world's most precious elements: water. Worse still, it is predicted that this shortage...

Replacing a Dying Water Infrastructure
The water infrastructure in the United States will soon need massive repairs. Pipes are leaking, and most pipes are near the end of their life cycles. Tens of thousands of sewer overflows...

Grand Finale
For 87 years Oklahoma's state capitol remained unfinished, the majestic cast-in-place concrete dome its designers envisioned never built. But as Oklahoma approached its centennial—to...

Advancing Under London
Bored tunnels account for more than 20 percent of the Channel Tunnel Rail Link, the high-speed rail line that will connect the Channel Tunnel with London upon its completion in 2007. In...

 

 

 

 

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