Availability of Portland Cement
A general description of economic, technical, and environmental factors that affect the types of portland cement available is presented. Economic factors have had a major effect on balance...
Effect of Fly Ash on the Microstructure and Durability of Concrete
The influence of fly ash on the microstructure and durability of concrete was investigated. It was found that the use of 50% fly ash in concrete reduced greatly its resistance to freezing-and-thawing...
Permeability Effects on the Sulfate Resistance of Concrete
A laboratory study was conducted to determine the effect of permeability on the sulfate resistance of concrete containing fly ash. Concrete specimens were moist cured for 7 and 100 days...
Time-Dependent Behavior of FRP Lintels
This paper describes an experimental investigation into the short-term and long-term behaviors of two types of T-shaped lintels made of fiber-glass reinforced plastic with polyester or...
Laboratory Fatigue Investigation of a GRP Bridge
A fatigue study of a 4.9 m glass-reinforced plastic bridge indicated a resistance to 1.6 million cycles of load without extensive damage to joints or elements. Viscoelastic creep occurred...
Cleaning Up Coal
Coal, which fueled the industrial revolution in the 19th century and two wars in the 20th, should continue to be a major power source well into the 21st century. Its abundance keeps the...
Social Components of Community Water Supply and Sanitation
The successful implementation of water supply and sanitation programs in developing countries depends not only on the provision of adequate funding and the selection of appropriate technologies...
Water Resources Development vs. Concern for Environmental Protection: Political and Judicial Responses to a Head-On Collision
There are numerous 'environmental laws' that water developers must comply with. These laws can and must be complied with. One response to such laws is to work...
The Invisible Engineer
For all their contributions to society, engineers have worked largely behind the scenes, seldom remembered in the dedication ceremonies of bridges and tunnels and skyscrapers. Several...
Risk-Based Decision Making in Water Resources
This proceedings represents an edited selection of papers presented at the Engineering Foundation Conference on Risk-Based Decision Making in Water Resources, held in Santa Barbara, California...
New Piers for an Old Bridge
Placing new piers under an old superstructure has saved the architecture of the historic Ashley River Bridge in Charleston, S.C. In July 1987, an inspection indicated deterioration and...
Avoiding Transportation Future Shock
Seattle, Washington's regional government planning group, called METRO, has undertaken a future scenarios approach to transportation planning. Working with an outside panel...
Assessing the Role of Regulation in Urban Goods Movement
While economic regulation per se is becoming virtually non-existant, other forms of regulations which result in finite and measurable economic impacts continue on -- and indeed are proliferating....
Dallas Urban Goods Movement Changes-The Decade After
In the 1970's, the City of Dallas undertook an urban goods movement (UGM) planning project that resulted by the end of the decade in far reaching changes in the process, particularly...
Economic Impact of Alternative Downtown UGM Strategies
In downtown Dallas, four strategies have been tested: consolidated public truck terminals; provision of off-street loading space in individual buildings, under ordinance; curb space management...
Load-Permit Truck Operations in New York State
This paper presents the results of a survey of indivisible-load permit vehicle operations in New York State. The survey was conducted in the context of an investigation into the impacts...
Superskycraper
The design for a hypothetical 142-story building advances te real-world challenge for taller and taller superskyscrapers. To be located on the riverbank in Chicago, it is 1,745 ft tall...
Analyzing in 3D
Suggestions for modeling and evaluating three-dimensional (3D) structures are presented. These suggestions are based on the authors' sixteen years of day to day involvement...
An Overview of Structural Reliability Methods
Recent developments in structural reliability theory and better availability of load and strength data suggest that reliability-based design (RBD) methods should be considered as a practical...
Cambering of Steel Beams
Cold cambering with force in the fabrication shop is an effective and economical method of compensating for deflections of composite beams. Typical beams should be cambered for dead load...
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