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A Value Engineering/Risk Analysis Approach to Operation and Maintenance of Hydraulic Structures
Value engineering is an objective, systematic method for minimizing cost of a system. Risk analysis is a method of quantifying uncertainties or probabilities of possible economic loss,...

Stable Channel Analytical Design Method
The Flood-Control Channels Research Program is being conducted at the US Army Engineer Waterways Experiment Station to develop systematic methods for design of stable channels for small...

Conceptual Evaluation of Dam Safety by Instrumentation
The criteria governing the design of dams can frequently be imprecise. One of the most practical methods of evaluating dam safety in the dam safety surveillance programs is to check the...

The Influence of Uniformity on Riprap Stability
Studies have shown that size uniformity influences the stability of riprap. The ratio of fractional sizes of the riprap mixture, D₆₀/D₁₀,...

Can Erosion Control Meet Regulatory Standards?
An erosion control design method for rainfall/surface erosion is presented that enables the designer to determine design loads and the resulting erosion control requirements. Design loads...

Coronarization of the Autonomous Water pump
The conventional hydraulic pressure multiplier has been successfully used by Belgian technician Robert Houman (1986) to provide a dependable source of water supply to the NATO-base at...

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...

Model for Nonlinear Behavior of Bolted Joints Under Bending/Tension Loading
A mathematical model to predict the load-deformation relationship of single-bolted connections in wood structures subjected to bending/tension loading is described. The model accounts...

Bond Performance of Reinforcing Bars Embedded in Fiber Reinforced Concrete and Subjected to Monotonic and Cyclic Loads
The primary variables investigated were fiber content and loading history. The reinforcing bar size was ASTM #5. Steel fibers with hooked ends were used with four fiber contents, namely;...

Maturity and Pullout for High-Strength Concrete
As with other types of concrete mixtures, construction with high-strength concrete requires assurance that sufficient levels of in-place strength are reached at specific times. An experimental...

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...

Anomalous Structural Size Effect in Cohesive Materials Like Concrete
This contribution analyses on theoretical grounds the size effect trends in special cases where - unlike most experimental situations in fracture research - the specimen is not precracked...

Selected Earthquake Engineering Papers of George W. Housner
Sponsored by the Structural Division of ASCE. This volume collects key papers on earthquake engineering by George W. Housner, who more than any other...

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...

 

 

 

 

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