Columbia River Treaty: Environmental Impact
Several major environmental impacts results from implementation of the Columbia River Treaty. The first one stems from the conservation of hydroelectric resources through coordinated planning...

Asymmetric Flow in Symmetric Expansions
Asymmetric flow patterns may occur in perfectly symmetric abrupt expansions, in which the main flow deflects and attaches arbitrarily to one wall of the expansion. With the notable exception...

Guidelines for Producing Better Specifications
Careful preparation, procedures, and methods to produce better specifications will minimize errors and reduce costs of delays and claims for extras. Specifications should be reviewed at...

Application of Modulus Degradation Model of Clays
A degradation model is applied in conjunction with different soil models and stress-strain relations to site response analyses during earthquakes. To evaluate the effects of degradation,...

Initiating and Maintaining Client Relationships
This paper describes the developments in our economy in the mid 70's that have forced many businesses to change their views regarding the marketing of professional services....

Economic Analysis of Rehabilitation of Water Mains
Cleaning and relining of water transmission lines is economical if the costs are less than the savings in energy and pumping capacity which occur because of the increased carrying capacity...

Tabular Representation of Cross-Sectional Elements
A convenient and consistent method for representing the top width, area, first moment of area, and second moment of area for an irregular stream cross section is presented. The variation...

Envelope Curves for Extreme Flood Events
Maximum flood experience in a region can be depicted by a graph on which maximum known floods are plotted against drainage area. A smooth curve enveloping the plotted points provides the...

Creep of Concrete in Variable Environments
Creep and shrinkage measurements are reported on three steam-cured and one moist-cured control concrete. Half the specimens were stored in a constant environment of 70° F and 50% RH, and...

Involvement of Engineers in Public Affairs
A discussion of the opportunities available to engineers in public affairs is presented. Specific suggestions are included for engineers interested in providing volunteer service in their...

Intra-CBD Secondary Travel Patterns of Downtown Workers
Previous Downtown People Mover (DPM) feasibility studies have shown that the majority of the average daily DPM trips will be made by downtown workers during their travel to and from the...

Equivalent Hydraulic Pipe for Parallel Pipes
Methods are defined for reducing two or more parallel pipes to a single hydraulically equivalent pipe for analysis using the Darcy-Weisbach equation that allows the friction factor to...

Trends in Engineer Registration, Sunset Review: How to survive?
Thirty-one states have legislated periodic review of licensing and regulatory functions, including professional registration or licensure of engineers, land surveyors, and related professionals,...

Stormwater Pollution Control: Structural Measures
Combinations of storage and wet-weather treatment, integrated with dry-weather treatment facilities and nonstructural control measures on an area-wide basis, are found to provide the greatest...

Lawsuits Arising Out of Reconstruction
Liability judgements resulting out of negligence in the performance of highway design, construction or maintenance activities have continued to increase in the past decade, notwithstanding...

Cost-Effective Pretreatment Programs
A method is developed for planning cost-effective control programs for toxic pollutants in municipal treatment systems. It chooses the levels of industrial pretreatment and type of municipal...

Dade County Rapid Transit: Management Scheduling Techniques
In order to reduce the size and maintenance problems of CPM schedules for large public works programs, a system of summarization networking was developed and utilized on the Dade County,...

Design Life Simulation of a PCRV
A nonlinear three-dimensional finite element program was used to analyze the prestressed concrete reactor vessel (PCRV) of a high-temperature gas-cooled reactor. The various loading conditions...

Hysteresis Models for Reinforced Concrete
Nonlinear dynamic response of a simple reinforced concrete specimen is studied using five different hysteresis models: the Takeda, elasto-plastic, bilinear, Clough, and the Q-hyst model....

Stormwater-Combined Sewage Pollution Abatement
The mission of the USEPA's Storm and Combined Sewer Pollution Control Research and Development Program is to quantify the urban storm and combined sewer overflow pollution...

 

 

 

 

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