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Engineering Education for Appropriate Technology
Few appropriate technology programs offer an engineering-based curriculum. The Drexel University program is rare in that it combines a solid engineering degree with a broad-based supplement...

Education and Research Needs for Appropriate Technology
Appropriate technology and sustainable development are inextricably interrelated and the engineering profession is increasingly realizing that greater care must be given to taking these...

Stormwater Management for San Joaquin Hills Transportation Corridor, Orange County, California
San Joaquin Hifis Transportation Corridor (SJHTC or Corridor) is one of the largest design-build toll roads in U.S.A. To meet stringent environmental mitigation requirements, to ensure...

Selection of Sediment Transport Relations: Part I, Review of Sediment Transport Comparisons
There are a great number of sediment transport relations in existence in the world today. The engineer is often faced with the problem of choosing the most appropriate relation for the...

Selection of Sediment Transport Relations: Part II, Ranges of Dimensionless Numbers
With a large number of sediment transport equations claiming to be applicable within various ranges of hydraulic and sediment parameters, engineers are often faced with the dilemma of...

Selection of Sediment Transport Relations Part III: Numerical Ranking of Sediment Transport Relations
The emphasis of this paper is the methodology for the selection of sediment transport relations and is applicable for analysis of any sediment transport relation. However, to illustrate...

The Analysis of the Failure of the Minte Stream Culvert
A persistent and continuous rainfall that lasted for more than 30 hours on May 6?7, 1995, caused the sudden failure of an embank ment on the main road between Puerto Varas and Ensenada,...

Measurements of Bridge-Scour Depths in Mississippi
This paper briefly summarizes 190 measured pier-scour depths collected dur ing 1942?94 at 22 selected bridges in Mississippi and presents an envelope-curve equation for the data. The envelope-curve...

Scour-Hole Dimensions at Selected Bridge Piers in New York
Knowledge of scour-hole dimensions can be used by bridge engineers to deter mine the extent of countermeasures needed to prevent scour at bridge piers. Scour-hole widths at 128 piers,...

Water Quality Mitigation for the San Joaquin Hills Transportation Corridor
The San Joaquin Hills Transportation Corridor (SJHTC) is a 24 km Design/Build tollway which has been financed with bonds to be paid back with toll revenue. The Environmental Impact Statement...

Navigation Lock Improvements
All commercial barge traffic on the Upper Mississippi River and Illinois Waterway must pass through a system of locks designed and built in the 1930s and 40s. Many of the locks on these...

Appropriate Technology for Sustainable Development
The inventiveness of the 20th century is forcing engineers (and others) to look at the multitude of technology options available, to develop criteria and methods for evaluating each option?and...

How to Manage Floodwaves in the Dutch Meuse: Future Measures to Reduce the Inconvenience of Inundations
This study showed that in the Gravelmeuse the combination of nature development and reducing of inundation inconvenience is possible. In the framework of the obliged supply of a fixed...

Influence of Flooding Events on Suspended Matter Quality of the Meuse River (The Netherlands)
Flooding events of the Rhine and Meuse Rivers have struck The Netherlands in 1993 and 1995. In the Meuse River basin, the river forelands have been widely used for housing and agro-industrial...

Environmental Restoration Measures on the Tennessee-Tombigbee Waterway (TENN-TOM)
The Tenn-Tom, opened to navigation traffic in 1985, was designed and constructed to promote environmentally sustainable development. During the past ten years, the original measures have...

Professional Associations Offer Design Resources for Civil Engineers
A civil engineer is trained academically and professionally to meet the challenges and solve the problems of ever expanding world populations. With an increased demand for civil engineers...

Marine Engines Emissions for Vessels of the United States Coast Guard
A source testing project was conducted for a select class of ships of the United States Coast Guard (USCG). Pollutants quantified included nitrogen oxides (NOX), sulfur dioxide (S02),...

Suspended-Solids Flux at a Shallow-Water Site in South San Francisco Bay, California
Time series measurements of current velocity and suspended solids-concentration (SSC) made during December 1993 and March 1994 at a shallow-water site in South San Francisco Bay were used...

Tributary No. 9 Restoration, Maryland State Highway Administration
The Maryland State Highway Administration agreed to accomplish restoration of 1,100 feet of stream channel as part of a mitigation agreement with the U.S. Army Corps of Engineers, Baltimore...

Simulation of Dissolved Oxygen in Sacramento-San Joaquin Delta
A one-dimensional model has been developed to simulate water quality in a complex multi-channel estuarine system. The model utilizes a Lagrangian reference frame for transport computations....

 

 

 

 

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