Dynamic Consolidation - Dramatic Way to Strengthen Soil
The dynamic consolidation technique consists basically of dropping a heavy pounder of up to 4 x 104 kg from a height varying between 50 to 148 ft....
Dike Safety Upgraded with Millions of Square Feet of Fabric
Nonwoven fabrics of two different weights were used in an $80 million dike reconstruction project in southern Florida. Florida Power & Light Company rebuilt the embankment to a...
Jersey Drought Hastens Water Supply Project
As 1980 ended, water supply reservoirs in northern New Jersey were perilously low, causing the governor to declare a water emergency and insist on water rationing. Although the Round Valley...
Japanese Tunnel Design: Lessons for the U.S.
The Japanese construction industry has a great deal to offer regarding designs, methods, and procedures that can efficiently overcome the tough physical and environmental constraints encountered...
Groundwater Contamination by Chlorinated Hydrocarbons: Causes and Prevention
Groundwater contamination by chlorinated hydrocarbons is becoming a major problem to public water suppliers and private homeowners who have their own wells. The chemical background, composition...
U.N. Launches International Water Decade; U.S. Role Uncertain
Over 13 million children die in developing countries annually, and a key factor in many of these deaths is the lack of both drinking water and safe human-excreta disposal. Two-thirds of...
GAO Finds Massive Failure of Wastewater Treatment Plants
A year-long study by the General Accounting Office of 242 wastewater treatment plants in 10 states concluded that discharge permit violations are the norm, not the exception. The failures,...
Barrier Islands: Should Engineers Interfere with Nature�
The pros and cons of barrier island development and protection are explored. Most coastal professionals think that pristine barrier islands probably ought not to be developed except under...
The Deep-Shaft Process: Bright Future for Treating High-Strength Wastewaters
A Deep-Shaft wastewater treatment process may reduce by 10 to 30 percent the power requirements and land area needed for a plant. The technique is most attractive for treating high-BOD...
Ugly Dump Site Transformed into Recreation Mega-Facility
The civil engineering project selected as the Outstanding Civil Engineering Achievement of 1981 is described. While other communities bemoan the use and loss of land to refuse disposal,...
Rehab or Replace? Foundation Testing Provides the Answer
A $15 million, multidisciplinary testing program was undertaken to determine the least expensive methods of rehabilitating Locks and Dam No. 26 on the Mississippi River. The Problems were...
Flood Routing Program
This is the fourth article in Civil Engineering�ASCE's computer series. A BASIC language program is presented for routing floods through storage reservoirs or detention basins...
Wicks, Fabrics and Sawdust Overcome Thick Mud
A new Dumbarton bridge is replacing the original which was built in 1927 to cross San Francisco Bay at its southern end. The bridge approaches are constructed on top of salt ponds, with...
Can Clay Liners Prevent Migration of Toxic Leachate
According to recent research, low permeability clay barriers, used by landfill operators to contain hazardous wastes, can be rendered highly permeable by certain aggressive chemicals including...
Engineers Assess Aquaculture Systems for Wastewater Treatment
The status of aquaculture technologies for wastewater treatment are explored, and an engineering assessment is made of the feasibility for their routine use in municipal wastewater treatment....
Geotechnical Research Needs
A National Science Foundation-ASCE workshop on research needs looked at, among other subfields, geotechnical engineering. The study identified a number of research needs�based on society's...
If Your City's Well Water Has Chemical Pollutants, Then What�
Synthetic organic chemicals, especially certain solvents, are showing up in groundwater all over the U.S. and in many other industrial countries as well. These substances, some of which...
Rocky Mountain Arsenal: Landmark Case of Groundwater Polluted by Chemicals
For more than 20 years, the Army's Rocky Mountain Arsenal near Denver has been dealing with groundwater pollution caused by chemical warfare agents and pesticides. The arsenal...
EPA Moving to control Industrial Toxic Pollutants with New NPDES Permits
To date, the main thrust of the nation's water pollution control program has been to abate traditional pollutants (biochemical oxygen demand, total suspended solids, and heavy...
Will EPA'S Nationwide Urban Runoff Study Achieve Useful Results�
Approximately 30 studies are now underway across the United States as part of the Nationwide Urban Runoff program (NURP) to evaluate the water quality significance of stormwater drainage...
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