The Soil-Rock Boundary: What is it and Where is it?
A major issue in many areas of Civil Engineering practice is the boundary between earth materials that are defined as soil and those that are defined as rock. Designers, contractors, and...
Problems with Rock Excavation Specification in Alberta
As a result of contract overruns and claims from classification, measurement, and payment for 'solid rock' excavation, Alberta Transportation and Utilities embarked...
Where Does Rock Begin Beneath Philadelphia?
Philadelphia provides an excellent example of the engineering problems associated with the interpretation of saprolite/weathered rock/sound rock profiles. The bedrock beneath the city...
Special Bedrock Conditions in Greater Boston
The Cambridge Argillite, a weakly metamorphosed shale, forms the major portion of the Boston Basin, a structural as well as topographic depression. In the greater Boston area, the argillite...
Where Does Rock Begin for Three Highway Projects?
'Where does rock begin?' was a question raised on three large highway projects in the western United States. The question was successfully answered by a variety...
Foundation Studies in a Fault Zone and a Steep Valley Slope
This paper presents two case histories which illustrate unique problems in defining the character of rock for support of structures. The first case study concerns a conventional building...
Soil-Rock Transition Zone: Uncertainties for Design and Construction
This paper addresses the problem of establishing definitions of the soil-rock boundary with regard to different engineering applications in the Piedmont geologic provinces. Three engineering...
Ground Stabilization in Shallow Depth Soft Ground Tunneling
A new approach was employed for ground stabilization to drive a semi-circular cross-section tunnel with overall dimensions of 24 ft (7.3m) wide, 12 ft (3.7m) high, and 164 ft (50.0m) long....
Rock in the Limestone Regions of the Southeastern United States
Problems often arise in the shaft drilling industry in the Southeast. The karst areas in this region have certain situations found in few other places. Erratic boulders and limestone pinnacles...
The U.S. Office of Surface Mining (OSM) Proposed Strength-Durability Classification System
Federal regulations for the surface mining of coal stress proper design and construction of stable waste rock disposal areas. A key to the long-term stability of these excess spoil fills...
Determination and Presentation of Subsurface Conditions for Design and Construction
A major problem in the design and construction of many engineering projects is the lack of adequate geotechnical information both for design and for determining conditions to be encountered...
Determination of Vertical Leakage for Nile Valley
The determination of vertical groundwater leakage is particularly important for irrigated agriculture where adequate drainage is required to prevent high water tables and related problems...
Conflict in Water Management of James River, ND
Delivery of water from storage in Jamestown Reservoir to 898 acres of newly developed irrigation along the lower James River by the U.S. Bureau of Reclamation during the drought of 1988...
Remediation and Mitigation Associated with Contamination of Water by Irrigation Drainage
Inorganic trace constituent or pesticide contamination problems associated with irrigation drainage from Federally constructed or managed irrigation projects have been identified in several...
Regional Water Supply Needs and Sources, Southwest Florida Water Management District
In 1990, the Southwest Florida Water Management District completed a district-wide water supply needs and sources planning analysis. The SWFWMD needs and sources analysis identifies water...
Yampa River Basin Alternatives Feasibility Study an Example of Conflict Resolution in Water Supply Development
The Yampa River, located in northwest Colorado, is a major tributary of the Green River segment of the Colorado River system. Potential water resource development in the Yampa River Basin...
Yazoo River Basin a New Direction for the Corps
The paper presents the lessons learned from the past events in the Yazoo Basin. The Yazoo Basin project is the only mechanism available that can provide the flood control that is needed...
The Carson and Truckee Rivers Lifeline in the Desert
Nevada is the most arid state in the nation with an average annual precipitation of less than 9 inches (23 cm) over the 110,500 square miles (286,200 sq km). The Truckee, Carson, and Walker...
Restructuring of Water Agencies in Salt Lake Valley, Utah
The Salt Lake Valley consists of a metropolitan area with a population of about one million. Wholesale domestic water supply is provided to this area by two main agencies, namely Salt...
Tampa Bay: A Collaborative Approach to Effective Watershed Management
Rapid urbanization in the Tampa Bay watershed continues to challenge Florida's surface water management efforts. Upgrading of all wastewater treatment facilities substantially...
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