Case History: North Slope Alaska Hydraulic Dredging
Alaska's North Slope Borough, with the aid of dredging machinery consultant Michael Weston, and geotechnical consultant Rittenhouse-Zeman & Associates, has pioneered...

Sediment Recycling for Beach Nourishment, Sandy Hook, N.J.
Maintenance dredging of Ambrose and Sandy Hook Navigation Channels provided acceptable sand for nourishment of the critical zone at Sandy Hook, Gateway National Recreation Area, to protect...

Practicality of Advance Maintenance: Savannah Harbor
Advance maintenance of navigation channels can involve deepening, widening, side slope dredging, or a combination of these. Because advance maintenance in Savannah Harbor has only involved...

Numerical Simulation of the Bed Armoring Process
The stability of a river channel depends to a great extent on sediment characteristics. If the amount of sediment coming into a given reach for some reason becomes less than the river's...

Flow and Scour Patterns around Gabion Structures
There is a need for simple, inexpensive and effective means for streambank protection and fish habitat enhancement. Initial results are presented of laboratory research on the performance...

Modeling Multiple Spur Schemes to Control Bank Erosion
A natural consequence of the meandering tendencies characteristic of all streams, is streambank erosion. The problem has taken on particular interest recently, focusing on erosion problems...

Willamette River Adjustments to New Spur Dikes
Severe bank erosion has caused recent local losses of up to 30 ft (9 m) per year of prime agricultural land along a half-mile (800 m) reach of the Willamette River, Oregon. The U. S. Army...

Passive-Intake System for a Shallow Sand-Bed River
The Jeffrey Energy Center draws its cooling water make-up from the Kansas River near Belvue, Kansas. At this site, the Kansas River is a shallow sand-bed river of constantly changing bottom...

Applications of Point-Slope Reservoir Routing
The point-slope method of routing flood flow through a reservoir uses point functions rather than the time incremental functions of conventional methods. It can be used to give an accurate...

Riprap Sizing-Four Methods
A comparison summary is provided for sizing of riprap by four methods: Isbash, Froude, Tractive Force - Logarithmic Velocity Profile (TFL), and Tractive Force - Power Velocity Profile...

The Importance of Nonlinear Wave Interactions Under Ice
Waves under ice interact at the second order in wave slope. Because of this, a monochromatic wave train impinging on an ice sheet can transfer a significant amount of energy to its own...

Modifications of Dams for Recreational Boating
Many existing dams and river structures require modification, and new structures may need to include designs to allow safe white water activities. The basic problem is safety, with a long...

Pipeline Materials and Design
The proper use of pipeline materials and design is obviously paramount in the private and public works sectors. The introduction and proper use of new piping materials and design procedures...

Ditch Flow Program
Seventeenth in the CE Computing BASICS series, the program in this article is for simplifying drainage calculations. The program will provide critical and normal velocities, depths and...

Seismic Design of Embankments and Caverns
The papers included in this publication were presented at three symposia on seismicity and seismic design for embankment dams and underground openings. Primary topics for discussion include:...

Artificial Islands
Artificial islands constructed from gravel fill have become a preferred approach to drilling for oil in hostile Arctic environments. These man-made islands are being built to serve as...

Are U.S. Firms Handicapped in Winning Foreign Jobs?
U.S. engineers and construction officials complain that inadequate U.S. government spending for feasibility studies viz-a-viz the Europeans and Asians, noncompetitive financing, and an...

Frost Inducing Slides on Membrane-Lined Canal Slopes
Freezing beneath a polyvinyl chloride membrane lining caused water in the subgrade soil voids to migrate upward and to form thin ice lenses under the lining. During a spell of warm weather,...

Geological Environmental and Soil Properties
Proceedings of the Geological Environment and Soil Properties Convention held in Houston, Texas, October 17-21, 1983. Sponsored by the ASCE Geotechnical Engineering Division. Geological...

Journal of Engineering Mechanics
The Journal of Engineering Mechanics covers activity and development in the field of applied mechanics as it relates to civil engineering. Research on bioengineering, computational mechanics, computer-aided...

 

 

 

 

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