Width Adjustment: Relative Dominance in Unstable Alluvial Streams
The mechanisms that control the relative dominance of width adjustment in unstable streams are described. Specifically, the role of the following factors affecting the fluvial environment...
Field Evaluation of the Sediment Transport Model Stream with a Bank Erosion Component
The graded sediment routing and stream bed evolution model STREAM of Borah, Alonso and Prasad was expanded earlier by incorporating a riverbank erosion component of Osman and Thorne. In...
Relation of Unit Gravel Discharge to Mean Velocity
In sand-bed streams, the unit discharge of sand varies approximately with the fifth power of the mean velocity and inversely with the median diameter of the bed sediment. Similar relations...
Bed Material and Numerical Modeling in a Gravel/Cobble Bed Stream
The characteristics of bed material in a cobble or gravel river and their use for numerical simulation of flushing flow needs are discussed. There are three types of bed material: 1) material...
Local Scour Potential for Large Bed Material with Shallow Tailwater Depth
Jet momentum acting on a bed particle and submerged jet diffusion theory were employed to derive scour prediction formulas in a plunge pool. Semi-theoretical formulas were suggested for...
Performance of Submerged Vanes for Control of Sediment in an Irrigation Canal
Removal of accumulated sediments from irrigation canals is necessary in order to maintain canal capacity. Removal of these sediments may be enhanced by directing and concentrating sediments...
Fortification of MMOC Models for Steep-Channel Flows
The Multimode Method of Characteristics(MMOC), designed to solve unsteady flows, is a new comprehensive scheme formulated by merging several individual characteristic schemes of the specified-time-interval...
Explanation Facilities for Intelligent Engineering Tutors
Intelligent Tutoring Systems (ITS) provide a method for humans to interact with a computer to learn about a particular topic. Usually, the ITS system has as part of its components a knowledge-based...
Computer Fluent Civil Engineer: What Does it Mean?
The rapidly changing arena of computer and information technology has an impact on civil engineering education, what is taught, how it is presented, type of homework, maintaining computer...
Total Quality Management for Information Technology
Recently, there has been an increased awareness in the AEC firms toward Total Quality Management (TQM). Many AEC firms and the public sector started to look seriously at TQM. The reason...
Information Technology: Panacea or Poison?
Consulting engineering is entering a period of dramatic change which will provide opportunities and threats. Pressure on fee levels and changing markets are necessitating a greater emphasis...
Application of Information Technology in Construction
Information Technology (IT) is changing the way the construction industry handles many of its tasks, but not the tasks themselves. CSSP's experience, based on industry use of the company's...
Standards for Digital Exchange of Information in the Building Industry
The computer has been used as an effective tool in civil engineering practice for over three decades. During that time numerous software vendors have developed their own proprietary formats...
Information Technology for Infrastructure Management
A database management system is component of an information system which is a component of information technology. THis paper demonstrates the enormity of information technology by introducing...
Tidally-Induced Sediment Transport on the Amazon Prodelta
A study of boundary-layer processes on the Amazon River prodelta region was conducted as part of the Amazon Shelf Sediment Study (AmasSeds). Over a 2-week period during the time of high...
Vertical Distribution of Sediment Under Waves
This paper is based on the research foundation of vertical relative distribution of sediment concentration and alluvial bed stability under waves. Amended theories of E. W. Lane and A.A....
Travel Time in Mountain Basins
An empirical relationship is developed for estimating travel time in high gradient stream channels with natural beds of large gravel, cobbles and random boulders and which are flowing...
Optimization Modeling for Sedimentation in Alluvial Rivers Considering Uncertainties
A nonlinear optimization model is formulated for determining optimal reservoir releases to minimize channel bed aggradation and degradation in downstream rivers. The model is based upon...
U.S. Geological Survey Bedload Sampling Policy
During the late 1960's, the U.S. Geological Survey's (USGS) Water Resources Division (WRD) developed the Helley-Smith bedload sampler. Since then, the USGS and the Technical Committee...
Incipient Motion in Gravel-Bed Rivers
Incipient motion processes are reviewed for bed material in gravel-bed rivers. Prediction difficulties are identified. Research results are reported for field and flume studies to investigate...
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