Structural Materials
This volume of Structural Materials contains papers from 12 sessions of the 7th Structures Congress held in San Francisco on May 1-5, 1989. The sessions cover a very broad range of topics...
Design of Plastic Piece Parts
This paper describes a computer assisted design process originally developed at the University of Wyoming and now implemented in commercial software. In order to address the need for broadly...
Stereolithography
Stereolithography is a three-dimensional printing process which produces accurate copies of CAD solid or surface models directly from CAD data. The process uses a moving laser beam, directed...
Gamma Exposure from Rn Progeny in GAC Units
An investigation into the gamma exposure rate generated by granular activated carbon (GAC) water treatment units focused on ten sites that covered a range of source radon (Rn) in water...
Using Borosilicate Glass as a HLW Storage Medium
There is growing concern over the quality of present high level waste management techniques. Instances of nuclear accidents and contamination at nuclear waste sites in the United States...
Conducting a Waterline Corrosion Evaluation
A study has been conducted to determine the level of corrosion activity occuring on the U.S. Navy's potable waterlines on Guam. The study evaluated soil parameters including...
Indoor Radon: Site Evaluation
The soil parameters most important in evaluating the indoor radon potential of a building site are the soil radium concentration, the soil-gas radon concentration and the permeability...
Fate and Transport of an Acid Waste in Soil and Groundwater
A fate and transport study at a closed acid waste pond located on the shore of San Francisco Bay indicated the potential of native soil and groundwater for retarding the movement of contaminants...
Low-Level Waste Disposal Design: An Overview
Low-Level radioactive waste disposal is regulated by several agencies. Mixed waste, which is both radioactive and chemically hazardous is regulated by two agencies with potentially different...
The Utilization of a Deflocculant to Decrease the Permeability of a Clay Liner
A hazardous waste landfill was completed in Oklahoma during 1988. The clay liner was constructed to fulfill the RCRA requirements for permeability of equal to or less than 1E-07 centimeters...
Drainage of Landfill Covers and Bottom Liners
This paper presents two new tools for preliminary evaluation of drainage-system designs. The first is a set of equations that define the saturated-depth profile for steady drainage over...
Instability of Bed-Surface Composition Due to Sorting Process in a Stream Composed of Sand and Gravel
Wavy patterns of sorting are often observed in a stream composed of sand and gravel, and they are regarded as instability of bed-surface composition due to selective bed-load transport...
Sediment Transport Modelling from Grain Size Data
Grain-size analysis can be useful in determining some of the hydrodynamic aspects of the evolution of a natural sand body. The suite statistics approach minimizes single-sample anomalies...
Sediment Transport in Hyperconcentrated Flows in Sand-Bed Streams
This study advances the understanding of sediment transport of bed material discharge in sand bed streams through application of recently developed theoretical concepts related to the...
The Area of Scour Hole Around Bridge Piers
The study is focused on what parameters determine the area of scour hole around bridge piers. An analytical study based on momentum principle has been used to reveal the variables involved...
Hyperconcentrations, Mud and Debris Flows?A Summary
Brief descriptions of the properties of mud and debris flow and hyperconcentrated stream flow materials and their importance to the descriptions and modeling of these flows are presented....
Selective Erosion: A Key Problem in Numerical Modelling of River-bed Changes
In capacity-controlled sediment transport of alluvial rivers the so-called 'hiding factor' determines the stability of the various grain-size fractions. The paper...
Relationship Between Channel Migration and Radius of Curvature on the Red River
The system behavior of meanders was investigated on the Red River between Shreveport, LA, and Index, AR. The effects of plan form geometry (r/w) and erodibility of bank material on the...
On the Coexistence of Bedload and Suspended Transport for a Uniform Grainsize Material
A sensitivity analysis and an experimental verification have been made to assess the validity of the equations that describe the sediment transport in non-equilibrium conditions, when...
Sediment Transport Rate for Non-uniform Sand
Based on the equations of bedload transport by authors, the functional relation of total sediment transport capacity of flow has been found. The modifying coefficient due to non-uniformity...
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