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Articles 11071 - 11100 of 11799
Full-Text Articles in Civil and Environmental Engineering
Some Aspects Of Aerated Open-Channel Flow At Shallow Depths And Low Velocities, D. L. Fread
Some Aspects Of Aerated Open-Channel Flow At Shallow Depths And Low Velocities, D. L. Fread
Masters Theses
"This study is concerned with the effect of entrained air bubbles on the open-channel hydraulics of water flowing at low velocities. The air bubbles are introduced into the flowing water by injecting diffused compressed air along the channel bottom. The variations of the velocity profile and velocity distribution energy coefficient of aerated and nonaerated flow are discussed. Empirical equations have been determined for the air concentration and increased depth of flow or "bulking" of the aerated open-channel flow. The investigation revealed a significant increase in the Manning roughness coefficient and the related Darcy friction factor for aerated flow relative to …
A Flood Frequency Study For Small Watersheds In Missouri, Ronald Anthony Rusch
A Flood Frequency Study For Small Watersheds In Missouri, Ronald Anthony Rusch
Masters Theses
"The quantity and quality of streamflow data available on small watersheds in Missouri has improved in the last ten years. However, it will be years before there is sufficient data on both the large and small watersheds to enable investigators to conduct extensive studies in the state. This study of 70 small watersheds within the state of Missouri presents a technique to estimate the discharge from watershed of 25 square miles or less...Results from this study may be used in the design of small hydraulic structures such as culverts, bridges, and dams for small reservoirs"--Abstract, page ii.
Some Effects Of Lead-Zinc Mining Wastewater On A Stream Environment, Anthony Ralph De Alonso Handler
Some Effects Of Lead-Zinc Mining Wastewater On A Stream Environment, Anthony Ralph De Alonso Handler
Masters Theses
"The continuous discharge of lead-zinc mine and mill wastewater into some streams in southeastern Missouri may alter the ecology of those streams. A field and laboratory study was conducted to evaluate the potential pollution problem. Bee Fork Creek, the first stream in that area to receive tailings from mining operations, was selected for this study and periodically surveyed. Laboratory tests included static bioassays of lead, zinc, and copper, and the mode of action of the metals was investigated through post-mortem examination of the experimental fish. The test animals used in the bioassays were bluegill sunfish (Lepomis macrochirus, Rafinesque). The heavy …
Laboratory Measurement Of Pore Water Pressure Induced By A Model Friction Pile, Charles Alfred Miller
Laboratory Measurement Of Pore Water Pressure Induced By A Model Friction Pile, Charles Alfred Miller
Masters Theses
"This research program has been undertaken to develop a laboratory testing procedure for the measurement of pore water pressure induced by the static loading of a model friction pile. Most of the investigation involved the design, construction, and testing of equipment to be used during the tests which would produce satisfactory and reliable results. It was also desired to simulate field conditions during the tests. A series of tests were performed varying the consolidation pressure on the soil around the model pile. The effects of changing the location of the pore pressure measurements was also investigated. Results of the tests …
The Application Of Time-Lapse Photography In Work Simplification Studies Of Construction Operations, Jimmy Alan Jacobson
The Application Of Time-Lapse Photography In Work Simplification Studies Of Construction Operations, Jimmy Alan Jacobson
JTRP Technical Reports
No abstract provided.
A Study Of Different Types Of Connections To Structural-Steel Square Tubings, Chao-Sheng Chen
A Study Of Different Types Of Connections To Structural-Steel Square Tubings, Chao-Sheng Chen
Masters Theses
"Although square tubular element has long been recognized as an ideal structural member, its acceptance was limited by the lack of detailed knowledge on suitable connections related to this geometric shape. It is structurally inefficient to use a strong column poorly connected to a strong beam. So it is necessary to understand, in advance of adoption, the effect and behavior of different types of connections and to develop an efficient structural system. In this study, the ordinary column-to-beam framing with different types of connections has been investigated. The three types of connections are single-plate connection, double-angle connection, and multi-angle connection. …
Static And Dynamic Instability Analysis Of Rigid Frames With Timoshenko Members, Carlton Lee Smith
Static And Dynamic Instability Analysis Of Rigid Frames With Timoshenko Members, Carlton Lee Smith
Masters Theses
"In this thesis, a technique has been developed to determine the natural frequencies of plane rigid frames with the consideration bending, shear deformation, rotatory inertia, and internal axial forces. The internal forces are functions of the instability load of the vibrating system for which the effects of bending and shear deformation on the stability of this structure are considered. For the sake of completeness, the matrix formulations for the dynamic or stability analysis of a rigid frame are given. The stiffness matrices of these formulations are then derived. The influence of shear deformation, rotatory inertia, and internal axial force is …
A Study On Load Transfer Of Model Friction Piles, Richard Milton Franke
A Study On Load Transfer Of Model Friction Piles, Richard Milton Franke
Masters Theses
"Previous investigations concerned with disturbance of soft clay by driving displacement piles are summarized. The initiation of excess pore water pressures due to pile driving, and mechanisms of load transfer are also described, along with the applicapability of model pile testing in analysis of the various phenomena. Load tests were conducted on assorted sizes of model friction piles embedded in sedimented soil samples with consisted of a silt and clay mixture. Pilot holes of various diameters were cut in the samples. A theoretical load distribution curve was used to calculate the load transferred to the soil as a function of …
Plastic Analysis Of Beam - Columns, Ning-Cheng Tsao
Plastic Analysis Of Beam - Columns, Ning-Cheng Tsao
Masters Theses
"The results of an analytical study of the inelastic deformation of a wide-flange steel beam-column are presented. Emphasis has been placed on the influence of axial thrust on the pinned-end beam-column subjected to equal end moments with opposite direction. For this type of beam-column behavior, the relationship between the applied moment, axial load, and resultant curvature for the region in the plastic range has been studied in this investigation"--Abstract, page ii.
The Influence Of Organic Matter On Shear Strength Of A Cohesive Soil, Kamran Rezvan
The Influence Of Organic Matter On Shear Strength Of A Cohesive Soil, Kamran Rezvan
Masters Theses
"The shearing properties of an organic A̲ horizon of Bryce clay were studied and compared with the properties of the same soil treated with hydrogen peroxide. The treatment was to remove the organic matter and isolate it as a variable. Tests were performed on artificially sedimented samples of the untreated, 75 percent untreated, 50 percent untreated, 25 percent untreated, and the treated soil. The effective stress failure envelopes were found to be higher for the untreated soil than that of the treated. The elastic deformation, however, was larger for the untreated samples. The pore water pressure development due to shearing …
Sorption And Desorption Of Chlorinated Hydrocarbon Pesticides By Clay Minerals, Cheng Sun Liao
Sorption And Desorption Of Chlorinated Hydrocarbon Pesticides By Clay Minerals, Cheng Sun Liao
Masters Theses
"This thesis describes the sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals under laboratory controlled environmental systems. Particular emphasis was directed toward the investigation of the fundamental adsorption phenomena which occurred in selected pesticide-clay systems. the effects of certain environmental stresses, including pH, temperature and salt (NaCl) concentration of water, on the behavior of sorption and desorption were also studied. Pesticides selected for this study included DDT, dieldrin and heptachlor, and clay minerals employed were kaolinite, montmorillonite and illite. The adsorption rate and equilibrium were evaluated by batch techniques employing completely mixed systems while the effects of the …
Correlation Of Particulate Theory And Behavior Of Real Soils, Christopher Byron Groves
Correlation Of Particulate Theory And Behavior Of Real Soils, Christopher Byron Groves
Masters Theses
"The behavior of granular soils subjected to triaxial stresses can be explained in terms of a combination of elastic deformation and sliding friction. Three sans and a coarse silt at various initial void ratios were tested in drained triaxial compression. Cell pressures were varied between 50 and 1500 psi. Prediction techniques for simulating laboratory data was based on various packings of equal radii spheres. Equilibrium and compatibility equations were used to calculate the principal strains under certain applied stresses. The assumed arrays predicted much smaller strains than those than the soils exhibited. If these strains were subtracted from those observed, …
Selection Of Soil Strength Values For The Design Of Flexible Pavements : Technical Paper, Eldon J. Yoder
Selection Of Soil Strength Values For The Design Of Flexible Pavements : Technical Paper, Eldon J. Yoder
JTRP Technical Reports
No abstract provided.
Accident Analysis At Railroad-Highway Grade Crossings In Urban Areas: Technical Paper, William D. Berg, Joseph C. Oppenlander
Accident Analysis At Railroad-Highway Grade Crossings In Urban Areas: Technical Paper, William D. Berg, Joseph C. Oppenlander
JTRP Technical Reports
No abstract provided.
No-Passing Zones: Criteria, Legislation And Location, Valkenburg Gerald Van
No-Passing Zones: Criteria, Legislation And Location, Valkenburg Gerald Van
JTRP Technical Reports
No abstract provided.
Temperature Effects On The Compaction And Strength Behavior Of Clay, William H. Highter
Temperature Effects On The Compaction And Strength Behavior Of Clay, William H. Highter
JTRP Technical Reports
No abstract provided.
An Operational Planning Information System For Small Communities : Draft Copy, Robert J. Maxman, William Louise Grecco
An Operational Planning Information System For Small Communities : Draft Copy, Robert J. Maxman, William Louise Grecco
JTRP Technical Reports
No abstract provided.
Multispectral Data Interpretation For Engineering Soils Mapping : Technical Paper, Marc Giles Tanguay
Multispectral Data Interpretation For Engineering Soils Mapping : Technical Paper, Marc Giles Tanguay
JTRP Technical Reports
No abstract provided.
The Gcars System Fortran Iv Users Manual, Part 2, A. Keith Turner
The Gcars System Fortran Iv Users Manual, Part 2, A. Keith Turner
JTRP Technical Reports
No abstract provided.
Financing The Highway Needs Of Indiana, Harold L. Michael, James A. Metcalfe
Financing The Highway Needs Of Indiana, Harold L. Michael, James A. Metcalfe
JTRP Technical Reports
No abstract provided.
Flow In Aggregate-Binder Mixes, Egons Tons
Flow In Aggregate-Binder Mixes, Egons Tons
JTRP Technical Reports
No abstract provided.
Activity-Accessibility Models Of Trip Generation : Progress Report, Tamman Zaki Nakkash
Activity-Accessibility Models Of Trip Generation : Progress Report, Tamman Zaki Nakkash
JTRP Technical Reports
No abstract provided.
Major Aspects Of The Urban Transportation Planning Process : Interim-Summary Report, William Louise Grecco
Major Aspects Of The Urban Transportation Planning Process : Interim-Summary Report, William Louise Grecco
JTRP Technical Reports
No abstract provided.
Use Of Precast, Prestressed Concrete For Bridge Decks : Progress Report, James H. Ford
Use Of Precast, Prestressed Concrete For Bridge Decks : Progress Report, James H. Ford
JTRP Technical Reports
No abstract provided.
Tests Of Prestressed Concrete Beam Splices, Martin J. Gutzwiller, Robert H. Lee
Tests Of Prestressed Concrete Beam Splices, Martin J. Gutzwiller, Robert H. Lee
JTRP Technical Reports
No abstract provided.
The Gcars Ii System : Technical Paper, A. Keith Turner
The Gcars Ii System : Technical Paper, A. Keith Turner
JTRP Technical Reports
No abstract provided.
The Gcars System Fortran Iv Programmers Manual, Part A - Programs For Data Collection And Evaluation Part 3 A, A. Keith Turner
The Gcars System Fortran Iv Programmers Manual, Part A - Programs For Data Collection And Evaluation Part 3 A, A. Keith Turner
JTRP Technical Reports
No abstract provided.
The Gcars Fortran Iv Programmers Manual, Part B - Programs For Generation Of Alternatives Part 3 B, A. Keith Turner
The Gcars Fortran Iv Programmers Manual, Part B - Programs For Generation Of Alternatives Part 3 B, A. Keith Turner
JTRP Technical Reports
No abstract provided.
Evaluation Of The Performance Of Ultrasonic Equipment For Pavement Thickness Measurements, Charles F. Scholer, Raymond Doran Pavlovich
Evaluation Of The Performance Of Ultrasonic Equipment For Pavement Thickness Measurements, Charles F. Scholer, Raymond Doran Pavlovich
JTRP Technical Reports
No abstract provided.
A Study Of The Behavior Of Reinforced Concrete T-Beams Subjected To Repeated Loads, Robert S. Platoni
A Study Of The Behavior Of Reinforced Concrete T-Beams Subjected To Repeated Loads, Robert S. Platoni
JTRP Technical Reports
No abstract provided.