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Articles 8911 - 8940 of 10546
Full-Text Articles in Entire DC Network
Similitude Analysis Of Model Experiments Of Piles Driven To Rock, George Nicou Georghoudes
Similitude Analysis Of Model Experiments Of Piles Driven To Rock, George Nicou Georghoudes
Theses
This thesis investigates the similitude requirements for the Dynamic Pile Driving Apparatus in the New Jersey Institute of Technology Laboratory. The apparatus is being used to perform model tests to study bearing stratum fracturing caused by driving pile groups to weak rock.
Two approaches were used to establish similitude between the model and actual field conditions. The first approach utilizes dimensional analysis to develop a relationship between the energy delivered to the rock mass by the pile and the unit length. The second approach proposes a procedure to establish an empirical relationship between the threshold energy to fracture the rock …
Tradition, Innovation And Conflict: Perspectives On Colorado Water Law, Lawrence J. Macdonnell
Tradition, Innovation And Conflict: Perspectives On Colorado Water Law, Lawrence J. Macdonnell
Books, Reports, and Studies
This digital resource contains only an abstract, cover image and table of contents information from the published book.
Print copy of book is available in the University of Colorado’s Wise Law Library: http://128.138.161.92/record=b129217
Contents: Introduction / Lawrence J. MacDonnell -- PART ONE : THE BACKGROUND: Meeting Colorado's water requirements : an overview of the issues / David H. Getches -- The historical development of Colorado water law / Raphael J. Moses -- PART TWO : WATER RIGHTS ADJUDICATION AND ADMINISTRATION: Administering Colorado's water : a critique of the present approach / Clyde O. Martz, Bennett W. Raley -- Water administration …
The Hydrology And Solids Removal Efficiency Of A Detention Pond With Groundwater Inflow, Cameron A. Boss
The Hydrology And Solids Removal Efficiency Of A Detention Pond With Groundwater Inflow, Cameron A. Boss
Retrospective Theses and Dissertations
Most recently, research on stormwater detention ponds has focused on designs and operations that will improve the water quality of the discharge. Historically stormwater detention ponds were used to reduce the rate of runoff from the watershed area of using temporary storage to attenuate flow rates.
The study site was located near Orlando, Florida, and consisted of a detention pond, namely Lake Angel, which received stormwater runoff from a 131-acre area. Hydrologic data such as precipitation, runoff, and pond outflow were measured at the site. Total and suspended solids data for the pond outflow and stormwater runoff also were collected …
Catastrophic Damage From Dam Break Floods, L. Douglas Jemes, Al-Hassan Sumani, Melanie L. Bengston
Catastrophic Damage From Dam Break Floods, L. Douglas Jemes, Al-Hassan Sumani, Melanie L. Bengston
Reports
No abstract provided.
The Use Of Fuzzy Sets Mathematics To Assist Pavement Evaluation And Management: Executive Summary, Manol Andonyadis, A. G. Altschaeffl, Jean-Lou Chameau
The Use Of Fuzzy Sets Mathematics To Assist Pavement Evaluation And Management: Executive Summary, Manol Andonyadis, A. G. Altschaeffl, Jean-Lou Chameau
JTRP Technical Reports
No abstract provided.
Traffic Volume Forecasting Methods For Rural State Highways, Jon D. Fricker, Sunil K. Saha
Traffic Volume Forecasting Methods For Rural State Highways, Jon D. Fricker, Sunil K. Saha
JTRP Technical Reports
No abstract provided.
An Investigation Of Signs For Median Crossovers, Gillian M. Worsey
An Investigation Of Signs For Median Crossovers, Gillian M. Worsey
Doctoral Dissertations
“This paper describes a study of advance warning signs for median crossovers on divided highways. Candidate crossover signs were identified from a literature review, survey of current State practices and discussions with FHWA personnel. Seven of these signs were selected for further testing in a laboratory study for legibility, understanding and driver preference. Sixty subjects representing a cross-section of drivers took part in the study, thirty at the Turner-Fairbanks Highway Research Center in McLean, Virginia and thirty at the University of Missouri--Rolla in Rolla, Missouri.
Two of the seven signs were word messages and five were symbolic signs. The results …
Water Quality Management Studies For Water Resources Development In The Bear River Basin, Darwin L. Sorensen, Craig Caupp, William J. Grenney, Steve Eberl, Jay J. Messer, Phillip Ludvigsen, Charles W. Ariss
Water Quality Management Studies For Water Resources Development In The Bear River Basin, Darwin L. Sorensen, Craig Caupp, William J. Grenney, Steve Eberl, Jay J. Messer, Phillip Ludvigsen, Charles W. Ariss
Reports
Summary: The quality of water that develops in the proposed reservoirs of the Upper Bear River Storage Project will determine the possible uses of the water. Previous studies of water quality in the Bear River and its tributaries have reported water quality problems relating to nitrate ion, sanitary indicator bacteria, suspended solids, and phosphorus concentrations. Most point sources of water pollution inthe basin have been eliminated or improved in quality, but nonpoint sources of pollution continue to degrade the quality of the Bear River. Concentrations of phosphours have been sufficiently high to encourage dense algal growth and create eutrophic conditions …
Utah Water Research Laboratory, Utah Center For Water Resources Research, A Program Overview, L. Douglas James, Donna H. Falkenborg
Utah Water Research Laboratory, Utah Center For Water Resources Research, A Program Overview, L. Douglas James, Donna H. Falkenborg
Reports
Organization of Prepared Material: This overview presents the water resources research program administered through the Utah Water Research Laboratory and the Utah Center for Water Resources Reserach. The document is prepared for an internal review by a faculty team organized by the Administration of Utah State university and an external review by a team organized by the U.S. Geological Survey as part of a national effort to evaluate the water research centers in every state over a 2-year period. These materials are prepared to stimulate discussion and spark innocative ideas for building an even stronger program. The UWRL/UCWRR administration sees …
Economic Evaluation Of Conservation Concepts For Municipal Water Systems, Trevor C. Hughes, Rangesan Narayanan, Mac Mckee, A. Bruce Bishop, Robert Leconte, Sumani Al-Hassan
Economic Evaluation Of Conservation Concepts For Municipal Water Systems, Trevor C. Hughes, Rangesan Narayanan, Mac Mckee, A. Bruce Bishop, Robert Leconte, Sumani Al-Hassan
Reports
Five concepts for conservation of municipal water supply are analyzed from an economic efficiency perspectice. They include: 1) seasonal pricing (for reduction of peak period water use), 2) dual water systems (separate high quality drinking water and untreated outdoor irrigation systems), 3) imported water transmission facility capacity optimization, 4) flow restricting devices, and 5) short-term rationing concepts. Optimization models, including generalized model generators, were developed for analysis of the first three concepts and demonstrated by applications to cities in Utah. The flow restricting device and short-term rationsing concept analyses applied approaches taken from the literature to example sites in Utah. …
Feasibility Of Incorporating Aquaculture, Solar Pond Energy, And Mineral Extraction Technologies To Control Localized Sources Of Salinity In River Systems, J. Paul Riley
Reports
Salinity poses a serious and continuing problem to the full utilization of water resources in many river basins of western U.S. A variety of management measures have been employed to mitigate the damaging effects of salinity on agricultural crops as well as on municipal and industrial uses of water. The Colorado River Basin Salinity Control Act illustrates the logic of addressing the problem on a basin wide basis under a strategy that give priority to those localized sources of salinity that contribute disproportionately large amounts of salt to the system. It remains then to devise control measures specific to each …
National Surface Water Survey: National Stream Survey Phase I--Pilot Survey, J. J. Messer, C. W. Ariss, R. Baker, S. K. Drouse, K. N. Eshleman, P. R. Kaufmann, R. A. Linthurst, J. M. Omernik, W. S. Overton, M. J. Sale, R. D. Schonbrod, S. M. Stambaugh, J. R. Tuschall Jr.
National Surface Water Survey: National Stream Survey Phase I--Pilot Survey, J. J. Messer, C. W. Ariss, R. Baker, S. K. Drouse, K. N. Eshleman, P. R. Kaufmann, R. A. Linthurst, J. M. Omernik, W. S. Overton, M. J. Sale, R. D. Schonbrod, S. M. Stambaugh, J. R. Tuschall Jr.
Reports
No abstract provided.
Appendices: Water Quality Management In Utah Mountain Watersheds, Keith R. Kimball, E. Joe Middlebrooks
Appendices: Water Quality Management In Utah Mountain Watersheds, Keith R. Kimball, E. Joe Middlebrooks
Reports
No abstract provided.
Water Quality Management In Utah Mountain Watersheds, Keith R. Kimball, E. Joe Middlebrooks
Water Quality Management In Utah Mountain Watersheds, Keith R. Kimball, E. Joe Middlebrooks
Reports
What Quality Management in Utah Mountain Streams: Several years of thorough monitoring of water quality parameters in Little Cottonwood Creek in Salt Lake County, Utah, measured the natural levels of the major water constituents, spotted significant (largely nonpoint) pollution sources, identified the pollutants deserving primary attention, and suggested the approaches to land and water management for pollution control in a mountain watershed used primarily for recreation purposes. Bacterial pollution is greater at night than during the day, on weekends than on week days, and in the summer than in the winter. Mineral content is of natural origin and largely explained …
Expected Effects Of In-Lake Dikes On Water Levels And Quality In The Farmington Bay And The East Shore Areas Of The Great Salt Lake, Utah (Executive Summary), Duane G. Chadwick, J. Paul Riley, Alberta J. Seierstad, Darwin L. Sorensen, Norman E. Stauffer
Expected Effects Of In-Lake Dikes On Water Levels And Quality In The Farmington Bay And The East Shore Areas Of The Great Salt Lake, Utah (Executive Summary), Duane G. Chadwick, J. Paul Riley, Alberta J. Seierstad, Darwin L. Sorensen, Norman E. Stauffer
Reports
Introduction: The Great Salt Lake is a terminal lake and as such is one of the major inland bodies of salt water in the world, and the largest lake of brine in the western hemisphere. Its unique features, including its mineral rich waters and interesting shores and islands, make it appealing to both industry and vacationers. Until recently, some of the great waterfowl sanctuaries in the U.S. existed along the easterly and northerly shores of the lake. However, during the past three years record breaking inflow volumes and lower than normal evaporation rates have caused an unprecidented rate of rise …
Expected Effects Of In-Lake Dikes On Water Levels And Quality In The Farmington Bay And The East Shore Areas Of The Great Salt Lake, Utah, Duane G. Chadwick, J. Paul Riley, Alberta J. Seierstad, Darwin L. Sorensen, Norman E. Stauffer
Expected Effects Of In-Lake Dikes On Water Levels And Quality In The Farmington Bay And The East Shore Areas Of The Great Salt Lake, Utah, Duane G. Chadwick, J. Paul Riley, Alberta J. Seierstad, Darwin L. Sorensen, Norman E. Stauffer
Reports
Introduction: The Great Salt Lake is a terminal lake and as such is one of the major inland bodies of salt water in the world, and the largest lake of brine in the western hemisphere. Its unique features, including its mineral rich waters and interesting shores and islands, make it appealing to both industry and vacationers. Until recently, some of the great waterfowl sanctuaries in the U.S. existed along the easterly and northerly shores of the lake. However, during the past three years record breaking inflow volumes and lower than normal evaporation rates have caused an unprecidented rate of rise …
Evaluation Of Volatilization Of Hazardous Constituents At Hazardous Waste Land Treatment Sites, R. Ryan Dupont, J. A. Reineman
Evaluation Of Volatilization Of Hazardous Constituents At Hazardous Waste Land Treatment Sites, R. Ryan Dupont, J. A. Reineman
Reports
The magnitude and extent of volatile organic emissions from hazardous waste land treatment systems were evaluated in laboratory and field studies using complex petroleum refining hazardous wastes. Laboratory experiments were conducted using two soils and a intert construction sand to investigate the emission flux rates of seven volatile constituents, i.e., benzene, toluene, ethylbenzene, p-, m-, o-xylene, and naphthalene, from API Separatory Sludge and Slop Oil Emulsion Solids wastes in column and flask laboratory units as a function of waste application rate, application method (surface versus subsurface), soil type and soil physical characteristics. Field experiemtns were conducted at an active petroleum …
Optimal Modification Of Regional Potentiometric Surface Design For Groundwater Contaminant Containment, Bithin Datta, Richard C. Peralta
Optimal Modification Of Regional Potentiometric Surface Design For Groundwater Contaminant Containment, Bithin Datta, Richard C. Peralta
Civil and Environmental Engineering Faculty Publications
A procedure for optimal modification of a regional potentiometric surface designed solely on the basis of quantitative considerations, is presented. The modification in the potentiometric surface is necessary to incorporate groundwater quality criteria in a critical subsystem of the entire region. The resulting optimal regional potentiometric surface ensures: sustained groundwater yields from the aquifer, compliance with water quality constraints at critical cells of the sub· system (which are identified by a solute transport simulation model), and the most economic conjunctive management of surface and groundwater.
A New Basin Characteristic For Use In Estimating Impervious Area And Flood Discharges In Urban Missouri Basins, Rodney E. Southard
A New Basin Characteristic For Use In Estimating Impervious Area And Flood Discharges In Urban Missouri Basins, Rodney E. Southard
Masters Theses
"A previous regression analysis of flood peaks on urban basins in St. Louis County, Missouri, indicated that the percentage of impervious area and drainage area were the only basin characteristics of statistical significance in estimating the 2-, 5-, 10-, 25-, 50-, and 100-year peak-flow discharges at ungaged urban basins. In this statewide regression analysis of urban basins, a new basin characteristic called the percentage of developed area was computed and used in a simple regression analysis. The regression analysis included percentage of developed area as the independent variable and impervious area as the dependent variable, resulting in a simplified procedure …
Web Crippling Of High Strength Cold-Formed Steel Beams, Chiravut Santaputra
Web Crippling Of High Strength Cold-Formed Steel Beams, Chiravut Santaputra
Doctoral Dissertations
"The structural behavior of high strength cold-formed steel beams subjected primarily to web crippling was investigated analytically and experimentally. In this study hat sections and I-beams, formed from five different types of high strength sheet steels commonly used in the automobile industry, were investigated under various loading conditions. The yield strengths of these sheet steels vary from 58 to 165 ksi.
In addition to the test data gathered in this phase of study, the experimental results obtained from the beam tests conducted at Inland Steel Company and Ford Motor Company were carefully evaluated. The evaluation indicated that the present available …
Microcomputer Implementation Of Santa: A Personnel Management Model, J. R. Wright, Steven Christian Egly
Microcomputer Implementation Of Santa: A Personnel Management Model, J. R. Wright, Steven Christian Egly
JTRP Technical Reports
No abstract provided.
Drilled Pilers Used For Slope Stabilization, Michael William Oakland, Jean-Lou Chameau
Drilled Pilers Used For Slope Stabilization, Michael William Oakland, Jean-Lou Chameau
JTRP Technical Reports
No abstract provided.
Estimation Of Equivalent Axleloads, John A. Deacon, Jerry G. Pigman, Jesse G. Mayes
Estimation Of Equivalent Axleloads, John A. Deacon, Jerry G. Pigman, Jesse G. Mayes
Kentucky Transportation Center Research Report
The primary objective of this research study was to develop a procedure for estimating equivalent axle loads for purposes of flexible-pavement design. Maximum use was made of historical data and well-accepted procedures were used in developing the prediction model. A series of computer programs was developed to summarize truck-weight and classification data such that traffic characteristics could be estimated from a matrix of data classified by geographic area, Federal highway system, volume, and extent of coal haulage. An equation was developed with the following seven parameters as independent variables; 1) annual average daily traffic volume, 2) average fraction of trucks …
A Computerized Analysis Of Flexible Pavement Rutting Behavior (Pavrut), David L. Allen, Robert C. Deen
A Computerized Analysis Of Flexible Pavement Rutting Behavior (Pavrut), David L. Allen, Robert C. Deen
Kentucky Transportation Center Research Report
The behavior of asphalt-bound layers, unbound aggregate bases, and foundation soils (subgrades) may be affected by such variables as gradation, asphalt and (or) moisture contents, type of aggregate, density, method of compaction, temperature, magnitude and frequency of loading, duration of each load cycle, and other less significant variables. The complex interaction of all these variables yields a composite behavior for a particular pavement structure that could become manifest in some form of distress or even complete "failure."
Flexible pavements are susceptible to rutting. But it is not well known where and to what extent rutting takes place within a pavement …
Jefferson Freeway Investigation (Westbound Lanes), Herbert F. Southgate, Gary W. Sharpe, Theodore Hopwood Ii, James H. Havens, Mark Anderson, David Q. Hunsucker, Robert C. Deen
Jefferson Freeway Investigation (Westbound Lanes), Herbert F. Southgate, Gary W. Sharpe, Theodore Hopwood Ii, James H. Havens, Mark Anderson, David Q. Hunsucker, Robert C. Deen
Kentucky Transportation Center Research Report
The Kentucky Transportation Research Program (KTRP) was retained to perform an investigation for the Kentucky Department of Highways to assess damage that may be attributed to passage of the Model 992C over portions of the Jefferson Freeway. KTRP investigators conducted visual surveys, performed Road Rater deflection tests, did in-place California Bearing Ratio (CBR) testing on subgrade materials, obtained pavement cores, and conducted laboratory tests and analyses.
It appeared the pavement was damaged by the front-end loader. No evidence of damage to the bridges attributable to the front-end loader was detected. Damage to the pavement attributable to passage of the front-end …
Forecasting For Local Water Management, Douglas Alan Putnam
Forecasting For Local Water Management, Douglas Alan Putnam
Dissertations and Theses
Forecast models are investigated and developed for use in local water management to aid in determining short term water requirements and availability. The forecast models include precipitation occurrence and depth using a Markov chain model, temperature and solar radiation with a multivariate autoregressive model, and streamflow with autoregressive-moving average models. The precipitation, temperature, and solar radiation forecasts are used with a soil moisture model to determine water demands. A state space approach to the Muskingum-Cunge streamflow routing technique is developed. The forecast water demands and streamflow forecasts are used as inputs to this routing model. Forecast model errors and propagation …
Traffic Trends And Their Relationship To Highway-Use Revenues, Jerry G. Pigman, Manouchehr Vaziri
Traffic Trends And Their Relationship To Highway-Use Revenues, Jerry G. Pigman, Manouchehr Vaziri
Kentucky Transportation Center Research Report
With increasing concerns about the present level of highway funding, this study was initiated to investigate historical trends and to develop predictive methodologies for considering alternatives available for increasing highway revenues. Emphasis was placed on historical trends, and a data base of highway-related and socio-economic variables were prepared to document the relationship between these variables and highway-user revenues. A historical file of 37 variables was prepared for the period 1964 through 1984.
As a means of investigating future alternatives that will affect highway-user revenues, a series of nine equations or models were developed that represented historical data. Input data necessary …
The Endangered Species Act And Western Water Projects, Lawrence J. Macdonnell
The Endangered Species Act And Western Water Projects, Lawrence J. Macdonnell
Western Water Law in Transition (Summer Conference, June 3-5)
20 pages.
Contains references.
Water Project Financing Needs In Colorado, J. William Mcdonald
Water Project Financing Needs In Colorado, J. William Mcdonald
Western Water Law in Transition (Summer Conference, June 3-5)
12 pages.
Federal/State Relations In Theory And Practice: A Sovereignty Mismatch, Charles T. Dumars
Federal/State Relations In Theory And Practice: A Sovereignty Mismatch, Charles T. Dumars
Western Water Law in Transition (Summer Conference, June 3-5)
12 pages.
Contains footnotes.