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Articles 70201 - 70230 of 75021

Full-Text Articles in Engineering

Test 1409: Hesston Fiat 1380 Dt Diesel, Nebraska Tractor Test Lab Jan 1981

Test 1409: Hesston Fiat 1380 Dt Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

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Phase 1 Inspection Report: National Dam Safety Program. White River Basin. Ozark Lead Tailings Dam, Reynolds County, Missouri, Woodward-Clyde Consultants, Chicago, Illinois Jan 1981

Phase 1 Inspection Report: National Dam Safety Program. White River Basin. Ozark Lead Tailings Dam, Reynolds County, Missouri, Woodward-Clyde Consultants, Chicago, Illinois

Missouri Dam Safety Inspection Reports

This report presents the results of field inspection and evaluation of the Ozark Lead Tailings Dam. It was prepared under the National Program of Inspection of Non-Federal Dams.

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Steel Deck Institute, Inc. Design Manual For Composite Decks, Form Decks, And Roof Decks, Steel Deck Institute Jan 1981

Steel Deck Institute, Inc. Design Manual For Composite Decks, Form Decks, And Roof Decks, Steel Deck Institute

Steel Deck Institute (SDI) Specifications and Manuals (1939 - present)

No abstract provided.

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Steel Deck Institute Diaphragm Design Manual First Edition, Larry D. Luttrell Jan 1981

Steel Deck Institute Diaphragm Design Manual First Edition, Larry D. Luttrell

Steel Deck Institute (SDI) Specifications and Manuals (1939 - present)

The Major Units Laboratory at West Virginia University has been involved in full-scale diaphragm studies for the past fifteen years. The work has covered tests on a wide range of deck panel types, metal building wall systems, panels with insulating concrete fill, and plywood assemblies, all used as diaphragms, and under static, cyclic, and dynamic loading. Connection performance, critical to diaphragm behavior, has been evaluated through an extensive test program covering arc-spot (puddle) welds, different types of screws, and power driven pins. These have established fastener strength limits and have been especially important for defining fastener flexibility factors.

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Bolted Connections In Cold Formed Steel Structures, Wei-Wen Yu, Randall L. Mosby Jan 1981

Bolted Connections In Cold Formed Steel Structures, Wei-Wen Yu, Randall L. Mosby

CCFSS Library (1939 - present)

No abstract provided.

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Fire Protection Through Modern Day Building Codes, D. F. Boring, James C. Spence, Walter G. Wells Jan 1981

Fire Protection Through Modern Day Building Codes, D. F. Boring, James C. Spence, Walter G. Wells

CCFSS Library (1939 - present)

In this edition, fire protection regulations are not included and requirements of model codes and recommendations of code writing organizations are cited in the text. Much progress has been made in building construction techniques and in material development since the publication of the First Edition in 1944. While this Fifth Edition reflects that progress, it adheres to its original purpose to help develop construction standards for safeguarding life and property from fire.

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Phase 1 Inspection Report: National Dam Safety Program. Mississippi - Kaskaskia - St. Louis Basin. Lac Marseilles Dam, St. Francois County, Missouri, Woodward-Clyde Consultants, Chicago, Illinois Jan 1981

Phase 1 Inspection Report: National Dam Safety Program. Mississippi - Kaskaskia - St. Louis Basin. Lac Marseilles Dam, St. Francois County, Missouri, Woodward-Clyde Consultants, Chicago, Illinois

Missouri Dam Safety Inspection Reports

This report presents the results of field inspection and evaluation of the Lac Marseilles Dam. It was prepared under the National Program of Inspection of Non-Federal Dams.

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Phase 1 Inspection Report: National Dam Safety Program. Mississippi - Kaskaskia - St. Louis Basin. Lake Adelle Dam, Jefferson County, Missouri, Crawford, Murphy & Tilly, Inc., Springfield, Illinois, A & H Engineering Corporation, Carbondale, Illinois Jan 1981

Phase 1 Inspection Report: National Dam Safety Program. Mississippi - Kaskaskia - St. Louis Basin. Lake Adelle Dam, Jefferson County, Missouri, Crawford, Murphy & Tilly, Inc., Springfield, Illinois, A & H Engineering Corporation, Carbondale, Illinois

Missouri Dam Safety Inspection Reports

This report is prepared under guidance contained in Department of the Army, Office of the Chief of Engineers, Recommended Guidelines For Safety Inspection Of Dams, for a Phase I investigation. The purpose of a Phase I investigation is to identify expeditiously those dams which may pose hazards to human life or property. The assessment of the general conditions of the dam is based upon available data and visual inspections. Detailed investigations and analyses involving topographic mapping, subsurface Investigations, testing and detailed computational evaluations are beyond the scope of a Phase I investigation; however, the investigation is intended to identify any …

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Characteristics Of The Background Emission Spectrum From A Miniature Inductively-Coupled Plasma, Richard N. Savage, G. M. Hieftje Jan 1981

Characteristics Of The Background Emission Spectrum From A Miniature Inductively-Coupled Plasma, Richard N. Savage, G. M. Hieftje

Materials Engineering

The spectral characteristics of the background radiation emitted by a miniature inductively-coupled plasma (i.c.p.) are carefully examined and methods for reducing undesirable features discussed. The complex nature of the background emission spectrum for the mini-i.c.p. indicates that careful line selection criteria and background correction procedures should be employed. Extending the torch coolant tube to the bottom of the region being observed in the plasma proved to be the most effective method for reducing undesirable spectral band features. Acute changes in background emission levels with r.f. power and nebulizer gas flow rates emphasize the need for careful control of these parameters …

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Test 1399: Massey-Ferguson Mf 2805 Diesel 8-Speed, Nebraska Tractor Test Lab Jan 1981

Test 1399: Massey-Ferguson Mf 2805 Diesel 8-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

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Test 1401: Steiger Couger Iii St-280 Diesel 20-Speed, Nebraska Tractor Test Lab Jan 1981

Test 1401: Steiger Couger Iii St-280 Diesel 20-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

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Aquatic Habitat Inventory Of The Missouri River From Gavins Point Dam To Ponca State Park, Nebraska, James C. Schmulbach, Jeffrey J. Schuckman, Eric A. Nelson Jan 1981

Aquatic Habitat Inventory Of The Missouri River From Gavins Point Dam To Ponca State Park, Nebraska, James C. Schmulbach, Jeffrey J. Schuckman, Eric A. Nelson

United States Army Corps of Engineers, Omaha District

One of the few reaches of the Missouri River which remains in a relatively natural free-flowing state is a 93 km segment extending from Gavins Point Dam to Ponca State Park, NB. This reach of the river was designated as a National Recreational River (P.L.95-625, Sect. 707, 1978) because the natural and cultural values of this section were considered worthy of preservation. Early in 1979, the Secretary of the Interior designated the Heritage Conservation and Recreation Service (HCRS) as the agency responsible for developing a management plan for the Missouri Recreation River. The HCRS teamed with the U.S. Army Corps …

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Missouri National Recreational River: Native American Cultural Resources, John Ludwickson, Donald Blakeslee, John O'Shea Jan 1981

Missouri National Recreational River: Native American Cultural Resources, John Ludwickson, Donald Blakeslee, John O'Shea

United States Army Corps of Engineers, Omaha District

An inventory of known and identifiable cultural resources referrable to Native American populations was undertaken for a corridor along the new Missouri National Recreational River, roughly from Gavin's Foint Dam to Ponca, Nebraska. These resources included archaeological sites and collections, ethnographic and ethnohistorical data and relevant environmental background information. Using these data the Native American occupation of the Missouri National Recreational River area was synthesized into a regional overview which stresses culture-historical developments and changing adaptations to the natural environment. Problems for continuing research utilizing existing archaeological collections were developed, and recommendations for continued field work to fill in gaps …

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An Approximation Method Of Calculating The Present Worth Of Nonintegrable Cash Flow Patterns, Brian Almond, Donald S. Remer Jan 1981

An Approximation Method Of Calculating The Present Worth Of Nonintegrable Cash Flow Patterns, Brian Almond, Donald S. Remer

All HMC Faculty Publications and Research

An approximation method is provided for calculating the present worth of nonintegrable continuous cash flows that have common industrial economic applications. Two limiting cases of particular use in engineering screening analyses are given for each model. Practical examples are presented to illustrate the application of the cash flow models to manpower reductions due to computerized process control and to cash flows for a pollution-abatement facility.

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A Simulation Model For Assessing Alternate Strategies For Beef Production With Land, Energy And Economic Constraints, Otto J. Loewer, E. M. Smith, G. Benock, Thomas C. Bridges, Larry G. Wells, Nelson Gay, S. Burgess, L. Springate, David L. Debertin Jan 1981

A Simulation Model For Assessing Alternate Strategies For Beef Production With Land, Energy And Economic Constraints, Otto J. Loewer, E. M. Smith, G. Benock, Thomas C. Bridges, Larry G. Wells, Nelson Gay, S. Burgess, L. Springate, David L. Debertin

Biosystems and Agricultural Engineering Faculty Publications

A computer model has been developed to analyze alternate management strategies and energy and economic constraints. Daily production of beef animals and growing crops is simulated in response to prevailing conditions and system interactions using the GASP IV simulation language. Complete inventories of plant dry matter, animal status, production resources and economic net worth are maintained over the simulation period.

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New Animal-Waste Structure Permit Procedures, Joseph L. Taraba Jan 1981

New Animal-Waste Structure Permit Procedures, Joseph L. Taraba

Agricultural Engineering Extension Updates

Over the past two years, there have been several changes in the Power & Machinery requirements of, and in the procedures for, obtaining permits for animal-waste holding structures. The Division of Water (DOW) in the Department for Natural Resources and Environmental Protection (DNREP), which administers the Kentucky Water Pollution Law (KRS 224), has determined that the statutes require them to review and to approve all agricultural animal-waste-holding facilities constructed in Kentucky (KRS 224.033(19)). Because of their review, they have simplified the procedures and brought the requirements for waste disposal systems into agreement with the state law. At the present time, …

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Active Residential Solar Heating, Blaine F. Parker, Richard Hiatt, Sandy Holland Jan 1981

Active Residential Solar Heating, Blaine F. Parker, Richard Hiatt, Sandy Holland

Agricultural Engineering Extension Updates

This outline on active solar heating has been prepared for extension agent use in Kentucky. It includes some judgments by the authors based on their best professional opinion and the current state of knowledge concerning active solar heat systems.

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Regulation Of Hazardous Waste Disposal On Agricultural Land, Joseph L. Taraba Jan 1981

Regulation Of Hazardous Waste Disposal On Agricultural Land, Joseph L. Taraba

Agricultural Engineering Extension Updates

In the Commonwealth of Kentucky, the Division of Waste Management (DWM) of the Department of Natural Resources and Environmental Protection (DNP & EP) has the responsibility of regulating the hazardous waste program. A policy statement from the DWM was issued on June 9, 1981, concerning wastes generated from agricultural operations, i.e., farming. In summary, the statutory definition of a hazardous waste does not apply to animal manures and crop residues that are returned to the soil as a fertilizer or as a soil conditioner. Further, it states a hazardous waste shall not apply to pesticides, herbicides or fertilizers or their …

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Thermodynamic Properties From A Cubic Equation Of State: Avoiding Trivial Roots And Spurious Derivatives, Bruce E. Poling, Edward A. Grens, John M. Prausnltz Jan 1981

Thermodynamic Properties From A Cubic Equation Of State: Avoiding Trivial Roots And Spurious Derivatives, Bruce E. Poling, Edward A. Grens, John M. Prausnltz

Chemical and Biochemical Engineering Faculty Research & Creative Works

A simple method is presented to find and avoid trivial roots and spurious derivatives for a cubic equation of state. The method's utility is demonstrated with some illustrative distillation calculations. © 1981, American Chemical Society. All rights reserved.

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Novel Demonstration Of Total Internal Reflection, Dwight C. Look Jan 1981

Novel Demonstration Of Total Internal Reflection, Dwight C. Look

Mechanical and Aerospace Engineering Faculty Research & Creative Works

No abstract provided.

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Model For Evaporation Of A Grain‐Boundary Phase, Manfred Wuttig, Harlan U. Anderson Jan 1981

Model For Evaporation Of A Grain‐Boundary Phase, Manfred Wuttig, Harlan U. Anderson

Materials Science and Engineering Faculty Research & Creative Works

The surface profile which develops in the vicinity of a grain boundary precipitate in the course of evaporation is calculated. It is shown that the presence of the grain boundary precipitate affects the profile significantly if the product of the width of the grain boundary precipitate and the ratio of the evaporation rates of the unperturbed surface and the grain boundary precipitate is larger than one. Copyright © 1981, Wiley Blackwell. All rights reserved

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Energy Siting In Utah: A Programming Model, Donald L. Snyder, John E. Keith, Terrence F. Glover, Gene L. Wooldridge Jan 1981

Energy Siting In Utah: A Programming Model, Donald L. Snyder, John E. Keith, Terrence F. Glover, Gene L. Wooldridge

Reports

Using a conceptual model of a multiple-product firm, the necessary conditions for an optimal input and output allocation were determined for a region constrained by resource availabilities and/or policy constraints. A linear programming model was developed to deteremine the optimal allocation of water between agricultural and coal-fired electrical generating entities as well as the trade offs which could occur if electrical generation were increased. Other areas of potential trade offs such as coal source restrictions and air quality regualtions were also examined. Coal mining and transportation costs were included as were SO2, Nox, and particulate emission rates on a coal …

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Calcium Carbonate Precipitation As Influenced By Stream Primary Production, Gretchen L. Rupp, V. Dean Adams Jan 1981

Calcium Carbonate Precipitation As Influenced By Stream Primary Production, Gretchen L. Rupp, V. Dean Adams

Reports

The potential influence of periphyton photosynthesis on calcium carbonate precipitation was studied for the Logan River, Bear River Mountains, northern Utah. The water chemistry, hydrology, and benthic primary production of the river were monitored for one year. periphyton photosynthesis and calcium carbonate precipitation were measured concurrently in laboratory experiments utilizing radioisotopic tracers. These experiments investigated the effects of water temperature, velocity, and macronutrient concentration on photosynthetically induced calcium carbonate precipitation. In these experiments, the biologic induction of calcium carbonate precipitation was not correlated with water nutrient level. It did, however, reflect water temperature, and was greatest at approximately 10 degrees …

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The Occurrence Of Trihalomethane Compounds In Salt Lake City And Ogden, Utah, Drinking Water Supplies, Thomas Peters, V. Dean Adams, Dennis B. George Jan 1981

The Occurrence Of Trihalomethane Compounds In Salt Lake City And Ogden, Utah, Drinking Water Supplies, Thomas Peters, V. Dean Adams, Dennis B. George

Reports

A purge and trap, gas chromatography system was developed to analyze for trihalomethane (THMs) compounds at the ppb (parts per billion) level in drinking water. Monthly influent and effluent samples were taken from three Weber Basin Water Conservancy Distrcit treatment plants, three Salt Lake City water treatmetn platns, and one Slat Lake Metropolitan water treatment plant. In addition tap water samples were taken at various business and residential locations in Salt Lake City, Utah, and Ogen, Utah. All samples were analyzed for trihalomethanes and total organic carbon (TOC). In addition to monthly sampling, a comparison of the production of THMs …

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The Kinetics Of Rotating Biological Contactors Treating Domestic Wastewater, Abraham Pano, E. Joe Middlebrooks, J. H. Reynolds Jan 1981

The Kinetics Of Rotating Biological Contactors Treating Domestic Wastewater, Abraham Pano, E. Joe Middlebrooks, J. H. Reynolds

Reports

Four, four-stage, laboratory scale rotating biological contactor (RBC) units were employed to develop kinetic models for the RBC process when treating domestic wastewater. The study was conducted at three different temperatures of 5 degrees C, 15 degrees C, and 20 degrees C. Each unit operated at a different constant organic loading rate taht ranged from 4 qCOD/m^2/d to 14 gCOD/m^2/d and at a constand detention time of 2 hours. Carbonaceous substrate removals measured as COD cencentrations with the four-stage RBC's were 80, 85, and 90 percent for 5 degrees C, 15 degrees C, and 20 degrees C, respectively. The major …

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Natural Salinity Removal Processes In Reservoirs, Jay J. Messer, Eugene K. Israelsen, V. Dean Adams Jan 1981

Natural Salinity Removal Processes In Reservoirs, Jay J. Messer, Eugene K. Israelsen, V. Dean Adams

Reports

A small but significant amount of salinity removal has been reported by various authors to occur in mainstem Colorado River reservoirs. Recalculation of some of these salinity budgets, together with a review of the data bases used, usggests taht removal has not often been conclusively demonstrated. Laboratory microcosm experiments and field data indicate that calcium carbonate precipitation, perhaps with some coprecipitation of magnesium carbonate, is the mechanism responsible for most of the salinity removal in Oneida Reservoir, Idaho. Coprecipitation processes (including ion exchange), coagulation, and bioassimilation do not appear to be important natural salinity removal mechanisms. Finally, loss of calcium, …

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A Methodology For Public-Planner Interaction In Multiobjective Project Planning And Evaluation, Mac Mckee, T. Ward Morgan, Rangesan Narayanan, A. Bruce Bishop Jan 1981

A Methodology For Public-Planner Interaction In Multiobjective Project Planning And Evaluation, Mac Mckee, T. Ward Morgan, Rangesan Narayanan, A. Bruce Bishop

Reports

A review of current multiple objective planning techniques is presented. A critique of certain classes of these techniques is offered, especially in terms of the degree to which they facilitate certain information needs of the planning process. Various tools in operations research are used to constructed a new multiple objective planning methodology, called the "Vector Optimization Decision Convergence Algorithm" (VODCA). An application of the methodology pertaining to water resources development in Utah is documented.

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A User's Manual For Computer Programs Used In: Model Choice: An Operational Comparison Of Stochastic Streamflow Models For Droughts, W. Robert James, David S. Bowles, Nath T. Kottegoda Jan 1981

A User's Manual For Computer Programs Used In: Model Choice: An Operational Comparison Of Stochastic Streamflow Models For Droughts, W. Robert James, David S. Bowles, Nath T. Kottegoda

Reports

The rapid development of stochastic or operational hydrology over the past 10 years has led to the need for some comparative analyses of the currently available long-term persistence models. Five annual stochastic streamflow generation models (autoregressive, autoregressive-moviing-average (ARMA), ARMA-Markov, fast fractional Gaussian noise, and broken line) are compared on their ability to preserved drought-related time series properties and annual statistics. Using Monto Carlo generation procedures and comparing the average generated statistics and drought or water supply properties, a basis is established to evaluated model performance on four different Utah study streams. A seasonal disaggregation model is applied to each of …

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Model Choice: An Operational Comparison Of Stochastic Streamflow Models For Droughts, W. Robert James, David S. Bowles, Nath T. Kottegoda Jan 1981

Model Choice: An Operational Comparison Of Stochastic Streamflow Models For Droughts, W. Robert James, David S. Bowles, Nath T. Kottegoda

Reports

The rapid development of stochastic or operational hydrology over the past 10 years has led to the need for some comparative analyses of the currently available long-term persistence models. Five annual stochastic streamflow generation models (autoregressive, autoregressive-moving-average (ARMA), ARMA-Markov, fast fractional Gaussian noise, and broken line) are compared on their ability to preserve drought-related time series properties and annual statistics. Using Monte Carlo generation procedures and comparing the average generated statistics and drought or water supply properties, a basis is established to evalute model performance on four different Utah study streams. A seasonal disaggregation model is applied to each of …

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Hydrosalinity Impacts Of Conservation Measures In The Sevier River Basin, Eugene K. Israelsen Jan 1981

Hydrosalinity Impacts Of Conservation Measures In The Sevier River Basin, Eugene K. Israelsen

Reports

The Sevier River Basin is a water short basin wherein upstream diversions not consumptively used become the water right for downstream users. The diversion-return cycle occurs several times as the stream travels from its mountain source areas to the terminal lake at the lower end of the basin. This study dealt with the proposed implementation of conservation measures which would wawste less diverted water and allow for irrigation of additional acres. The objective was to predict the hydrosalinity impacts of the implementation of these measures. The results indicated that increased consumptive use in the upper areas would decrease the water …

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