Engineering Commons^™

Soil-Shrinkage Induced Structural Failure, David Newton Richardson, Richard Wesley Stephenson, Daniel Molloy

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This Paper Describes an Investigation into the Causes of Structural Damage to a Retirement Home and the Subsequent Rehabilitation Project. the Investigation Revealed that the Damage Was Caused by Shrinkage of the Soils Beneath the Structure's Foundation as a Result of Dry Weather, Shrinkage-Prone Characteristics of the soils, Deviation from the Original Design, and Poor Construction Techniques. the Structure Was Subsequently Underpinned to Rock using the Inclined Drilled Pier Method. Interaction between Design and Construction Professionals is Also Presented. © ASCE.

Managing Artificial Groundwater Recharge, Richard C. Peralta, K. G. Kowalski, H. J. Morel-Seytoux

Civil and Environmental Engineering Faculty Publications

Increase in maximum groundwater mining resulting from recharge basin usage in the Grand Prairie is reported. Management model incorporates new influence coefficients that describe effect on groundwater levels of simultaneously' occurring basin/aquifer interflow and groundwater extraction.

Guarding Against Machine Hazards, R. A. Cavaletto

BioResource and Agricultural Engineering

Successful guarding strategies requires knowledge of machine functions, the physical and psychological characteristics of man, and the their interactions. Machine hazards are identified along with recognized guarding methods. Material is included that could be used to teach this subject (case study, prob!em set, glossary}.

A Transient Electromagnetic Flowmeter, Paul J. Lefebvre, William W. Durgin

Office of the Provost Scholarship

An electromagnetic flowmeter was developed to measure transient flows with a frequency response of 60 Hz. The approach taken was to develop suitable electronics to replace the electronics of a commercially available electromagnetic flowmeter normally used for steady-state operation. Use of the commercially available flowmeter body, which includes the magnetic coils, core, and signal electrodes, provided a relatively economical means of fabricating the transient flowmeter. A transient flow calibration facility consisting of a free-falling water column was also designed and built. Results of the calibrations are presented and show that the flowmeter can accurately measure transient flows up to the …

Radiant Energy Transfer And Radiant Barrier Systems In Buildings, Florida Solar Energy Center, Philip W. Fairey

FSEC Energy Research Center®

In Florida and other southern climates we depend on a number of strategies to keep heat out of buildings. Mostly, these affect heat gains by conduction or convection. In the average house, insulating walls and ceilings primarily restricts conduction. Double-glazed windows restrict both conductive and convective heat gain. We have largely ignored radiation - the third means of heat transfer - except in using window treatments and coatings that reflect, absorb or shade from solar energy. But research points to exciting potential for reducing heat gain in buildings by controlling radiation transfer in walls and ceilings through the use of …

Techniques For Shading Residential Walls And Windows, Florida Solar Energy Center, Philip W. Fairey

FSEC Energy Research Center®

Solar radiation is a major heat source in buildings - welcome in cold weather but a summertime problem. Florida's long cooling season and short heating season increase the importance of protecting windows, walls and sliding glass doors during hot weather, while still permitting solar heat to enter a building during cold weather. cooling and heating energy savings of 10% - 20% are possible through good shading strategies. Properly designed roof overhangs can provide adequate sun protection, especially for south-facing surfaces. Vertical shading devices such as trees, trellises, trellised vines, shutters, shading screens awnings and exterior roll blinds are also effective. …

Solar Water Heater Troubleshooting Checklist, Florida Solar Energy Center

FSEC Energy Research Center®

Lists the Symptom, Component, Possible Cause, and Remedy/Check of possible solar hot water heater problems.

Solar Ovens And Cookers, Florida Solar Energy Center

FSEC Energy Research Center®

Solar ovens work much like solar collectors used in domestic water heating systems. Both collect solar radiation, convert it to heat and transfer it to another substance. Solar ovens, however, focus the sun's rays with reflective surfaces on one point. The object of the sun's energy in the solar oven is the food.

Recipes For Solar Cooking, Florida Solar Energy Center, Jo Townsend

FSEC Energy Research Center®

As energy extension agent for the University of Florida Extension Service, Jo Townsend serves as the energy educator to small businesses in central Florida. She conducts employee programs on energy conservation in the workplace. She received her B.S. in home economics from Florida State University and her M.E. from the University of Central Florida. Formerly a home economist for the Florida cooperative Extension Service, Townsend researched and tested recipes for use in microwaves when they first gained popularity. She has been a consultant to Southern Living magazine and to Florida's seafood industry. For the last year, she has tested recipes …

Survey Of The Quality Control Program At A Large Nanufacturing Corporation And Application Of An Identified Decision Making Tool To Solve The Most Costly Quality Problem, Giles Wright Jr.

Graduate Research Papers

The problem of this study has two major components.

1. Identify the major quality control concerns at a large manufacturing corporation.

2. Apply a selected decision-making tool to develop a solution for the most costly quality problem.

Shear Layer Coupling With Side-Branch Resonators, D. D. Erickson, William W. Durgin, C. F. Maguire Iii, M. J. Moeller

Office of the Provost Scholarship

High velocity flow past the junction of a side branch with a pipe can result in the excitation of depth-mode standing waves in the branch. The shear layer separating the main stream flow and the cavity provides coupling between the driving and the driven flow. Photographic evidence indicates that large scale vortex structures develop at the shear layer. The vortex formation process involves strongly non-linear instability of the shear layer and may be characterized as a non-linear fluid mechanical oscillator. The standing wave system formed in the cavity is essentially an acoustic wave system of nearly linear character. The principle …

Cooling With Ventilation, Florida Solar Energy Center, Subrato Chandra

FSEC Energy Research Center®

In keeping with the national energy policy goal of fostering an adequate supply of energy at a reasonable cost, the United States Department of Energy (DOE) supports a variety of programs to promote a balanced and mixed energy resource system. The mission of the DOE Solar Building Research and Development Program is to support this goal by providing for the development of solar technology alternatives for the buildings sector. It is the goal of the Program to establish a proven technology base to allow industry to develop solar products and designs for buildings that are economically competitive and can contribute …

Acuta Enews December 1986, Vol. 15, No. 12

ACUTA Newsletters

In This Issue

Loyola University, New Orleans

Party Line

Region IV Hosts Seminar

Making the Phone Into a P.O. Box

Michael Toner Is First Recipient of Portfolio Award

Telecommunications Technology Seen Outpacing AI

The Mg-Sb System, A. A. Nayeb-Hashemi, J. Beverley Clark

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Status Report For Selected Projects Containing Experimental Features, Kentucky Transportation Research Program

Kentucky Transportation Center Research Report

Projects containing experimental features or innovative concepts were selected for long-term monitoring and are reported herein. Certain projects are recommended for more intensive investigation under other appropriate ongoing studies.

Discussion Of "Lime-Enhanced Reduction Of Sulfide Concentrates: A Thermodynamic Discussion", Arthur E. Morris, Harry Flynn

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

A Checklist And Sample Specifications For Single And/Or Tandem Axle Dump Trucks, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

This publication is a revision to the February 1983 publication of the same title and contains a checklist and sample specifications to assist Indiana's Local Public Agencies in the procurement of dump trucks for use in the maintenance of local roads and streets. Most LPA's do not purchase such equipment in large numbers, hence many do not have highly qualified and experienced staff to assist in the development of the specifications for purchasing new equipment.

This checklist and the sample specifications provide for individual preferences. They are not intended to dictate decisions or restrict bidding. If followed, they will assure …

Polarizing Beam Splitters For Infrared And Millimeter Waves Using Single-Layer-Coated Dielectric Slab Or Unbacked Films, R. M.A. Azzam

Electrical Engineering Faculty Publications

No abstract provided.

Response Of The Rotating-Detector Ellipsometer To Incident Partially Polarized Light, R. M.A. Azzam

Electrical Engineering Faculty Publications

No abstract provided.

Optimal Groundwater Mining Methods, Richard C. Peralta, Krzysztof G. Kowalski

Civil and Environmental Engineering Faculty Publications

No abstract provided.

Metal Waveguide Modeling Of Tapered Quadratic Index Media, Lee W. Casperson, Bahram Zandi

Electrical and Computer Engineering Faculty Publications and Presentations

The basic electromagnetic properties of tapered graded index fibers are equivalent to the properties of a class of concave metallic waveguides. Although useful in their own right, such metal waveguides also provide a straightforward and inexpensive means for studying the characteristics of more complicated tapered media.

Multistep Measurement Of Plantar Pressure Alterations Using Metatarsal Pads, An-Hsiung Chang, Ziad U. Abu-Faraj, Gerald F. Harris, Joe Nery, Michael J. Shereff

Biomedical Engineering Faculty Research and Publications

Metatarsal pads are frequently prescribed for nonoperative management of metatarsalgia due to various etiologies. When appropriately placed, they are effective in reducing pressures under the metatarsal heads on the plantar surface of the foot. Despite the positive clinical reports that have been cited, there are no quantitative studies documenting the load redistribution effects of these pads during multiple step usage within the shoe environment. The objective of this study was to assess changes in plantar pressure metrics resulting from pad use. Ten normal adult male subjects were tested during a series of 400-step trials. Pressures were recorded from eight discrete …

Test 1606: John Deere 2955 Diesel 16 And 8-Speed (Tss Transmission), 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 …

Test 1605: John Deere 2755 Diesel 16-Speed Also 8-Speed (Tss Transmission), 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 …

Development Of A Unified Approach To The Design Of Cold-Formed Steel Members, Teoman Peköz

American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)

No abstract provided.

Source Testing Software, Harold M. Cota

Civil and Environmental Engineering

Ifyou have been looking for a way to speed the calculation or reporting of source test data, this month's column will be of interest to you. Included in this review are one commercial program, several noncommercial programs, and a summary of programs that are available for programmable calculators. The author would appreciate knowing of similar programs that you may have developed or used.

Runoff And Erosion As Affected By Sorghum And Soybean Residue, John E. Gilley, S. C. Finkner, G. E. Varvel

Department of Agricultural and Biological Systems Engineering: Faculty Publications

A rainfall simulator was used to measure the effects of varying rates of sorghum and soybean residue on runoff and erosion. In general, increased surface cover caused reduced runoff, sediment concentration and soil loss. Substantial reductions in erosion resulted from the use of small amounts of crop residue. Regression equations were obtained which related surface cover to residue mass. Equations describing relative runoff, sediment concentration and soil loss as a function of surface cover were also developed. Runoff, sediment concentration and soil loss were all found to be highly correlated to surface cover.

Vegetable Oil As An Emergency Fuel, E. Holmes, Joseph L. Taraba, George M. Turner

Agricultural Engineering Energy Series

The unstable world political situation combined with the fact that a large amount of the world's oil reserves is located in the Middle East means we must continue to search for an alternate fuel source for our agricultural machinery. It is well-known that there is a limited amount of fossil fuels and even with no world political problems the demand will exceed supply in the not-too-distant future. The United States currently imports fossil fuels because we use more than we produce. Vegetable oils are a renewable resource. They offer a means of keeping our agricultural equipment operating in an oil …

Impact Evaluation Of The Lexington-Fayette County Traffic Alcohol Program (1982-1986), Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

This report is a final evaluation of four years of increased police enforcement to reduce alcohol-related accidents in Lexington-Fayette County, Kentucky. Three types of data were collected as a means of evaluating the Traffic Alcohol Program; accident data, arrest and adjudication data, and cost-effectiveness data.

Results from before-and-after comparisons and time-series analysis show alcohol-related accidents decreased significantly during the study period. When comparing two years before with four years during the increased enforcement, the reduction in alcohol-related accidents during hours of increased enforcement was 37.3 percent using standard before and after analysis and 36.4 percent using time-series analysis. For all …

Investigation Of Collapse Of Long-Span Structure Under Ky 80 In Floyd County, Ronald D. Hughes, David L. Allen, Robert C. Deen

Kentucky Transportation Center Research Report

The Kentucky Transportation Research Program (KTRP) was requested to obtain and review design, construction, and post construction documents relative to the long-span structure under KY 80 in Floyd County. Telephone and in-person contacts were made with various agency officials involved with the structure in an endeavor to collect pertinent data. Documents that were initially presented to KTRP staff were thoroughly reviewed and a draft report based upon information submitted was prepared. The draft report included a scenario relating to a probable sequence of events that could have been significant in the ultimate collapse of the structure.

Soon after distribution of …