Civil and Environmental Engineering Commons^™

Literature Survey Of Cold-Formed Structures, Roger A. Laboube

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.

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.

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 …

Shrinkage Compensation Deck Concrete (Ky 1974 Bridge Over Tates Creek Road), David Q. Hunsucker

Kentucky Transportation Center Research Report

This report summarizes the construction activities on an experimental bridge deck utilizing shrinkage compensating concrete. The experimental concrete is characterized in terms of freeze/thaw durability, compressive strength, and elastic moduli.

Rutting And Longitudinal Cracking And Temperature Cracking: A Case Study (Us 23, Greenup County, Mp 6.0 To 28.8), James H. Havens, Gary W. Sharpe, David L. Allen, David Q. Hunsucker

Kentucky Transportation Center Research Report

US 23, Greenup County, Ashland-South Shore, developed rutting and transverse and longitudinal cracking. The pavement was about 14 years old and had served heavy trucks. Road Rater tests, crack surveys, and various inspections had been made prior to the fall of 1985. Inspection and a report by KTRP led to further evaluation, examination internally by trenching, and additional tests and surveys. This report combines pertinent facts and records. It includes recommendations for overlayment.

Irish H & V News

Building Services Engineering

No abstract provided.

Parametric Excitation Of An Axially Moving Band By Periodic Edge Loading, W-Z Ben Wu, C. D. Mote

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Simple torsion parametric resonance and combination torsion-bending parametric resonance can be excited in an axially moving band by an in-plane periodic edge loading that is normal to the longitudinal axis of the band. The model simulates band saws, belts, magnetic tapes and like systems under edge forces. Sum combination instabilities, in particular, permit the excitation of low frequency resonances by higher frequency edge forces. Simple bending, combination torsion-torsion, combination bending-bending and difference type parametric instabilities are not excited by periodic normal edge forces. The space of band parameters leading to parametric instability shrinks with increasing axial tension and with increasing …

Lime Stabilization Of Pavement Subgrade Soils Of Section Aa-19 Of The Alexandria-Ashland Highway, Tommy C. Hopkins, David L. Allen

Kentucky Transportation Center Research Report

The purposes of this study were to evaluate the effects of hydrated lime on the soils from Section AA-19 of the Alexandria-Ashland Highway and determine if the engineering properties of the soils from Section AA-19 could be improved by lime stabilization. Soil samples used in the study were obtained by· the Kentucky Transportation Research Program on March 25, 1986. Three bag samples were collected from Section AA-19 (Lewis County, Kentucky) of the Alexandria-Ashland Highway, Stations 1630 (Sample A), 1495 (Sample B), and 1675+50 (Sample C), respectively. Based on a review of the geology of Section AA-19, the three sampling sites …

Irish H & V News

Building Services Engineering

No abstract provided.

Experimental Study Of Rectangular Reinforced Concrete Members Under Combined Biaxial Bending And Tension, Naresh B. Patel

Theses

In practice it is a very common case to have a column subjected to combined effects of axial tension and biaxial bending moments and very few efforts are done to get good design approach for such special members.

So for this purpose, experiments were carried out on rectangular shapecolumns. Rectangular shaped columns were casted in homogeneous with brackets - one on each end and at connections haunches were provided to avoid the possible end failure. The overall shape of this configuration was "H" shape. Two hydraulic jacks were used; one on either side of the columns and thus column section …

Design Of Highway Embankment On Unstable Natural Slopes, Charles S. Bishop, Donald W. Armour Jr., Tommy C. Hopkins

Kentucky Transportation Center Research Report

Sections of the new Alexandria-Ashland (M) highway in northeastern Kentucky must be located on and through natural slopes of the Kope and Crab Orchard Formations that consist mainly of shales. Numerous highway embankment and cut slope failures have occurred In these two geologic formations In past years. The shales of these formations have very poor and undesirable engineering properties. Many stability problems encountered with the Kope and Crab Orchard shales are caused primarily by the tendency of those shales to breakdown when exposed to water and produce clays and clayey silts of relatively low shear strengths. Construction of highway embankments …

Distributions Of Strain Components And Work Within Flexible Pavement Structures, Herbert F. Southgate, Robert C. Deen

Kentucky Transportation Center Research Report

An investigation was made to determine the location along the centerline of the axle of the maximum strain energy density, or work, in the pavement as defined by classical physics. The location is under the inside edge of either dual tire. The most influential strain was the shear component. The distribution of shear strains and stresses with depth through the full-depth asphaltic concrete and into the subgrade was investigated. Using Simpson's rule for an even number of increments, or using the trapezoidal rule, allows the summation of strain energy density calculated at various depths. This sum multiplied by a unit …

Manual On Bridge/Culvert Maintenance, Gary W. Sharpe, Theodore Hopwood Ii

Kentucky Transportation Center Research Report

The basic objective of this course is to provide background (introductory) technical information that will aid the manager of bridge/culvert installations. In most instances, information presented may not be sufficiently complete for the student to perform the required work. However, the intent is more to familiarize than to instruct In many instances, professional engineering and experienced labor are necessary to ensure successful completion of tasks. Once the local official responsible for bridges and culverts has completed this workshop, he should have a basic understanding of

• the most common bridges/culverts encountered in counties and municipalities,
• the major components of common bridge/culvert …

1986 Safety Belt And Child Safety Seat Usage Rates In Kentucky, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objective of the survey summarized in this report is to establish 1986 safety belt and child safety seat usage rates in Kentucky to compare to those determined from previous surveys. Also included in this report is an analysis of accident records evaluating the effectiveness of safety belts.

Statewide usage rages in the 19 cities previously surveyed in 1982, 1983, 1984, and 1985 showed that driver safety belt usage increased in 1986 while child safety seat and safety belt usage remained at the 1984 and 1985 levels. The statewide usage rate of safety belts by drivers was 13.0 percent in …

Water Management: Making Sure Everyone Gets A "Reasonable" Share, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

No abstract provided.

Investigation Of Water-Binding Properties Of Industrial Sludges Using Thermal Analysis As A Monitoring Tool, Ron Josephson

Theses

As part of a program to develop new and more cost-effective dewatering approaches for industrial hazardous wastes, sludges and synthetic "model" materials were analyzed by thermal methods in an attempt to comprehend their water-binding qualities and differentiate free and bound water. These thermal methods included Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TG), and Differential Scanning Calorimetry (DSC). Industrial sludges and laboratory models were compared using both standard heating techniques and subambient cooling (to -60°C). This latter technique provides direct indication of the amount of free water. This information can be very useful in evaluating and improving dewatering techniques for industrial …

Tests On Square Reinforced Concrete Members Under Combined Biaxial Bending And Tension, Bhadresh Shah

Theses

The research reported herein studies the ultimate strength behavior for square-shaped reinforced concrete short columns under combined biaxial bending and tension that is a common design problem. The present ACI building code (ACI 318-83) (1) and design hand book (2) do not offer an insight into the determination of strength and ductility behavior of biaxially loaded reinforced concrete columns. A design equation developed by Hsu (3,4,5 ) to study the ultimate strength behavior and failure surfaces for members under these combined action was used and the computed results were compared with the present analytical results and experimental results for square-shaped …

Hydraulic Design Algorithms For Upgrading And Enhancing Water Distribution Systems, Don J. Wood, William T. Gilbert

KWRRI Research Reports

The primary objective of this work was to develop algorithms for directly determining design characteristics for effectively enhancing, modifying or adding to existing water distribution systems. This is accomplished by modifying the basic hydraulic network equations to explicitly determine required design parameters to just meet specified conditions. Initially work was completed on directly determining pipeline diameters and directly determining pipeline and network resistance characteristics. This work was published in technical journals and established the feasibility of the approach but did not demonstrate the scope and versitility of the proposed approach. In this report a general approach is developed and tested …

Evaluation Of I-75 Lane Closures, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

A project on I 75 in Whitley and Laurel Counties during the 1986 construction season involved numerous lane closures associated with spot pavement replacement and joint sealing. Traffic congestion associated with heavy volumes and late merges resulted in the use of the following traffic control devices to supplement standard lane closure devices; 1) variable message signs, 2) supplemental lane closure warning signs, and 3) rumble strips placed in the lane to be closed in advance of the taper.

Results showed a decrease in the percentage of traffic in the lane to be closed with each successive traffic control device in …

Design Of Automotive Structural Components Using High Strength Sheet Steels: Web Crippling Of Cold-Formed Steel Beams, Chiravut Santaputra, Wei-Wen Yu

CCFSS Library (1939 - present)

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 …

Ole Miss Engineer 1986

Ole Miss Engineer

No abstract provided.

Traffic Forecasting For Pavement Design, Harshad R. Desai, Rick Reel, Robert C. Deen, Herbert F. Southgate, Ronald Noble, Vernon L. Tabery, Mark Hallenbeck, Dennis Crimmins, Wiley Cunagin

Kentucky Transportation Center Research Report

The need for improved traffic estimation procedures has been emphasized by several studies that demonstrated that previously available data were not adequate. Some data were not considered representative of actual traffic conditions because of overloaded trucks avoiding weighing scales and insufficient traffic sampling programs. In addition, previous forecasting procedures did not reflect the increases in legal load limits, the significant increase in the number of heavy trucks, or the shift toward larger vehicle types that has occurred in recent years.

Improved estimates of current traffic loadings based on larger samples of much higher quality data would allow development of procedures …

Performance Monitoring Of A Highway Tieback Wall (I 71, Carroll County, Ky 227, Corrective Landslide Measure), Bobby W. Meade, David L. Allen, Tommy C. Hopkins

Kentucky Transportation Center Research Report

A tieback wall was used to control an earth slide on KY 227 in Carroll County. Herein is contained a description of the wall construction and problems encountered during construction. Also included are descriptions of materials used and wall components.

The short-term wall performance indicates the tieback wall has controlled the earth slide and, to date, is a satisfactory solution. Long-term monitoring of the tieback wall will continue.

Economic Analyses Of Millings, Herbert F. Southgate

Kentucky Transportation Center Research Report

Economic analyses were made using 1984 and 1985 contract bid data. Data were identified as to who retained ownership. Recommendations as to who retains ownership are made based upon factors prevalent for a specific candidate pavement and other circumstances.

The Effect Of Grinding On The Sorption Capacity Of Activated Carbon, John Garrett Dempsey

Civil & Environmental Engineering Theses & Dissertations

The current procedure employed to design full scale activated carbon contacting systems is presented in detail and followed by a review of the more important process controls and operating parameters. Inherent limitations of the design procedure are identified, with the need to be able to accurately predict carbon sorption capacity from bench scale analysis determined to be the most important. Some of the more recent models developed to predict activated carbon sorption capacity were analyzed leading to the realization that even the most sophisticated dynamic models were based upon sorption capacities determined from classical isotherm procedures. The validity of the …

A Quantitative Approach To Simulation And Analysis Of Storm Water Systems, John Nathan Paine

Civil & Environmental Engineering Theses & Dissertations

A generalized package of hydrologic and hydraulic models and programs is developed for the quantitative analysis of watersheds and drainage networks. The package is microcomputer based and is available to interested parties. Full documentation is included in the Appendix. The approach applies a lengthy historical rainfall record to the system in continuous simulation. One of the most powerful operational hydraulic routing models available is adopted into the package. Output takes the form of statistical predictions of flood stages, discharges, storage requirements, and rainfall analyses for various return-periods. Computer runs are completely summarized. The package was applied to a 969-acre watershed …

Irish H & V News

Building Services Engineering

No abstract provided.

Analysis And Prediction Of The Water Temperature Of The Mckenzie River, Oregon Using The Equilibrium Temperature Approach, R. Peder Hansen

Dissertations and Theses

A one dimensional, steady flow, unsteady temperature model is used to evaluate the effects of two U.S. Army Corps of Engineers (COE) dams and resulting reservoirs on hourly water temperatures of the mainstem McKenzie River from Delta Park (RM 62.1) to Leaburg Dam (RM 38.8). Both COE projects are on tributaries to the McKenzie River and at present have only bottom withdrawl capabilities.

Water temperatures were simulated using the equilibrium temperature approach with air temperature used to estimate equilibrium temperature and also using computed hourly equilibrium temperature. Results obtained using computed equilibrium temperatures were less satisfactory than results using air …