Engineering Commons^™

Ole Miss Engineer 1979

Ole Miss Engineer

No abstract provided.

Evaluation Of Triaxial Testing Equipment And Methodologies Of Three Agencies, Tommy C. Hopkins, David L. Allen

Kentucky Transportation Center Research Report

To obtain reliable and consistent shear strength results, which are essential in the design of earth structures, from triaxial tests, careful attention, skill, and judgement must be given to testing procedures and equipment make-up. There are many sources of potential errors in the test, especially when pore pressures are monitored. Consequently, a question inevitably arises concerning tbe quality of triaxial test results obtained by different geotechnical laboratories. The intent of this study was to initiate and help establish a triaxial testing forum whereby any geotechnical laboratory engaged in triaxial testing can check the quality of their triaxial results, and therefore, …

Fire Safe Structural Steel: A Design Guide, Joseph Escalada, Georgi Hall, Brandon Matchen, Hoang Nguyen, Alexander Williams

CCFSS Library (1939 - present)

In 1974, the Constructional Steel Research and Development Organization (CONSTRADO) of England commissioned Ove Amp & Partners to prepare a detailed technical report setting out the most plausible models of flame projection from openings in building facades and the methods of calculating heat transfer from fires to exterior exposed steel columns. The report and an accompanying calculation method were completed in November 1975. In July 1975, the Subcommittee on Fire Teclmology of the Committee on Construction Codes and Standards of American Iron and Steel Institute commissioned a revised major extension of Ove Amp's work, and a two-volume report was completed …

Corrective Measures For Unstable Bridge-Approach Embankment Us 68, Licking River, Blue Licks, E. Gregory Mcnulty

Kentucky Transportation Center Research Report

In January 1979, an in-depth investigation of the unstable bridge-approach embankment, Figure 1, on US 68 over the Licking River in the north central portion of Nicholas County (MP 91-68-B0027) was begun by the Division of Research. This investigation was a continuation of a project initiated by the Division of Materials in 1967. This site is approximately 0.3 miles (0.5 km) north of Stony Creek Road and approximately 7.5 miles (12.0 km) north of Carlisle and 0.8 miles (1.3 km) southwest of Blue Licks Battlefield State Park. The bridge is a three-span, continuous, welded plate girder structure with span lengths …

Seasonal Variations In The Skid Resistance Of Pavements In Kentucky, James L. Burchett, Rolands L. Rizenbergs

Kentucky Transportation Center Research Report

Frequent measurements of skid resistance were made on 20 pavements in common use in Kentucky. Tests were conducted from November 1969 through 1973. Principal analysis involved relating changes in skid resistance to day of the year and relating skid resistance to temperature at the time of test, to average antecedent temperatures, and to average rainfall.

Seasonal variations exhibited an annual sinusoidal cycle. The changes in sand-asphalt and bituminous concrete surfaces under higher volumes of traffic were about 12 skid numbers. The changes in portland cement concrete and bituminous concrete under lower volumes of traffic were about 5 skid numbers. The …

Program For New Observatory Facility For Brigham Young University, Provo, Utah, Byu Department Of Physics And Astronomy

BYU West Mountain Observatory Project

No abstract provided.

Irish H & V News - November & December Combined

Building Services Engineering

No abstract provided.

Adsorption Capabilities Of Adsorbents For Selected Toxic Air Pollutants, Richard Michael Vaccaro

Theses

The relative adsorption capacities of seven toxic, volatile organic air pollutants of either proven or suspected carcinogenic potential were tested on various adsorbents. Tests were run at flow velocities similar to those set in field sampling. This allows for extrapolation of test results to actual ambient air sampling systems. Experimentation was performed using a gas chromatograph (G.C.) equipped with a flame ionization detector. Sample introduction was carried out using the "displacement method" where the sample is introduced to the adsorbent cartridge as a plug.

Incipient elution volumes (V_N), normalized for bulk adsorbent packing volume, were obtained at various …

Ole Miss Engineer 1979

Ole Miss Engineer

No abstract provided.

Truck Design And Usage And Highway Pavement Performance, Robert C. Deen, Herbert F. Southgate

Kentucky Transportation Center Research Report

When the term highway pavement is used, most people think of the moderate to thick systems on which their vehicles travel on intermediate- or high-type roadways. These pavement systems are typically constructed of bituminous concrete or portland cement concrete. This is not to say that low-volume roads do not have a pavement system; however, in case of low-volume roads, the pavement system usually consists of unbound aggregates, sod, soil materials, or at the most very thin or moderate applications of a binding material. It is the high-type pavement systems to which the comments in this paper will be addressed specifically. …

Cracking In Concrete Pavement, Robert C. Deen, James H. Havens, Assaf S. Rahal, Wm. Vernon Azevedo

Kentucky Transportation Center Research Report

Cracking of portland cement concrete pavements is a common, even expected, occurrence. To minimize potentially detrimental effects, it is necessary to understand mechanisms that might be used to explain such behavior so that measures may be developed and implemented to control the occurrence of such cracking. Several "theories" are discussed that might provide the mechanisms of pavement cracking. An alternate meachanism, based on fatigue loading of the concrete by temperature expansions-contrations, for the development of so-called D-cracking is offered.

Irish H & V News

Building Services Engineering

No abstract provided.

The Feasibility Of Change-Of-Use Of Selected State Administered Lands In Utah, Eugene K. Israelsen, Lynn H. Davis

Reports

Many acres of the state come under the jurisdiction of the State Government and are managed by the appropriate department of state government. The Division of State Lands, Department of Natural Resources of the State of Utah is responsible for the management of much of the state owned land. The Division of State Lands leases the lands to various users. Revenues from the leases are used for the support of state administered program such as education. The Division of State Lands desires to manage these lands as efficiently as possible and maximize the rents and thus increase the revenues available …

Water And Land Use Planning For Some State Lands Near Moab, Utah, Eugene K. Israelsen, Lynn H. Davis

Reports

In an attempt to apply better management principles to the control of state lands, the Division of State Lands asked for the study of two questions concerning state administered lands near Moab, Utah. The first question deals with the Moab and Spanish Valleys while the second question applies to Castle Valley some 10 miles northeast of Moab. The Mill Creek Development Project is proposed to provide additional water for agriculture and M & I use in the Moab and Spanish Valleys. The question for consideration is, "How much water from the Mill Creek Development Project Reservoir should the Division of …

Irish H & V News

Building Services Engineering

No abstract provided.

Irish H & V News

Building Services Engineering

No abstract provided.

An Integrated System Employing Alternate Technologies For Liquid And Solid Waste Managment For Intermediate And Small Communities, George Tchobanoglous, John E. Colt, Robert G. Smith, Samuel A. Vigil

Civil and Environmental Engineering

Over the past 20 years , a variety of alternative, and in many cases innovative, technologies have been proposed for use in waste management systems. If alternative technologies are to be adopted they must, 1) be technologically feasible, 2) minimize the use of energy and resources, 3) maximize the recovery of the energy and nutrients contained in wastewater, 4) be cost-effective, and 5) not be unnecessarily disruptive of the existing order in their implementation. Although a number of the proposed technologies have met some or all of these requirements , few of them have been widely adopted. The principal reason …

Application Of Packed Bed Gasifiers To The Reduction Of Solid Wastes And The Recovery Of Energy, Samuel A. Vigil, George Tchobanoglous, Edward D. Schroeder

Civil and Environmental Engineering

No abstract provided.

The Economics Of Solar Water Heaters : A Guide For Evaluating The Cost-Effectiveness Of Active Solar Water Heating Systems In Maine, Maine Office Of Energy Resources

Maine Collection

The Economics of Solar Water Heaters : A Guide for Evaluating the Cost-Effectiveness of Active Solar Water Heating Systems in Maine

State of Maine, Executive Department, Office of Energy Resources,

Augusta, Maine (July, 1979).

Contents: Section I: Introduction / Section II: Economic Method: The Life Cycle Cost Analysis / Section III: Factors Affecting the Decision to Buy / Section IV: Explanation of the Tables / Table I - Table IIIA

Cost-Effectiveness Of Lane And Shoulder Widening Of Rural, Two-Lane Roads In Kentucky, Charles V. Zegeer, Jesse G. Mayes

Kentucky Transportation Center Research Report

The purpose of the study was to determine the cost-effectiveness of widening lanes and shoulders on rural, two-lane roads. Information concerning geometries, accidents, and traffic volumes was obtained for over 15,000 miles (25,000 km) of roads. Reductions in accident rates occurred as lane and shoulder widths increased. Run-off-road and opposite direction accidents were the primary accident types associated with narrow lanes and shoulders. Reductions in accidents ranged from 10 to 39 percent for lane widening and 6 to 21 percent for shoulder widening. Priority listings were prepared for 531 projects based on critical rate factor. Priority listings were also prepared …

Development Of Warrants For Left-Turn Lanes, Kenneth R. Agent

Kentucky Transportation Center Research Report

Warrants for the installation of separate left-turn lanes were developed. Literature was reviewed, and policies and practices in other states were surveyed. Accident analyses of locations with and without separate left-turn lanes were conducted. Computer simulation was used to determine the relationship between and among traffic delay and load factor and traffic volume, percent left-turns, cycle length, and cycle split. The relationship between left-turn accidents and conflicts was investigated.

Warrants were developed involving the following three general areas: (1) accident experience, (2) volumes (based on delay), and (3) traffic conflicts.

Statewide Survey Of Skid Resistances Of Pavements (1978), Rolands L. Rizenbergs, James L. Burchett

Kentucky Transportation Center Research Report

Statewide survey of skid resistances continued in 1978 with the testing of 2,943 miles (4,736 km) of state primary roads and 2,405 miles (3,870 km) of state secondary roads. About 10 percent of both the state primary mileage and the state secondary mileage had an average skid number of 28 or less. These pavements, in pariticular, should be considered for de-slicking.

In 1977 and 1978, 35 percent of the mileage of rural, state-maintained roads in Kentucky were surveyed. These roads carried 87 percent of all traffic on rural, state-maintained roads.

Delineation Of Stop-Sign Approaches, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objective of this study was to use new types of delineation at a stop approach to determine if drivers could be made more aware of the "Stop" situation ahead. The treatments involved post delineators, raised markers, and transverse striping placed at various spacings in advance of the "Stop" signs. Speeds were measured 200 feet (61 m) and 1,200 feet (366 m) in advance of the "Stop" sign. Brakelight distances were also recorded.

The various delineations provided significant reductions in speeds. Post delineators in combination with transverse stripes were the most effective. No significant difference was found between results obtained …

Careers In Air Pollution Control, Harold M. Cota

Civil and Environmental Engineering

No abstract provided.

Raised Pavement Markers At High-Hazard Locations, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

Even though a large number of potentially hazardous locations exist on rural, two-lane roads, guidelines have not been developed for use of raised pavement markers under night and during adverse weather conditions. The purpose of this study was to evaluate the use of raised markers at a sharp curve and narrow bridge in Kentucky. Visual observations, speed data, encroachment data, and accident data were used to evaluate the effectiveness of the markers.

Extensive visual observations of the sharp curve and narrow bridge in this study have provided data to support recommendations for improved delineation at similar sites on rural, two-lane …

Kentucky Culvert Study: An Engineering Review Of Policies And Practices Related To Procurement Of Culvert And Sewer Pipe, Byrd, Tallamy, Macdonald And Lewis

Kentucky Transportation Center Research Report

Objectives: This study was undertaken to provide the Kentucky Department of Transportation (KyDOT) with 1 ) information concerning the present state-of-the-art in the selection of culvert pipes with reference to the problem of drainage water from coal mines, shales and other excavations which may be highly acidic; and 2 ) recommendations on alternative materials and/or special treatments for pipes in areas of acid drain water.

Methodology: The study consisted of a review of the literature from selected highway agencies including Kentucky, a review of culvert pipe selection practices in other states and discussions with persons knowledgeable about pipe materials.

Findings: …

Road Rater And Benkelman Beam Pavement Deflections, Gary W. Sharpe, Herbert F. Southgate

Kentucky Transportation Center Research Report

The Benkelman beam has been one of the most commonly used methods of measuring surface deflections of a highway pavement. A Benkelman beam is based on a simple lever-arm principle and uses dial guages to measure surface deflection under an applied load. In 1971, the Commonwealth of Kentucky purchased a Road Rater for use by the Department of Transportation, Division of Research. The Road Rater applies a sinusoidal force to the pavement at a fixed frequency; surface wave velocities are measured and electronically integrated to obtain surface deflections, Since 1971, work has progressed toward the development of a pavement evaluation …

Irish H & V News

Building Services Engineering

No abstract provided.

The Use Of Natural Sorbents For The Treatment Of Industrial Sludge Leachate, Mung Shium Jack Sheih

Dissertations

A sorbent treatment process has been developed which uses natural clay soils and fly ashes as sorbents in the treatment of the hazardous contaminants of potential sludge leachate emanating from industrial landfills. Natural sorbents (i.e., vermiculite, illite, kaolinite, zeolite, acidic and basic fly ashes) were evaluated for the removal of specific cations, anions, and organics from leachates generated from three industrial sludges (i.e., calcium fluoride, metal finishing, and petroleum). The laboratory results indicate that, rather than a single sorbent, a combination of acidic and basic sorbents in a layered system is required to reduce for the measurable contaminants present in …

Problem Identification For Highway Safety Plan, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

To comply with Section 402, Title 23 of the United States Code, each state is required to prepare a annual highway safety program. Kentucky's program, which includes identification, programming, budgeting, and evaluation of highway safety projects, is intended to have a positive impact on the reduction of traffic accidents. The first step in the program, problem identification, requires systematic, statistical analyses of accident records. In-depth analyses of accident data were performed, and 25 problem areas were investigated. Accident rates were found for counties and cities in the following categories: total accidents, fatal accidents, accidents by driver age and sex, and …