Civil and Environmental Engineering Commons^™

Seismic Behavior Of Staggered Truss Framing Systems, University Of Michigan

CCFSS Library (1939 - present)

No abstract provided.

Loads On Box Culverts Under High Embankments, Harry F. Girdler

Kentucky Transportation Center Research Report

The structural design of culverts requires a reliable estimate of the earth pressures which will come to bear on the structure during and after construction of the embankment. The actual bearing pressure at a given time and under various conditions of differential settlement may be greater or less than the deadload of the fill or embankment over the structure. This report describes the instrumentation and construction of three box culverts designed by the imperfect trench method. A total of 42 Carlson earth pressure cells were installed in conjunction with strain gages and settlement measuring devices, including inverted settlement plates and …

Relationships Between Roadway Geometrics And Accidents (An Analysis Of Kentucky Records), Kenneth R. Agent

Kentucky Transportation Center Research Report

Statewide average and critical rates of accidents were determined from 1970-1972 Kentucky accident records for each type of rural highway. Four-lane undivided highways had the highest average accident rate; parkways (toll roads) had the lowest rate. The severity of accidents was related to types of accidents, highways, and traffic control and to safety belt usage. Accidents involving pedestrians were the most severe types; single-vehicle accidents ranked next highest in severity. Excluding accidents at railroad crossings, accidents which occurred on curves had the highest severity index. The use of safety belts was associated with reduced severity.

Vibratory Densification Of Granular Materials, Gurbux Rai Mehdiratta

Civil Engineering ETDs

The densification behavior of 13 different types of materials was investigated by subjecting each material to vertical simple harmonic motion using an electromagnetic vibrator. A total of more than 1000 maximum density tests were performed. The soil parameters investigated were angularity, uniformity coefficient, percentage of fines and specific gravity. The vibration parameters investigated were frequency, acceleration, displacement and time of vibration. To study the effect of angularity, four different types of materials ranging from angular to rounded were tested. The effect of uniformity coeffi­cient, percentage of fines and specific gravity was investigated by varying the uniformity coefficient from 2 to …

Raised Pavement Markers As A Traffic Control Measure At Lane Drops [No. 418], Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

Raised pavement markers are an effective means of reducing erratic movements at lane-drop locations, particularly under nighttime driving conditions. The cost of raised pavement markers and their installation is nominal (approximately $150 per lane-drop location). It is recommended that raised pavement markers be installed at other lane-drop locations. Markers installed at locations described in this study have not been in place for a sufficient time to determine their durability; however, reports from other states indicate their durability is sufficient to render them economical. If raised pavement markers are installed routinely, steps should be taken to insure they are not damaged …

Raised Pavement Markers As A Traffic Control Measure At Lane Drops [No. 384], Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

Raised pavement markers are an effective means of reducing erratic movements at lane-drop locations, particularly under nighttime driving conditions. The cost of raised pavement markers and their installation is nominal ($150 per location). It is recommended that raised pavement markers be installed at other lane-drop locations. Markers installed at locations described in this study have not been in place for a sufficient time to determine their durability; however, reports from other states indicate their durability is sufficient to render them economical. If raised pavement markers are installed routinely, steps should be taken to insure they are not damaged by snowplow …

Optimization Of Single- And Double-Flash Cycles And Space Heating Systems In Geothermal Engineering, Talal Hussein Hassoun

Dissertations and Theses

Two different problems of optimization in the utilization of geothermal energy are presented: First, the thermodynamic optimization for a geothermal power plant using a single- or double-flash process is considered; in this analysis, the optimum flash temperature giving the maximum power output is determined. Second, an economic optimization for space heating systems using geothermal energy is developed to obtain operating conditions for which the total (capital and operating) cost is a minimum.

Both graphical and analytical methods are used in the thermodynamic optimization to determine the optimum flash temperature. The graphical method is based on thermodynamic data provided by an …

Column Research Council: Proceedings 1974, Column Research Council

CCFSS Library (1939 - present)

One of the purposes of the Council is to maintain a forum where problems related to the design and behavior of columns and other compression elements in metal structures can be presented for evaluation and discussion. The Annual Technical Session provides opportunity to carry out this function.Summaries of the technical papers, the panel discussion, and minutes of the business meeting are recorded in the following pages. The attendance list is also included.

Automation Of The Continuous Coagulation Monitor, Dee Mitchell, James J. Oskowis

Arkansas Water Resources Center Technical Reports

The development of automation in the past 50 years has paralleled the accelerating growth of today’s vast technological society. Automatic control systems are indispensable extensions of man's brain that enable him to monitor and regulate his complex environment. The principles of automatic control have a wide range of applications and interests in virtually every scientific field. The need for automatic control systems in vital applications of environmental engineering is both real and urgent. Extensive pollution has resulted in unavoidable water re-use and in the inevitable establishment of stringent effluent standards. Both water and wastewater treatment processes have necessarily become more …

Ole Miss Engineer 1974

Ole Miss Engineer

No abstract provided.

Ua66/1/2 Scrapbook, Wku Ogden College Of Science & Engineering

WKU Administration Documents

Scrapbook of clippings, press releases, photographs and other items related to the history of Ogden College of Science & Technology from 1961 to 1974.

Evaluating The Membrane Fecal Coliform Test By Using Escherichia Coli As The Indicator Organism, James B. Hufham

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The fecal coliform membrane filter method (MFC) currently used in water pollution analysis was evaluated by using two strains of E. coli, a known fecal coliform, as th indicator organism. A large relative error in the results obtained with this method was found to be dependent upon the brand of membrane filter employed, the medium, and the temperature of incubation. MFC densities varied between 10 and 60% of the densities determined by means of total bacteria counts and total coliform counts performed at 35°C. Due to the large relative error encountered, the MFC method cannot be recommended as an analytical …

Bulletin No 3887 - Cattle Yard Construction, Western Australian Department Of Agriculture

Bulletins - 3000 - 3999

Good cattle yards allow animals to be handled quietly, safely and efficiently. If yards are well designed, animal uneasiness is minimised and so, too, are frayed tempers.

This bulletin outlines general points of cattle yard design and construction. There are many and varied cattle yard designs in use—many good ones and some bad ones. This bulletin should help in avoiding the bad ones.

Porous Sand-Asphalt Mixtures, James H. Havens

Kentucky Transportation Center Research Report

Size is relative. Densely graded sand-asphalts are relatively similar to conventional, bituminous concretes. Porous sand-asphalts possess the same attributes as other porous, bituminous mixtures. Surely, sand-asphalt mixtures, can be designed to be as porous as the so-called, open-graded plantmix seals. Particle shape and texture otherwise define skid-resistance. Stability remains an assurance against scaling. Stability is assured by maximum utilization of filler-bitumen ratio and the stiffness of asphalt cement.

Water Resources Planning, Social Goals, And Indicators: Methodological Development And Empirical Test, Henry P. Caulfield

Reports

A methodology for comprehensive evaluation of water resources development and use (Techcom) has been developed and partially field tested. A model of societal goals consists of nine primary goals successively articualted into increasingly specific subgoals. Achievement of subgoals is perceived as affected by measurable social indicators whose values are perturbed by water resources actions. Linking the elements of the goals taxon by connectives result in an evaluation system. historical, political and philosophical considerations of the proposed system are discussed in Part I. Part II describes the results of the Rio Grande of New Mexico test including public perception and weighting …

Slope Stability Of Overburden Spoil Dumps From Surface Phosphate Mines In Southeastern Idaho, Roland W. Jeppson, Robert W. Hill, C. Earl Israelsen

Reports

No abstract provided.

Recommendations For Implementation Of Uniform Project Identification From The Upi Task Force, Herbert F. Southgate

Kentucky Transportation Center Research Report

For years project identifications have been based upon county, section, subsection, and phase of work. While this system worked well in the beginning, overlay constructions, widening efforts, etc. have caused overlapping of projects to the point that identification of a given portion of a highway has become very difficult. Furthermore, each of the many separate phases of work has its own project number and may not be so readily identifiable as the succeeding work phase.

Management came to realize there was a need for a numbering identification system that would be readily understandable. The direct result was the development of …

Characterization And Pollutional Contribution Of Stormwater Runoff From A Small Urban Area., John Lamb Wendleton

Masters Theses

"Stormwater runoff from urban areas has long been recognized as a pollutional source, however, only in the last decade has there been an extensive eff ort to measure its effect on receiving lakes and streams. Because runoff from small urban communities has received limited attention, this investigation was undertaken to determine the quality and pollutional contribution of stormwater runoff from a small urban area. The specific objectives of the study were: to characterize and correlate runoff quality with land use activity and to qualitatively and quantitatively measure the pollutants discharged with respect to time.

Runoff from 3 test watersheds in …

A Multiple-Plan Evaluation Model For Small Ungauged Watersheds, James R. Dexter

Masters Theses

A computer solution model is proposed for simulation of the effect of alternative measures for flood damage reduction. The goal of the model is to optimize the value of an objective function which will maximize the amount of net benefits returned by the project. The evaluation includes unit hydrograph synthesis, direct runoff construction, computation of average annual damages, and optimization of an objective function. A test application of the model is made on a small community affected by floods from a small ungauged stream"--Abstract, page iii.

Analysis Of Driver Reaction To Warning Devices At A High-Accident Rural Grade Crossing, Eugene Robert Russell

JTRP Technical Reports

No abstract provided.

Evaluative Study Of A Proposed Municipal Pyrolysis Installation, Leon Breckenridge

All Master's Theses

This paper discusses an alternative to sanitary landfills as a method of disposing of municipal solid waste. The alternative means is a pyrolysis-gasification process for the disposal of solid wastes and the production of energy in the form of a gas of relatively low energy content.

Characteristics of typical municipal solid wastes are discussed. A discussion of the pyrolysis process is included along with other pertinent technical information. A method for utilization of the energy produced from pyrolysis is presented.

Relative Performance Of Two Activated Carbons In Treating Pharmaceutical Waste., K. A. Narasimhan

Masters Theses

"This work examined the feasibility of the carbon adsorption system to treat a high organic strength waste (having a COD of 8,100 mg/£) from a pharmaceutical plant, and also compared the relative treatment efficiencies of two different kinds of carbon~ Calgon Filtrasorb 400 and Darco S-51, both having the same size ranges.

The overall treatment scheme employed consisted of chemical clarification and activated carbon adsorption. Jar tests were conducted to select a proper type of coagulant and determine an optimum dosage. Batch and column adsorption studies were conducted using both carbons.

Alum was found to be a better coagulant than …

Local Buckling Of Cold-Formed Steel Structural Members Having Initially Curved Compression Elements, William M. Mckinney

Masters Theses

"A comprehensive investigation of the effect of initial deviation from flatness on buckling stress and post-buckling strength of compression elements in structural plate members is presented. The study of stiffened and unstiffened elements expands the scope of elastic stability for initially curved plates. Finite element techniques were utilized for the study of unstiffened elements"--Abstract, page ii.

A Planning Study On The Electrical Load Requirement For The New Town Of Pattonsburg, Javad Yousefian

Masters Theses

"Because of an Army Corps of Engineer proposed new dam on the Grand River 1 the original town of Pattonsburg, Missouri was to be inundated by the resulting lake reservoir formed above the dam. The city planners proposed the relocation of the town site adjacent to the new lake, forming a lake side community attractive to both a residential population and for industrial locations.

The electrical power loads of New Pattonsburg's residential, industrial, commercial, and municipal areas, as well as its street lighting power requirements, were planned for a population of 50,000. Statistical analysis of demographic surveys was employed to …

Distribution Of Ambient Particulates And Particulate Trace Metals Around The Amax Smelter, Pramod Maneklal Shah

Masters Theses

"The purpose of this investigation was to study the distribution of metallic particulates in the air surrounding the AMAX Lead Company of Missouri smelter in the "New Lead Belt" of southeast Missouri. The study included the evaluation of the temporal and spatial variation of dustfall and deposition rates of settleable particulate lead, zinc, copper, and cadmium, and transport and distribution of total suspended particulates and suspended particulate trace metals.

The study was conducted within a 3 x 3-mile grid around the smelter employing twenty dustfall stations and five HiVolurne samplers. The samples collected were analyzed for lead, zinc, copper and …

Laboratory Evaluation Of Dynamic Soil Properties By Ultrasonic Testing Methods, Ronald Maurice Eckelkamp

Masters Theses

"Measurement of ultrasonic compression and shear wave velocities through a soil material has been made with a pulse wave generator developed at the University of Missouri-Rolla. The variation of these velocities along with the behavior of the dynamic material parameters of the material (Young's modulus, shear modulus, Poisson's ratio) with void ratio and degree of saturation were determined. Compression wave velocity, shear wave velocity, Young's modulus and shear modulus were found to decrease with increasing void ratio; degree of saturation was of little influence. Wave attenuation could not be measured by the test procedure used"--Abstract, page ii.

The Gyratory Testing Machine As A Design Tool And As An Instrument For Bituminous Mixture Evaluation : Draft Copy, Arun Kumar, William Harner Goetz

JTRP Technical Reports

No abstract provided.

Wrong-Way Movements On Divided Highways, Peter N. Scifres

JTRP Technical Reports

No abstract provided.

Engineering Soils Map Of Delaware County, Indiana, D. G. Shurig

JTRP Technical Reports

No abstract provided.

Effects Of Bicycle Lanes On Traffic Flow, Robert J. Jilla

JTRP Technical Reports

No abstract provided.