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Articles 36631 - 36660 of 39901

Full-Text Articles in Civil and Environmental Engineering

A Study Of Geologic Hazards And Geotechnical Input For Selected Critical Facilities - Cache Valley, Utah, Kenneth Robert Green May 1977

A Study Of Geologic Hazards And Geotechnical Input For Selected Critical Facilities - Cache Valley, Utah, Kenneth Robert Green

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Important public facilities located in Cache Valley, Utah, were studied to assess their exposure to geologic hazards. Also, the level of geotechnical and geologic expertise involved in the siting, design, and construction of critical public facilities was studied. A discussion of several individual facilities, that were exposed to some degree of hazard, was presented to illustrate the nature of the problem.

Earthquake hazards probably constitute the greatest threat to facilities and to the general welfare of the public. Many earthquake hazard mitigation measures were discussed and recommendations were made, based on aseismic design criteria which has been developed for seismically …


Salt Production From Micro-Channels In The Price River Basin, Utah, Richard Bruce White May 1977

Salt Production From Micro-Channels In The Price River Basin, Utah, Richard Bruce White

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Salt production from micro-channels in the Price River basin of east-central Utah was studied using artificial inputs in order to better define the general sources and processes involved in diffuse source salt release within the basin. An attempt was made to determine what factors are most significant in relation to salt release. The study revealed that the micro-channel systems are highly heterogeneous in relation to salinity. This natural variability tends to increase as the salt content of the channel increases.

The Bluegate member of the Mancos shale was found to be the prime source of salt within the basin. Gypsum …


The Effects Of Pressure On The Biodegradability Of Sanitary Sewage In A Model Activated Sludge Reactor, Nicholas A. Mezei Apr 1977

The Effects Of Pressure On The Biodegradability Of Sanitary Sewage In A Model Activated Sludge Reactor, Nicholas A. Mezei

Theses

Based on existing information concerning the effects of pressure on the biodegradability of sanitary sewage, a model activated sludge reactor was used in conjunction with pressurization to determine the viability of pressurization as a primary sewage treatment process.

Municipal sewage samples were pressurized at 40 psig for one hour with an excess of oxygen. An air compressor and a steel drum were used for sample pressurization. A non-pressurized control sample was maintained. After pressurization, the samples were fed into separate model activated sludge reactors. Biodegradability of both types of effluent was measured by determining their five day biochemical oxygen demands …


Ua64/3 Readout, Wku Industrial Education & Technology Apr 1977

Ua64/3 Readout, Wku Industrial Education & Technology

WKU Administration Documents

Newsletter includes articles:

  • Renovation of Industrial Education Building Nearing Completion
  • Tomazic, Norman. Basic Industrial Education: Futures Oriented "Sabre-toothed" Curriculum?
  • Conley, Franklin. Comments re: departmental news
  • New Electricity / Electronics Facilities
  • WKU Student Receives KIEA Scholarship, Bonnie Thomerson
  • Zax, Carol. Communication & Interaction
  • Pittman, Frank. Guitars, Guitars, Guitars re: Hascal Haile
  • IE&T One-Liners
  • Walter Nalbach Scholarship Fund


Ole Miss Engineer 1977 Apr 1977

Ole Miss Engineer 1977

Ole Miss Engineer

No abstract provided.


Some Uncertainties Of Slope Stability Analyses, Robert C. Deen, Tommy C. Hopkins, David L. Allen Apr 1977

Some Uncertainties Of Slope Stability Analyses, Robert C. Deen, Tommy C. Hopkins, David L. Allen

Kentucky Transportation Center Research Report

Some practical limitations of total stress and effective stress analyses are discussed. For clays having a liquidity index of 0.36 or greater, φ-equal-zero analyses based on laboratory undrained shear strengths give factors of safety close to the actual factor of safety. However, based on field vane strengths, φ-equal-zero analyses may yield factors of safety which may be too high. The difference between field vane and calculated shear strengths increased as the plasticity index increased. For clays having a liquidity index less than 0.36, φ-equal-zero analyses using laboratory undrained shear strengths give factors of safety that are much too high; but …


Acoustic Emission Testing Of High-Strength Steel Weldments, Theodore Hopwood Ii Apr 1977

Acoustic Emission Testing Of High-Strength Steel Weldments, Theodore Hopwood Ii

Kentucky Transportation Center Research Report

Manual arc welds were made on high-strength ASTM A 514 and A 588 steels. Different weldment configurations were employed in order to vary the restraint on the welds during cooling. The weldments were monitored 'in-cooling' with acoustic emission equipment. Weldments having greater restraint produced more acoustic emission, usually for longer periods of time. Weldments which fractured during cooling produced more acoustic emission than those which were unflawed.


Suspended And Dissolved Solids Effects On Freshwater Biota: A Review, Darwin L. Sorensen, Margaret M. Mccarthy, E. Joe Middlebrooks, Donald B. Porcella Apr 1977

Suspended And Dissolved Solids Effects On Freshwater Biota: A Review, Darwin L. Sorensen, Margaret M. Mccarthy, E. Joe Middlebrooks, Donald B. Porcella

Reports

It is widely recognized that suspended and dissolved solids in lakes, rivers, streams, and reservoirs affect water quality. In this report the research needs appropriate to setting freshwater quality criteria or standards for suspeneded solids (not including bedload) and dissolveed solids are defined by determining the state of our knowledge from a critical review of the recent literature in this field. Common literature sources and computer searching routines were used as an initial source of information followed by detailed journal searches. Although some 185 journal articles, government reports, and other referecnes were cited herein (about 45 percent publicshed since 1974) …


Fundamental Analysis Of The Linear Multiple Regression Technique For Quantification Of Water Quality Parameters From Remote Sensing Data, Charles Henry Whitlock Iii Apr 1977

Fundamental Analysis Of The Linear Multiple Regression Technique For Quantification Of Water Quality Parameters From Remote Sensing Data, Charles Henry Whitlock Iii

Civil & Environmental Engineering Theses & Dissertations

Inconsistent results have been obtained from previous experiments which have applied linear multiple regression techniques to remote sensing data for quantification of water quality parameters. The objective of this investigation is to define optical physics and/or environmental conditions under which the linear multiple regression should be applicable. To achieve this objective, an investigation of the signal response equations is conducted and the concept is tested by application to both analytical test cases and actual remote sensing data from a laboratory under controlled conditions.

Investigation of the signed response equations shows that the exact solution for a number of optical physics …


A Model To Investigate The Influence Of Suspended Sediment On The Mass Transport Of A Pollutant In Open Channel Flow, Raymond Scott Chapman Apr 1977

A Model To Investigate The Influence Of Suspended Sediment On The Mass Transport Of A Pollutant In Open Channel Flow, Raymond Scott Chapman

Civil & Environmental Engineering Theses & Dissertations

The environmental impact of the transport of pollutants in open channel flow has for many years been of interest due to the continuous introduction of heavy metals, pesticides, herbicides, and other foreign substances into natural waterways. In order to fully understand this transport process, it-is necessary to examine the significance of its individual components. In the present study an explicit two-dimensional finite difference model, designed to investigate the influence of suspended sediment on the pollutant transport process, is presented. Specific attention is directed toward examining the role of suspended sediment in 1) the turbulent vertical transport mechanism in a stratified …


Computerized Analysis Of Stress-Strain Consolidation Data, E. Gregory Mcnulty Mar 1977

Computerized Analysis Of Stress-Strain Consolidation Data, E. Gregory Mcnulty

Kentucky Transportation Center Research Report

A computerized, mathematical algorithm is described and presented for analyzing the semilogarithmic stress-strain (time-independent) properties of standard, controlled-gradient, and controlled-rate-of-strain consolidation tests. This algorithm is an automation of manual graphical procedures currently used in engineering practice to obtain stress-strain information necessary for use in time-independent settlement analysis. The Casagrande and Schmertmann constructions are analytically represented to determine the preconsolidation stress and the in situ, compressibility coefficients of compression and expansion. Values for each of these parameters range between a probable and minimum value. The point of maximum curvature is determined for the Casagrande construction by use of the mathematical definition …


Ole Miss Engineer 1977 Feb 1977

Ole Miss Engineer 1977

Ole Miss Engineer

No abstract provided.


Identification Of Hazardous Locations On City Streets, Charles V. Zegeer, Robert C. Deen Feb 1977

Identification Of Hazardous Locations On City Streets, Charles V. Zegeer, Robert C. Deen

Kentucky Transportation Center Research Report

The purpose of this study was to develop an effective method for identifying hazardous locations in Kentucky cities (over 2,500 population). Methods used in 45 other states were reviewed. Accident information for 69 of the 97 cities over 2,500 population was used to develop criteria for an identification method.

A Number Method was selected for initial identification of midblocks and intersections on arterial-collector streets and on urban freeways. A Rate-Quality Control Method was included in the form of a critical rate factor computed for each location. A set of critical rate curves was constructed for easy determination of hazardous locations. …


Voidless And Internally Sealed Concretes (Construction Report; Silas Creek Bridge, Us 27, Mp-009-0027-B0002), Assaf S. Rahal Feb 1977

Voidless And Internally Sealed Concretes (Construction Report; Silas Creek Bridge, Us 27, Mp-009-0027-B0002), Assaf S. Rahal

Kentucky Transportation Center Research Report

Laboratory investigations on concretes containing super water reducers, PVP and Melment, indicated their suitability for field utilization. Wax beads have been used by other states in concretes for bridge slabs. This report describes the reconstruction of a four-span bridge having three experimental slabs and one conventional slab. Post-construction analyses of cores are included.


Agricultural Crop Drying And Space Heating Using A Solar Energy Intensifier, M. A. Hellickson, W. H. Peterson, S. E. Saienga, J. L. Julson Jan 1977

Agricultural Crop Drying And Space Heating Using A Solar Energy Intensifier, M. A. Hellickson, W. H. Peterson, S. E. Saienga, J. L. Julson

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

A solar energy-intensifier-thermal energy storage system was developed and tested under actual climatic conditions in South Dakota. Performance characteristics of the system are presented for its use in drying shelled corn and for agricultural space heating. Comparisons between solar and conventional drying between solar supplemented and conventional heating are reported.


Steel Roof Deck Design Manual, Steel Deck Institute Jan 1977

Steel Roof Deck Design Manual, Steel Deck Institute

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

No abstract provided.


Poultry Breeds Must Be Conserved : An Ideal Small Unit, R H. Morris Jan 1977

Poultry Breeds Must Be Conserved : An Ideal Small Unit, R H. Morris

Journal of the Department of Agriculture, Western Australia, Series 4

The Department of Agriculture is concerned at the rapid disapearance of some poultry breeds and strains over recent years. This trend has resulted from the disposal of flocks previously held by commercial poultry breeders and fanciers.

One way to stop the trend of disappearance of poultry breeds is for interested people to maintain a breeding flock of pure-bred poultry, making the progeny available to others.

This article describes a small unit suitable for housing breeding fowls. The unit is based on designs developed by the Department of Agriculture.


Missouri River, South Dakota, Nebraska, North Dakota, Montana Review Report For Water Resources Development, Volume 1 Of 3 Jan 1977

Missouri River, South Dakota, Nebraska, North Dakota, Montana Review Report For Water Resources Development, Volume 1 Of 3

United States Army Corps of Engineers, Omaha District

This study investigated a wide range of water resource problems and opportunities related to the Missouri River and the six main stem dams along an area extending over 1.500 miles from Sioux City. Iowa to Three Forks. Montana. Subjects of the study were: the feasibility of installing additional hydro-power generating units both at the main stem dams and adjacent to the river; resolution of bank erosion, waterlogging, and residual flood problems; opportunities for recreation, fish and wildlife enhancement; operating plans of the main stem system considering future water use; and potential for extending navigation upstream from Sioux City. Iowa.

Several …


Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method: Volume Iii. Appendix A, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde Jan 1977

Runoff Estimates For Small Rural Watersheds And Development Of A Sound Design Method: Volume Iii. Appendix A, Joel E. Fletcher, A. Leon Huber, Frank W. Haws, Calvin G. Clyde

Reports

Foreword: This report is composed of thee volumes; Volume I is the Research Report; Volume II consists of recommendations for establishing design manuals and Appendices B, C, D, E, F, G, and H, which are the design aids required for establishing design manuals; Volume III consists of Appendix A, and accumulation of the data base used in the study, FHWA chose to arrange the report as described to facilitate distribution of the results. The methods reported herein are designated as the Federal Highway Administration Methods are designed to be applied to watersheds smaller than 50 square miles but may be …


Stiffness Of Solid-Liquid Mixtures: Theoretical Considerations, David L. Allen Jan 1977

Stiffness Of Solid-Liquid Mixtures: Theoretical Considerations, David L. Allen

Kentucky Transportation Center Research Report

A rational approach to the solution of the stiffness of solid-liquid mixtures is presented. The stiffness of such mixtures is dependent on the stiffness of the viscous medium and the volume concentration and elastic modulus of the solid portion. Finally, the general solution is applied, in particular, to bitumen-aggregate mixtures; and the results are compared to experimental data.


Surface Dynamics Profilometer And Quarter-Car Simulator: Description, Evaluation, And Adaptation, James L. Burchett, Rolands L. Rizenbergs, Thomas A. Moore Jan 1977

Surface Dynamics Profilometer And Quarter-Car Simulator: Description, Evaluation, And Adaptation, James L. Burchett, Rolands L. Rizenbergs, Thomas A. Moore

Kentucky Transportation Center Research Report

A Surface Dynamics Profilometer was acquired in December 1968. The SD Profilometer was designed to rapidly and accurately measure the profile of the surface over which it is driven. A Quarter-Car Simulator was obtained in 1970. The simulator, a special purpose analog computer, was designed to process road profiles measured with the SD Profilometer. This processing involves analog simulation of a simplified vehicle. Factors and variables associated with the devices and calibration and test procedures were investigated and standardized. The Automatic Roughness-Measuring System using an automobile (Kentucky interim standard method of test for roughness) was correlated with the SD Profllometer …


Dynamic Pullout Resistance Of Anchors Buried In Dry Sand, Chris John Veesaert Jan 1977

Dynamic Pullout Resistance Of Anchors Buried In Dry Sand, Chris John Veesaert

Masters Theses

"The vertical pullout resistance of buried anchors subjected to dynamic loading was investigated by means of a laboratory model study. A dry uniformly graded sand, compacted by vibration to 92% of its relative density, was used as the test medium. Tests were performed in a 24-inch square tank using 3.0 and 5.0-inch diameter half and full-anchors. The anchors were tested at depths ranging from 5.0 to 21.0 inches.

It was assumed that the dynamic failure mechanism of earth anchors was the same as the static failure mode, and not distinct behavior. Thus static tests, i.e., tests using a constant strain …


Removal Of Organic Chemical Contaminants By Granular Activated Carbon., Garry Reinhold Aronberg Jan 1977

Removal Of Organic Chemical Contaminants By Granular Activated Carbon., Garry Reinhold Aronberg

Masters Theses

"The purpose of this investigation was to evaluate the effectiveness of GAC* filtration in removing organic chemical contaminants from drinking water, and to determine whether the T.O. No. of the treated water could aid in the routine monitoring of the GAC filters.

Two pilot filters containing 18-in. (45.7-cm) deep GAC beds were installed at water treatment plants in Jefferson City and St. Louis County, MO; both plants treated Missouri River water. A bituminous coal-base (large surface area, small pore volume) and 2 lignite coal-base (small surface area, large pore volume) carbons were tested at 2 and 5 gpm/sq ft (81.4 …


Traffic Speed Report No. 102 : Interim Report, James Robert Mekemson, George K. Stafford Jan 1977

Traffic Speed Report No. 102 : Interim Report, James Robert Mekemson, George K. Stafford

JTRP Technical Reports

No abstract provided.


Correlation Of Design And Control Characteristics With Accidents At Rural Multi-Lane Highway Intersections In Indiana : Interim Report, Maren Peter Van Jan 1977

Correlation Of Design And Control Characteristics With Accidents At Rural Multi-Lane Highway Intersections In Indiana : Interim Report, Maren Peter Van

JTRP Technical Reports

No abstract provided.


Design Standards For Farm Surface Water Supplies, J L. Frith Jan 1977

Design Standards For Farm Surface Water Supplies, J L. Frith

Journal of the Department of Agriculture, Western Australia, Series 4

Design is usually concerned with getting adequate return from limited recources. Farm dams which dry up represent dam failure. Less seriously, so too do dams which, although not drying out, never fill; they waste a recource.


Thermal Response Of A Composite Bridge Structure, David John Wisch Jan 1977

Thermal Response Of A Composite Bridge Structure, David John Wisch

Masters Theses

"This experimental investigation was conducted as an intermediate study to verify and substantiate a prior theoretical study for possible utilization toward development of rational bridge design criteria. The objectives of the study were to construct and instrument a 15 ft - 15 ft (4.6 m- 4.6 m) two-span, composite design, laboratory structure, to subject the structure to thermal loading, and to correlate the experimental temperature distributions, strain distributions, and deflections with those obtained from the theoretical study. Infrared heat lamps were used to obtain steady-state thermal loading.

Three theoretical cases were considered for strain calculations: a) both the slab and …


Superior Bluegrasses For Roadside Turf : Interim Report, William Hugh Daniel, Harold L. Michael Jan 1977

Superior Bluegrasses For Roadside Turf : Interim Report, William Hugh Daniel, Harold L. Michael

JTRP Technical Reports

No abstract provided.


Traffic Speed Report No. 99 : Interim Report, Graham S. Toft, George K. Stafford Jan 1977

Traffic Speed Report No. 99 : Interim Report, Graham S. Toft, George K. Stafford

JTRP Technical Reports

No abstract provided.


Traffic Speed Report No. 100 : Interim Report, Graham S. Toft, George K. Stafford Jan 1977

Traffic Speed Report No. 100 : Interim Report, Graham S. Toft, George K. Stafford

JTRP Technical Reports

No abstract provided.