Civil and Environmental Engineering Commons^™

Replication Of Eye-Bars And Measurement Of Losses In Cross Section Due To Corrosion, Assaf S. Rahal, J. R. Philpot

Kentucky Transportation Center Research Report

Recent availability of high pressure water blasters made it possible to remove rust accumulated between the eye-bars near pin connections on the Central Bridge (Figure 1) over the Ohio River at Newport. Previously, they had never been thoroughly cleaned. Cleaning of two connections on a trial basis enabled an inspection between the bars. It was apparent then that the deterioration was critical enough to necessitate examination of the several bar groups and to accurately measure their least cross sections.

The Research Division undertook the task of replicating and measuring the bars. Figures 2 and 3 show one set of bars …

A Study Of Elasto-Viscous Material Under Moving Rigid Wheel, Sou-Nan Wang

Civil & Environmental Engineering Theses & Dissertations

This thesis is considered as the solution of interaction between aircraft wheel and soil under landing of airplane. After treating soil as elasto-viscous material, we get a set of non-linear differential equations, such as momentum equations, in viscous region.

A numerical method, Marker-and·-Cell (MAC) method, was used to solve these equations. All data and curves are obtained by using CDC 6600 computer.

An Experimental Study Of Lateral Soil Pressures And Moments On Flexible Sheet Piles, James H. Donahue

Civil & Environmental Engineering Theses & Dissertations

In order to study the effect compaction has on lateral earth pressures exerted on and bending moments in steel sheet pile bulkheads, an experimental study was undertaken which employed the placement of a non-cohesive soil at two specific densities against three model piles of varying thicknesses. The soil was placed both in a loose and a dense state and the bending strains and deflections of the sheet piles were measured at various stages of backfill. Surface loadings were then placed after completion of the backfilling to observe the effects these loads had on the bending moments. The results of the …

Grain Size Reconnaissance Of The Virginia-North Carolina Inner Shelf Analysis By Settling Technique, Robert Bailey Sanford Jr.

OES Theses and Dissertations

The 2-fold purpose of this study is to calibrate a Rapid Sediment Analyzer and to use it to aid in the determination of the genesis of sediment on the inner continental shelf between Cape Henry and Cape Hatteras. Rapid Sediment Analyzer calibration was conducted by comparison of sieving and settling results of similar sands.

The study area was divided into sediment provinces by both a qualitative procedure (grain size and topography) and a quantitatively procedure (factor-vector analysis). Qualitative provinces are beach and surf, upper shore face, lower shore face, sea floor, and terminal shoals. The berm fines from each terminal …

Runoff And Sediment Studies For San Pedro Creek, Sandoval, Bernalillo, And Santa Fe Counties, New Mexico, Elvidio Olavo Vidalito Bernado Diniz

Civil Engineering ETDs

The San Pedro Creek basin has a drainage area of 195 square miles stretching from the eastern slopes of the Sandia Mountains to the Rio Grande in the northwest. The lower elevations in the basin have a typical semiarid climate, but the higher elevations are more humid. The basin is disected by dendritic patterned drainage systems; approximately twenty-two of these systems compose the basin. The area is a woodland with juniper, pinon, and grasses prevalent. The geology of the area is very complex numerous faults occur within the basin, and three major faults border it. The soils in the basin, …

The Dynamic Pressure Distribution And Rigid Body Response Of A Small Buried Dome Subjected To An Airblast-Induced Loading., Richard Cramond

Civil Engineering ETDs

A 9 inch in diameter rigid hemispherical dome was buried in the bottomless soil bins of a vertical shock tube. The interior diameter of the soil bins was 22-3/4 inches, with the interior wall being covered with a friction reducing membrane. An airblast was generated so as to strike the soil perpendicular to the soil surface. The peak reflected pressure of this airblast averaged 315 psi throughout the fourteen tests with the dome. Instrumentation measured the air pressures at the soil surface, the free-field soil stress above and below the dome, the radial on-structure stress on the dome, the rigid …

Electronic Analog Computer Hydrologic Simulation Of The Upper Bear River Basin, Mohammed A. Basha

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

OF the total precipitation falling on watersheds throughout the world, an average of approximately 85 percent returns directly to the atmosphere through evaporation and use by mountain vegetation. The remaining 15 percent moves from the watersheds as runoff and becomes available in the valleys to be used by man for irrigation, industry, recreation, and many other requirements in recent years has led to an increasing need for efficient management of available water resources, and in this regard computer modeling or simulation has proved to be a powerful tool.

The study described herein involves simulation of the hydrologic system of the …

Irrigation Water Management Potential In The Bear River Delta, Tom Al Austin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purposes of this study were to evaluate the present irrigation efficiencies of the Bear River delta area of northern Utah and to propose a set of management proposals to improve the irrigation efficiency. In order to evaluate the present use, all pertinent data on the water resources of the Bear River delta had to be assembled and analyzed.

A hydrologic budget is a method used to account for all inflows, outflows, and changes in storage within a given area. In this study, all inflows and changes in storage were evaluated and the outflow was predicted. In this manner the …

Median Design And Accident Histories, Gordon R. Garner

Kentucky Transportation Center Research Report

The purpose of this study was to provide information concerning the accident histories of various median types to verify minimum requirements for width and cross section. Previous accident studies failed to disclose significant relationships between median width and accident rates. Those studies did not recognize or control several important variables that were controlled in the present study. The efforts here are to compare median types on rural, four-lane, fully controlled access facilities with similar geometries other than median types. An attempt was made to account for some of the Variability in the accident data. Thus, this study gives information on …

Legal Aspects And Guidelines Pertaining To Drainage Of Surface Waters, D. W. Mclellan Jr., Victor Fox

Kentucky Transportation Center Research Report

A previous study ("Research Relating to State Highway Laws", reported January 1967) afforded us an opportunity to review a vast array of literature and statutory law pertaining to enabling legislation and administrative authority to construct and maintain highways. It was surprising to find that the statutes are void of guidance on certain subjects: there are great "bodies" of unwritten or non-statutory laws which are referred to as "common law" and "civil law", which are deeply rooted in the past; many are doctrinal or equitable; many are extraordinary and argumentative -- they should not be confused with Civil Procedure. They have …

Ole Miss Engineer 1970

Ole Miss Engineer

No abstract provided.

Pavement Slipperiness Studies, James L. Burchett Jr., Ronalds L. Rizenbergs

Kentucky Transportation Center Research Report

Studies of pavement skid resistance in Kentucky have been in progress since 1956. In 1964, an extensive investigation into the use of an automobile as a testing tool was undertaken and an interim standard method of test was selected. Since then, investigations with the device have continued, both to facilitate meaningful interpretation of skid-test data and to evaluate the skid resistance performance of pavement surfaces.

Variables associated with the testing device, procedures and pavement surfaces were investigated. Several paving projects were tested to determine the number of sites required to obtain a representative result. It was found that on most …

Closed Conduit To Open Channel Usu Stilling Basin, Gordon H. Flammer, Gaylord V. Skogerboe, Chi-Yuan Wei, Hameed Rasheed

Reports

Criterion have been developed for designing a stilling basin to serve as a transition from closed conduit flow to open channel flow for a fully submerged pipe outlet. The unique feature of the stilling basin is the short-pipe energy dissipater so located and designed as to provide maximum energy dissipation for the basin configuration. The expanding characteristics of a submerged jet were used in establishing the length of the stilling basin. The unsteadiness of the water surface and the relative boil height in the model basin were used as the criteria for evaluating the effectiveness of the structure for energy …

Hydrologic Inventory Of The Uintah Study Unit, Lloyd H. Austin, Gaylord V. Skogerboe

Reports

The 1963 Utah State Legislature authorized the Utah Water and Power Board (now the Utah Division of Water Resources) to develop a state water plan in order to give coordination and direction to the activities of all state and federal agencies concerned with Utah's water resources. To facilitate the development of this plan, a proposal was submitted through the State Planning Coordinator in the Governor's Office to the Urban Renewal Administration of the Housing and Home Finance Agency. Funding was approved effective May 19, 1966, under the Urban Planning Assistance Program authorized by Section 701 of the Housing Act of …

Interior Corrosion Of Structural Steel Closed Sections, American Iron And Steel Institute

CCFSS Library (1939 - present)

A survey of light poles, water-tank stanchions, orthotropic deck bridges, marine tubular catwalks, davits and welded steel columns strongly suggests, contrary to some beliefs, that interior surfaces of closed steel sections rust but little in the atmosphere, even when not fully sealed. Only light rusting occurs because amounts of oxy'gen and water in entrapped air are limited and condensation necessary for rusting is infrequent. Computations based on the oxidation reaction taking into account inside surface, volume of entrapped air, relative humidity and air changes show that the loss of iron thickness due to such rusting is negligible. Use of closed …

Freeze-And-Thaw Phenomena In Concretes And Aggregates, James H. Havens

Kentucky Transportation Center Research Report

This report summarizes several years of research relating to damage to concrete and aggregates undergoing freezing and thawing. Basic principles involving freezing and attendant pressures are considered. Application of these principles to the evaluation of concrete was accomplished in experiments on concrete having low and high air contents. The effects of air entrainment upon freeze-thaw resistance were demonstrated.

Freeze-thaw characteristics of saturated aggregates relative to their physical properties such as porosity, absorption and bulk specific gravity were studied by submerging individual particles in pre-chilled mercury. Pressures associated with popouts in concrete were monitored and are presented along with accompanying theoretical …

An Investigation Of Low-Strength Concrete And Resulting Structural Failure In A Bridge Deck, James H. Havens

Kentucky Transportation Center Research Report

This investigation concerns the discovery of weak concrete in a portion of the deck of the Elkhorn City bridge, APD 640(4), within a year after it was opened to traffic. The deck concrete was placed between April 14 and June 14, 1968. The bridge serves heavy coal-trucks traffic. Failures occurred in the eastern-most span (No. 5) in April or May of 1969, Undoubtedly, the heavy loading contributed to early disclosure of defective concrete.

A preliminary investigation was made in May 1969, and reported by memorandum May 21, 1969. The bottom third or half of concrete in the affected portion, Span …

Locating And Tracing Seepage Water In Unstable Slopes, Yasin A. Alkhoja, Gordon D. Scott

Kentucky Transportation Center Research Report

With the increase in modern highway construction, the occurrence of landslides has been growing proportionally due to the use of deeper cuts and higher fills. It has been observed that landslides on highways often occur in fills on hillsides. Accumulation of water in the embankment, usually seeping from a nearby hill, may reduce the shear strength of the embankment soil and result in failure at a later time. Many landslides on Kentucky highways have occurred a few years after construction and obviously have been caused by the gradual weakening of the embankment due to a damming and accumulation of water. …

Slip-Form Paving, Kerry P. Magan

Kentucky Transportation Center Research Report

The proper placement, consolidation, and finishing of low-slump concrete without the aid of pre-erected side, forms has been widely acclaimed as an economical and effective procedure in the construction of portland cement concrete pavements. This construction procedure, commonly referred to as slip-form paving, depends upon the ability of low-slump concrete to remain in place after consolidation and removal of forms.

Slip-form pavers differ from conventional pavers in that no fixed side forms are required inasmuch as the slip-form paver has side forms that advance with the machine. Concrete is merely deposited on the prepared subgrade in front of the machine, …

Final Performance Report On Experimental Use Of Thermoplastic Pavement-Striping Materials, Assaf S. Rahal, Ronald D. Hughes

Kentucky Transportation Center Research Report

This study was undertaken in order to: 1) evaluate the performance of thermoplastic striping materials, 2) compare their performance on both portland cement concrete and bituminous concrete pavements to that of conventional traffic paints, and 3) to evaluate the economics of thermoplastics in terms of cost per mile per day of useful life. The performance of two brands of thermoplastic striping materials and conventional traffic paints applied at nine test sites in both rural and urban areas is reported herein. Application procedures, site locations, repair histories and materials specifications are included. Accumulative costs for each material at all sites for …

Slurry Seal Maintenance Applications, Robert L. Florence, Herbert F. Southgate

Kentucky Transportation Center Research Report

A slurry seal mixture consists of graded fine aggregate (normally minus 3/8-inch material), mixing grade emulsified asphalt (SS-1 or SS-lH), and water. The water is added to aid in mixing and to provide a free-flowing consistency so that the mixture can be spread in thin layers on the surface of an existing pavement. After the mixture is spread, the water evaporates and the remaining material, aggregate and base asphalt, forms a thin seal on the pavement surface which resembles a fine-grained asphaltic-concrete surface. As a result of the free-flowing consistency and the fineness of the aggregate, a slurry mixture readily …

Commentary On The 1968 Edition Of The Specification For The Design Of Cold-Formed Steel Structural Members, George Winter

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

No abstract provided.

Proceedings Of The International Symposium On Low Cost Housing Problems Related To Urban Renewal And Development, Oktay Ural

International Symposia on Low Cost Housing Problems

PREFACE TO SECOND EDITION--We are very happy to have a second printing of the Proceedings of the First International Symposium on Low-Cost Housing Problems Related to Urban Renewal and Development. The rather quick and large demand of this publication proved to us, once more, the importance and timeliness of the concern on the topic of housing technology and production. The contributions from eighteen nations painted a real picture of housing conditions and needs around the world.

The fifty-one technical papers included in this volume have been selected intentionally in various aspects of housing to draw a complete and meaningful picture …

Column Research Council: Proceedings 1970, Column Research Council

CCFSS Library (1939 - present)

The purposes of Column Research Council are to study and discuss problems related to the stability and strength of metal compression members; to organize research in this field; to disseminate information; and to formulate design rules for consideration by specification-writing bodies. The activities of the Council in 1970 are summarized in this report. A particular feature is the Proceedings of the 1970 Annual Technical Session. As in the past, the rosters of members of the Council and the By-Laws are also included. The support and technical contributions of the members and investigators are sincerely appreciated. Those individuals and organizations that …

Effects Of Cold Work In Cold-Formed Steel Structural Members, S. J. Britvec, Alexander Chajes, K. W. Warren, Jairo Uribe, George Winter

CCFSS Library (1939 - present)

No abstract provided.

Influence Of Ductility On The Structural Behavior Of Light-Gage Cold-Formed Steel Members, A. K. Dhalla, George Winter, S. J. Errera

CCFSS Library (1939 - present)

Ductility parameters defined in the second progress report were previously obtained by conducting tension coupon tests on specially produced A and S steels. In this report, tension coupon test results are presented for a 20 gage commercial low ductility steel, i.e. an ASTM Grade E steel, herein designated as steel B. Its behavior is compared with that of the specially rolled A and S steels to test the validity of conclusions arrived at in the second progress report. Test programs were set up to study the behavior of B steel under static tension loading, one program for single bolted connections …

Case Study And Analysis Of A Low Cost Housing Project In An Urban Area In India, P. Purusothaman, Jawalker K. Sridhar Rao

International Symposia on Low Cost Housing Problems

An urban development project involving residential and school buildings as an extension of Madras city is described. The analysis of the project is made using the systems approach as a problem of human settlements. The methods adopted for efficient utilisation of space at optimal cost by functional planning, use of prefabricated units and use of new constructional procedures is described. The interrelationship between environmental, technical, social, cultural, psychological, economic, financial and management factors in making decisions for the project is discussed.

Water Conservation : The Storage Life Of Farm Dams, D J. Carder

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

HOW MANY stock can a dam of a certain size and depth be expected to carry and how long will the supply last?

What size of dam is needed in case the winter rains fail? How many stock can a dam support and still provide a drought supply?

Water Management Research In Arid And Sub-Humid Lands Of The Less Developed Countries: Second Annual Progress Report, Utah Water Research Laboratory

Reports

No abstract provided.

Subcritical Flow At Open Channel Structures Bridge Constructions, Gaylord V. Skogerboe, Lloyd H. Austin, Kuan-Tao Chang

Reports

The techniques previously employed by the writers for describing subcritical flow at open channel constrictions have been found valid for analyzing nonuniform flow in open channels. Combining the nonuniform flow analysis with the submerged flow ratings for various bridge geometrics has provided an analytical means for determining the backwater due to the bridge constrictions under “abnormal stage – discharge” conditions.