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Articles 37231 - 37260 of 39792

Full-Text Articles in Engineering

Seismic Behavior Of Multistory Braced Steel Frames, R. D. Hanson, Subhash C. Goel Apr 1972

Seismic Behavior Of Multistory Braced Steel Frames, R. D. Hanson, Subhash C. Goel

CCFSS Library (1939 - present)

No abstract provided.


Expansive Limestone Aggregate In A Concrete Pavement, James H. Havens, Assaf S. Rahal Apr 1972

Expansive Limestone Aggregate In A Concrete Pavement, James H. Havens, Assaf S. Rahal

Kentucky Transportation Center Research Report

Recurrent blowups and surface cracking are common symptoms of distress in concrete pavements. Premature appearance of distress symptoms is alarming because the materials used in the concrete become suspect. Criteria for design, quality of materials, and construction are necessarily re-evaluated. Indeed, a dutiful effort to discover the cause(s) and to provide future safeguards is reasonably expected.

The analysis of causative factors besetting I 65-1(13)13 was complicated by an intuitive notion that blowups and surface cracks might be separate and independent problems. The crack pattern resembled the configuration of the wire mesh -- which was vibrated into position after the concrete …


An Operational Analysis Of The I 64, I 65, I 71 Route Junction In Louisville, Jerry G. Pigman, William M. Seymour, Kenneth R. Agent, Don L. Cornette Apr 1972

An Operational Analysis Of The I 64, I 65, I 71 Route Junction In Louisville, Jerry G. Pigman, William M. Seymour, Kenneth R. Agent, Don L. Cornette

Kentucky Transportation Center Research Report

The Kennedy Interchange in Louisville is the most geometrically complicated of any in Kentucky; it is the junction of three interstate routes, I 64, I 65, and I 71. The many diverging, weaving, and merging movements demand a driver's attention. One merging situation collapses into an impasse during peak-hour traffic. This study is responsive to certain inquiries by the Department concerning safety and possible discovery of design deficiencies at this interchange. It was not intended to be an in-depth study but rather an exploratory identification of problems and their locations; more comprehensive studies, by others, would ensue if needed. The …


Comparative Evaluation Of Raygo 404 Vibratory Roller, Jerry D. Ross, Herbert F. Southgate, Donald C. Newberry Jr. Apr 1972

Comparative Evaluation Of Raygo 404 Vibratory Roller, Jerry D. Ross, Herbert F. Southgate, Donald C. Newberry Jr.

Kentucky Transportation Center Research Report

Roller evaluations are rather phenomenological -- that is, one must rely somewhat on observations. Density measurements following each excursion of the compactor may not relate directly to the work done in compressing the layer. When no increase in density is realized, no work is accomplished. Work is defined here in the classical sense. Energy expended without producing an increase in density is wasted. Thereafter, the only way additional classical work can be done on the layer is to reduce density.

The number of excursions necessary to achieve an acceptable or comparable density generally reflects efficiency of the compactor. Much may …


Urban Expressway Design, Edmund F. Passarelli Mar 1972

Urban Expressway Design, Edmund F. Passarelli

Kentucky's Annual Forum on Transportation

No abstract provided.


The Environment And Highways, John D. Cherry Mar 1972

The Environment And Highways, John D. Cherry

Kentucky's Annual Forum on Transportation

No abstract provided.


Traffic Noise-Techniques For Measurement And Control, Louis F. Cohn Mar 1972

Traffic Noise-Techniques For Measurement And Control, Louis F. Cohn

Kentucky's Annual Forum on Transportation

No abstract provided.


Full-Depth Asphalt Concrete Pavement, William B. Drake Mar 1972

Full-Depth Asphalt Concrete Pavement, William B. Drake

Kentucky's Annual Forum on Transportation

No abstract provided.


Quality Crushed Stone Construction, F. P. Nichols Jr. Mar 1972

Quality Crushed Stone Construction, F. P. Nichols Jr.

Kentucky's Annual Forum on Transportation

No abstract provided.


Continuously Reinforced Concrete Pavement, Robert C. Deen Mar 1972

Continuously Reinforced Concrete Pavement, Robert C. Deen

Kentucky's Annual Forum on Transportation

No abstract provided.


Urban Mass Transportation Programs, A. R. Childs Mar 1972

Urban Mass Transportation Programs, A. R. Childs

Kentucky's Annual Forum on Transportation

No abstract provided.


Remarks During The Municipal Government Session, Charles Pryor Jr. Mar 1972

Remarks During The Municipal Government Session, Charles Pryor Jr.

Kentucky's Annual Forum on Transportation

No abstract provided.


Legislation Enacted By The 1972 General Assembly: Senate Bills 114 And 68, Dolly Mcnutt Mar 1972

Legislation Enacted By The 1972 General Assembly: Senate Bills 114 And 68, Dolly Mcnutt

Kentucky's Annual Forum on Transportation

No abstract provided.


U.S. 25-U.S. 42 Replacement Bridge Over The Ohio River Between Covington, Kentucky And Cincinnati, Ohio, Logan L. Ratliff Mar 1972

U.S. 25-U.S. 42 Replacement Bridge Over The Ohio River Between Covington, Kentucky And Cincinnati, Ohio, Logan L. Ratliff

Kentucky's Annual Forum on Transportation

No abstract provided.


Evaluation Of Timber Caisson Us 25 Bridge Over Ohio River, Jas H. Havens, Assaf Rahal Mar 1972

Evaluation Of Timber Caisson Us 25 Bridge Over Ohio River, Jas H. Havens, Assaf Rahal

Kentucky's Annual Forum on Transportation

No abstract provided.


Introduction Of Us25-Us42 Bridge Panel Discussion, Charles G. Cook Mar 1972

Introduction Of Us25-Us42 Bridge Panel Discussion, Charles G. Cook

Kentucky's Annual Forum on Transportation

No abstract provided.


Bridges And Navigation Interests, S. W. Thoroughman Mar 1972

Bridges And Navigation Interests, S. W. Thoroughman

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky's Approach To Development, Howard C. Lawson Jr. Mar 1972

Kentucky's Approach To Development, Howard C. Lawson Jr.

Kentucky's Annual Forum on Transportation

No abstract provided.


Rural Roads Program, Otto Ingram Mar 1972

Rural Roads Program, Otto Ingram

Kentucky's Annual Forum on Transportation

No abstract provided.


Luncheon Address [1972], Wendell H. Ford Mar 1972

Luncheon Address [1972], Wendell H. Ford

Kentucky's Annual Forum on Transportation

No abstract provided.


Remarks By Charles Pryor, Jr., Charles Pryor Mar 1972

Remarks By Charles Pryor, Jr., Charles Pryor

Kentucky's Annual Forum on Transportation

No abstract provided.


Note To Conference Registrants [1972], Kentucky Transportation Center Mar 1972

Note To Conference Registrants [1972], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Degradation Of Limestone Aggregate During Construction, Robert C. Deen, Herbert F. Southgate Mar 1972

Degradation Of Limestone Aggregate During Construction, Robert C. Deen, Herbert F. Southgate

Kentucky Transportation Center Research Report

Twelve construction projects were sampled at the plant, from the spreader box, after spreading, and after compacting. Laboratory tests including gradation analysis, ball-mill wear tests, Atterberg limits, and specific gravity were performed to determine changes in gradations. Kentucky limestones are very hard, high quality aggregates, with no significant degradation characteristics under current construction practices. On a given project, the construction procedure did not cause any significant degradation. Amongst projects, variances can be significant; however, this is attributable to the variation in initial gradations on the different projects.


Cyclic Loading Of Full-Size Steel Connections, E. P. Popov, R. M. Stephen Feb 1972

Cyclic Loading Of Full-Size Steel Connections, E. P. Popov, R. M. Stephen

CCFSS Library (1939 - present)

No abstract provided.


Noise Pollution And Abatement: A Review Of Literature, Kenneth R. Agent, Robert C. Deen Feb 1972

Noise Pollution And Abatement: A Review Of Literature, Kenneth R. Agent, Robert C. Deen

Kentucky Transportation Center Research Report

Complaints concerning traffic noise and possibly seismic vibrations emanating from highways would probably have been adjudicated on the basis of common law doctrines pertaining to "nuisances", "common enemy'', and ''power of relief" were it not for recent legislation and regulations directed toward protection of the total environment. In effect, "freedom from noise" has been added to the clean water, clean air, clean earth policies. Surely each of those policies are founded on public sentiment.

There have been a few instances where the Department has yielded relief because of traffic noise. Now safeguarding regulations seem inevitable.

In the past, this Division …


Stress Histories Of Bridge Members From Scratch Gage Records, Ronald D. Hughes Feb 1972

Stress Histories Of Bridge Members From Scratch Gage Records, Ronald D. Hughes

Kentucky Transportation Center Research Report

This report describes the use of scratch gages for obtaining strain histories of bridge members. Basic components of the gage are designated and its operation is described in general terms. Stress histories, deduced from strain records, for various members of three bridges obtained through use of the gages are presented. A procedure for use in replicating sections of deteriorated members is described.


Cold-Formed Steel Structural Elements Subjected To Time-Dependent Loading, Charles G. Culver Jan 1972

Cold-Formed Steel Structural Elements Subjected To Time-Dependent Loading, Charles G. Culver

CCFSS Library (1939 - present)

This report summarizes the results obtained from a comprehensive study of the behavior of thin-walled, cold-formed members subjected to impact or shock loading. The influence of local buckling and the concept of effective width in the elastic post-buckling range on the dynamic response of these members is described. Analytical and experimental results for thin compression elements, beams and columns are discussed. Comparisons between the analytical and experimental results are presented. Application of the results obtained from this research to practical situations involving impact or shock loading of cold-formed members is also discussed.


Column Research Council Proceedings, Fritz Engineering Foundation Jan 1972

Column Research Council Proceedings, Fritz Engineering Foundation

CCFSS Library (1939 - present)

These Proceedings are a record of the Annual Meeting containing the abstracts of the reports presented and the transcription of our panel discussion.


Study Of Cold-Formed Steel Structural Members Made Of Thick Sheets And Plates, William M. Mckinney, Victor A. S. Liu Jan 1972

Study Of Cold-Formed Steel Structural Members Made Of Thick Sheets And Plates, William M. Mckinney, Victor A. S. Liu

CCFSS Library (1939 - present)

INTRODUCTION In steel design, the Specification for the Design of Cold-Formed Steel Structural Members l issued by the American Iron and Steel Institute has long been used for structural members cold-formed to shape from steel sheet or strip used for load-carrying purposes in buildings and other thin walled steel structures. Even though no thickness limitation was included in previous editions of the Specification, 2,3, the thickness of material used in the cold-formed steel construction was often limited to about 1/4 inch because the maximum thickness of steels used under all ASTM Specifications listed in Section 1.2 of the AISI Specification …


Proceedings Of The 2nd International Symposium On Lower-Cost Housing Problems, Oktay Ural Jan 1972

Proceedings Of The 2nd International Symposium On Lower-Cost Housing Problems, Oktay Ural

International Symposia on Low Cost Housing Problems

To protect and improve the total human environment is a major concern of all the nations of the world. This is well noted in the recent activities of the United Nations. The provision of decent homes for every family of our world is an integral part of the human environment. It is this belief which generated the initial interest for the planning of the International Symposia on Lower-Cost Housing Problems.

The purpose of the Second International Symposium is many sided: to generate concern on the housing problems around the world as they exist today; to gather people who share mutual …