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Articles 1 - 30 of 42
Full-Text Articles in Engineering
Flexible Pavement Design Criterion, James H. Havens
Flexible Pavement Design Criterion, James H. Havens
Kentucky Transportation Center Research Report
Our recent report on "Rational Analysis of Kentucky Flexible Pavement Criterion," November 1968, presented theoretical treatments of current design curves – which enabled transformation of the current curves into companion sets of curves embodying alternative proportions of bituminous concrete and dense-graded aggregate base. We are privileged now to submit additional analytical information and to offer recommendations for revising the present design criterion.
Developments In Concrete Pavement Construction, Dan C. Woodward
Developments In Concrete Pavement Construction, Dan C. Woodward
Kentucky's Annual Forum on Transportation
No abstract provided.
The National Bridge Inspection Program, W. Jack Wilkes
The National Bridge Inspection Program, W. Jack Wilkes
Kentucky's Annual Forum on Transportation
No abstract provided.
State Bridge Program, T. J. Hopgood
State Bridge Program, T. J. Hopgood
Kentucky's Annual Forum on Transportation
No abstract provided.
Bridge Modernization Program - Logan County, Henry A. Padgett Jr.
Bridge Modernization Program - Logan County, Henry A. Padgett Jr.
Kentucky's Annual Forum on Transportation
No abstract provided.
Hot Mix Sand Surface, James H. Havens
Hot Mix Sand Surface, James H. Havens
Kentucky's Annual Forum on Transportation
No abstract provided.
The Relationship Between The Development Of Highways And Water Resources Management, G. F. Hughes Jr.
The Relationship Between The Development Of Highways And Water Resources Management, G. F. Hughes Jr.
Kentucky's Annual Forum on Transportation
No abstract provided.
Impact Of Highway Construction On Water Resource Management, Joe Tucker
Impact Of Highway Construction On Water Resource Management, Joe Tucker
Kentucky's Annual Forum on Transportation
No abstract provided.
Joint Development And Design Team Concept, F. L. Anthony
Joint Development And Design Team Concept, F. L. Anthony
Kentucky's Annual Forum on Transportation
No abstract provided.
The Architecture Of Bridges, Arnold H. Vollmer
The Architecture Of Bridges, Arnold H. Vollmer
Kentucky's Annual Forum on Transportation
No abstract provided.
New Developments In Joint Sealing Practice For Longer Spans, Stewart C. Watson
New Developments In Joint Sealing Practice For Longer Spans, Stewart C. Watson
Kentucky's Annual Forum on Transportation
No abstract provided.
Manual Of Uniform Traffic Control Devices And Problems In Traffic Control Agreements, Grover C. Ethington Jr.
Manual Of Uniform Traffic Control Devices And Problems In Traffic Control Agreements, Grover C. Ethington Jr.
Kentucky's Annual Forum on Transportation
No abstract provided.
State Road Systems And Maintenance Responsibility, John W. Spurrier
State Road Systems And Maintenance Responsibility, John W. Spurrier
Kentucky's Annual Forum on Transportation
No abstract provided.
Rural Secondary And County Road Aid Programs, John D. Witt
Rural Secondary And County Road Aid Programs, John D. Witt
Kentucky's Annual Forum on Transportation
No abstract provided.
Kentucky Highway Program, W. B. Hazelrigg
Kentucky Highway Program, W. B. Hazelrigg
Kentucky's Annual Forum on Transportation
No abstract provided.
Federal-Aid Highway Program After Interstate, Robert S. Holmes
Federal-Aid Highway Program After Interstate, Robert S. Holmes
Kentucky's Annual Forum on Transportation
No abstract provided.
New Provisions Of The Federal Aid Highway Act Of 1968, John A. Swanson
New Provisions Of The Federal Aid Highway Act Of 1968, John A. Swanson
Kentucky's Annual Forum on Transportation
No abstract provided.
Twentieth Kentucky Highway Conference Committee, Kentucky Transportation Center
Twentieth Kentucky Highway Conference Committee, Kentucky Transportation Center
Kentucky's Annual Forum on Transportation
No abstract provided.
Hot Mix Sand Surfacing, James H. Havens
Hot Mix Sand Surfacing, James H. Havens
Kentucky Transportation Center Research Report
Everyone has some compassion toward drivers who become victims of pavement slipperiness. The development of slipperiness on a road surface follows one of the laws of nature. Why not, then, employ other laws provided by nature to better advantage? For example, craftsmen use grinders, abrasives, buffers, etc. to achieve glossy surface finishes. Traffic does the same to our pavements. We might employ craftsmens' routine in reverse -- that is, roughen the surface. Better still, the principles that are apparent in a grinding wheel or whetstone may be used as a model for our pavement surface: a material of hard, abrasive …
Rational Analysis Of Kentucky Flexible Pavement Design Criterion, Herbert F. Southgate, Robert C. Deen, James H. Havens
Rational Analysis Of Kentucky Flexible Pavement Design Criterion, Herbert F. Southgate, Robert C. Deen, James H. Havens
Kentucky Transportation Center Research Report
Rational criteria for the structural design of pavements are emerging from classical theories equated to the observed behavior of real pavements. Pavement behavior is known to be affected by traffic, variations in soil support, and variations of component thicknesses. Considerable attention has been devoted to the mechanistic response of pavements to static and dynamic loads and to the development of theoretical design procedures, which rely, in part, on the computation of certain critical stresses, strains, and(or) deflections in the structure. A computer program (1) for the elastic analysis of multilayered pavement systems has enabled an extensive investigation of the effects …
Proposed Experimental Design And Construction Features, Kentucky Department Of Highways
Proposed Experimental Design And Construction Features, Kentucky Department Of Highways
Kentucky Transportation Center Research Report
PURPOSE AND OBJECTIVES: The experimental features proposed in connection with this project are three-fold: the first pertains to subsurface drainage of the pavement system, the second pertains to the feasibility of constructing full-depth, asphaltic concrete pavement sections directly on subgrade material -- rock or soil; the third pertains to the structural design and performance of pavement sections employing designated substitutions of bituminous concrete dense-graded aggregate base.
Discussion On Skid Resistance Of Pavement Surfaces, Rolands L. Rizenbergs
Discussion On Skid Resistance Of Pavement Surfaces, Rolands L. Rizenbergs
Kentucky Transportation Center Research Report
The concern for adequate skid resistance or friction of pavement surfaces is confined to wet weather conditions. Dry pavements are highly skid resistant unless the surface contains loose material, such as gravel, sand, etc., which could provide rolling action by the particles under the tires. Surface contaminates, such as oil, soft tars and asphalt, etc., could also provide lubrication to the surface and create a slippery condition. Normally, however, water is the lubricating agent reducing pavement friction and in some cases creating very hazardous driving conditions. Another situation of concern is drainage, or lack of proper drainage, of the pavement. …
I-75 Kenton County Slide, Herbert F. Southgate
I-75 Kenton County Slide, Herbert F. Southgate
Kentucky Transportation Center Research Report
No abstract provided.
Landslides In Kentucky, Robert C. Deen, James H. Havens
Landslides In Kentucky, Robert C. Deen, James H. Havens
Kentucky Transportation Center Research Report
The reoccurrence of certain features of landslides in Kentucky suggests that the difficulties in the State can be readily classified. Because of this repetitive nature, one can be alerted to the possibility of slides in certain situations early in the planning and design stages of the facility to be constructed. Thus, the traveling public might be spared the inconvenience illustrated in Figure 1. Enough cannot be said concerning the necessity for having adequate soils and geological information concerning possible routes for highway locations, and a review of a number of landslides in Kentucky suggests that there are certain troublesome geologic …
Florida Skid Correlation Study Of 1967 – Skid Testing With Automobiles, Rolands L. Rizenbergs
Florida Skid Correlation Study Of 1967 – Skid Testing With Automobiles, Rolands L. Rizenbergs
Kentucky Transportation Center Research Report
The inclusion of automobiles in the Florida skid correlation study was promoted by the recognition of the following needs: 1) to compare stopping-distance measurements obtained with different instrumentation, 2) to suggest a standard method of stopping-distance testing, 3) to relate skid-resistance measurements of trailer-type testers with stopping distances of automobiles, and 4) to explore other skid-resistance measurements techniques using an automobile.
The vehicles were all full-size automobiles. Each vehicle was instrumented to measure a distance from a predetermined pressure in the brake hydraulic system to where the vehicle came to rest. Stopping distance in most of the automobiles was read …
Performance Of A Reinforced Concrete Pipe Culvert Under Rock Embankment, Robert C. Deen
Performance Of A Reinforced Concrete Pipe Culvert Under Rock Embankment, Robert C. Deen
Kentucky Transportation Center Research Report
A 48-inch diameter reinforced concrete pipe installation has been observed in order to evaluate the performance of both types of bedding conditions as currently used by the Kentucky Department of Highways. A portion of the pipe was laid using Kentucky's Standard B Bedding. The remainder of the pipe culvert was laid using the B1 Bedding (imperfect trench); the design height of the fill (36 feet) was sufficient to require the imperfect trench construction. The embankment was primarily of a rock fill material, with the largest particle size limited to a maximum of 3 feet. The portion of the pipe …
Determination Of Traffic Parameters For The Prediction, Projection, And Computation Of Ewl’S, John A. Deacon, Robert L. Lynch
Determination Of Traffic Parameters For The Prediction, Projection, And Computation Of Ewl’S, John A. Deacon, Robert L. Lynch
Kentucky Transportation Center Research Report
One of the first published methods for the structural design of highway pavements was called the Massachusetts Rule and was presented in the eighth annual report of the Massachusetts Highway Commission in 1901 (1). The essence of this procedure was a rather intuitive assumption concerning the distribution of vertical pressures beneath a loaded area. For design purposes, this required the selection of a design load which, since failure was assumed to be catastrophic and not cumulative, could be taken as the largest load that could reasonably be anticipated during the design life of the pavement. The prediction of such a …
Durability Of Culvert Pipe, James H. Havens
Durability Of Culvert Pipe, James H. Havens
Kentucky Transportation Center Research Report
Almost twenty years ago the Department began to develop durability data on types of culvert materials. In the interim, various stopgap as well as very judicious policies have issued. The present criterion or design practice applicable to Federal Aid projects was affirmed by the Bureau of Public Roads, May 24, 1965. Extensive field surveys have been conducted; various design innovations have been employed; and a "hot" test site has, in a demonstrative way, provided critical life-expectancy records. All past history had been documented previously; however, a brief retrospective summary will provide some continuity between forethought and certain issues now maturing.
Equivalent Axleloads For Pavement Design, John A. Deacon, Robert C. Deen
Equivalent Axleloads For Pavement Design, John A. Deacon, Robert C. Deen
Kentucky Transportation Center Research Report
Proper structural design of highway pavements requires an evaluation of the destructive effects of the anticipated vehicular loading. The concept of load equivalency provides a means for expressing these destructive effects in terms of a single measure, the equivalent axleloads (EAL's). The design EAL's represents the equivalent number of applications of a standard or base axleload anticipated during the design life.
Experimental Applications Of Protective Coatings To Shales Exposed In Highway Cuts, James H. Havens
Experimental Applications Of Protective Coatings To Shales Exposed In Highway Cuts, James H. Havens
Kentucky Transportation Center Research Report
Many shales exposed in roadway cut-sections are susceptible to weathering, slaking, and erosion; fallout and taluses clog drainage; benches overflow; and occasionally landslides or rockslides develop. Presently, in design, certain types of shales and even named formations are afforded wider benches than others; soil mantles at the tops of cuts are being stripped back farther; and, of course, sound ledge-rock offers the preferred type of bench-cap. Pre-splitting methods of blasting have greatly enhanced the appearance of cuts and have minimized the shattering of cut faces. The resulting surfaces frequently are quite smooth when first exposed and remain so if the …