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Articles 2641 - 2670 of 2796

Full-Text Articles in Civil and Environmental Engineering

Evaluation Of Traffic Paint In 1952, A. C. Peed Jr. Dec 1952

Evaluation Of Traffic Paint In 1952, A. C. Peed Jr.

Kentucky Transportation Center Research Report

Following the program of in-service transverse stripe evaluation coupled with laboratory study of traffic paint samples submitted by various manufacturers who propose to bid on the Departments paint requirements, field stripes were placed August 19, 1952. For this test stripes were placed in the same general location as that used the two previous years (U.S. 27 south of Lexington at the junction of the concrete and bituminous pavements). Gradings contained herein were made December 27, 1952, and thus represent a somewhat premature five-month evaluation. However, the set of stripes placed in 1951 were scrutinized since they had sixteen months of …


A Limestone-Calcium Chloride Stabilized Base, William B. Drake Aug 1952

A Limestone-Calcium Chloride Stabilized Base, William B. Drake

Kentucky Transportation Center Research Report

This report is mainly concerned with the calcium-chloride stabilized portion of a combination base. A 4-inch course of waterbound macadam was placed over a 1-inch insulation course overlying an existing traffic-bound stone surface. The next 4 inches of base above, the water bound material consisted of two 2-inch layers of calcium-chloride stabilized limestone of a design not used heretofore by the Department.

Bituminous concrete binder and surface courses laid over the base brought the total mat thickness to more than 11 inches. The surface width was 30 feet, and the length of the project was 1.1 miles.

Although the road …


Head Determinations For Structures On U.S 23 That Are Affected By Raising The Normal Pool Elevation Of Ohio River Lock And Dam No. 30 At Greenup, Kentucky, Eugene M. West Jul 1952

Head Determinations For Structures On U.S 23 That Are Affected By Raising The Normal Pool Elevation Of Ohio River Lock And Dam No. 30 At Greenup, Kentucky, Eugene M. West

Kentucky Transportation Center Research Report

During a visit to this office on July 3, 1952, Mr. J.O. Cornell requested the assistance of the Hydraulics Section of the Research Laboratory in investigating the possible head to be expected on the drainage structures on U.S. 23, that would be influenced by the proposed raising of the normal pool elevation of Ohio River Lock and Dam No. 30 at Greenup, Kentucky.

In order to better evaluate the head to be expected, I have approached the problem from an analytical standpoint, outlining and comparing the results from three suggested methods. The results of the analysis of the three separate …


Corrosion Of Highway Structures By Acid-Bearing Drainage Water In Hopkins County, James H. Havens Jun 1952

Corrosion Of Highway Structures By Acid-Bearing Drainage Water In Hopkins County, James H. Havens

Kentucky Transportation Center Research Report

Pursuant to your conversation with Mr. Hopgood concerning the above matter, Mr. Peed and I contacted Mr. Charlie Rogers, Resident Engineer, Madisonville, and made an inspection of the locations in question. In specific connection with this, you will recall from our Progress Report No. 1 on "A Survey of Acidity in Drainage Waters and the Condition of Highway Drainage Installations" that the acid conditions in Hopkins County were rated as extremely severe, if not the most critical in the state. It was, in part, due to the prevailing severity there that led to the selection of a location at Mortons …


Proposed Special Specification For Reflectorizing Glass Spheres, James H. Havens May 1952

Proposed Special Specification For Reflectorizing Glass Spheres, James H. Havens

Kentucky Transportation Center Research Report

In response to your request for a specification that will apply to glass beads for reflectorizing surfaces of signs, paints, and other night driving aids, we recommend the attached material which is drawn up in the form of a proposed specification. In general, the procedures. and ranges of performance characteristics conform with things that have been discussed by the A.S.T.M. Subcommittee on Traffic Paints. Actually, A.S.T.M. has not adopted a specification, but probably they will have one within the next year or two.

You will note the refractive index and size distribution or gradation are referred to in the specification, …


Field Trip To Daviess And Henderson Counties For Inspection Of Gravel-Bituminous Roads, Ellis G. Williams May 1952

Field Trip To Daviess And Henderson Counties For Inspection Of Gravel-Bituminous Roads, Ellis G. Williams

Kentucky Transportation Center Research Report

This series of inspections started April 28, with inspection of pavements containing gravel located in Daviess County. It was found that most pavements containing this aggregate has been resurfaced last year using a crushed limestone aggregate. There were, however, three hot-mix and one road-mix pavements remaining.


Experiences Of A Highway Commissioner, B. T. Moynahan Apr 1952

Experiences Of A Highway Commissioner, B. T. Moynahan

Kentucky's Annual Forum on Transportation

No abstract provided.


Design Of Highway Bridges Based On Frequency Of Heavy Vehicles, D. H. Overman Apr 1952

Design Of Highway Bridges Based On Frequency Of Heavy Vehicles, D. H. Overman

Kentucky's Annual Forum on Transportation

No abstract provided.


"Design And Construction Practices As Viewed By A Maintenance Engineer", R. L. Parker Apr 1952

"Design And Construction Practices As Viewed By A Maintenance Engineer", R. L. Parker

Kentucky's Annual Forum on Transportation

No abstract provided.


Contribution To Public Safety By Highway Maintenance And Traffic Control Operations, H. H. Sandusky Apr 1952

Contribution To Public Safety By Highway Maintenance And Traffic Control Operations, H. H. Sandusky

Kentucky's Annual Forum on Transportation

No abstract provided.


Employee Safety In The Use Of Men And Equipment On Highway Maintenance, Jack Carson Apr 1952

Employee Safety In The Use Of Men And Equipment On Highway Maintenance, Jack Carson

Kentucky's Annual Forum on Transportation

No abstract provided.


Planning Future County Road Systems, James T. Sabel Apr 1952

Planning Future County Road Systems, James T. Sabel

Kentucky's Annual Forum on Transportation

No abstract provided.


Rights-Of-Way For County Roads, James C. Colvin Apr 1952

Rights-Of-Way For County Roads, James C. Colvin

Kentucky's Annual Forum on Transportation

No abstract provided.


Design Of Flexible Pavements, A. O. Neiser Apr 1952

Design Of Flexible Pavements, A. O. Neiser

Kentucky's Annual Forum on Transportation

No abstract provided.


Soils, Their Classification, And Some Of Their Relations To Highway Construction, O. F. Threlkeld Apr 1952

Soils, Their Classification, And Some Of Their Relations To Highway Construction, O. F. Threlkeld

Kentucky's Annual Forum on Transportation

No abstract provided.


Contractor And Engineer Relations, W. O. Snyder Apr 1952

Contractor And Engineer Relations, W. O. Snyder

Kentucky's Annual Forum on Transportation

No abstract provided.


Comments On Paper Prepared By C. T. Warwick On The Subject Of "My Ideas Of An Ideal District Organization As It Relates To Maintenance, Equipment, Traffic And Safety.", R. L. Cambell Apr 1952

Comments On Paper Prepared By C. T. Warwick On The Subject Of "My Ideas Of An Ideal District Organization As It Relates To Maintenance, Equipment, Traffic And Safety.", R. L. Cambell

Kentucky's Annual Forum on Transportation

No abstract provided.


Comments On Report Given By C. T. Warwick On The Following Subject: "My Idea Of An Ideal Organization As It Relates To Maintenance, Equipment, Traffic And Safety.", Raymond Pile Apr 1952

Comments On Report Given By C. T. Warwick On The Following Subject: "My Idea Of An Ideal Organization As It Relates To Maintenance, Equipment, Traffic And Safety.", Raymond Pile

Kentucky's Annual Forum on Transportation

No abstract provided.


"My Idea Of An Ideal District Organization As It Relates To Maintenance, Equipment, Traffic, And Safety.", C. T. Warwick Apr 1952

"My Idea Of An Ideal District Organization As It Relates To Maintenance, Equipment, Traffic, And Safety.", C. T. Warwick

Kentucky's Annual Forum on Transportation

No abstract provided.


Maintenance Of Side Ditches, H. R. Ditto Apr 1952

Maintenance Of Side Ditches, H. R. Ditto

Kentucky's Annual Forum on Transportation

No abstract provided.


Highway Contractors Are Ready To Go, A. N. Carter Apr 1952

Highway Contractors Are Ready To Go, A. N. Carter

Kentucky's Annual Forum on Transportation

No abstract provided.


Highway Educational Opportunities In Kentucky, D. V. Terrell Apr 1952

Highway Educational Opportunities In Kentucky, D. V. Terrell

Kentucky's Annual Forum on Transportation

No abstract provided.


Foreword [1952], R. E. Shaver Apr 1952

Foreword [1952], R. E. Shaver

Kentucky's Annual Forum on Transportation

No abstract provided.


A Study Of Runoff From Small Drainage Areas And The Openings In Attendant Drainage Structures, Eugene M. West, J. O. Cornell Apr 1952

A Study Of Runoff From Small Drainage Areas And The Openings In Attendant Drainage Structures, Eugene M. West, J. O. Cornell

Kentucky Transportation Center Research Report

In 1926, John T. Lynch read to the Kentucky Academy of Sciences a paper entitled, "The Relation Between Drainage Area and Waterway Required for Culverts and Small Bridges in Kentucky." The paper was based on a study of many small drainage structures then existing in the highway system, and a general evaluation of the performance of the structures in relation to rainfall and runoff from contributing watersheds.

As a result of this report, and in accordance with the suggestions contained in it, the Department of Highways adopted a system of runoff coefficients applicable to different sections of the state and …


A Test Road For The Evaluation Of Sandstone As An Aggregate In Plant-Mix Bituminous Pavements, Ellis G. Williams Apr 1952

A Test Road For The Evaluation Of Sandstone As An Aggregate In Plant-Mix Bituminous Pavements, Ellis G. Williams

Kentucky Transportation Center Research Report

In eastern Kentucky, deep deposits of sandstones and shales overlie the vast deposits of limestones that prevail throughout the central part of the state. Whereas locally available limestones of high quality comprise the major sources of crushed stone or aggregate for highway paving in the central part of the state, some areas of eastern Kentucky are so far removed from sources of these and other high-type aggregates that transportation of materials becomes a major cost item. It is a matter of record that these costs frequently approach or even exceed the cost of the material at the source, Since aggregate …


A Bank Gravel Base Containing Calcium Chloride [Report No. 1], William B. Drake Feb 1952

A Bank Gravel Base Containing Calcium Chloride [Report No. 1], William B. Drake

Kentucky Transportation Center Research Report

This report is concerned with a bank gravel base construction project, and particularly with that part of the base containing calcium chloride as a stabilizing agent. The project was carried out on a relocation of U.S. 62, between Kuttawa in Lyon County and Kentucky Dam on the Tennessee River. A part of the project, as shown on the general location map in Fig. 1, was in Livingston County between the Cumberland and Tennessee Rivers.


Comparative Study Of The Physical Properties Of Traffic Paints, A. C. Peed Jr. Dec 1951

Comparative Study Of The Physical Properties Of Traffic Paints, A. C. Peed Jr.

Kentucky Transportation Center Research Report

Traffic or zone paints have become a major item of expenditure for highway departments with their increasing mileages and with the increase in traffic using the highways. Extending the mileage requiring marking and increasing the traffic wear on the marking has necessitated successively larger purchases of paint and associated equipment. As this market became larger increasing numbers of manufacturers have entered the field with a great diversity of formulations having differing properties.

In order to bring some order out of this situation the Research Laboratory in cooperation with the Division of Traffic undertook a study of the paints as offered …


Observation On Seal Coats, Tack Coats, Penetration Macadam, And Blade Spread Hot Mix In 1951, William B. Drake, Harvey J. Field Jr., S. T. Collier Dec 1951

Observation On Seal Coats, Tack Coats, Penetration Macadam, And Blade Spread Hot Mix In 1951, William B. Drake, Harvey J. Field Jr., S. T. Collier

Kentucky Transportation Center Research Report

During the 1950 construction season the Research Division observed the construction of several types of seal coats, a few tack coats and a penetration macadam pavement, A report, covering mostly construction practices on these projects, was submitted to the Research Committee at the February meeting in 1951. The report is titled "Observations on Seal Coats, Tack Coats, and Penetration Macadam Construction in 1950," and dated January, 1951.

A follow-up of most of these projects is submitted here, The performance of the seals was greatly influenced by failure of the bases during the very severe winter of 1950-51. Considerable frost action …


Spherical Lens Optics Applied To Retro-Directive Reflection, James H. Havens, Allie C. Peed Jr. Dec 1951

Spherical Lens Optics Applied To Retro-Directive Reflection, James H. Havens, Allie C. Peed Jr.

Kentucky Transportation Center Research Report

This paper describes some expedient applications of elementary optical principles to the evaluation of glass-bead reflectorizing systems for highway signs and markers. 'The optical function of spherical lenses in achieving reflex-reflection is illustrated both photographically and diagrammatically. Various optical designs are discussed and analyzed. By simple geometric optics, the efficiency of these systems is correlated with the practical performance criteria for retro-directive reflectorization.


Vibratory Compaction Of Base Courses, Kentucky Highway Materials Research Laboratory Nov 1951

Vibratory Compaction Of Base Courses, Kentucky Highway Materials Research Laboratory

Kentucky Transportation Center Research Report

Early this month, on a field trip with Mike Logan of tho Bureau of Public Roads and R. D. Medley, Asst. Director of Design, I had an opportunity to look over a project in Ohio where a vibratory method of compaction was being used in tho construction of a macadam base course, This type of compaction is relatively new, it having been tried for the first time in this country about four years ago, To my knowledge, the first published report on the procedure was made in the Proceedings of the Highway Research Board, Volume 27, page 148, 1947.

This …