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Test 478: Mccormick Super Wd-6, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 477: Mccormick Farmall Super Md, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

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 …

Test 476: Mccormick Super W-6, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 475: Mccormick Farmall Super M, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 474: Cockshutt 20*, Nebraska Tractor Test Lab

Nebraska Tractor Tests

Department of Agricultural Engineering Dates of test: June 16 to June 24, 1952. Manufacturer: C O C K S H U T T F A R M E Q U I P M E NT L T D . , B R A N T F O R D , O N T A R I O , C A N A D A,

Test 473: Bolens 12bb, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

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 …

Test 471 ; Terratrac Gt-30, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

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

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.

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

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

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.

Vapor Pressures & Relative Stabilities Of Certain Double Flourides, Walter L. Gage

Missouri School of Mines and Metallurgy Reports

The vapor pressures and relative stabilities of certain double fluorides such as sodium titanium fluoride and strontium titanium fluoride will be investigated by heating them under vacuum to determine the extent of evaporation or decomposition.

Test 472: John Deere 60 Gas, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 470: Oliver 77 Lpg, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 472: John Deere 60, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere 60

TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.

This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.

BELT HORSEPOWER TESTS

TEST …

Test 479: Harris Power Horse 53, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 488: Cockshutt 50 *, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

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

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.

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.

Direct Reduction Of Zinc Sulfide Under Vacuum -- Course Work, Merritt E. Langston

Missouri School of Mines and Metallurgy Reports

A study of the reduction of zinc sulfide under vacuum by such reducing agents as iron, calcium oxide and carbon, graphite, and iron and carbon.

An attempt to refine the impure zinc metal condensates obtained from the above reductions under under by the mechanism of a differential displacement of the volatile constituents.

Nttl Engine Test 2 Petter Av2 Diesel Engine, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Engine Test 1 Petter Ava2 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Clay Mineralogy And Soil Stabilization, James H. Havens, William A. Goodwin

Kentucky Transportation Center Research Report

This paper attempts to resolve a general concept of soil rheology from the standpoint of clay mineralogy, ion-exchange, properties of clay-water systems, and volume relationships existing between clay-water systems and granular structures. Both theory and experimental data are presented.

In the experimental phase, synthetic soils of varying clay contents were prepared from carefully fractionated soil constituents. These were subjected to combined-stress analyses, tests for plasticity characteristics, and detenninations of other physical properties.

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 …

Test. 469: Minneapolis-Moline Bf, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Progress Report: Reduction Of Zinc Sulfide, Merritt E. Langston

Missouri School of Mines and Metallurgy Reports

To date the work which has been completed has been concerned with an attempt to duplicate the results reported by Liu in his thesis. In short, little can be said in comparing the two separate investigations because there does not seem to be any apparent similarity, even though the operating conditions were kept as nearly the same as possible. Figure 1 shows the lack of agreement for the amount of total zinc distilled, expressed as weight percent....