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Articles 73741 - 73770 of 74982

Full-Text Articles in Engineering

Cold-Weather Concreting, Milton Evans Jr. Feb 1960

Cold-Weather Concreting, Milton Evans Jr.

Kentucky Transportation Center Research Report

In order to successfully place concrete in cold weather, certain established requirements must be met. The concrete must not be allowed to freeze, it must not be overheated by artificial means in an attempt to protect it from the cold, and proper curing conditions must be maintained during the period of protection to insure sufficient moisture for the cement to hydrate. Generally, temperatures of not less than 50°F and not more than 90°F are satisfactory. These temperatures must be maintained long enough for the concrete to develop sufficient strength to withstand freezing temperatures and to support the loads. Generally, concretes …


Camber Design Study For Concrete Pipe Culverts, Aubrey D. May Feb 1960

Camber Design Study For Concrete Pipe Culverts, Aubrey D. May

Kentucky Transportation Center Research Report

When a pipe culvert is constructed on or near the natural ground surface and covered by a highway fill or embankment, the weight of the embankment compresses and consolidates the foundation soil, settlement occurs, and the culvert subsides or sags below the original line as illustrated in Fig. 1. The amount of settlement depends, of course, upon the fill height or load, the depth of foundation soil, and the susceptibility of the foundation soil to consolidation. In addition, and toward the toes of the embankment, the structure may tend to lengthen. It may lengthen slightly, however, simply because the distance …


Interim Status Of Tire Service Life Study, William B. Drake Feb 1960

Interim Status Of Tire Service Life Study, William B. Drake

Kentucky Transportation Center Research Report

The service life of selected, most commonly used tire sizes installed on Highway Department trucks and sedans will be evaluated. Major manufacturers and other manufacturers (later defined) products will be studied to determine average service life. One half or four highway districts (1, 2, 7 and 8) will be involved in the project and the trucks used will be selected or assigned at random in these districts (The sedans used in the study will be Central Office pool vehicles). A progress record for each tire and use record for each vehicle with regular report or measurement times to be specified …


Limestone Fine Aggregate In Portland Cement Concrete, George R. Laughlin Feb 1960

Limestone Fine Aggregate In Portland Cement Concrete, George R. Laughlin

Kentucky Transportation Center Research Report

Limestone is classified as a carbonaceous sedimentary rock. In general, the term is applied only to those rocks in which the carbonate fraction exceeds the non-carbonate fraction. The carbonate may be calcite and/or dolomite. In addition to the primary constituents, there are contaminating minerals such as quartz, clay minerals, chalcedony (chert and flint), pyrite, feldspars and organic matter. The clay minerals are probably the most deleterious contaminates in carbonate rock.


Investigation Of Concrete Pavement, Us 60 Between Versailles And Frankfort, William B. Drake Feb 1960

Investigation Of Concrete Pavement, Us 60 Between Versailles And Frankfort, William B. Drake

Kentucky Transportation Center Research Report

A preliminary examination was made of the subject pavement on November 2, 1959, by James H. Havens and the writer, of the Research Division, and J. S. Riley, Construction Division. The discover of deleterious matter in the pavement was the major reason for the inspection. Foreign objects could be found imbedded in the concrete pavement throughout the project. However, there were a great many more in two sections, each about one quarter of a mile long, than on the rest of the project. The objects observed were wood, cloth, metal and soil. However, there was decided prevalence of soil. The …


Morton’S Gap Culvert-Pipe Installation, James H. Havens Feb 1960

Morton’S Gap Culvert-Pipe Installation, James H. Havens

Kentucky Transportation Center Research Report

The attached report, "Interim Performance Report on Morton's Gap Culvert Pipe Installation", by James H. Havens, is primarily a listing of the status of the condition of pipe still in the test and the date of failure or removal of the other sections.

Mr. Havens has prepared as background information, a brief record of the Department's practices involving pipe use for the past 10 years. He has begun with the Research Division's first study into pipe damaged by the corrosive action of acid water. This information is presented primarily because of its significance in the development of the culvert pipe …


Specification For The Design Of Light Gage Cold-Formed Steel Structural Members, American Iron And Steel Institute Jan 1960

Specification For The Design Of Light Gage Cold-Formed Steel Structural Members, American Iron And Steel Institute

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

No abstract provided.


Advertising Brochure: 1960 Case Tractors, Nebraska Tractor Test Lab Jan 1960

Advertising Brochure: 1960 Case Tractors, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Agricultural Aircraft Equipment, N. Shafer Jan 1960

Agricultural Aircraft Equipment, N. Shafer

Nebraska Agricultural Experiment Station: Historical Circulars

This bulletin gives a detailed account of the installation, operation, and performance of spray dispersal equipment as tested on the Piper PA-18A airplane. Equipment is also applicable to other types of agricultural aircraft now being used. A list of various aircraft equipment and where it can be obtained is included.


Test 771: Case 541 (Gasoline), Nebraska Tractor Test Lab Jan 1960

Test 771: Case 541 (Gasoline), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT

GENERAL CONDITIONS

East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers.

PREPARATION FOR PERFORMANCE RUNS

The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


Advertising Brochure: International Harvester B-275, Nebraska Tractor Test Lab Jan 1960

Advertising Brochure: International Harvester B-275, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 733: Mccormick International B-275 (Diesel) Also International 354 (Diesel) 8-Speed, Nebraska Tractor Test Lab Jan 1960

Test 733: Mccormick International B-275 (Diesel) Also International 354 (Diesel) 8-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


Test 807: Massey-Ferguson Mf-50 (Diesel), Nebraska Tractor Test Lab Jan 1960

Test 807: Massey-Ferguson Mf-50 (Diesel), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


Strength And Volume Change Characteristics Of Bituminous Mixtures : Technical Paper, James Hamilton Schaub, William Harner Goetz Jan 1960

Strength And Volume Change Characteristics Of Bituminous Mixtures : Technical Paper, James Hamilton Schaub, William Harner Goetz

JTRP Technical Reports

No abstract provided.


Test 766: Oliver 1800, Nebraska Tractor Test Lab Jan 1960

Test 766: Oliver 1800, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


International Farm Crawlers: T-4, T-5, & Td 5, Nebraska Tractor Test Lab Jan 1960

International Farm Crawlers: T-4, T-5, & Td 5, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.


Test 734: David Brown 850 (Diesel), Nebraska Tractor Test Lab Jan 1960

Test 734: David Brown 850 (Diesel), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


Designing Fine Bituminous Mixtures For High Skid Resistance, Jack E. Stephens, William Harner Goetz Jan 1960

Designing Fine Bituminous Mixtures For High Skid Resistance, Jack E. Stephens, William Harner Goetz

JTRP Technical Reports

No abstract provided.


Locating Slippery Highway Sites By Accident Analysis : Technical Paper, Vergil G. Stover, Harold L. Michael Jan 1960

Locating Slippery Highway Sites By Accident Analysis : Technical Paper, Vergil G. Stover, Harold L. Michael

JTRP Technical Reports

No abstract provided.


Strength And Volume Change Characteristics Of A Bituminous Mixture Under Triaxial Testing, James Hamilton Schaub Jan 1960

Strength And Volume Change Characteristics Of A Bituminous Mixture Under Triaxial Testing, James Hamilton Schaub

JTRP Technical Reports

No abstract provided.


Evaluation Of Major Urban Intersections, William Walter Schenler Jan 1960

Evaluation Of Major Urban Intersections, William Walter Schenler

JTRP Technical Reports

No abstract provided.


Photogrammetric Measurement Of Final Pay Quantities In Highway Construction : Technical Paper, Russel R. Johnson, Robert Douglas Miles Jan 1960

Photogrammetric Measurement Of Final Pay Quantities In Highway Construction : Technical Paper, Russel R. Johnson, Robert Douglas Miles

JTRP Technical Reports

No abstract provided.


Design Of A Pressure Sensitive Cell And Model Studies Of Pressures In The Subgrade Of A Flexible Pavement System : Technical Paper, Thurmul Francis Mcmahon, Eldon J. Yoder Jan 1960

Design Of A Pressure Sensitive Cell And Model Studies Of Pressures In The Subgrade Of A Flexible Pavement System : Technical Paper, Thurmul Francis Mcmahon, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.


Design And Construction Of Hydraulic Flume And Backwater Effects Of Semi-Circular Constrictions In A Smooth Rectangular Channel : Progress Report No. 2, H. J. Owen Jan 1960

Design And Construction Of Hydraulic Flume And Backwater Effects Of Semi-Circular Constrictions In A Smooth Rectangular Channel : Progress Report No. 2, H. J. Owen

JTRP Technical Reports

No abstract provided.


Comprehensive Survey Of Sedimentation In Lake Mead, 1948-49, W. O. Smith, C. P. Vetter, G. B. Cummings, U.S. Bureau Of Reclamation Jan 1960

Comprehensive Survey Of Sedimentation In Lake Mead, 1948-49, W. O. Smith, C. P. Vetter, G. B. Cummings, U.S. Bureau Of Reclamation

Publications (WR)

Reservoirs are becoming an increasingly prominent feature of the American landscape. Built for flood mitigation and to change a fluctuating river into a dependable source of water for irrigation, power, and other purposes, they are predestined, like natural lakes, to be destroyed sometime following their creation. Sedimentation sooner or later robs most lakes and reservoirs of their capacity to store water. The significance of sedimentation in the life of Lake Mead, the largest artificial reservoir in the world, was realized when the plan for the reservoir was conceived, and an aerial survey of the floor was made in 1935 before …


Special Text, St 10-120-1, Quartermaster Intelligence: Organization And Procedures, December 1959, Robert Bolin , Depositor Nov 1959

Special Text, St 10-120-1, Quartermaster Intelligence: Organization And Procedures, December 1959, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

This is a textbook used at the Army Quartermaster School. In the 1950s, military schools related to one of the Army Technical Services were run by that service. Since the format and content of Army field manuals were often very similar to those of special texts, the same staffs often prepared both

The modern US Army vision of the technical intelligence developed during World War II. Shortly before World War II, Army Technical Services had been instructed to set up intelligence sections in the offices of their chiefs. The technical services were bureaus which supplied weapons, equipment, and services to …


Engineer Intelligence Guide 31, Production Of Cross-Country Movement Studies, December 1959, Military Geology Branch, Us Geographical Survey And The Soil Conservation Service, Us Department Of Agriculture, Robert Bolin , Depositor Nov 1959

Engineer Intelligence Guide 31, Production Of Cross-Country Movement Studies, December 1959, Military Geology Branch, Us Geographical Survey And The Soil Conservation Service, Us Department Of Agriculture, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

In 1958, the Army Corps of Engineers was responsible for the intelligence related to the surface of the earth, excluding the oceans and seas. Those responsibilities were discharged by subordinate organizations and contractors under the directions of the Intelligence and Mapping division. Engineer Intelligence Guides (EIGS) were prepared “to provide orientation, direction, and instruction in the field of Engineer intelligence.”

This guide was prepared to give instructions for preparing specialized maps containing information showing impediments to cross-country movement. Appendix I, an example of a CCM map, was created by adding an overlay on a sheet from the US Army Map …


Test 714: Case Model 610 (Diesel), Nebraska Tractor Test Lab Aug 1959

Test 714: Case Model 610 (Diesel), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


Test 713: Case Model 810 (Diesel), Nebraska Tractor Test Lab Aug 1959

Test 713: Case Model 810 (Diesel), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


Test 712: Case Model 1010 (Diesel), Nebraska Tractor Test Lab Aug 1959

Test 712: Case Model 1010 (Diesel), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …