Engineering Commons^™

Fourth Annual Performance Survey Of Reinforced Concrete Pipe Culverts, Ronald D. Hughes

Kentucky Transportation Center Research Report

A stylized, rational criterion for the structural design and installation of reinforced concrete pipe culverts was developed by the Bureau of Public Roads in cooperation with Prof. M. G. Spangler of Iowa State College and the American Concrete Pipe Association and was distributed to the various state highway agencies, April 4, 1957, as Circular Memorandum 22-40.* The criterion was intended to bring together and simplify methods for computing the strengths required for various fill heights and conditions of bedding. The several highway agencies were urged to adopt the criterion for use on all Federal-aid projects and accordingly, the Kentucky Department …

Test 864: Wagner Fwd Wa4 (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 862: Minneapolis-Moline U302 (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 …

Test 867: Zetor 4011 (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 865: Case 750 (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 …

Calibration Of Irrigation Headgates By Model Analysis, Gaylord V. Skogerboe, Vaughn E. Hansen

Reports

Introduction

The purpose of this research project was to calibrate the slide gates used by the D.M.A.D. Company (Delta, Melville, Abraham and Deseret Irrigation Companies). These gates, which number more than 600, are located throughout the distribution system. Each gate is placed in a concrete box 4 feet wide, 3-1/2 feet deep and 4 feet long. The structure is used as a means of diverting the water and is also used as a measuring device.

A similar structure, but with a different type of slide gate, was calibrated in 1914. At the time rating tables were prepared which listed the …

Radiation Characteristics Of A U-Slot Antenna., Richard Paul Brueggemann

Masters Theses

"The radiation equations for a simple rectangular slot antenna are derived as a function of the field distribution in the slot. The electric field distribution in the slot is then formulated as a function of the aperture dimensions. The U-shaped slot antenna is described as an extension of the rectangular slot theory and the actual field is measured in the slot for comparison.

The far field equations a.re derived for the U-slot antenna similar to those for the rectangular slot antenna and are evaluated using the formulated distributions in the slot for antennas of two different electrical sizes. The equations …

The Importance Of Radiation As A Means Of Controlling Surface And Internal Temperatures Of A Semi-Infinite Solid, Kenneth C. Woodruff Jr.

Masters Theses

"This problem is concerned with the temperature history of a semi-infinite solid bounded by one flat surface.

Heat was applied by convection from a hot fluid to the flat surface of the solid which was originally at a uniform temperature. Heat was radiated from the flat surface to black space and conducted into the solid according to Fourier's law. The temperature at the surface, and at several points beneath the surface, was determined as a function of time.

A method for solution of such a problem is demonstrated here by the use of numerical analysis and the Royal McBee LGP …

Test 868: Case 1200 (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 …

Highway Impact Studies: Impact Of Lebanon By-Pass, 1950 To 1963 : Progress Report, Ronald Jerome Hensen, Harold L. Michael, Judson Stillman Matthias

JTRP Technical Reports

No abstract provided.

Analysis Of On-Ramp Capacities By Monte Carlo Simulation And Queuing Theory, Robert Frank Dawson

JTRP Technical Reports

No abstract provided.

Test 873: Oliver 1650 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 874: Oliver 1650, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 875: Oliver 1850, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 869: Oliver 1850 Diesel 4wd, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 871: Oliver 1950 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Crossings For Channels And Drains In The Ord River Area, K S. Cole

Journal of the Department of Agriculture, Western Australia, Series 4

ON farms irrigated by surface methods it is essential to provide crossings over channels and drains.

These crossings must be wide and strong enough to take the biggest farm machinery.

Analysis Of Space Frames By Moment Distribution., Ting-Hwa Wang

Masters Theses

"This work presents an analysis of space frames and planar frames loaded in different planes by the method of moment distribution and the theory of superposition. From this analysis it is found that the torsional stiffness of frame members has a great effect on the final bending moments when twisting moments are applied to the frame. The analysis of space frames considering the forces, stresses, and moments in all three dimensions always yields a design more accurate and economical in material than the traditional planar frame analysis"--Abstract, p. i

Investigation Of Zero Sidesway For Rigid Frames, Dolatray S. Mehta

Masters Theses

"This study was made to determine the location of a point at which a vertical load may be applied to a rigid frame structure and produce zero sidesway, the so called zero sidesway axis. For concentrated loads equations have been derived for zero sidesway. For uniform and triangular loads graphs showing zero sidesway for various ratios of column and beam stiffnesses and height ratios have been plotted"--Abstract, page ii.

Synthesis Of Unity-Gain Rc Networks From Second Degree Transfer Functions., Ronald L. Mcnally

Masters Theses

"A synthesis procedure is presented which realizes second order open circuit transfer functions. This procedure is developed using parallel networks. The transfer functions for each parallel network are obtained by use of separation parameters. Two constraints are used in the development: first, the realized network must be an RC network; second, the desired multiplicative gain constant must be realized. With these constaints a parameter space is developed which aids in the selection of the proper parallel networks to be combined. Necessary and sufficient conditions are developed which are used to test the transfer functions. The realization simply consists of the …

Influence Of The Heat Release On Thermodynamic Characteristics Of Diesel Engines., Shirish Amritlal Desai

Masters Theses

"A Diesel. engine is an internal. combustion engine in which the fuel. is ignited by the heat of compression. Thus, the Diesel. engines are known as compression-ignition (C.I.) engines. The engine received its name: from its inventor, Dr. Rudolf Diesel., who in 1893 published a book under the title, '' Theory and Construction 0£ Rational. Diesel Engine". The first successf'u1 Diesel. engines, using liquid: fuel., which was injected into the cylinder by a blast of high-pressure air, were manufactured by the M.A.N. Company of Germany in 1895"-- Introduction, p. 1

The Effect Of Gap Graded Aggregate On The Properties Of Hot Mix Asphaltic Concrete, Maurice L. Northcutt

Masters Theses

"The objective of this investigation was to determine the effects of deviations from the recommended gradation of aggregate upon asphalt concrete mixes. The aggregate used in this study was a good grade Missouri Limestone and was mixed with an asphalt cement of 85-100 penetration grade. A control mix was designed in accordance with the Marshall Method using a gradation recommended by the Asphalt Institute. Ten aggregate blends were prepared by wasting certain fractions or combinations of fractions and the wasted weights were redistributed into the coarser or finer aggregate sizes. The test mixes were designed using the same method and …

The Prediction Of The Viscosity Of Multi-Component Non-Polar Gaseous Mixtures At Atmospheric Pressure., Gary D. Fehsenfeld

Masters Theses

"The applicability of the Strunk, Custead, and Stevenson method for predicting the viscosities of multicomponent, non-polar, gaseous mixtures vas investigated. The viscosities of 24 ternary and quaternary gaseous mixtures were experimentally determined, at 3 temperature levels, and compared with the corresponding calculated viscosities resulting from the prediction method. In addition, the published viscosities of 64 multicomponent mixtures were compared with the corresponding calculated viscosities.

Altogether, the viscosities of 136 multicomponent, non-polar, gaseous mixtures were compared. The mixtures contained from 3 to 7 components including 16 different gases in the temperature range from 5• to 1014 ° c, and at a …

Test 863: Minneapolis-Moline U302 (Lpg), 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 866: Zetor 2011 (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 870: Oliver 1850 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 872: Oliver 1950 Diesel 4wd, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 876: Oliver 1850 4wd, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

The Submerged Culture Of Thiobacillus Thio-Oxidans In A Pilot Scale Fermentor, Edward Hibbert Crum

Masters Theses

"A strain of Thiobaci.llus thiooxidans was isolated from a West Virginia coal mine drainage. This strain was characterized by its production of sulfuric acid in shake flasks. The strain was also compared with a pure culture of h thiooxidans obtained from the American Type Culture Collection (ATCC number 8085).

The strain was grown in submerged culture in a 16-liter pilot scale fermenter. Two aeration systems, air and air enriched with carbon dioxide, were examined. The air enriched with carbon dioxide gave a much more rapid growth rate. The culture reached the mid-log phase of growth after 80 hours of incubation …

Investigation Of Inoculant Effect On Cast Iron, Darrell W. Donis

Masters Theses

"An assumption was made that extensive holding time of an inoculated gray iron melt would result in a loss of physical properties of castings poured from this melt. This theory was examined in both a literature search and by testing and conclusions drawn from these findings are presented and discussed. Although there is a great deal of data available which discusses inoculants and their effects, very little mention is made of the effect of holding time in any of this material. The results indicate that holding time is of considerable importance when dealing with inoculated iron, and that calcium silicon …