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Articles 11431 - 11460 of 11779

Full-Text Articles in Engineering

Deformations And Bending Moments For A Building Slab With A Central Opening, Wu Ping-Yung Jan 1961

Deformations And Bending Moments For A Building Slab With A Central Opening, Wu Ping-Yung

Masters Theses

"The adaptability of the classical slope-deflection method analysis to the analysis of uniformly loaded building slab is the subject of this study. The paper demonstrates the use of slope-deflection in computing deflections and bending moments in uniformly loaded square building slabs both with and without central square openings. The results obtained are compared with results of other methods found by other investigators.

Numerous methods have been proposed for use in solving plate or slab problems. The exact solution in the form of a fourth order partial differential equation has proved to be of value in relatively few cases where boundary …


Effect Of Lime & Cement Additives On The Dynamic Modulus Of Elasticity Of A Clay Soil, Ismail Yolar Jan 1961

Effect Of Lime & Cement Additives On The Dynamic Modulus Of Elasticity Of A Clay Soil, Ismail Yolar

Masters Theses

"This thesis is a study to determine the values and characteristics of modulus of elasticity and the modulus of rupture of a clay soil stabilized with lime and cement in an effort to pave the way for including these values in design criteria.

The modulus of elasticity and the Poisson's ratio were obtained by sonic method. Specimens were broken in flexure for modulus of rupture. Experiments were performed with; (1) untreated soil, (2) soil with 4, 6, and 12 percent cement additive, (3) soil with a 3 percent lime additive and 0, 4, 6, and 12 percent cement additive, (4) …


A Study Of The Energy Dissipation And The Related Pressures And Velocities Of Cylindrical Tank Type Stilling Basin, Graham Wayne Wood Jan 1961

A Study Of The Energy Dissipation And The Related Pressures And Velocities Of Cylindrical Tank Type Stilling Basin, Graham Wayne Wood

Masters Theses

"In all hydraulic structures that hold back water, whether for the purpose of power, irrigation or flood control, all must have some means of dissipating the energy that is produced by the movement of the water from the pond or reservoir to the tailrace. The method of dissipation depends largely on downstream conditions, terrain and economics. The dissipator is to prevent scour and the undermining of the dam itself. The construction of any type dissipator should be the best one available for the least cost of construction. However, space limitations may dictate another type of dissipator. It has been recommended …


Use Of Light-Weight Steel Strapping As External Reinforcing To Concrete Beams, John O. Buchanan Jan 1961

Use Of Light-Weight Steel Strapping As External Reinforcing To Concrete Beams, John O. Buchanan

Masters Theses

"As a result of some recent failures in reinforced concrete construction throughout the United States, a study was made by several national authorities to find some remedial measures of strengthening existing structures without rebuilding. A system was developed, using high strength steel bands applied externally to beams, to act as stirrups, which has been highly successful. It not only greatly increased the strength of beams already in place but was used to repair members which had already failed.

The application of these bands was made under very exact specifications, using closely controlled procedures, with many physical refinements, in order to …


The Effect On Speed Of Speed Limit Signs On Suburban Arterial Streets, Curt M. Elmberg, Harold L. Michael Jan 1961

The Effect On Speed Of Speed Limit Signs On Suburban Arterial Streets, Curt M. Elmberg, Harold L. Michael

JTRP Technical Reports

No abstract provided.


A Study Of The Effects Of Aggregate Factors On Pavement Friction, Jack E. Stephens, William Harner Goetz Jan 1961

A Study Of The Effects Of Aggregate Factors On Pavement Friction, Jack E. Stephens, William Harner Goetz

JTRP Technical Reports

No abstract provided.


Jhrp-Ishd Cooperative Study Using Kneading Compactor And Hveem Stabilometer, Noel G. Gaudette, William Harner Goetz Jan 1961

Jhrp-Ishd Cooperative Study Using Kneading Compactor And Hveem Stabilometer, Noel G. Gaudette, William Harner Goetz

JTRP Technical Reports

No abstract provided.


A Method Of Evaluating Grading On Concrete Aggregates, Sandor Popovics Jan 1961

A Method Of Evaluating Grading On Concrete Aggregates, Sandor Popovics

JTRP Technical Reports

No abstract provided.


Significance Of Layer Deflections In Evaluating Flexible Pavements, Richard David Walker Jan 1961

Significance Of Layer Deflections In Evaluating Flexible Pavements, Richard David Walker

JTRP Technical Reports

No abstract provided.


Use Of Acceleration-Deceleration Lanes : Technical Paper, Neddy Costandy Jouzy, Harold L. Michael Jan 1961

Use Of Acceleration-Deceleration Lanes : Technical Paper, Neddy Costandy Jouzy, Harold L. Michael

JTRP Technical Reports

No abstract provided.


An Analysis Of Traffic Accidents On County Roads : Informational Report, Donald F. Petty Jan 1961

An Analysis Of Traffic Accidents On County Roads : Informational Report, Donald F. Petty

JTRP Technical Reports

No abstract provided.


Classification Of Wisconsin Ground Moraine By Airphoto Interpretation, Wesley P. James Jan 1961

Classification Of Wisconsin Ground Moraine By Airphoto Interpretation, Wesley P. James

JTRP Technical Reports

No abstract provided.


Cooperative Soil Mapping Projects In Indiana : Technical Paper, Robert Douglas Miles, Walter T. Spencer Jan 1961

Cooperative Soil Mapping Projects In Indiana : Technical Paper, Robert Douglas Miles, Walter T. Spencer

JTRP Technical Reports

No abstract provided.


Some Concepts On The Use Of Deflection Measurements For Evaluating Flexible Pavements : Technical Report, Richard David Walker, Eldon J. Yoder Jan 1961

Some Concepts On The Use Of Deflection Measurements For Evaluating Flexible Pavements : Technical Report, Richard David Walker, Eldon J. Yoder

JTRP Technical Reports

The use of the methods and the devices (CTL and MRP) are extended to measure moisture content of soil for various other geotechnical purposes. Laboratory compaction mold and Shelby tubes serve as CCs where density are measured using conventional methods


Statistical Analysis Of Soil Variability, Delon Hampton Jan 1961

Statistical Analysis Of Soil Variability, Delon Hampton

JTRP Technical Reports

No abstract provided.


Studies Of Highway Impact In Indiana: Progress Report No. 3, A Study Of Partial Takings For A Portion Of Interstate 65, Joseph A. Fletcher Jan 1961

Studies Of Highway Impact In Indiana: Progress Report No. 3, A Study Of Partial Takings For A Portion Of Interstate 65, Joseph A. Fletcher

JTRP Technical Reports

No abstract provided.


The Effect On Speed And Accidents Of Improved Delineation At Three Hazardous Locations : Technical Paper, L. D. Powers, Harold L. Michael Jan 1961

The Effect On Speed And Accidents Of Improved Delineation At Three Hazardous Locations : Technical Paper, L. D. Powers, Harold L. Michael

JTRP Technical Reports

No abstract provided.


A Theory Of Traffic Flow For Evaluation Of The Geometric Aspects Of Highways, Milton Edward Harr, G. A. Leonards Dec 1960

A Theory Of Traffic Flow For Evaluation Of The Geometric Aspects Of Highways, Milton Edward Harr, G. A. Leonards

JTRP Technical Reports

No abstract provided.


A Study Of The Inlet Characteristics And Entrance Losses Of Pipe Culvert With A Flush Mounted, Sharp Edged Inlet, Luke Lea Callaway Jr. Jan 1960

A Study Of The Inlet Characteristics And Entrance Losses Of Pipe Culvert With A Flush Mounted, Sharp Edged Inlet, Luke Lea Callaway Jr.

Masters Theses

"Of all hydraulic structures, culverts are by far the most numerous. Lack of understanding of the functioning of culverts has resulted in many of them being implaced improperly and as a result, they function with less efficiency and at reduced capacity. Much has been written regarding the flow of water in open channels, culverts included, but little has been done regarding inlet conditions. It is necessary in the design of culverts, as with any other structure, that conditions which govern the operation of the structure be established. This paper is a study of the inlet conditions of a circular cross …


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.


A Method Of Design For Spiral Reinforced, Eccentrically Loaded, Concrete Columns, Lloyd O. Senter Jan 1960

A Method Of Design For Spiral Reinforced, Eccentrically Loaded, Concrete Columns, Lloyd O. Senter

Masters Theses

"This thesis presents a method of designing spiral reinforced, eccentrically loaded, concrete columns on the basis of the 1957 American Association of State Highway Officials specifications.

Equations from AASHO, in conjunction with equations derived in this thesis, are programmed for and solved by the IBM 650 digital computer. The data obtained from the computer is plotted such that, given the normal load and moment on a column, the minimum required area or reinforcing steel may be read directly from the graph.

The derivation or equations, the computer program, and the graphs are included in the thesis"--Introduction, page 1.


The Conducting Sheet Analogy For Laplace And Poisson Equations, Ronald Edward Volker Jan 1960

The Conducting Sheet Analogy For Laplace And Poisson Equations, Ronald Edward Volker

Masters Theses

"This investigation determined the accuracy to be expected with conducting sheet analogy solutions for Laplace and Poisson equations using simple and relatively inexpensive instrumentation. Several problems were solved experimentally and compared to known theoretical solutions to check variables in the technique and the accuracy of the experimental solution. It was found that if proper procedures are followed, solutions can be obtained rather rapidly and with an error of less than 5% which compares favorably with accuracy obtained by other investigators with more complex, precise equipment"--Abstract, page 2.


Effect Of A Lime-Cement Additive On The Physical Properties Of A Podzolic Clay Soil, Raymond H. Frankenberg Jan 1960

Effect Of A Lime-Cement Additive On The Physical Properties Of A Podzolic Clay Soil, Raymond H. Frankenberg

Masters Theses

"The object of this research is to obtain data and information from laboratory tests concerning the effect of combined lime and cement additives on the physical properties of illitic clay soils"--Introduction, page 3.


The Evaluation Of The Influence Of Large Aggregate On The Permeability Of Single-Grained Soils, Edward Clayton Grubbs Jan 1960

The Evaluation Of The Influence Of Large Aggregate On The Permeability Of Single-Grained Soils, Edward Clayton Grubbs

Masters Theses

"Each year many earth fill structures are designed and built with the primary purpose of impounding water. As these structures are only relatively impervious, engineers must consider the control of seepage in design. In order to predict seepage, the engineer must have knowledge of the potential flow or water through the earthen structure. He is, therefore, faced with the problem of determining a coefficient of permeability for use in design calculations.

The coefficient of permeability is easily enough determined for fine-grained materials. However, in construction it is very rare to find proper fill material which does not include quite a …


Properties Of Air-Entrained Concrete At Early Ages, Ugur Ozoguz Jan 1960

Properties Of Air-Entrained Concrete At Early Ages, Ugur Ozoguz

Masters Theses

"This study, entitled "Properties of Air-Entrained Concrete at Early Ages" concerns a group of tests designed to provide quantitative information regarding the effect of entrained air on the strength and durability of concrete before it reaches its 28 day strength.

Experiences in the field and laboratories have demonstrated that the addition of a moderate amount of air to any concrete mix will bring a marked increase in resistance to the disintegrating effects of freezing and thawing.

There have been extensive studies made on the subject of durability of air entrained concrete. Most of these studies were based on the effect …


Effects Of Co2 On The Strength Of Lime Treated Clay Soil, Tuncer Karakurt Jan 1960

Effects Of Co2 On The Strength Of Lime Treated Clay Soil, Tuncer Karakurt

Masters Theses

“A large number of the difficulties encountered in highway work are due to the variable nature of soils. In addition to its variable nature, soil is a difficult material to deal with because of the complexity of its physical and chemical properties. From prehistoric times the construction of a satisfactory foundation has been one of the greatest problems facing the engineer and builder. Even though the needs of scientific methods were necessary far earlier, the study of soils as a construction material was scientifically given attention to only during the last three decades. Soil science being so young there are …


Effect Of Leaching On The Strength Properties Of A Hydrated Lime-Cement Stabilized Soil., Yurdakul Osman Ulugonul Jan 1960

Effect Of Leaching On The Strength Properties Of A Hydrated Lime-Cement Stabilized Soil., Yurdakul Osman Ulugonul

Masters Theses

"The stabilization of soil has been carried on since early historic times. The Romans used lime and volcanic ash as additives for this purpose. After the discovery of cement and its property of bonding soil particles it became one of the essential additives in the soil stabilization field. Many other kinds of additives have been developed and are being used today for soil stabilization.

A question that arises through the increasing use of stabilizers in soil is whether the changes that are effected are of a temporary or permanent nature. Changes may occur from the degradation of the stabilized soil …


A Study Of The Feasibility Of Stabilizing Putman Soil With Hydrated Lime And Portland Cement In Combination, John Henry Kern Jan 1960

A Study Of The Feasibility Of Stabilizing Putman Soil With Hydrated Lime And Portland Cement In Combination, John Henry Kern

Masters Theses

"This paper is the report of a feasibility study of the combined use of hydrated lime and portland cement to stabilize the troublesome Putnam soil of northern Missouri. In its natural state, this soil is highly plastic, possesses great shrinkage and swell characteristics when the moisture content is changed and is classified as an A-7-5 soil by the A. A. S. H. O. Standards for the Classification of Highway Subgrade Materials.

During the course of this investigation, the following tests were performed: (1) Moisture-Density Relationships for soil with admixtures; (2) Triaxial Compression Test; (3) Unconfined Compression Tests; (4) Freeze-Thaw Tests; …


A Study Of The Reaction Of Hydrated Lime With Pure Clay (Kaolin) In Clay Stabilization, Chiyyarath Velayudhan Girijavallabhan Jan 1960

A Study Of The Reaction Of Hydrated Lime With Pure Clay (Kaolin) In Clay Stabilization, Chiyyarath Velayudhan Girijavallabhan

Masters Theses

"The work presented is the investigation of the reaction of pure Kaolinite clay with hydrated lime in clay stabilization. Pure Kaolin clay, ranging from one micron to five microns in size, was mixed with calcium hydroxide in the form of a paste. These mixtures were permitted to react for varying periods of time. An attempt was made to separate the lime from clay lime mixture by density separation using a mixed solution of carbon tetrachloride and tetrabromoethane. Since the above method failed because of the formation of a yellow gelatinous suspension, the lime was removed by washing the clay lime …


Investigation Of Economic Design Procedure For A Rigid Frame, Richard S. Groner Jan 1960

Investigation Of Economic Design Procedure For A Rigid Frame, Richard S. Groner

Masters Theses

"This work presents an analysis of various arrangements of component parts of a rigid frame. From this analysis a procedure is indicated for a logical choice of member sizes for a first trial selection of a frame for given loading conditions. The first trial solution yields a frame which is in the range of an economical design"--Abstract, page 2.