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Articles 11461 - 11490 of 11795

Full-Text Articles in Civil and Environmental Engineering

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 …


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.


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 …


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.


Deflections Of Two-Way Slabs, Gerald C. Godzwon Jan 1960

Deflections Of Two-Way Slabs, Gerald C. Godzwon

Masters Theses

"A reinforced concrete member is by no means a truly elastic member, hence all ordinary deflection calculations relating to it, whichever method, are approximate. By the use of model study actual reinforced concrete slab models, of different end conditions, were built and tested for deflections under uniform loadings. Theoretical and actual deflection of reinforced concrete slabs are compared. The results of these tests indicate that the theoretical deflection equations may be 60 to 80 percent in error when applied to reinforced concrete slabs"--Abstract, page 2.


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.


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 …


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 …


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.


The Plastic Design Of Steel Cofferdam, Robert O. Disque May 1959

The Plastic Design Of Steel Cofferdam, Robert O. Disque

Theses

The fundamental purpose of this thesis is to employ the plastic theory in the design of a hypothetical steel sheet pile cofferdarm. Prior to undertaking this work, the author had had no previous experience with the plastic theory. Therefore, a portion of this thesis is devoted to the development of the fundamentals necessary for the actual design computations.

The theory of plastic analysis has been used as far back as the 1920's in Hungary for the structural design of apartment buildings. It is, however, only in recent years that the theory has been utilized to a significant degree in this …


Design Of Vierendeel Trusses, Richard Denis Pearson Jan 1959

Design Of Vierendeel Trusses, Richard Denis Pearson

Masters Theses

"The Vierendeel Truss, or Rigid Frame Truss, was first introduced by Professor Arthur Vierendeel in Belgium at the beginning of the century. The Vierendeel Truss differs from the more common triangulated truss in that it contains no diagonal members. The members of the truss are joined rigidly together and each member is required to transmit bending, shear and direct stress.

Professor Vierendeel claimed that Vierendeel Trusses are 20 to 30 percent cheaper than the conventional type of truss. This statement has been challenged by many who believe that this type of truss is fundamentally inferior to the more conventional type. …


Field Application Of The Membrane Filter Method For Bacteriological Quality Determination Of Water, Charles Liston Gambill Jan 1959

Field Application Of The Membrane Filter Method For Bacteriological Quality Determination Of Water, Charles Liston Gambill

Masters Theses

"The purpose of this thesis is to demonstrate the definite advantages to be realized when using the membrane filter method as an accepted procedure for the bacteriological analysis of a water; and specifically when used under emergency or field conditions such as military units in the field. These same advantages would apply to Civil Defense and other such agencies when operating under emergency or field conditions.

Data from actual tests showing techniques, equipment and procedures used and augmented by other data available from research papers will be utilized"--Introduction, page 2.


The Effects Of Fly-Ash On Dynamic Modulus Of Elasticity Of A Concrete Mortar, Bill L. Atchley Jan 1959

The Effects Of Fly-Ash On Dynamic Modulus Of Elasticity Of A Concrete Mortar, Bill L. Atchley

Masters Theses

"Over the last few years an increasing amount of interest has been shown in the use of prestressed concrete. As is true in many new methods of design or construction, the properties of existing materials to be used sometimes fail to meet all the desirable characteristics, and certain modifications might be advantageous. This is certainly true of prestressed concrete design and construction, in which a lower modulus of elasticity accompanied by a minimum loss in strength would be desirable. If a lower modulus of elasticity could be obtained for concrete, a lower prestressing load could be used and still maintain …


Stabilization Of Swelling Clay Soil By Additions Of Calcium Hydroxide And Calcium Oxide, Anthony Diler Jan 1959

Stabilization Of Swelling Clay Soil By Additions Of Calcium Hydroxide And Calcium Oxide, Anthony Diler

Masters Theses

"As a study of all types of stabilization would be very lengthy, it was decided to make the object of this research the determination of the effect of the addition of different percentages of calcium oxide (CaO) and calcium hydroxide Ca(OH)2 on the physical characteristics of a silty swelling sodium montmorillionite clay. The purpose of this addition is to flocculate the clay by utilizing a base exchange between the sodium and calcium ions, and thus change the physical characteristics of the soil. The soil by itself has the characteristics of a fat clay, that is it can be broken …


Design Of Plain Concrete Runways And Taxiways Of A Class 4 Airport, Erkmen Erkmen Jan 1959

Design Of Plain Concrete Runways And Taxiways Of A Class 4 Airport, Erkmen Erkmen

Masters Theses

"This thesis is a study for determining the most economical design for the pavements of Adana Airport. It is a study of redesigning efficient and safe runways and necessary taxiways for a future service life of thirty years.

Adana is Turkey’s 6th largest city. It is a growing city. An airport in Adana also serves tor industrial purposes, serves for transcontinental airway systems. In Adana there is an important Nato Base and in a future war such an airport can be used for military purposes. For these reasons, it was decided to construct a class 4 airport* for the city. …