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Articles 39151 - 39180 of 39805

Full-Text Articles in Civil and Environmental Engineering

"Experience In Activating A Master County Road System", E. C. Rogers Mar 1950

"Experience In Activating A Master County Road System", E. C. Rogers

Kentucky's Annual Forum on Transportation

No abstract provided.


Some Aspects Of Atomic Energy, W. S. Webb Mar 1950

Some Aspects Of Atomic Energy, W. S. Webb

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky's Rural Highway Program, Emerson Beauchamp Mar 1950

Kentucky's Rural Highway Program, Emerson Beauchamp

Kentucky's Annual Forum on Transportation

No abstract provided.


"Responsibility Of The Engineer In The Field", John A. Keck Mar 1950

"Responsibility Of The Engineer In The Field", John A. Keck

Kentucky's Annual Forum on Transportation

No abstract provided.


Municipal Problems, N. W. Neel Mar 1950

Municipal Problems, N. W. Neel

Kentucky's Annual Forum on Transportation

No abstract provided.


State, County, And Municipal Roads In A Balanced Highway System, W. P. Curlin Mar 1950

State, County, And Municipal Roads In A Balanced Highway System, W. P. Curlin

Kentucky's Annual Forum on Transportation

No abstract provided.


Address [1950], Robert B. Brooks Mar 1950

Address [1950], Robert B. Brooks

Kentucky's Annual Forum on Transportation

No abstract provided.


Each County Needs A Qualified County Road Engineer, Brady Stewart Mar 1950

Each County Needs A Qualified County Road Engineer, Brady Stewart

Kentucky's Annual Forum on Transportation

No abstract provided.


"Balancing Expenditure For Grading, Draining And Surfacing", L. C. Pendley Mar 1950

"Balancing Expenditure For Grading, Draining And Surfacing", L. C. Pendley

Kentucky's Annual Forum on Transportation

No abstract provided.


"The Importance Of Adequate Right Of Way For Rural Road Improvement", R. D. Thompson Mar 1950

"The Importance Of Adequate Right Of Way For Rural Road Improvement", R. D. Thompson

Kentucky's Annual Forum on Transportation

No abstract provided.


Welcoming Address [1950], Leo M. Chamberlain Mar 1950

Welcoming Address [1950], Leo M. Chamberlain

Kentucky's Annual Forum on Transportation

No abstract provided.


Acknowledgement [1950], Kentucky Transportation Center Mar 1950

Acknowledgement [1950], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Supplemental Report On Unit Weight Of Aggregates, S. T. Collier Mar 1950

Supplemental Report On Unit Weight Of Aggregates, S. T. Collier

Kentucky Transportation Center Research Report

No abstract provided.


An Installation Of An Experimental Joint For Concrete Pavements, Harvey J. Field Jr. Feb 1950

An Installation Of An Experimental Joint For Concrete Pavements, Harvey J. Field Jr.

Kentucky Transportation Center Research Report

The experimental joint described in this paper involves the use of a new type load transfer set-up which was developed by the Oxford Manufacturing Company, Oxford, Indiana, and produced by the Reynolds Metals Company. The producers designed this apparatus on the assumption that the present joints used in concrete pavement construction are not adequate. For example, from the standpoint of load bearing, the dowel bars which theoretically carry the load from one slab to the other are not sufficient in that the very shape of the bars (circular) allows only a limited bearing surface. In order to eliminate the rusting …


Determination Of Unit Weights Of Aggregates In The Laboratory And At The Source, S. T. Collier Feb 1950

Determination Of Unit Weights Of Aggregates In The Laboratory And At The Source, S. T. Collier

Kentucky Transportation Center Research Report

As a result of meetings with producers, a committee of Highway Department engineers recommended that a study be made of various type of aggregates from statewide sources; the objective being to arrive at a standard of evaluating unit weight of aggregates of various but commonly recognized characteristics. It was further desired that a factor be determined which could be applied to a given aggregate for computing its unit weight with reasonable accuracy; taking cognizance of specific gravities and densities as influenced by particle shapes and gradation.


Field Resolution Tests With The Metrogon Lens, Robert Greig Livingston Jan 1950

Field Resolution Tests With The Metrogon Lens, Robert Greig Livingston

Professional Degree Theses

"The first portion of this treatise is devoted to a compilation of general knowledge concerning photographic resolution testing - an explanation of certain optical terms; the drafting of resolution targets; methods for averaging resolution values, measured at various positions on the format, to obtain one over-all value for an exposure; and a description of the factors involved in conducting the photographic operations. In the second part of the paper, analyses of the results obtained from line-target resolutions are made with the purpose of determining those combinations of aperture, filter, and shutter speed which result in high photographic resolutions. This information …


An Application Of Skew Frequency Curves To River Stages, Vernon A. C. Gevecker Jan 1950

An Application Of Skew Frequency Curves To River Stages, Vernon A. C. Gevecker

Professional Degree Theses

"Floods have occurred in the past and will occur again in the future. References to floods are incorporated in some of the early writings of man. Unfortunately though man has recorded the event, he has seldom recorded facts whereby it is possible to determine the volume of flow or the height to which the water rose. Where man has recorded the height to which water rose, much data such as channel conditions, vegetation coverage on the flood plain, etc., remains vague or unknown.

It has been only in comparatively recent times with the advent of the steamboat that man has …


Prefabricated Neoprene Joint Sealer, A. C. Peed Jr. Jan 1950

Prefabricated Neoprene Joint Sealer, A. C. Peed Jr.

Kentucky Transportation Center Research Report

On November 18, 1948, the assembly of joints with prefabricated neoprene sealers was demonstrated by representative of the Lastite Joint Company, 105 W. Madison Street, Chicago 2, Illinois, on the construction project on U.S. 27, about 5 miles south of Alexandria. Installation was not possible at that time due to the fact that the contract was temporarily without cement.

Installation was made on November 30, 1948, under the supervision of a representative of the company. This installation was not completely satisfactory due to the inexperience of the paving crew with this type of joint. The joint at Station 622÷22 was …


Relative Productive Value Of Land, Karl Harris, Vaughn E. Hansen Jan 1950

Relative Productive Value Of Land, Karl Harris, Vaughn E. Hansen

Reports

Location, markets, hard surface roads and other transportation facilities, churches, taxes, schools, and utilities are major factors in the monetary value of land, yet these things do not contribute to the land’s productivity. In this bulletin the only factor considered in determining the agricultural value of land is its productive capacity.

The three major factors in the productive value of land are water, climate, and soil.

These three factors are the principal ones in crop production. If any one of them is unfavorable to plant growth, it can inhibit or even prevent plant growth regardless of how favorable the other …


The Effect Of Pressure Prehydration On The Strength Of Hydraulic Cement Concrete, Thomas Holmes Whitfield Jr. Jan 1950

The Effect Of Pressure Prehydration On The Strength Of Hydraulic Cement Concrete, Thomas Holmes Whitfield Jr.

Masters Theses

"It appears that the rapidity of curing and the degree or ultimate strength of concrete can be influenced by both chemical and physical factors. The main function of the physical factors involved seems to be the creating of a more intimate combination of the cement and water which are the active ingredients. For example, finer grinding of the cement would present more surface area to the water; the application of heat would decrease the amount of surface tension of the water, in addition to speeding the chemical reaction, steam under pressure would force water into the porous particles of cement; …


Effects Of Sand Admixtures On The Physical Properties Of Soils, Necati Kanatsiz Jan 1950

Effects Of Sand Admixtures On The Physical Properties Of Soils, Necati Kanatsiz

Masters Theses

"The purpose of this study is to determine the effects of sand admixtures on the physical properties of soils. Soil may be defined as a heterogenous [sic] collection of rock and mineral fragments whose decomposition and disintegration have been brought about by the action of physical, chemical, and biological forces, working singly or in combination...In the conviction that the study of soils, with respect to highway engineering, is becoming more and more important this study was undertaken in order to learn whether the addition of sand would lead to desirable results, and if not, at least secure some further addition …


Effect Of Removed Web-Section On Critical Load For I-Beam Columns, Henri Simon Rigo Jan 1950

Effect Of Removed Web-Section On Critical Load For I-Beam Columns, Henri Simon Rigo

Masters Theses

"This investigation deals with a series of column tests of aluminum I-sections which have a perforated web. Specifically, the tests show that the weight is decreased without decrease in strength. Several basic assumptions are made in the design of a column. The physical action of a column is idealized in the derivation of formulae which will predict within reasonable limits the load which the member will sustain. In a given installation of non-homogeneity of material, kinks, uneven bearing, lack of symmetry due to riveting or welding, stress concentration and many other disturbing factors not in agreement with these assumptions may …


Flood Control With Retarding Basin Type Reservoirs In Meramec Basin, Missouri, Ilhan Kaya Ozbilen Jan 1950

Flood Control With Retarding Basin Type Reservoirs In Meramec Basin, Missouri, Ilhan Kaya Ozbilen

Masters Theses

"When rainfall occurs that provides more runoff than can be carried within the normal channels of existing streams a flood results. The excess water overflows the valley lands, invades developed areas, and causes destruction of property or, in extreme cases, loss of human life...Many structures are built to control water: Waterways of proper depth and width provide arteries of transportation; water controlled and discharged through water-wheels provides power; water may be caught in storage basins and distributed for irrigation or water supply; and water that is an actual or potential source of damage or danger to property or to human …


The Precipitation-Runoff Relationship On The Grand River Basin Of Missouri And Iowa, J. Kent Roberts Jan 1950

The Precipitation-Runoff Relationship On The Grand River Basin Of Missouri And Iowa, J. Kent Roberts

Masters Theses

"In the study of a drainage basin which is to be utilized for water supply or water power, there is frequently a dearth or complete lack of runoff data, though precipitation data are almost always available. The Water Resources Branch of the United States Geological Survey maintains gaging stations on various streams and runoff records from these streams are available from their publications and offices. Many of these runoff records cover a considerable number of years, and are entirely sufficient for use in an analysis of any drainage basin covered by such data. Some of these gaging stations have not …


A Comprehensive Traffic Survey Of Phelps County, Missouri, Clifford D. Muir Jan 1950

A Comprehensive Traffic Survey Of Phelps County, Missouri, Clifford D. Muir

Masters Theses

"The purpose of this study is two fold. The first of these purposes is to serve as a pattern or guide for any county or township wishing to conduct a comprehensive traffic survey. The second purpose of this study is to provide traffic classification and other data on a typical county system of rural roads. Today, many counties in the United States are faced with the problem of inadequate roads, due to the modernization of the American farm. While they realize this problem exists, may county governments have developed no organized method of studying and determining their needs...When the author …


Effects Of Wave Action Upon The Design Of The Breakwater For Istanbul Harbor, Melih Suat Durusan Jan 1950

Effects Of Wave Action Upon The Design Of The Breakwater For Istanbul Harbor, Melih Suat Durusan

Masters Theses

"The city of Istanbul is situated on the southern entrance of the Bosphorus which separates Asia from Europe; at the same time it is the only strait that leads to the Black Sea. Istanbul is the city that connects Europe-Asia highways and railways. These features show that Istanbul is a very important port. The Golden Horn and the southern end of the Bosphorus constitute a natural harbor which has been in use for many years. Although the natural harbor has served its purpose in the past, the present conditions necessitate the presence of a new harbor...One economical method of improving …


Economical Span Length Ratios For Three-Span Continuous Girder Bridges, Donald Hindrik Timmer Jan 1950

Economical Span Length Ratios For Three-Span Continuous Girder Bridges, Donald Hindrik Timmer

Masters Theses

"The three-span continuous bridge is one of the most popular bridges used by highway departments at the present time. The low first cost and overall economy combined with the pleasing appearance of this type of bridge as compared to simple span structures has led most highway departments to use continuous spans whenever conditions permit. The design of three-span continuous bridges, as well as the design of any of the other bridge types, is usually carried out as an analysis rather than a design. In the case of the three-span continuous girder, with rolled steel beams, an initial assumption as to …


The Economic Spacing Of Contraction Joints In Reinforced Concrete Pavements, Wilbert Frederick Wegener Jan 1950

The Economic Spacing Of Contraction Joints In Reinforced Concrete Pavements, Wilbert Frederick Wegener

Masters Theses

"Structurally, there are two types of joints used in concrete pavements: (a) the tied, or permanently-closed joint; and (b) the open or free type of joint. The permanently closed joint utilized tie-steel of some form to keep the joint from opening. Usually, this steel is in the form of short individual bars extending across the joint and bonded to both slabs (designated as "tie-bars") or in the form of distributed reinforcement. The remaining method of classification, that of refering [sic] to the joint purpose, gives the expansion joint, contraction joint, and warping joint. An expansion joint is, as the name …


The Study Of Effect Of Definite Grain Sized Sand On The Shearing Strength Of Clays, Faruk Omer Akkoseoglu Jan 1950

The Study Of Effect Of Definite Grain Sized Sand On The Shearing Strength Of Clays, Faruk Omer Akkoseoglu

Masters Theses

"Slopes of all kinds, including mountains, hills, sea coast bluffs, river banks, and man made cuts and fills, stay in place only because of the shearing strength possessed by the soil or rock of which they are composed. The resistance of soils to shearing strength is probably the most important of all the soil properties to foundation engineers. Most of the serious structural failures which are due to unexpected soil behaviour are caused by deficiency in the shearing strength of the soil. Water, on the other hand, possesses no static strength in shear, therefore bodies of water have no surface …


The Theory Of Limit Design As Applied To Column Analysis, John Francis Mccarthy Jan 1950

The Theory Of Limit Design As Applied To Column Analysis, John Francis Mccarthy

Masters Theses

"In any discussion of compression members of a structure, account has to be taken primarily of the relative "slenderness" or bending weakness of the member. If the member be so short that axial loading causes very slight deflection at any point throughout the member, it is usually designated a simple compression member and no account is taken of the additional stresses due to the deflection. When, however, the ratio of the length to the least radius of gyration of the member becomes so large that bending stresses cannot be ignored, the member is usually called a column and its consequent …