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Articles 11401 - 11430 of 11795

Full-Text Articles in Civil and Environmental Engineering

Gathering Haunch Design Data By Photoelasticity, Richard B. Heagler Jan 1962

Gathering Haunch Design Data By Photoelasticity, Richard B. Heagler

Masters Theses

"The haunching of beams and columns and the haunching of rigid frames is performed by design engineers for the purpose of relieving stress concentrations that might occur at discontinuities in structures. The haunch performs this relieving of stress concentration by increasing the rigidity of the structure at regions of high stress. Usually this design step is one of trial and error; that is, the engineer will select a haunch or method of haunching and then check to see if the result is sufficient for his purpose. This can be a time consuming process and can lead to uneconomical design.

In …


Effect Of The Mixed Liquor Suspended Solids Concentration On The Treatment Of Dairy Wastes By Activated Sludge Process, Meredith Hambleton Saxer Jan 1962

Effect Of The Mixed Liquor Suspended Solids Concentration On The Treatment Of Dairy Wastes By Activated Sludge Process, Meredith Hambleton Saxer

Masters Theses

"The effect of the mixed liquor suspended solids concentration on the treatment of dairy wastes by the activated sludge process was investigated to provide original and basic information of value to the waste water treatment field.

The studies were conducted using a continuous flow activated sludge laboratory unit. Two different synthetic dairy waste systems were used in this investigation, the 0.05 Percent Skim Milk Waste System and the 0.1 Percent Skim Milk Waste System. These wastes provided BOD loadings of 43.9 and 91.1 lb. BOD per day per 1000 cu. ft., respectively, at the 12 hour detention period employed. Mixed …


A Study Of The Electro-Chemical Injection Of Ca(Oh)₂ Into Pure Kaolin Clay, Sam Michael Savas Jr. Jan 1962

A Study Of The Electro-Chemical Injection Of Ca(Oh)₂ Into Pure Kaolin Clay, Sam Michael Savas Jr.

Masters Theses

"The work presented in this thesis is the investigation and study of a possible and successful means of injecting an electrolyte solution into a fine grain soil mass with the use of electric current and to measure some of the changes of its physical properties. A NoKarb Georgia Kaolin Clay was treated by passing a preferential electrolyte solution of Ca(OH)₂ using direct current for a period of one and six days. The tests performed during this investigation included the following: (a) tri-axial tests, (b) atterberg limits, (c) pH determination, (d) moisture content change (from treatment), (e) visual settling of treated …


Investigation Of Flow Rates Through A Rockfill Dam With An Internal Spillway, Jerry R. Bayless Jan 1962

Investigation Of Flow Rates Through A Rockfill Dam With An Internal Spillway, Jerry R. Bayless

Masters Theses

"Tests were performed on a model of a rockfill dam with an internal spillway for the purpose of developing a method of predicting the flow rate through the dam. The flow rate depends upon the head but is affected by the rock size and the height of the impervious core; there- fore, these factors were varied in the study. A relation for flow rate in terms of head was found for each combination of rock size and core height used and was compared to the general weir equation to find the coefficient of contraction; thus the effect of changing core …


Study Of The Design Of Reinforcement For Prestressed Concrete And Blocks, Charles Robert Hoffman Jan 1962

Study Of The Design Of Reinforcement For Prestressed Concrete And Blocks, Charles Robert Hoffman

Masters Theses

"This thesis is an analysis of the transverse tensile stress condition in an end block of a prestressed concrete beam. A stress analysis was made by photoelasticity and compared to the mathematical solutions and experimental solutions performed by others on concrete models. The photoelastic model was made from a piece of Columbia Resin, 39.

Whatever method is chosen to determine the stress condition, there is no exact code that can be established to fit the various type problems which arise"--Abstract, page 1.


A Study Of Small Watersheds Within The State Of Missouri, Terence E. Harbaugh Jan 1962

A Study Of Small Watersheds Within The State Of Missouri, Terence E. Harbaugh

Masters Theses

"The present status of data from watersheds in the under 10 square mile drainage area classification, pages much to be desired. However, this study of 45 small watersheds within the State of Missouri gives an indication that surface runoff from these basins may be predicted with a fair degree of accuracy. The inclusion of a shape factor AL2 and its use as a portion of the "basin index" (AL2S1/2) gives accurate results as a predictor of the "mean annual flood". The mean annual flood may be adequately computed by the formula, MAF = 113(AL2 …


Shear Stress Distribution In Haunched Beam Models, Manyu K. Mehta Jan 1962

Shear Stress Distribution In Haunched Beam Models, Manyu K. Mehta

Masters Theses

"The purpose of this thesis has been to give the distribution of shear stress inside a haunch. A haunch is generally provided to relieve high stress concentrations at the face of the column. However the nature of shear stress distribution inside the haunch is not known.

This stress distribution was determined from a photo- elastic study on a CR-39 model. It is noted that the haunch reduces the stress concentration at the face of the column but at the same time somewhere near the point where the haunch meets the beam there is a high stress concentration.

Shear stress changes …


Velocity Distribution Induced By Free Jet Impact On A Stilling Basin, Sedat Özkol Jan 1962

Velocity Distribution Induced By Free Jet Impact On A Stilling Basin, Sedat Özkol

Masters Theses

"At present, the use of the free jet impacting on a stilling basin as an energy dissipator is not very common, as there is very little information available concerning this particular field. However, if conditions are favorable, this type of energy dissipator will be quite economical to construct.

In this paper it was found that the hydraulic behavior of the free jet impacting on a stilling basin can be determined to a degree which may be considered accurate for practical purposes. It was also shown that given the free jet velocity, the magnitudes of the velocities at the critical points …


A Comparison Of Backwater Profile Computation, Alwin Chang Hsin Young Jan 1962

A Comparison Of Backwater Profile Computation, Alwin Chang Hsin Young

Masters Theses

"Bakhmeteff's, Von Seggern's, and the Standard Step methods were chosen for a comparative study of backwater profile determinations made with the assistance of a digital computer. This study concentrated on the M-l type of curves for different kind of prismatic channels; i.e. rectangular, trapezoidal, and parabolic channels. From the results obtained by each method for different channels, the consistency between the several methods and their applicability to all shapes of channel had been studied. Also the effect of the number of reaches used in flow profile determinations, the effect of the use of an average value of (1-ß), hydraulic exponents …


Significance Of Layer Deflection Measurements : Technical Report, Richard David Walker, Eldon J. Yoder, Robert Lowry, Walter T. Spencer Jan 1962

Significance Of Layer Deflection Measurements : Technical Report, Richard David Walker, Eldon J. Yoder, Robert Lowry, Walter T. Spencer

JTRP Technical Reports

No abstract provided.


Urban Intersection Evaluation Utilizing Average Delay Per Vehicle : Technical Report, William Walter Schenler, Harold L. Michael Jan 1962

Urban Intersection Evaluation Utilizing Average Delay Per Vehicle : Technical Report, William Walter Schenler, Harold L. Michael

JTRP Technical Reports

No abstract provided.


Serviceability Ratings Of Highway Pavements, Velma Fumiko Nakamura Jan 1962

Serviceability Ratings Of Highway Pavements, Velma Fumiko Nakamura

JTRP Technical Reports

No abstract provided.


Nuclear Moisture-Density Measurements In Construction Control : Technical Paper, Alfonso Burgers, Eldon J. Yoder Jan 1962

Nuclear Moisture-Density Measurements In Construction Control : Technical Paper, Alfonso Burgers, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.


Analysis Of Road Roughness Of Flexible Pavements Using The Kentucky Accelerometer, Lyle G. Wermers Jan 1962

Analysis Of Road Roughness Of Flexible Pavements Using The Kentucky Accelerometer, Lyle G. Wermers

JTRP Technical Reports

No abstract provided.


Serviceability Ratings Of Highway Pavements : Technical Paper, Velma Fumiko Nakamura, Harold L. Michael Jan 1962

Serviceability Ratings Of Highway Pavements : Technical Paper, Velma Fumiko Nakamura, Harold L. Michael

JTRP Technical Reports

No abstract provided.


Flexible Pavement Deflections-Methods Of Analysis And Interpretation : Technical Paper, Eldon J. Yoder Jan 1962

Flexible Pavement Deflections-Methods Of Analysis And Interpretation : Technical Paper, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.


A Laboratory Study Of The Degradation Of Aggregates In Bituminous Mixes, Fred Moavenzadeh Jan 1962

A Laboratory Study Of The Degradation Of Aggregates In Bituminous Mixes, Fred Moavenzadeh

JTRP Technical Reports

No abstract provided.


Recent Developments In Aggregate Research, John Francis Mclaughlin Jan 1962

Recent Developments In Aggregate Research, John Francis Mclaughlin

JTRP Technical Reports

No abstract provided.


A Study Of School Crossing Protection : Technical Paper, Forrest D. Miller, Harold L. Michael Jan 1962

A Study Of School Crossing Protection : Technical Paper, Forrest D. Miller, Harold L. Michael

JTRP Technical Reports

No abstract provided.


Physical Characteristics Of Sand-Soil Mixtures Under Repeated Dynamic Loads, Rodney Wendell Johnson Jan 1962

Physical Characteristics Of Sand-Soil Mixtures Under Repeated Dynamic Loads, Rodney Wendell Johnson

JTRP Technical Reports

No abstract provided.


Variability Of Engineering Properties Of Brookston And Crosby Soils, Delon Hampton, Eldon J. Yoder, I. W. Burr Jan 1962

Variability Of Engineering Properties Of Brookston And Crosby Soils, Delon Hampton, Eldon J. Yoder, I. W. Burr

JTRP Technical Reports

No abstract provided.


Evaluation Of Asphalt-Aggregate Distribution In Bituminous Mixes By Autoradiography , Donald R. Lamb Jan 1962

Evaluation Of Asphalt-Aggregate Distribution In Bituminous Mixes By Autoradiography , Donald R. Lamb

JTRP Technical Reports

No abstract provided.


Procedural Manual For A School Crossing Protection Program In The Communities Of Indiana, Harold L. Michael Jan 1962

Procedural Manual For A School Crossing Protection Program In The Communities Of Indiana, Harold L. Michael

JTRP Technical Reports

No abstract provided.


Measurement Of Moisture Gradients In Concrete Pavement Slabs : Progress Report No. 4, J. Richard Bell Jan 1962

Measurement Of Moisture Gradients In Concrete Pavement Slabs : Progress Report No. 4, J. Richard Bell

JTRP Technical Reports

No abstract provided.


A Sufficiency Rating Method For Urban Intersections : Technical Paper, William Walter Schenler, Harold L. Michael Jan 1962

A Sufficiency Rating Method For Urban Intersections : Technical Paper, William Walter Schenler, Harold L. Michael

JTRP Technical Reports

No abstract provided.


A Quantitative Evaluation Of The Geometric Aspects Of Highways, Kenneth John Tharp Jan 1962

A Quantitative Evaluation Of The Geometric Aspects Of Highways, Kenneth John Tharp

JTRP Technical Reports

No abstract provided.


The Simulation Of Traffic Flow To Obtain Volume Warrants For Intersection Control, Russell Maclean Lewis Jan 1962

The Simulation Of Traffic Flow To Obtain Volume Warrants For Intersection Control, Russell Maclean Lewis

JTRP Technical Reports

No abstract provided.


Repeated Load Triaxial Test With Pore Pressure Measurement : Technical Paper, Rodney Wendell Johnson, Eldon J. Yoder Jan 1962

Repeated Load Triaxial Test With Pore Pressure Measurement : Technical Paper, Rodney Wendell Johnson, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.


The Irish Plumber And Heating Contractor, January 1962 (Complete Issue) Jan 1962

The Irish Plumber And Heating Contractor, January 1962 (Complete Issue)

Building Services Engineering

No abstract provided.


Analysis Of Flat Plates By Reaction Distribution Method, David D. W. Yang Jan 1962

Analysis Of Flat Plates By Reaction Distribution Method, David D. W. Yang

Masters Theses

"This study was made to analyze rectangular flat plates by the method of Reaction Distribution and to compare results obtained by this method with that of other methods. The basic approach is to divide the plate into an equivalent grid system and introduce temporary supports at the intersecting joints. The results from this study shows that the Reaction Distribution method is useful in a qualitative analysis of the behavior in a plate but is less satisfactory in obtaining reliable quantitative results"--Abstract, page 2.