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Articles 10951 - 10980 of 11799

Full-Text Articles in Civil and Environmental Engineering

Digested Sludge Dewatering On Drying Beds Under Controlled Environmental Conditions, Daniel James Harris Jan 1971

Digested Sludge Dewatering On Drying Beds Under Controlled Environmental Conditions, Daniel James Harris

Masters Theses

"The dewatering characteristics of anaerobically digested primary and activated sludge were investigated under eight selected combinations of laboratory controlled air temperature and relative humidity using three open, drained model beds, as well as a closed, drained and an open, nondrained bed. The evaporation rate from a free water surface was also determined. Moisture content, drainage, evaporative weight loss, and sludge surface recession were measured and recorded periodically throughout the two week period of each of the eight experiments. Relationships were shown to exist between sludge moisture content, evaporation rate from a free water surface, and the parameters 6T (the difference …


A Digital Computer Simulation Of A Rural Two-Lane Highway, D. Jay Frankenfield Jan 1971

A Digital Computer Simulation Of A Rural Two-Lane Highway, D. Jay Frankenfield

Masters Theses

"The traffic flow model developed in this study is a digital computer simulation utilizing the technique of periodic scanning to move the vehicles through a series of unit blocks. The model simulates traffic flow on a rural two-lane highway by assuming a straight and level road and incorporating sight distance restrictions and no-passing zones to simulate the effect of limited sight distance. By utilizing various "passing rules" to initiate the passing maneuver, three general topics were investigated. This study investigated the use of 1000 ADT as a criterion for yellow line striping no-passing by using the computer simulation to determine …


Compressibility Effects On Transient Gas Pipe Flow, Gerald Francis Mouser Jan 1971

Compressibility Effects On Transient Gas Pipe Flow, Gerald Francis Mouser

Masters Theses

"Abstract (1) Methods of iterative solution for the partial-differential equations that govern the transient flow of gases in pipelines are obtained by using the method of characteristics and linear finite-difference techniques. Solutions are developed for 1) a constant gas compressibility factor throughout transient conditions, and 2) a variable gas compressibility factor at constant temperature dependent upon pressures encountered during transient flow. Theoretical studies are made to compare results using both approaches for pipelines operating at various constant flowing temperatures. Results show greater differences between the two methods at lower values of flowing temperature due to the more rapidly changing compressibility …


The Effect Of Skip-Grading On Stability Of Soil-Aggregate Mixtures., Asif Faiz Jan 1971

The Effect Of Skip-Grading On Stability Of Soil-Aggregate Mixtures., Asif Faiz

JTRP Technical Reports

No abstract provided.


Practical Optimization Of Steel Highway Bridge Beams., Robert Henry Busek Jan 1971

Practical Optimization Of Steel Highway Bridge Beams., Robert Henry Busek

JTRP Technical Reports

No abstract provided.


Optimization Of The Structural Design Of Asphalt Pavements : Technical Paper, Joseph C. Oppenlander, Salim Said Hejal, L. D. Burns Jan 1971

Optimization Of The Structural Design Of Asphalt Pavements : Technical Paper, Joseph C. Oppenlander, Salim Said Hejal, L. D. Burns

JTRP Technical Reports

No abstract provided.


An Evaluation Of Traffic Signal Coordination, Conway Edward Cooper Jan 1971

An Evaluation Of Traffic Signal Coordination, Conway Edward Cooper

JTRP Technical Reports

No abstract provided.


The Prediction Of Running Speeds On Urban Arterial Streets, Kenneth Alan Shackman Jan 1971

The Prediction Of Running Speeds On Urban Arterial Streets, Kenneth Alan Shackman

JTRP Technical Reports

No abstract provided.


Travel Time And Accident Benefits Due To Reconstruction Of U.S. 52 Bypass At Lafayette, Indiana : Progress Report, Alexander Edward Mcneil Jan 1971

Travel Time And Accident Benefits Due To Reconstruction Of U.S. 52 Bypass At Lafayette, Indiana : Progress Report, Alexander Edward Mcneil

JTRP Technical Reports

No abstract provided.


Mechanical Methods Of Steel Placement For The Slipform Construction Of Continuously Reinforced Concrete Pavements : Technical Paper, Charles F. Scholer, Olubayo Timothy Olateju Jan 1971

Mechanical Methods Of Steel Placement For The Slipform Construction Of Continuously Reinforced Concrete Pavements : Technical Paper, Charles F. Scholer, Olubayo Timothy Olateju

JTRP Technical Reports

No abstract provided.


A Generalized Investigation Of Potentially Poor Soil Support By Regional Geomorphic Units Within The Adjacent 48 States : Preprint, Matthew W. Witczak, C. W. Lovell Jan 1971

A Generalized Investigation Of Potentially Poor Soil Support By Regional Geomorphic Units Within The Adjacent 48 States : Preprint, Matthew W. Witczak, C. W. Lovell

JTRP Technical Reports

No abstract provided.


Techniques In Slipform Paving And Continuously Reinforced Concrete Pavement Construction, Olubayo Timothy Olateju Jan 1971

Techniques In Slipform Paving And Continuously Reinforced Concrete Pavement Construction, Olubayo Timothy Olateju

JTRP Technical Reports

No abstract provided.


Driver Information Systems For Highway-Railway Grade Crossings, Thomas Urbanik Jan 1971

Driver Information Systems For Highway-Railway Grade Crossings, Thomas Urbanik

JTRP Technical Reports

No abstract provided.


Young Drivers' Severe Automobile Accidents : Progress Report, William Asher, Michelle Shapiro Jan 1971

Young Drivers' Severe Automobile Accidents : Progress Report, William Asher, Michelle Shapiro

JTRP Technical Reports

No abstract provided.


Practical Optimization Of Steel Highway Bridge Beams: Technical Paper, Robert Henry Busek, John Thixton Gaunt, A. D. Lewis Jan 1971

Practical Optimization Of Steel Highway Bridge Beams: Technical Paper, Robert Henry Busek, John Thixton Gaunt, A. D. Lewis

JTRP Technical Reports

No abstract provided.


Herbicide-Binding Activity Of The Plasma Membrane From Grass Coleoptiles : Progress Report, Carole A. Lembi, D. James Morré Jan 1971

Herbicide-Binding Activity Of The Plasma Membrane From Grass Coleoptiles : Progress Report, Carole A. Lembi, D. James Morré

JTRP Technical Reports

No abstract provided.


An Effect Of 2, 4-D Herbicide On The Cell Surface Membrane Of Onion Stem Explants : Technical Paper, Willliam Jan Vanderwoude, Carole A. Lembi, D. James Morré Jan 1971

An Effect Of 2, 4-D Herbicide On The Cell Surface Membrane Of Onion Stem Explants : Technical Paper, Willliam Jan Vanderwoude, Carole A. Lembi, D. James Morré

JTRP Technical Reports

No abstract provided.


Criteria For No-Passing Zones : Technical Paper, Valkenburg Gerald Van, Harold L. Michael Jan 1971

Criteria For No-Passing Zones : Technical Paper, Valkenburg Gerald Van, Harold L. Michael

JTRP Technical Reports

No abstract provided.


Some Factors Affecting The Results In Cyclic Triaxial Tests, Suresh Kumar Chaudhary Jan 1971

Some Factors Affecting The Results In Cyclic Triaxial Tests, Suresh Kumar Chaudhary

Masters Theses

"A major cause of damage to structures and earth embankments during earthquakes or any other such dynamic vibrating loading conditions has been the liquefaction of saturated sands. There have been several investigations to establish a convenient and relatively simple laboratory test procedure and to study the nature of field conditions leading to sand liquefaction. This investigation evaluates the effects of sample size, testing frequency, and the method of sample preparation on the number of cycles to cause initial liquefaction in pulsating triaxial tests using standardized equipment and test procedures. It has been found that sample size does affect test results …


Contractor Quality Control: A Method Of Construction Inspection, John Scott Treadwell Jan 1971

Contractor Quality Control: A Method Of Construction Inspection, John Scott Treadwell

Masters Theses

"It has become apparent in recent years that the United States Government's construction contract supervision and administration procedures are causing an increase in contractor claims and disputes and that the system itself is becoming prohibitively expensive. To deal with some of these problems, the Department of Defense is attempting to implement a new approach to construction inspection--Contractor Quality control. Under the Contractor Quality Control System the majority of the standard contract inspection and testing responsibilities are placed on the contractor, and the Government relinquishes its traditional step-by-step inspection and testing procedures and withdraws to a position of contract surveillance. The …


The Influence Of Temperature, Carbon Content, And Preloading On Secondary Consolidation Of A Clay, Richard Kai-Ming So Jan 1971

The Influence Of Temperature, Carbon Content, And Preloading On Secondary Consolidation Of A Clay, Richard Kai-Ming So

Masters Theses

"The effect of temperature, organic carbon content, and preloading on secondary consolidation of Bryce clay has been studied. A straight line plot of void ratio versus logarithm of time was established in secondary consolidation for long term loading periods up to one month. Temperature changes within the range of 5ºC. to 45ºC. were studied in the secondary consolidation phase at different stress levels and different carbon contents of the soil. Secondary consolidation in a preloading cycle at a stress level of 2 tsf unloaded to 1 tsf and reloaded to 2 tsf was studied. The preloading tests were at temperatures …


A Generalized Investigation Of Potential Aggregate Availability By Regional Geomorphic Units Within The Adjacent 48 States, Matthew W. Witczak, C. W. Lovell Jan 1971

A Generalized Investigation Of Potential Aggregate Availability By Regional Geomorphic Units Within The Adjacent 48 States, Matthew W. Witczak, C. W. Lovell

JTRP Technical Reports

No abstract provided.


A Role For Educational Institutions In Housing Development, Paul J. Grogan Oct 1970

A Role For Educational Institutions In Housing Development, Paul J. Grogan

International Symposia on Low Cost Housing Problems

No abstract provided.


Low Cost Housing (How To Avoid The “Problem” In Three Words Or Less), Carl P. D. Sharpe Oct 1970

Low Cost Housing (How To Avoid The “Problem” In Three Words Or Less), Carl P. D. Sharpe

International Symposia on Low Cost Housing Problems

No abstract provided.


Modular Housing, Herbert Behrend Oct 1970

Modular Housing, Herbert Behrend

International Symposia on Low Cost Housing Problems

No abstract provided.


Development By Means Of Semi-Permanent Building: A New, Practical Approach In Housing And City-Planning, B. E. Friedjung Oct 1970

Development By Means Of Semi-Permanent Building: A New, Practical Approach In Housing And City-Planning, B. E. Friedjung

International Symposia on Low Cost Housing Problems

No abstract provided.


"The Buckle-Shell", V. J. Meyers, V. C. Matzen Oct 1970

"The Buckle-Shell", V. J. Meyers, V. C. Matzen

International Symposia on Low Cost Housing Problems

No abstract provided.


Low Cost Housing In The Perspective Of Metropolitan Calcutta’S Urban Renewal, S. Ghosh Dastidar Oct 1970

Low Cost Housing In The Perspective Of Metropolitan Calcutta’S Urban Renewal, S. Ghosh Dastidar

International Symposia on Low Cost Housing Problems

No abstract provided.


A Building System Using Precast Concrete Sandwich Panels From Footing To Roof, E. L. Hansen, J. O. Curtis Oct 1970

A Building System Using Precast Concrete Sandwich Panels From Footing To Roof, E. L. Hansen, J. O. Curtis

International Symposia on Low Cost Housing Problems

No abstract provided.


A Hyper-Roof Concept For Low-Cost Housing, John V. Huddleston Oct 1970

A Hyper-Roof Concept For Low-Cost Housing, John V. Huddleston

International Symposia on Low Cost Housing Problems

No abstract provided.