Browsing Dissertations & Theses by Issue Date
Now showing items 1-20 of 583
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Runway Incursion Mitigation, Capacity Enhancement, And Safety Improvements With Perimeter Taxiway Operations at Dallas Fort Worth International Airport
(Civil & Environmental Engineering, 2007-08-23)A perimeter taxiway (PT) or end-around taxiway (EAT) operation is a new concept being developed at several airports around the country to eliminate active departure runway incursions during peak periods. PTs will enhance ... -
Performance And Check-out Verification Testing Of A New True Triaxial Apparatus Using Partially Saturated Silty Sand
(Civil & Environmental Engineering, 2007-08-23)A stress-controlled, flexible boundary, true triaxial (cubical) testing apparatus has been developed to test 3-inch cubical specimen of partially saturated soil under different moisture contents and for a wide range of ... -
Mode Choice Models For Long Distance Travel In USA
(Civil & Environmental Engineering, 2007-08-23)The influences of technology and economic development on human activity are increasingly taking place on larger spatial scales. As a consequence, complementary interactions between urban regions are getting stronger, which ... -
Experimental Investigations On Small-strain Stiffness Properties Of Partially Saturated Soils Via Resonant Column And Bender Element Testing
(Civil & Environmental Engineering, 2007-08-23)A comprehensive series of resonant column (ASTM D 2325-68), bender element (ASTM C 778), pressure plate (ASTM D 4015-92), and filter paper (ASTM D 5298) tests were conducted on compacted specimens of poorly graded sand ... -
Development Of Finite Element Method-based Model Equations For Hollow Tapered Poles
(Civil & Environmental Engineering, 2007-08-23)This study presents the development of three-parameter load-deflection models for steel and FRP poles commonly used to support closed circuit television cameras. An experimental investigation is carried out to obtain static ... -
Expressions For Bond Stress Of A Tension Splice In Steel Reinforced Concrete
(Civil & Environmental Engineering, 2007-08-23)The aim of the research is to develop expressions for the bond stress at a tension splice in reinforced concrete. Many experiments have been conducted inorder to ascertain the relationship between appropriate variables and ... -
Experimental Studies To Address Strengths Of Limestone Cores, Sulfate Heave Problems In Limestone Cores And Tunnel Lining
(Civil & Environmental Engineering, 2007-08-23)Sulfate induced heave is a common scenario in tunnels located on sedimentary rocks containing Pyrites. Pyrite oxidation produces Gypsum which is a major source of natural sulfates. DART NC -1B tunnel is located in Dallas, ... -
Nonlinear Finite Element Model Analysis Of Human Accommodation Lens
(Civil & Environmental Engineering, 2007-08-23)The crystalline human lens is modeled by using the finite element software, ABAQUS/CAE Version 6.5-1 as an axisymmetric shell to study the optical power and displacement of anterior and posterior poles induced due to zonule ... -
Analysis Of Hat Sectioned Reinforced Composite Beams Including Thermal Effects
(Civil & Environmental Engineering, 2007-08-23)A simple analytical method for analyzing fiber reinforced polymeric composite beams with hat cross-section is presented. The method includes development of closed-form expression of the axial, bending and their coupling ... -
Determination Of Safe Buffer Width Of Roadway To Protect Human Health Form Harmful NOx Exposure
(Civil & Environmental Engineering, 2007-08-23)According to the 2004 EPA Trends Report, US on-road transportation sources emit 36% of nitrogen oxides (NOx), 63% of carbon monoxide (CO), and 29% of volatile organic compounds (VOCs). This research determines a safe roadway ... -
Nonlinear Finite Element-based Investigation Of The Effect Of Bedding Thickness On Underground Pipe
(Civil & Environmental Engineering, 2007-08-23)The pipe-soil interaction is studied by using the finite element software, ABAQUS/CAE Version 6.5-1 as a symmetric model of embankment installation to study the effect of bedding property and thickness on pipe-soil interaction ... -
Investigation Of Bamboo As Reinforcement In Concrete
(Civil & Environmental Engineering, 2007-08-23)This study investigated the feasibility of using bamboo as a reinforcement alternative to steel in concrete structural members. The specifications studied were the bamboo's tensile strength and its pullout characteristics ... -
Evaluation Of Texas Cone Penetrometer Test To Predict Undrained Shear Strength Of Clays
(Civil & Environmental Engineering, 2007-08-23)The cone penetration test used in Texas is termed as Texas cone penetrometer (TCP), which works on dynamic principles similar to those of SPT, i.e. a hammer is used to drive the cone device for a preset depth of penetration ... -
Laboratory And Field Investigations To Address Erosion, Volume Change And Desiccation Cracking Of Compost Amended Expansive Subsoils
(Civil & Environmental Engineering, 2007-08-23)Desiccations cracks are formed during drying process of fine grained cohesive soils in summer and these cracks often appear on unpaved subgrades due to direct exposure to sun. These cracks allow surface runoff infiltration ... -
Impacts Of Signal Synchronization On Vehicular Emissions - An On-board Measurement Case Study
(Civil & Environmental Engineering, 2007-08-23)Nearly 56% of total nitrogen oxide (NOx) emissions are produced by mobile sources. Transportation and air quality managers at the state and regional level have the responsibility of developing and evaluating Transportation ... -
Field And Experimental Studies To Assess The Performance of Stabilized Expansive Clay
(Civil & Environmental Engineering, 2007-08-23)A vast majority of the expansive soils are montmorillonite-rich clays, over consolidated clays and shales. The swell and shrinkage movements of expansive soil cause considerable damage to structures such as buildings and ... -
Performance Evaluation Of Bamboo Reinforced Concrete Beams
(Civil & Environmental Engineering, 2007-08-23)This study presents the evaluation of the feasibility of the use of bamboo as a potential reinforcement in concrete structural members. To achieve this objective a series of tensile tests on three types of bamboo Solid; ... -
Removal Of Carbonyl Sulfide Using Compost Biofilter: Measurement Of Removal Rates And Elimination Capacity In Conjunction With Hydrogen Sulfide
(Civil & Environmental Engineering, 2007-08-23)A lab study using biofiltration was conducted using three PVC columns as biofilters, with hardwood chips and compost as the media. Previous research determined the removal efficiency of carbonyl sulfide alone. (Nawal, 2004) ... -
Permeability Of Municipal Solid Waste In Bioreactor Landfill With Degradation
(Civil & Environmental Engineering, 2007-08-23)Bioreactor landfills are operated and controlled to accelerate refuse decomposition, gas production and biological stabilization of the municipal solid waste (MSW). Leachate recirculation in bioreactor landfill creates a ... -
Stated Preference Modeling And Analysis Of Managed Lanes
(Civil & Environmental Engineering, 2007-08-23)The thesis deals with the Managed Lanes demand estimation problem in the state of Texas. Managed Lanes are a general type of High Occupancy Toll roads, whose lane management and operational features may be dynamically ...