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Articles 151 - 164 of 164
Full-Text Articles in Civil Engineering
A Pilot Study On The Effects Of Temperature On The Material Properties Of Prestressed Concrete And The Use Of Thermogravimetric Analysis In The Assessment Of Heat-Affected Concrete, Kacie Caple
All Theses
An understanding of the material property changes in building materials due to exposure to a fire is needed for accurate damage assessment of a structure. Discussion pertaining to material property changes and the bond between concrete and prestressing steel following elevated temperature exposures is presented. Evaluation of the use of thermogravimetric analysis (TGA) as a post-fire analysis tool to determine the maximum temperature exposure of concrete is also included.
Heated concrete cylinders were tested to determine the compressive strength and modulus of elasticity changes of concrete. Heated steel prestressing strands were tested in tension to determine changes in the ultimate …
Experimental And Analytical Application Of The Hodd Method For The Detection Of Damage, Jacob Merkley
Experimental And Analytical Application Of The Hodd Method For The Detection Of Damage, Jacob Merkley
All Theses
Detecting damage location and severity in civil engineering structures has become an important research topic in the past several decades. Various non-destructive damage identification methods using dynamic properties from ambient and forced vibration have been developed. Researchers have shown that higher order derivatives of mode shapes of the 2nd and 4th order can be effective in detecting damage in civil engineering structures. Furthermore, these higher order derivatives are sensitive to small changes in global stiffness facilitating the detection of small degrees of damage.
In this study a modal analysis is performed on analytical and experimental simply supported beams using the …
Performance Based Contracting And Improving The Current Contracting Process, Troy Berkland
Performance Based Contracting And Improving The Current Contracting Process, Troy Berkland
All Theses
The primary objective of the research described in this report was to suggest improvements to the maintenance contracting process currently utilized by the South Carolina Department of Transportation (SCDOT). A secondary research objective was to examine to what extent SCDOT could migrate more toward performance based, as opposed to method based, highway maintenance specifications.
A comprehensive literature review indicated some states had successfully implemented performance based specifications for a wide range of maintenance activities whereas others had not. Some states have adopted performance based specifications as part of a comprehensive asset management program whereby the contractor typically performs all routine …
Comparison Of Effectiveness Of Roadway Design Treatments For Transitioning From Rural Areas To Urban Areas Using A Driving Simulator, Candice Hein
All Theses
Traffic fatalities are a leading cause of death in the United States. Rural roads are especially hazardous as they account for 60 percent of all traffic fatalities in the United States. Three main reasons for the rural road problems are high speeds, low volumes, and reduced driver awareness. This is particularly problematic where these roads navigate through communities requiring reduced speeds. Drivers who aren't alert and are driving too fast often miss the reduced speed warning signs and often don't slow until after they have entered the community. Therefore, engineers must do something to the design of the roadway environment …
Assessment Of Driver Speeds, Compliance In Rural School Zones: Comparison Of Speed By School Level And Time Of Day, Stuart Day
All Theses
TThis study analyzed driver's speeds prior to entering school zones as well as the speeds traveling through school zones. A comparison was conducted to determine if drivers complied with school speed zones using only the standard school sign arrangement found in the Manual on Uniform Traffic Control Device. Two rural school zones in Oconee County, South Carolina were analyzed in this study as rural areas tend to have higher speeds and fewer other factors that could contribute to changes in driver behavior. In order to gather data, data collection devices known as Hi-Stars were placed in the roadway on both …
Steer It And Clear It: Effectiveness Of Quick Clearance Legislation, Amy Carol Hamlin
Steer It And Clear It: Effectiveness Of Quick Clearance Legislation, Amy Carol Hamlin
All Theses
Innovative incident management strategies have been sought by transportation professionals to minimize the impacts of incidents on traffic operation and safety. Some current quick clearance strategies such as 'Steer It and Clear It' legislation in South Carolina, which requires driver(s) of involved vehicle(s) in a minor incident to move vehicles promptly from the traveled roadway prior to the arrival of the first responders, can potentially reduce the duration of an incident. The research detailed in this paper endeavored to measure the benefit of the Steer It and Clear It law on a section of I-85 in South Carolina. A simulation …
Evaluation Of Different Contra-Flow Strategies For Hurricane Evacuation In Charleston, South Carolina, Liz Stephen
Evaluation Of Different Contra-Flow Strategies For Hurricane Evacuation In Charleston, South Carolina, Liz Stephen
All Theses
The number of category four and five hurricanes has nearly doubled over the past decade. Charleston, the second most populous city in South Carolina, is located on a very low peninsula, making it susceptible to floods during hurricanes and storm surges. In the event of a hurricane, the population at-risk must be evacuated to safety as quickly as possible. The Interstate system is the primary mode to evacuate at-risk population out of Charleston. Effective traffic management strategies are needed to manage the significant increase in demand on highways during the evacuation and contra-flowing traffic has been applied as a strategy …
Influence Of Socio-Economic And Demographic Factors On Crashes In Rural South Carolina At Sub-County Level, Sunil Jakhadi
Influence Of Socio-Economic And Demographic Factors On Crashes In Rural South Carolina At Sub-County Level, Sunil Jakhadi
All Theses
State of South Carolina ranks high in the fatality rates. The state is a predominately a rural state with more percentage of rural roads. This research focuses on the statistical variation of crash rates between the county and block-group, especially rural once to the state. Also, it focuses on the possibility of various socio-economic and demographic characters influence on the high crash rates particularly in rural South Carolina.
Crash database for the year 2004 was acquired from South Carolina Department of Transportation and was processed by the research team at Clemson University. This processed database was imported into GIS. Spatial …
Life Cycle Cost Analysis Of Pavements: State-Of-The-Practice, Zeynep Guven
Life Cycle Cost Analysis Of Pavements: State-Of-The-Practice, Zeynep Guven
All Theses
Life Cycle Cost Analysis (LCCA) is performed by transportation agencies in the design phase of transportation projects in order to be able to implement more economical strategies, to support decision processes in pavement type selection (flexible or rigid) and also to assess the relative costs of different rehabilitation options within each type of pavement. However, most of the input parameters are inherently uncertain. In order to implement the LCCA process in a reliable and trustworthy manner, this uncertainty must be addressed. This thesis summarizes a through research that aims at improving the existing LCCA approach for South Carolina Department of …
Effect Of South Caroline Belt Law On Safety Belt Use, Sourabh Patki
Effect Of South Caroline Belt Law On Safety Belt Use, Sourabh Patki
All Theses
A number of factors and accessories help save lives and prevent injuries to road users, yet safety belts have become synonymous with automobile safety today, unlike any accessory before or since their introduction in automobiles. However, the scientific advances in automobile safety, followed by the acceptance of the necessity for safety in automobiles by both the manufacturers and the population, finally leading to the introduction of safety features and their incorporation within the laws occurred over a much longer span, continuing even today. Today's Safety movement aims at increasing safety belt using an awareness campaigns, accompanied by enforcement. Safety belt …
Best Practices For Developing The Engineer's Estimate, Karl Niedzwecki
Best Practices For Developing The Engineer's Estimate, Karl Niedzwecki
All Theses
The research project 'Best Practices for Developing the Engineering Estimate' was executed by Clemson University on behalf of the South Carolina Department of Transportation (SCDOT). The primary objective of this research project was to investigate the strengths and weaknesses of two types of estimating methods being utilized today by state department of transportations (DOT) nationwide. These two types of estimating methods are the unit cost line item approach, which the SCDOT utilizes, and the cost-based estimating approach. This research report identifies accuracy obtained, resources expended, and methodologies utilized when implementing either type of estimating approach. This was done so the …
Evaporation Estimation Using A Floating Pan, Michael Klink
Evaporation Estimation Using A Floating Pan, Michael Klink
All Theses
Almost all regions in the United States must accurately estimate evaporation to have effective water management programs. The purpose of this study is to develop a better method for measuring evaporation. Lake evaporation along with meteorological data are measured directly from a floating pan. The floating pan is specifically designed to account for one of the most sensitive parameters of evaporation, the water surface temperature, which the design achieves. However, other design factors such as air movement, solar radiation, stability, heat transfer, wave action, water level range, and site location were also taken into consideration. The evaporation measured from the …
Optimizing The Project Team's Contribution To Business Objectives, Chad Rowland
Optimizing The Project Team's Contribution To Business Objectives, Chad Rowland
All Theses
The traditional expectations of the project team are for the processes of engineering, procurement, construction, and start-up to be expertly administered. However, these performance criteria can be satisfied yet still not meet the ultimate business needs of the owner. The purpose of this thesis was to determine ways to improve the likelihood of achieving owner's business objectives. Fifty-one questionnaire survey forms were analyzed to obtain data for thirty-three pre-project planning activities. A data analysis concluded with a degree of statistical significance that for thirteen of the thirty-three activities, the more successful projects, as defined by the satisfaction of the business …
The Effects Of Calcium Magnesium Acetate Deicers On Portland Cement Mortar Bars, Jeffrey Davis
The Effects Of Calcium Magnesium Acetate Deicers On Portland Cement Mortar Bars, Jeffrey Davis
All Theses
This thesis involves the investigation of the effects of Calcium Magnesium Acetate (CMA) deicers on Portland cement mortar bars. In addition to mass-loss, length change, pulse velocity and soak solution pH, the thesis also contains a rigorous chemical analysis of the mortar completed at the National Institute of Standards and Technology (NIST) in Gaithersburg, MD. The research completed at NIST was done using a technique known as X-ray Mapping. The X-ray techniques were employed to determine the exact nature of the damage caused by CMA. The thesis is a combination of two papers, on the physical effects of CMA and …