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Full-Text Articles in Engineering
The Impact Of Roofing Material On Building Energy Performance, Ali Badiee
The Impact Of Roofing Material On Building Energy Performance, Ali Badiee
All ETDs from UAB
The last decade has seen an increase in the efficient use of energy sources such as water, electricity, and natural gas as well as a variety of roofing materials, in the heating and cooling of both residential and commercial infrastructure. Oil costs, coal and natural gas prices remain high and unstable. All of these instabilities and increased costs have resulted in higher heating and cooling costs, and engineers are making an effort to keep them under control by using energy efficient building materials. The building envelope (that which separates the indoor and outdoor environments of a building) plays a significant …
A Comprehensive Assessment Of Possible Links Between Digital Advertising Billboards And Traffic Safety, Md Mozahidul Islam
A Comprehensive Assessment Of Possible Links Between Digital Advertising Billboards And Traffic Safety, Md Mozahidul Islam
All ETDs from UAB
Advertising billboards are a common roadside object and a very efficient medium of outside advertising. For years, static billboards have been adopted by the billboard advertising companies. Most recently, a sizeable portion of the regular (static) billboards have been digitized to convey more information to the drivers, thus raising questions about their potential impact on traffic safety. Frequently changing images on digital advertising billboards may compel more glances, and sequential messages may hold drivers' gazes longer until the entire message is read. Earlier studies sponsored by billboard advertising companies did not report statistically significant correlations between the crash occurrences and …
Dynamic Simulation Of Concrete Barriers, Adel Badiee
Dynamic Simulation Of Concrete Barriers, Adel Badiee
All ETDs from UAB
The American Association of State Highway and Transportation Officials (AASHTO) Bridge Specifications proposes “Yield Line Theory Analysis” in order to determine the structural capacity of concrete barriers based on their static strength. However, it appears that this method conservatively underestimates the structural capacity of concrete barriers to endure high vehicle impacts. Typically, this deficiency has been compensated for artificial reductions in bridge rail design loads used in the design code. Existing barrier design guidelines - static design methods incorporated into the AASHTO Bridge Specifications - are based upon National Cooperative Highway Research Program (NCHRP) Report 350. The Manual for Assessing …
Drive-By Bridge Damage Inspection, Ahmed Ali Elhattab
Drive-By Bridge Damage Inspection, Ahmed Ali Elhattab
All ETDs from UAB
Bridge structures are subjected to continuous degradation due to environmental effects and increase in traffic loading. Bridge monitoring is a key element of any maintenance strategy as it can provide early signs of structural deterioration. In recent years, the demand towards sensor-based bridge monitoring in lieu of visual inspection, has increased. However, sensor-based monitoring is costly and requires significant maintenance. Recent studies on bridge damage monitoring have focused on the instrumentation of a passing vehicle instead of the bridge. This approach is referred to ‘drive-by’ bridge inspection (Kim and Kawatani, 2009). Using this approach, the bridge itself is not instrumented, …