Time-history dynamic analysis requires proper selections of earthquake records based on the design earthquake and site-specific... Show moreTime-history dynamic analysis requires proper selections of earthquake records based on the design earthquake and site-specific characteristics. The selected earthquake records, most of the time, must be scaled to match the design response spectrum. The design response spectrum was a derivation of a seismic hazard model with consideration of site-specific effect. The hazard model was developed by combining the deterministic seismic hazard analysis (DSHA) and the probabilistic seismic hazard analysis (PSHA). Considering that the observed structure in this study is an embankment dam located at seismically active region, the deterministic hazard model was represented by the 84th percentile (median-plus-one standard deviation) spectra while the probabilistic hazard model provided a uniform hazard spectrum (UHS) with 1% probability of being exceeded in 100 years of structure’s lifetime. The combined hazard model shows the response at the bedrock, thus, the propagation to ground surface was also analyzed by assuming several scenarios of soil deposit. The study assumed four scenarios of site-specific classes A&B, C, D, and E, with three ground motion records were selected for each scenario were selected. Each ground motion was scaled to meet the design response spectrum of each scenario. Performance of the dam against each ground motion was analyzed to evaluate parameters such as stability by using factor of safety, and deformation at the crest to check the freeboard status after earthquake event. The results show that the model remains stable after experiencing seismic force on site class C or lower, while site class D yielded nearly fail condition (average FOS 1.06) and all motions in site class E have failed the dam. M.S. in Civil Engineering, May 2017 Show less
http://www.archive.org/details/designofcoalyard00comp Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket;... Show morehttp://www.archive.org/details/designofcoalyard00comp Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket; Bibliography: leaf 63 Show less
http://www.archive.org/details/effectofaddingsp00hall Thesis (B.S.)--Armour Institute of Technology, 1914 Bibliography: leaf 22 B.S. in Civil... Show morehttp://www.archive.org/details/effectofaddingsp00hall Thesis (B.S.)--Armour Institute of Technology, 1914 Bibliography: leaf 22 B.S. in Civil Engineering, 1914 Show less
Accurate characterization of building characteristics that influence indoor air quality (IAQ), thermal comfort, and energy consumption in... Show moreAccurate characterization of building characteristics that influence indoor air quality (IAQ), thermal comfort, and energy consumption in buildings is often limited to the use of proprietary hardware and software, which can adversely affect both functionality and costs. In response, the Open Source Building Science Sensors (OSBSS) project was launched to design and develop a network of inexpensive open source devices based on the Arduino platform for measuring and recording long-term indoor environmental and building operational data. The project includes a variety of sensors and dataloggers designed to assess energy, comfort, and air quality in buildings, including air and surface temperatures, air relative humidity, surface water activity, human occupancy and activity, light intensity, CO2, and a generic datalogger that can log data from other sensors such as HVAC system pressure sensors for determining system airflow rates or runtimes. The development, calibration, and performance of the sensor network is being documented in its entirety and made available freely online along with detailed tutorials designed to allow other researchers to incorporate the sensors in both ongoing and future investigations of energy, air quality, and comfort in the built environment. The OSBSS network of devices will ultimately allow for more flexibility in synchronizing a large number of measurements with high spatial and temporal resolution in a more cost effective manner for use in research projects and building automation and control. M.S. in Civil, Architectural and Environmental Engineering, May 2015 Show less