Environmental Monitoring In Preparation For The Installation Of A Green Roof,
2013
Purdue University
Environmental Monitoring In Preparation For The Installation Of A Green Roof, Andrew N. Martin, Ming Qu
The Summer Undergraduate Research Fellowship (SURF) Symposium
Green roofs are becoming an increasingly popular way to improve the environmental, economic, and aesthetic performance of both new and existing buildings. Along with the green roofs themselves, it is also common to install sensors to measure various environmental parameters that are affected by or important to the operation of the roof such as precipitation, temperature, and runoff. However, for most of these systems, the sensors are installed at the same time or even after the green roof. Therefore, no before-and-after comparisons can be made for those roofs. To account for this missing data, monitoring equipment was installed on a …
Phytotechnologies - Preventing Exposures, Improving Public Health,
2013
Missouri University of Science and Technology
Phytotechnologies - Preventing Exposures, Improving Public Health, Heather F. Henry, Joel Gerard Burken, Raina M. Maier, Lee A. Newman, Steven Rock, Jerald L. Schnoor, William A. Suk
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Phytotechnologies Have Potential to Reduce the Amount or Toxicity of Deleterious Chemicals and Agents, and Thereby, Can Reduce Human Exposures to Hazardous Substances. as Such, Phytotechnologies Are Tools for Primary Prevention in Public Health. Recent Research Demonstrates Phytotechnologies Can Be Uniquely Tailored for Effective Exposure Prevention in a Variety of Applications. in Addition to Exposure Prevention, Plants Can Be Used as Sensors to Identify Environmental Contamination and Potential Exposures. in This Paper, We Have Presented Applications and Research Developments in a Framework to Illustrate How Phytotechnologies Can Meet Basic Public Health Needs for Access to Clean Water, Air, and Food. …
The Reduction Of Plug Loads: The Next Obstacle In Achieving Net Zero Energy Buildings,
2013
Department of Architecture, Cork Institute of Technology, Cork, Ireland
The Reduction Of Plug Loads: The Next Obstacle In Achieving Net Zero Energy Buildings, Cian O'Driscoll, Garrett O’Sullivan, Jim Harrison
Conference Papers
As industry pushes for further reductions in the energy consumption of buildings the era of net zero energy, zero carbon buildings has been realised. However, this frontier of highly efficient architecture has unveiled the considerably large problem of plug loads. In a typical office building plug load alone can account for 15% of total energy consumption. In a Net Zero Energy building that percentage can increase to 50+%. This paper discusses the reasons for this increasingly significant building energy load and the importance of reducing it. A methodological approach and results of monitoring the kWh consumption at plug level and …
Plants As Bio-Indicators Of Subsurface Conditions: Impact Of Groundwater Level On Btex Concentrations In Trees,
2013
Missouri University of Science and Technology
Plants As Bio-Indicators Of Subsurface Conditions: Impact Of Groundwater Level On Btex Concentrations In Trees, Jordan Wilson, Rachel Bartz, Matt Limmer, Joel Gerard Burken
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Numerous Studies Have Demonstrated Trees' Ability to Extract and Translocate Moderately Hydrophobic Contaminants, and Sampling Trees for Compounds Such as BTEX Can Help Delineate Plumes in the Field. However, When BTEX is Detected in the Groundwater, Detection in Nearby Trees is Not as Reliable an Indicator of Subsurface Contamination as Other Compounds Such as Chlorinated Solvents. Aerobic Rhizospheric and Bulk Soil Degradation is a Potential Explanation for the Observed Variability of BTEX in Trees as Compared to Groundwater Concentrations. the Goal of This Study Was to Determine the Effect of Groundwater Level on BTEX Concentrations in Tree Tissue. the Central …
The Bridge Newsletter Winter 2013,
2013
Missouri University of Science and Technology
The Bridge Newsletter Winter 2013, Missouri University Of Science And Technology
The Bridge Newsletter
-Roof turned into teaching tool
-Prakash recognized
-Alumna of the Year
-Super Miners
Development Of Long Carbon Fiber-Reinforced Concrete For Dynamic Strengthening,
2013
Missouri University of Science and Technology
Development Of Long Carbon Fiber-Reinforced Concrete For Dynamic Strengthening, Zahra S. Tabatabaei, Jeffery S. Volz, Benjamin P. Gliha, Darwin I. Keener
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This paper discusses the development and testing of long carbon fibers-fibers 75 mm long or longer-to improve the resistance of reinforced concrete to dynamic loading, such as blasts and impact. In the past, attempts to use long fibers in concrete have failed as a result of both balling (agglomeration) and poor dispersion of the fibers. In the present study, two types of long carbon fibers were developed and optimized for their use in reinforced concrete. The resulting long carbon fiber-reinforced concrete (LCFRC) was subsequently evaluated through impact and blast testing. Full-scale blast testing revealed that these fibers significantly increased the …
Dynamic Nonlinearity And Nonlinear Single-Degree-Of-Freedom Model For Cable Net Glazing,
2013
Missouri University of Science and Technology
Dynamic Nonlinearity And Nonlinear Single-Degree-Of-Freedom Model For Cable Net Glazing, Ruo Qiang Feng, Jihong Ye, Guirong Yan, Jin Ming Ge
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Nonlinear Vibration Differential Equation and Vibration Frequency of Cable Net Glazing Subject to Earthquake Loading Was Determined, and a Geometrically Nonlinear Single-Degree-Of-Freedom Model for Cable Net Glazing Was Developed. the Nonlinear Response Spectra Were Established, and Nonlinear Time History Analysis with Finite Element (FE) Models Was Conducted to Verify Them. the Nonlinear Vibration Differential Equation and Frequency Obtained as Described in This Paper Provide a Basis for the Nonlinear Single-Degree-Of-Freedom Model for Cable Net Glazing. the Analytical Formula for the Nonlinear Frequency with a Simplified Expression is Highly Precise and Convenient for Use in Engineering Practice. for Larger-Amplitude Seismic …
Comparison Of Prestress Losses For Pedestrian Bridges Constructed With High-Strength Concrete And High-Strength Self-Consolidating Concrete,
2013
Missouri University of Science and Technology
Comparison Of Prestress Losses For Pedestrian Bridges Constructed With High-Strength Concrete And High-Strength Self-Consolidating Concrete, John J. Myers, Kurt E. Bloch
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Abstract Two precast prestressed high-strength concrete and high-strength self-consolidating concrete pedestrian bridges were designed and erected in Rolla, Missouri, for an in situ investigative study to monitor time-dependent losses. Using the temperature and strain data monitored by the vibrating wire strain gauges within the beam cross sections, time-dependent losses were determined and compared between the bridges and various empirical expressions presented by AASHTO and the Precast/Prestressed Concrete Institute. © 2013 American Society of Civil Engineers.
Distribution And Accumulation Of Trichloroethylene And Trichloroacetic Acid In Hybrid Poplars,
2013
Missouri University of Science and Technology
Distribution And Accumulation Of Trichloroethylene And Trichloroacetic Acid In Hybrid Poplars, Lucas Odom, Joel Gerard Burken, Lee Newman
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Hybrid Poplar Trees Are Known to Take Up Trichloroethylene (TCE) into above Ground Tissues, Where It Degrades into the Metabolites Trichloroacetic Acid (TCAA), Dichloroacetic Acid, and Trichloroethanol and Where Parent Chlorinated Solvents Volatilize to the Atmosphere. based on This Knowledge, Numerous Phytoremediation Applications Have Been Implemented for TCE and Other Chlorinated Solvents. Sampling of Plant Tissues Has Proven Effective for Phytoforensic and Phytoscreening Applications in Assessing Sites and Evaluating the Efficacy of Phytoremediation. However, Little is Known About the Appropriate Exposure Times and Sampling Locations Required to Obtain an Accurate Assessment of TCE and Metabolites. in This Study, Hybrid Poplars …
Numerical Simulation Of Vortex-Induced Vibration Of Two Circular Cylinders Of Different Diameters At Low Reynolds Number,
2013
Missouri University of Science and Technology
Numerical Simulation Of Vortex-Induced Vibration Of Two Circular Cylinders Of Different Diameters At Low Reynolds Number, Ming Zhao, Guirong Yan
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Two-Degree-Of-Freedom Vortex-Induced Vibration (VIV) of Two Rigidly Coupled Circular Cylinders of Different Diameters at a Low Reynolds Number of 250 is Investigated Numerically. While the Diameter Ratio and the Mass Ratio Are Kept Constant, the Study is Focused on the Effect of the Position Angle of the Small Cylinder on the Lock-In Regime of the VIV. Simulations Are Carried Out for Position Angles Α of the Small Cylinder Ranging from 0° to 180° with an Interval of 22.5° and the Reduced Velocities Ranging from 1 to 15 with an Increment of 1. in Order to Find the Effect of the …
Directional Phytoscreening: Contaminant Gradients In Trees For Plume Delineation,
2013
Missouri University of Science and Technology
Directional Phytoscreening: Contaminant Gradients In Trees For Plume Delineation, Matt A. Limmer, Mikhil K. Shetty, Samantha Markus, Ryan Kroeker, Beth L. Parker, Camilo Martinez, Joel Gerard Burken
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Tree Sampling Methods Have Been Used in Phytoscreening Applications to Delineate Contaminated Soil and Groundwater, Augmenting Traditional Investigative Methods that Are Time-Consuming, Resource-Intensive, Invasive, and Costly. in the Past Decade, Contaminant Concentrations in Tree Tissues Have Been Shown to Reflect the Extent and Intensity of Subsurface Contamination. This Paper Investigates a New Phytoscreening Tool: Directional Tree Coring, a Concept Originating from Field Data that Indicated Azimuthal Concentrations in Tree Trunks Reflected the Concentration Gradients in the Groundwater Around the Tree.To Experimentally Test This Hypothesis, Large Diameter Trees Were Subjected to Subsurface Contaminant Concentration Gradients in a Greenhouse Study. These Trees …
Dynamic Properties Of Fine-Grained Soils Engineered With A Controlled Organic Phase,
2013
Missouri University of Science and Technology
Dynamic Properties Of Fine-Grained Soils Engineered With A Controlled Organic Phase, B. Bate, H. Choo, S. E. Burns
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Soils with high organic content are frequently encountered beneath earthquake sensitive infrastructure, such as bridges or levees. Historically, the dynamic properties of these organically rich soils have been difficult to predict due to the heterogeneity of the natural organic matter that is found in natural soils, even though their response to dynamic loading remains critical to assessing the ongoing stability of the infrastructure. In this study, an experimental investigation was performed on a montmorillonite soil that was modified with a controlled organic phase. Quaternary ammonium cations were exchanged onto the soil particle surfaces through cation exchange with the clay's naturally …
How Kaizen Group Leader Selection Affects Group Participation,
2013
Western Kentucky University
How Kaizen Group Leader Selection Affects Group Participation, M. Joleen Byerline
Masters Theses & Specialist Projects
Organizational communication research indicates group member participation increases as the legitimate power differences among group members decreases. Lean principles and practices indicate Kaizen Event members will contribute regardless of legitimate power levels, due to member training, education, and the Lean team-oriented culture. Further study is needed to determine if Lean culture and training maximize group member contribution, or if legitimate power levels in Lean environments manipulate participation. The focus of this case study is a central Kentucky Lean manufacturing organization that practiced Lean principles for at least three years and completed a Kaizen Event within twelve months previous to the …
Relevance Of The Thorpe Length Scale In Stably Stratified Turbulence,
2013
Missouri University of Science and Technology
Relevance Of The Thorpe Length Scale In Stably Stratified Turbulence, Benjamin D. Mater, Simon M. Schaad, Subhas Karan Venayagamoorthy
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Direct numerical simulations of stably stratified turbulence are used to compare the Thorpe overturn length scale, LT, with other length scales of the flow that can be constructed from large-scale quantities fundamental to shear-free, stratified turbulence. Quantities considered are the turbulent kinetic energy, k, its dissipation rate, ε, and the buoyancy frequency, N. Fundamental length scales are then the Ozmidov length scale, LO, the isotropic large scale, Lkε, and a kinetic energy length scale, LkN. Behavior of all three fundamental scales, relative to LT, is shown to be a function of the buoyancy strength parameter NTL, where TL = k/ε …
Portable Pressure Device To Evaluate Lateral Formwork Pressure Exerted By Fresh Concrete,
2013
Missouri University of Science and Technology
Portable Pressure Device To Evaluate Lateral Formwork Pressure Exerted By Fresh Concrete, Ahmed F. Omran, Kamal H. Khayat
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Use of a reliable and accurate measuring system to determine lateral pressure exerted on formwork by self-consolidating concrete can lead to economic and safe formwork systems. In this paper, a portable and field-compatible pressure device is developed to enable factors affecting lateral pressure of fresh concrete on formwork system to be explored prior to conducting onsite full-scale tests. The pressure device requires a sample of 16 L of fresh concrete to determine lateral pressure envelope that can be exerted by a concrete column of up to 13 m in height. The pressure device enables the simulation of such concrete head …
Centrifuge Modeling And Mitigation Of Manhole Uplift Due To Liquefaction,
2013
Missouri University of Science and Technology
Centrifuge Modeling And Mitigation Of Manhole Uplift Due To Liquefaction, Gi Chun Kang, Tetsuo Tobita, Susumu Iai, Louis Ge
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Because low-compacted trench backfill around a manhole is normally liquefiable, the manhole could suffer uplift damage associated with soil liquefaction during a strong earthquake. In this study, 22 dynamic centrifuge models were tested to investigate the response of a buried manhole subjected to a dynamic load. The models were tested under 20g, and a substitute pore fluid was used to avoid the scaling law conflict between the dynamic and diffusion processes. It was found that excess pore water pressure is one of the contributing factors to the magnitude of the manhole uplift. Using this result, new mitigation methods against the …
Modified Time Of Setting Test For Fly Ash Paste And Fly Ash-Soil Mixtures,
2013
Missouri University of Science and Technology
Modified Time Of Setting Test For Fly Ash Paste And Fly Ash-Soil Mixtures, Xin Kang, Gi Chun Kang, Louis Ge
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
A survey of current literature has revealed that the testing protocol for determining the time of setting of fly ash-soil mixtures is not available. Although the current ASTM standard recommends using the Vicat needle method with a water-to-fly ash weight ratio of 0.35, it was originally proposed for testing the time of setting of cement. The current study showed that the Vicat needle method yielded poor test results for some common fly ashes. Moreover, the water-to-fly ash weight ratio of 0.35 may not be appropriate for some fly ashes because the chemical components are varied in different fly ashes. Therefore, …
Wind-Induced Torsion Vibration Of The Super High-Rise Building Of Shenzhen Energy Center,
2013
Missouri University of Science and Technology
Wind-Induced Torsion Vibration Of The Super High-Rise Building Of Shenzhen Energy Center, Feng Ruo-Qiang, Ye Jihong, Guirong Yan, Li Qing-Xiang, Yao Bin
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Synchronous Multipoint Scanning System Technique in Wind Tunnel Tests and Random Vibration Theory Method Were Used to Analyze the Wind-Induced Torsion Vibration of Some Irregularly Shaped Super High-Rise Buildings in Downtowns. the Torsion Vibration Modes and the Spectra of Torsion Wind Load Were Studied, and the Proportions of Mean Wind Torsion, Inertia Torsion and the Mass Eccentricity Torsion Caused by Horizontal Inertia Forces Are Discussed. the Following Conclusions Can Be Drawn. First, the Third and Fourth Modes Have Torsion Vibration Shapes, and their Frequencies Are in the High-Energy Area of the Spectra of the Torsion Wind Load; the Third …
Teaching Archtecture, Engineering And Construction Disciplines: Using Various Pedagogical Styles To Unify The Learning Process,
2013
California Polytechnic State University - San Luis Obispo
Teaching Archtecture, Engineering And Construction Disciplines: Using Various Pedagogical Styles To Unify The Learning Process, Jill Nelson, John W. Lawson
Architectural Engineering
The Architectural Engineering Department at the California Polytechnic State University, San Luis Obispo (Cal Poly) teaches introductory sophomore level statics and mechanics of materials courses to students in three departments in the College of Architecture and Environmental Design. These courses are unique in that students in the Architectural Engineering Department share coursework with students in the Architecture and Construction Management Departments. While learning and problem solving in these multidisciplinary courses have many advantages, they also offer many challenges. The learning preference of the students in these three distinctly different disciplines requires a fresh approach to the course structure. The courses …
A Structural Engineering Master's Program -- The Trials And Tribulations,
2013
California Polytechnic State University, San Luis Obispo
A Structural Engineering Master's Program -- The Trials And Tribulations, Cole C. Mcdaniel, Allen Estes
Architectural Engineering
This paper is specifically intended for the advertised session in the CE Division on “current issues affecting graduate CE programs such as double dipping, accreditation of masters programs, combined MS/BS degree, research versus practice oriented masters degrees, etc.” California Polytechnic State University in San Luis Obispo (Cal Poly) is a predominately undergraduate university. Cal Poly has recently expanded master’s level graduate programs to support advanced education and faculty-student professional development opportunities. The Architectural Engineering Department in the College of Architecture and Environmental Design (CAED) started a structural engineering master’s degree program six years ago and has graduated five separate classes. …
