Architectural Engineering Commons^™

A Method For Selecting Hvac Retrofit Solutions For Existing Small- And Medium-Sized Commercial Buildings, Bonggil Jeon

Open Access Dissertations

The primary purpose of the present study is to develop a framework and methodology for evaluating appropriate Heating, Ventilating, and Air Conditioning (HVAC) retrofit solutions that can be effectively retrofitted into different types of small- and medium-sized commercial buildings (SMSCB). Additionally, development of an advanced data-driven decision-making tool is introduced as a benefit of proposed framework. In recent years, considerable attention has been focused on retrofits of existing commercial buildings (IBE, 2013b). In fact, the Commercial Building Energy Consumption Survey (CBECS) 2003 (EIA, 2006) indicates that over 70% of existing commercial buildings across the United States are more than twenty …

Investigation Of Subjective Perception And Objective Metrics Of Acoustic Room Diffusion, Jay Michael Bliefnick

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

While a variety of assessment methodologies have been proposed to quantify acoustic diffusivity within rooms, a link between these and the perception of diffusion has not been fully established. This study investigated various ways of analyzing diffusion, through both human perception and objective metrics. Numerous impulse response measurements were collected from a physical acoustics testing facility designed for diffusion research. This space featured reversible absorptive/diffusive/reflective wall panels, which allowed numerous testing configurations. One such setup investigated how changing the diffusivity of an isolated wall surface impacted diffusive room conditions. Alternatively, the effects diffuser configurations had on diffusive room conditions were …

The Mustang Sculpture, Natalie Gibbons, Jordan Gates

Architectural Engineering

No abstract provided.

Long Beach Remodel, John Hinrichs

Architectural Engineering

No abstract provided.

An Investigation Of Dx Cooling Coil Inherent Characteristics, Krittima Santiwattana

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

DX cooling coil (DCC) systems have dominated light commercial and household applications in the U.S for several decades. Approximately 14.5% of energy use is consumed by space cooling in commercial buildings, whereas 87% of households are installed with air-conditioners. Improper installation, poor design, and lack of optimized control/operations incur faults in HVAC systems causing 25% to 50% energy waste in a building. These consequences are subject to inefficient equipment modelling of which is developed from: (1) insufficient understanding in equipment characteristics, (2) uncertainties in testing environment and data, and (3) access and cost limitations. Therefore, in this thesis DCC inherent …

Dermal Uptake Directly From Air Under Transient Conditions: Advances In Modeling And Comparisons With Experimental Results For Human Subjects, G. C. Morrison, C. J. Weschler, G. Bekö

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

To better understand the dermal exposure pathway, we enhance an existing mechanistic model of transdermal uptake by including skin surface lipids (SSL) and consider the impact of clothing. Addition of SSL increases the overall resistance to uptake of SVOCs from air but also allows for rapid transfer of SVOCs to sinks like clothing or clean air. We test the model by simulating di-ethyl phthalate (DEP) and di-n-butyl phthalate (DnBP) exposures of six bare-skinned (Weschler et al. 2015, Environ. Health Perspect., 123, 928) and one clothed participant (Morrison et al. 2016, J. Expo. Sci. Environ. Epidemiol., 26, 113). The model predicts …

A Generic Benchmark For A Mini-Split Heat Pump System, Yuchen Wang

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

Heating, Ventilation, and Air Conditioning (HVAC) accounts for half of the building energy consumption in the U.S where Mini-Split Heat Pumps (MSHPs) are an emerging type of HVAC system. Their utilization has greatly increased by 34% from 2009 to 2013 and high potential EER is recognized for MSHPs. However, there is limited research involving MSHPs systems, and there is no generic benchmark for system testing and modeling. The available simulation tools such as VapCyc, GreatLab, and CYCLE_D are either too complicated, difficult to access, or not freely available. Therefore, an accurate and public share generic benchmark is essential and will …

Appraisal Of The Sustainability Of Compressed Stabilized Earthen Masonry, Elena Claire Hoff

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

Compressed stabilized earthen block (CSEB) masonry presents an environmentally and economically sustainable alternative to conventional residential construction materials such as clay brick masonry or concrete masonry (CMU). Earthen masonry is locally sourced and manufactured on site, thus minimizing costs associated with raw material extraction and transportation. Furthermore, CSEB requires very little use of electricity and water during both the manufacture and construction processes and it has excellent thermal resistivity while in use, allowing for additional cost and energy savings during most phases of its life cycle. Analyzing the life cycle trade-offs in a comparative study between CSEB and clay brick …

Shear Wave Velocity And Its Anisotropy Of Polymer Modified High-Volume Class-F Fly Ash-Kaolinite Mixtures, X. Kang, B. Bate

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This study investigated the effects of polymers on the small-strain stiffness behavior of high-volume Class-F fly ash-kaolinite mixtures. The shear wave velocity (Vs) and its anisotropy of organically modified fly ash-kaolinite mixtures were evaluated using a self-developed floating wall type consolidometer bender element (BE) testing system. Both synthetic polymers [polyethylene oxide (PEO)] and biopolymers (xanthan gum and chitosan) were used to modify the stiffness of fly ash-kaolinite mixtures. Shear waves generated and received by bender elements were measured to quantify the small-strain stiffness of the organically modified fly ash-kaolinite mixtures in three orthogonal directions, i.e., vh, hv, and hh. The …

Impact Of Cross Section, Web Reinforcement And Load History On The Seismic Performance Of Slender Concrete Walls, Anahid A. Behrouzi

Architectural Engineering

Many reinforced concrete buildings in seismic regions employ reinforced concrete shear walls as part of the lateral force resisting system and these walls often have non-planar cross-sectional geometries. To date, the majority of experimental tests on slender concrete walls have been conducted on planar walls which have been subject to low shear stress demands. An experimental program was developed to examine the response of flanged C-shaped walls with respect of load history and a computational parametric study was conducted to focus more specifically on the impact of web reinforcement for walls subject to a range of shear stress demands.

The …

Research And Study Of Fashion And Costume History Spanning From Ancient Egypt To Modern Day, Kaitlyn E. Dennis Miss

Posters-at-the-Capitol

Through a generous donation to Morehead State University, research has been conducted on thousands of slides containing images of artwork and artifacts of historical significance. These images span from Egyptian hieroglyphs to the inaugural dress of every first lady of the United States. The slides are in the process of being recorded and catalogued for future use by students in hopes of furthering academic comprehension and awareness of the influence of fashion and costume history through the ages. Special thanks to the family of Gretel Geist Rutledge, faculty mentor Denise Watkins, as well as the Department of Music, Theatre, and …

How Acoustics In California High Performance Schools Relate To Student Achievement, Devin K. Wong

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

This research project seeks to determine if students attending K–12 schools meeting a minimum standard of high performance classroom conditions in the state of California do evidence higher scholastic achievement, based on publically available results on state-wide standardized tests. In three phases, a subset of 200+ schools applying for grants dedicated to building high performance schools over the past decade was correlated with an existing database of achievement scores for all public schools in California. The criteria utilized to specify high performance classrooms was provided by the California High Performance Initiative (HPI) Grant program. Academic achievement was evaluated on a …

Touch Of Nature - Design Build, Katlyn Montague

ASA Multidisciplinary Research Symposium

Touch of Nature, an educational facility that’s goal is to enhance learning of the natural environment, hired our Architecture Building Technology class to design and build several educational kiosks located along the Rocky Ledges Trail. These kiosks included signage that will educate hikers on the environment around them.

Buildings As An Assembly Of 3d Printed Components, Stephen S. Lauer

ASA Multidisciplinary Research Symposium

This project aimed to design a series of components that would be assembled to become a house. The design is a house that is printed in a series of modules and assembled using a series of printed connectors for not only attaching the modules but also used in other various details.

The Making Of A Rain-Induced Roof Collapse And The Lessons Learned For Our Profession, M. E. Parolini, John Lawson

Architectural Engineering

Using a recent rain-induced roof collapse as a forensic case study, the authors will demonstrate a number of vital points of interest in the collaboration between structural engineers and other design disciplines. Citing a number of problems with the building’s design and the current code standards, this paper will investigate the avoidable events that led to a costly failure of the roof structure presented. As the practice of each construction design profession has become more specialized, communication among those professions on many overlapping design choices has eroded from common practice. This is true for one such area where multiple disciplines …

Plastic Fantastic: The Fiberglass Boatbuilding Industry In Holland, Michigan, Geoffrey D. Reynolds

Faculty Publications

Plastic Fantastic: The Fiberglass Boatbuilding Industry in Holland, Michigan is a chapter concerning the use of fiberglass reinforced plastic (FRP) to build boats starting in the 1940s. In the 1950s boat builders discovered that fiberglass would allow them to design boats that would lead to new boat sales and increased profit margins for years to come. This technology steadily spread throughout American boat manufacturing plants, including Holland, Michigan, placing the town among the leaders in the industry.

The Bridge Newsletter Winter 2016, Missouri University Of Science And Technology

The Bridge Newsletter

-World's only cold-formed steel conference
-2016 Alumni of Influence
-National intelligence leader speaks
-Senne Memoria

Elastic Field And Frequency Variation In Extendable Wind Turbine Blades, Jeswin John, Donald W. Radford, Subhas Karan Venayagamoorthy, Paul R. Heyliger

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The behaviors of tip displacement, maximum stress, and natural frequency of vibration as a function of blade length are investigated for extendable wind turbine blades. A three-dimensional linear elasticity finite-element model of the blade is used along with a typical profile and representative material properties. The quasi-linear response and free vibration behavior are investigated for a sequence of blade geometries. These estimates are intended to give approximate measures of expected changes in the elastic and dynamic field as the operating length changes and provide preliminary guidelines for this novel class of structure.

Case Study Of Quantifying Energy Loss Through Ceiling-Attic Recessed Lighting Fixtures Through 3d Numerical Simulation, Ri Na, Shengmao Lin, Zhigang Shen, Linxia Gu

Department of Mechanical and Materials Engineering: Faculty Publications

Abstract Air leakage through recessed lighting fixtures has been identified as a common issue that causes extra energy consumption in residential buildings. However, few quantitative studies in this area were found. As such, a preliminary assessment of the magnitude of this type of energy loss was conducted by using three-dimensional (3D) transient computational fluid dynamics (CFD) models. A hypothetical layout of recessed lighting fixtures was designed with boundary conditions of four different seasons, which were obtained from recorded roof/attic temperature data sets. The results of the study indicate that leakage of recessed lighting fixtures could be a significant channel of …

Appendix To The Minutes Of Evidence: Taken Before The Lords Committees To Whom The Bill Intituled "An Act For Improving The Approaches To London Bridge," Was Committed, City Liberal Club

The Wilbur & Sara Ruth Watson Bridge Book Collection

In 1829 legislation was submitted to the British Parliament, regarding improvements to the approaches to London Bridge. Referred to a Lord’s Committee, a report was issued, this being the appendix of exhibits offered in support. Note especially the maps at the end of the report. The original book, offered as an e-book here, is housed in the Wilbur J. & Sara Ruth Watson Bridge Book Collection, in Special Collections of the Michael Schwartz Library of Cleveland State University.