Architectural Engineering Commons^™

Nonlinear Modeling Of A Sustainable Material, Jorien Gill Baza

Master's Theses

This study developed a nonlinear constitutive model for a sustainable orthotropic material. Existing methods for constitutive models of wood were improved upon to include the nonlinear stress-strain response not only in the two orthogonal axes but at any orientation to the strong axis of the material. This method also simplifies the nonlinear stress-strain relationships into bilinear stress-strain curves which can be valuable in hand calculations as well as finite-element analyses. The effectiveness of the proposed constitutive model is demonstrated by comparing bilinear stress-strain predictions to experimental data.

Interpretations Of Sustainability In Higher Education, Omidreza Saadatian

No abstract provided.

Culvert Material Cost Comparison, New England Environmental Finance Center

Water

The following tables provide a detailed look at the role that culvert material and culvert diameter play in the overall cost of a culvert replacement project.

An Investigation Of The Influence Of Diaphragm Flexibility On Building Design Through A Comparison Of Forced Vibration Testing And Computational Analysis, Blake Alan Roskelley

Master's Theses

An assessment of the validity of idealizing a concrete diaphragm as rigid was performed through the modal analysis of three existing buildings. Modal analysis was performed both by physical experimentation and computational analysis. Experimental determination of the mode shapes shows that two of the three buildings’ diaphragms exhibited flexible behavior. The experimental results were compared to computational analysis results and were shown to be similar, confirming that that the two building diaphragms are not rigid. As a standard, diaphragms with aspect ratios less than three are permitted to be idealized as rigid per ASCE 7-05. To determine the effect of …

Culvert Material Cost Comparison, New England Environmental Finance Center

Economics and Finance

The following tables provide a detailed look at the role that culvert material and culvert diameter play in the overall cost of a culvert replacement project. Table 1 displays the cost per foot purchase price arranged by diameter size for the various culvert materials that are currently available. Table 2 displays the average additional culvert pipe material cost (increased cost to upsize minus original in-kind replacement cost) that would be incurred when upsizing a given diameter of culvert with a 50 foot length by factors of: 200%, 250% and 300%.

Top Tips For Domestic Refurbishment, Joseph Little

Articles

1) It stands to reason that insulating a wall should not affect its strength or longevity, nor should it result in a buildup of moisture (inter-stitial condensation) or mould. However the Industry is currently gripped with a desire to insulate to the highest standard (U-value) at the lowest financial cost, as quickly as possible, with little thought of these issues. An appropriate, robust solution must take the original wall, the occupant’s health, the room’s function and even the building’s location into account.

Unlv Magazine, Tony Allen, Shane Bevell, Donna Mcaleer, Ched Whitney, Cate Weeks

UNLV Magazine

No abstract provided.

Urban Architecture For Rural East Africa: A Sustainable Solution, Craig Baltimore

Architectural Engineering

No abstract provided.

Integrating Air Handling Units In Office Buildings For High Performance, Yuebin Yu

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

This study investigates the thermal load features in office buildings and proposes an innovative Integrated Air Handling Unit (IAHU) concept in order to achieve energy savings with conventional office building air handling systems. The corresponding deduction of IAHU for an acceptable Indoor Air Quality (IAQ) and better energy performance is conducted. The system variables and constraints are analyzed in detail to understand the feasibility and operability of IAHU. The control logics and implementation methods are elaborated for typical system layouts. With an IAHU operation, the internal heat gain can be transferred from an interior region into an exterior region in …

New Code Changes Under The 2009 Ibc, John W. Lawson

Architectural Engineering

The evolution of building codes typically produce design provisions that are expected to create safer and more accurate designs. We as engineers expect building codes to advance the state of the art with each successive edition. The 2009 International Building Code (IBC) and the Building Code Requirements for Structural Concrete (ACI 318-08) have significant revisions affecting the design of tilt-up buildings, but in some cases not necessarily advancing the state of the art. For example, the latest ACI 318 edition is largely revising slender wall design back to match equations found in the old 1997 UBC. In addition, the latest …

Knowledge Transfer And Adobe Block, Craig Baltimore

Architectural Engineering

No abstract provided.

Lessons Learned In Sustainable Information And Technology Transfer Considering Culture And Resources, Craig V. Baltimore

Architectural Engineering

In terms of information and technology transfer, sustainability is defined as the ability for a society (or culture) to maintain and incorporate the information and technology in a long term manner without continued outside influence. When a major disaster occurs, like the recent Haiti earthquake, the good intentioned outside relief effort is often immediate with no lasting effects. For example, to have a new building built out of precast panels engineered and manufactured in the U.S., and erected with volunteers from outside of Haiti, will immediately provide for the local community. But will have the people learned in terms of …

Industry Participation In The Interdisciplinary Team Design Project Course Of A Master Of Architectural Engineering Program, Lauren M. Ronsse, Lily M. Wang, Clarence E. Waters

Durham School of Architectural Engineering and Construction: Faculty Publications

This is a case study of extensive industry participation in the capstone design course of the Master of Architectural Engineering program at the University of Nebraska – Lincoln. This course, entitled Interdisciplinary Team Design Project, pairs teams of professional engineers and students to provide mentoring, assessment, and feedback, as the students work on interdisciplinary teams to design the building systems for a real-world project. For the spring 2010 semester, over 33 industry professionals participated in the course, each contributing approximately 40 to 50 hours of mentoring and assessment. This paper describes the course format and industry involvement, which provides students …

Performance Comparison Of Control Methods For Tankless Water Heaters, David P. Yuill, Andrew H. Coward, Gregor P. Henze

David Yuill

Tankless water heaters (TWH) have several advantages and disadvantages when compared with storage water heaters. One disadvantage is that the outlet temperature of the water is difficult to control. To address this problem, the authors apply seven different control approaches and con- duct experiments to test the effectiveness of each approach. The experiments are carried out on a commercially available electric TWH, using a test method and apparatus developed by the authors. The seven approaches include various configurations of feedback or feed-forward con- trol, or both. One fairly simple approach devised in this project combines feedback and feed-forward control. This …

Investigation Of Patient Perception Of Hospital Noise And Sound Level Measurements: Before, During, And After Renovations Of A Hospital Wing, Cassandra H. Wiese

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

Acoustic conditions in hospitals have been shown to influence a patient’s physical and psychological health. Noise levels in an Omaha, Nebraska, hospital were measured and compared between various times: before, during, and after renovations of a hospital wing. The renovations included cosmetic changes and the installation of new in-room patient audio-visual systems. Sound pressure levels were logged every 10-seconds over a four-day period in three different locations: at the nurses' station, in the hallway, and in a nearby patient’s room. The resulting data were analyzed in terms of the hourly A-weighted equivalent sound pressure levels (𝐿_𝐴eq) as …

Multi-Channel Orchestral Anechoic Recordings For Auralizations, Michelle C. Vigeant, Lily M. Wang, Jens Holger Rindel, Claus Lynge Christensen, Anders Christian Gade

Durham School of Architectural Engineering and Construction: Faculty Publications

Multi-channel orchestral anechoic recordings were obtained at the Technical University of Denmark (DTU) in June 2005. Every orchestral part of specific movements of two symphonies, Brahms’ Symphony No. 4, 3rd movement, and Mozart’s Symphony No. 40 in g minor, 1st movement, were digitally recorded using five 0.5” DPA microphones, with four surrounding the musicians in the horizontal plane and the fifth directly above. The recordings were made in DTU’s large anechoic chamber, which has free space of about 1000 m3 and a lower frequency limit of 50 Hz. Each musician was recorded individually, and to assist with overall synchronization of …

Examining The Relationships Between Monaural And Binaural Classroom Acoustics Parameters And Student Achievement, Lauren M. Ronsse, Lily M. Wang, Paul L. Sim

Durham School of Architectural Engineering and Construction: Faculty Publications

This study investigates the relationships between several classroom acoustics parameters and student achievement. Detailed binaural room impulse response measurements were conducted in four elementary school classrooms in a midwestern public school system in the United States. Unoccupied background noise levels were also recorded in these spaces. Previous studies have compared how different room acoustics metrics predict speech intelligibility, while another investigation examined perception-based binaural metrics in a typical classroom. This study extends these previous research areas by comparing both binaural classroom acoustics metrics and unoccupied background noise levels to each other and to the standardized student achievement scores of students …

Intricacies Of Professional Certifications For Quality Management (Qm), Edmund R. Martelli

Masters Theses & Specialist Projects

The modern manufacturing marketplace is extremely complex and constantly changing. Career professionals often seek job placement, career advancement, and continuing education through professional certifications. Professional certifications in the United States (U.S.) have been evolving since 1911. In the 1950s, engineering groups established professional certifications and licenses. In the 1980s, administration of accreditation of certification programs proliferated, and by the 1990s, many government and professional organizations sought to standardize procedures for the industry. Currently, professional certifications are available for virtually every profession and issued by multitudes of organizations.

Quality management (QM) encompasses an extensive combination ofprofessional abilities. Providers of professional certifications …

Transformation Of Industrial Space, Xin Jia

Masters Theses

By the 1970s the international markets had begun to change and the region’s industries were becoming less competitive. Mines began to close. Factories that had operated night and day fell silent. Their gates closed and they became “brownfield” sites in need of restoration.

For the over past 20 years, city planners regenerated these derelict industrial lands in different ways especially focus on renaturalizing them. Less attention is being paid to them as active and strategic roles in contemporary affairs. Today, people’s thinking about this issue demands more the character of sentimental stimulus- for either the re-creation or preservation of past …

Cyber-Physical Codesign Of Distributed Structural Health Monitoring With Wireless Sensor Networks, Gregory Hackmann, Weijun Guo, Guirong Yan, Chenyang Lu, Shirley Dyke

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Our Deteriorating Civil Infrastructure Faces the Critical Challenge of Long-Term Structural Health Monitoring for Damage Detection and Localization. in Contrast to Existing Research that Often Separates the Designs of Wireless Sensor Networks and Structural Engineering Algorithms, This Paper Proposes a Cyber-Physical Co-Design Approach to Structural Health Monitoring based on Wireless Sensor Networks. Our Approach Closely Integrates (1) Flexibility-Based Damage Localization Methods that Allow a Tradeoff between the Number of Sensors and the Resolution of Damage Localization, and (2) an Energy-Efficient, Multi-Level Computing Architecture Specifically Designed to Leverage the Multi-Resolution Feature of the Flexibility-Based Approach. the Proposed Approach Has Been Implemented …

Liquefaction Study Of Heterogeneous Sand: Centrifuge, Pradipta Chakrabortty, Radu Popescu, Ryan Phillips

Architectural Engineering

From past numerical research and small scale laboratory tests, it has been observed that more excess pore water pressure (EPWP) is generated during earthquakes in a heterogeneous sand deposit than in the corresponding homogeneous sand with relative density equal to the average relative density of the heterogeneous sand. This interesting phenomenon is investigated here in large scale experiments using geotechnical centrifuge modeling techniques. A series of liquefaction tests have been conducted at C-CORE’s geotechnical centrifuge facility: Two on variable sand and one on uniform sand deposits. A one level frame structure resting on two strip footings was also placed on …

Interdisciplinary Design: The Good, The Bad, And The Ugly, Jill Nelson, Brent Nuttall, Allen Estes

Architectural Engineering

Today’s students are faced with far different challenges upon graduation than those encountered in past years. One of the most significant of these challenges is the need to work within the framework of integrated project delivery where all disciplines work as a cohesive team to produce a project. In 2004, the Construction Management Department at California Polytechnic State University in San Luis Obispo,CA began teaching a three credit hour design/build course focused on integrated project delivery. That course, taught primarily to construction management students, has now evolved into a true interdisciplinary experience that is taught in a team environment by …

Gender Representation In Architectural Engineering - Is It All In The Name?, Pamalee Brady, Allen Estes

Architectural Engineering

Under-representation of women in engineering is of concern as the decreasing supply of qualified engineers continues to plague the nation’s advancement. Understanding what factors influence choices of engineering disciplines has the potential for altering education to accommodate a more diverse student body that can be successful in engineering. University statistics reflect that the Architectural Engineering program at this school is comprised of 35% women, while the other engineering programs attract at best 20% women and at worst 5% women. The Architectural Engineering program at this university is in fact one of the most intense structural engineering programs in the country …

Exceed Ii: Advanced Training For Even Better Teaching, Debra Larson, Allen Estes, Norman Dennis, Ronald Welch, Carol Considine

Architectural Engineering

In 2007, the American Society of Civil Engineering’s Committee on Faculty Development (CFD) conducted a longitudinal survey of all the past participants of the ExCEEd Teaching Workshop (ETW). The CFD received 173 responses, representing 40% of the ETW population at that time, to its survey about skills and the long term value of ETW. Important to this paper, 73% of the survey respondents said that they were interested in attending a post, advanced ETW. Motivated by these survey results, the CFD began its planning for a pilot ExCEEd II workshop during the 2008-2009 academic year. In the summer of 2009, …

Structural Damage Detection Robust Against Time Synchronization Errors, Guirong Yan, Shirley J. Dyke

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Structural Damage Detection based on Wireless Sensor Networks Can Be Affected Significantly by Time Synchronization Errors among Sensors. Precise Time Synchronization of Sensor Nodes Has Been Viewed as Crucial for Addressing This Issue. However, Precise Time Synchronization over a Long Period of Time is Often Impractical in Large Wireless Sensor Networks Due to Two Inherent Challenges. First, Time Synchronization Needs to Be Performed Periodically, Requiring Frequent Wireless Communication among Sensors at Significant Energy Cost. Second, Significant Time Synchronization Errors May Result from Node Failures Which Are Likely to Occur during Long-Term Deployment over Civil Infrastructures. in This Paper, a Damage …

Activating Infrastructure, Joanna T. Myers

Honors Capstone Projects - All

“The City Implant is an urban design project that can be used to strengthen an existing center or create a new one. It is a spatial and programmatic upgrade that gives an area the status of a center or increases the density of an existing center. Rather than intervening in undeveloped land, a City Implant should be a transformer of empty land and even under-exploited traffic junctions. A City Implant should describe the quality of centrality itself.” Alex Wall “Boomtown v. Regiocity: Thinking and designing or the Networked City Region.” (Almy, 286)

Transportation infrastructures across the United States create issues …

Theatre For A New Theater: A Play On Architecture, Alexander Coulombe

Honors Capstone Projects - All

Not Included

[Dis]Lodge; A Transformation Of The Ski Lodge In Response To Function And Site, Jacob E. Schneck

Honors Capstone Projects - All

Over the past century skiing has experienced remarkable growth in popularity, equipment and technique. From 1946 to the present the number of ski resorts in North America with operating lifts has grown from 15 to over 600. During this time skiing has developed from a means of winter travel into a sport that combines paramilitary precision and control with leisure. Driven by economic interests and the superficial imitation of European alpine architecture the contemporary ski lodge model has failed to meaningfully address these changes and has failed to address function and context in terms of both its formal organization and …

Replacing Workplace Leadership With Political Expediency, Mark Daniel Leonhardt

Masters Theses & Specialist Projects

The study examines the adherence to principled leadership styles by persons in position of authority and develops a method to determine the extent to which those people deviate from principled leadership practices for purpose of political expediency. Two fortune 500 companies, three smaller local companies and select Western Kentucky University faculty were surveyed using the MACH V Attitude Inventory for determining Machiavellian tendencies via an online survey site. An examination and evaluation of survey results yielded a surpirsingly consistent neutral score, but no indication of Machiavellian tendencies within the respondent group.

Determination Of Material Emission Signatures By Ptr-Ms And Their Correlations With Odor Assessments By Human Subjects, Kwanghoon Han

Kwanghoon Han

The objectives of this study were to determine volatile organic compound (VOC) emission signatures of nine typical building materials by using proton transfer reaction-mass spectrometry (PTR-MS) and to explore the correlation between the PTR-MS measurements and the measurements of acceptability by human subjects. VOC emissions from each material were measured in a 50-l small-scale chamber. Chamber air was sampled by PTR-MS to determine emission signatures. Sorbent tube sampling and TD-GC/MS analysis were also performed to identify the major VOCs emitted and to compare the resulting data with the PTR-MS emission signatures. The data on the acceptability of air quality assessed …