Architecture Commons^™

Dead End Urban Corridors: Reconnecting Urban Space, Molly Macklin

Architecture Masters of Science Program: Theses

This proposal seeks to look at urban renewal through the analysis of main street thoroughfares that weave through the urban fabric connecting neighborhoods and people as vital life-lines within cities. How does history, culture, economics, and existing infrastructure feed these corridors? And what happens when this artery is blocked by development?

Specifically, this thesis is focused on exploring a non-urban oriented, dead-end corridor typology that has been forced onto the urban main street resulting in an area that has become blighted, underutilized, and disconnected from the surrounding urban environment.

The main argument is aimed at critiquing overlaying typologies onto …

Optimizing The Urban Landscape, Kristin S. Harbert

Architecture Masters of Science Program: Theses

While road infrastructure is at the forefront of the thesis, patterns of Omaha’s road history were studied to get an understanding of the deeper issue. The research suggested that the problem with road infrastructure is largely based in the creation of arterial streets. Wid­ening roads and creating additional arterial streets initially reduces costs and reduces delays, however the perceived benefits are far less than the actual cost: more home-sprawl, more business-sprawl, more big-boxes, more strip malls, new construction, more cars. On the other hand, if the congestion can be managed rather than cre­ating arterial streets, the opposite occurs: initial increased …

Altruistic Infrastructure, Derik Eckhardt

Architecture Masters of Science Program: Theses

The evolution and expansion of cities necessitates a concurrent proliferation of the modern tools of growth. These tools, or infrastructure, are currently programmed to perform one functional operation, when in reality their presence alone brings forth consequences in our urban fabric. That is, they mark, divide, and obstruct movements in the city while simultaneously creating peripheral spaces of marginality. Furthermore, in developing countries cities struggle to expand while providing adequate infrastructure. The provision of infrastructure has the opportunity to be an architectural contribution beyond the current model of idiosyncratic structures.

How do pieces of infrastructure adapt to provide more than …

Place [For] The Children, Heather Hudson

Architecture Masters of Science Program: Theses

Due to changing social and economic trends, enrollment in child care has become customary for the large majority of children under the age of five in the U.S. Although the importance of the early years has slowly begun to gain more recognition, early childhood development and education is still not viewed as the imperative societal issue that it demands. As the widespread environment for raising children in the U.S. has gradually moved from the informal atmosphere of the home to the formal settings of a child care center, the impact of the built environment on children’s development has often been …

Intermodal | Multimodal, Adam J. Andrews

Architecture Masters of Science Program: Theses

The intent is to confront waste on both a global and local level using architecture to engage and educate the public. Global waste, in this case, is defined as intermodal containers and local waste is defined as municipally collected solid waste. I intend to show through my designs that architecture need not be the source of yet more energy use and material waste. Instead, design can be the vehicle through which we begin to lessen our impact on Planet Earth by reusing the materials already at hand to create architecture and energy.

A waste to energy approach [both architectural and …

Interior Designer's Attitudes Toward Sustainable Interior Design Practices And Barriers Encountered When Using Sustainable Interior Design Practices, Leigh Bacon

Architecture Masters of Science Program: Theses

The objectives of this study evaluated whether interior designer’s had a positive or negative attitude toward sustainable interior design practices. Next, it evaluated the three areas of perceived barriers interior designers encounter when using sustainable interior design practices (project capabilities, transition to sustainability, and knowledge and skills associated with sustainable design). The final objectives determined if attitudes and barriers affected the use of sustainable interior design practices, and determined whether the attitudes of interior designers and the barriers encountered by interior designers were related. Overall, attitudes toward sustainable interior design practices were positive. Barrier scores indicated that factors affecting project …

Walkability, Social Interaction, And Neighborhood Design, Theresa A. Glanz

Community and Regional Planning Program: Theses and Student Projects

Typically suburban neighborhoods within the United States are often not pedestrian friendly especially when it comes to destination walking. Since the 1980s New Urbanists have been working on developing neighborhoods that not only allow people to walk for leisure but also allow the residents to walk to nearby shopping and public spaces. These increases in opportunities for walking can enhance people’s lives through improved health, reduction in financial outputs for fuels, enhancement of the physical environment through reductions in carbon monoxide, and the potential for increased social capital through accidental and intentional social opportunities. This paper discusses neighborhood design as …

Inform Form Perform, Nathaniel Holland

Architecture Masters of Science Program: Theses

Architecture as a profession has always concerned itself with finding beauty in built forms. In the digital age beauty is changing; information controls our lives and true beauty is found in the way we interpret it. Architects have developed and employed parametric design strategies to both interpret this information and increase their production. Though these strategies have improved architectural design, they are not being used to their full extent in the design process. I propose taking the use of computers in aiding architectural design one step further; site information and program data should INFORM the project, driving the creation of …

Investigations Of The Relationships Between Unoccupied Classroom Acoustical Conditions And Elementary Student Achievement, Lauren M. Ronsse

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

Current building standards recommend specific unoccupied background noise levels and reverberation times for classroom spaces. While clear communication in elementary school classrooms may be critical for successful learning environments, the existing research does not show a consistent connection between the classroom acoustics parameters specified in building standards and student achievement. This research seeks to determine what acoustical conditions should be attained in elementary school classrooms to optimize student achievement.

In this dissertation, acoustical studies in two midwestern United States public school systems are described. Unoccupied background noise level (BNL) and reverberation time (RT) measurements were gathered in a range of …

Adaptive Photovoltaic Configurations For Decreasing The Electrical Mismatching Losses, Mohamed Amer Chaaban

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

Electrical mismatching losses in photovoltaic systems are of great interest to system designers. In this thesis, an adaptive photovoltaic (PV) system is proposed based on novel flexible switch matrixes that form different possible topologies. This system maximizes the generated power in real-time for utility interactive systems in a modified inverter configuration. The proposed system uses fewer components and achieves maximum efficiency during shading and module mismatches by reconfiguring the PV modules based on real-time solar insolation, current operational conditions, and maximum efficiency criterion. Simulation tools are used to demonstrate that the proposed topologies provide improvement in efficiency over existing traditional …

Real-Time Power Monitoring, Home Automation And Sustainability, Wisam Nader

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

As the supply and demand of electrical energy is challenged within the context of environmental awareness and national security, the need to evaluate and advance each side is growing in importance. The electrical distribution system plays a critical role in the built environment as it is an enabling product, an intangible necessity used to power our systems. In order to manage our energy and prevent the consequences caused by energy wastage we need to develop tools for the built environment to become elastic with its consumption to respond to the national smart grid. To advance the research in this field, …

Bim Applications In Conceptual Design Phase: Exploring The Abilities And Limitations Of Autodesk Revit Architecture Through The Generative Geometric Design Approach, Sara Ben Lashihar

Architecture Masters of Science Program: Theses

Autodesk Revit Architecture as one of BIM applications has shown recent improvements in creating complex forms in conceptual design phase. These improvements have been published lately in reports (Autodesk 2010; Autodesk 2009) and books (Krygiel et al. 2010). The presented abilities were introduced within a general scope, and they were not examined in detail with various generative design approaches. The generalization and the ambiguity of these publications lead designers to avoid using Revit in conceptual design phase, and use other 3D modeling softwares that are more compatible with their way of thinking.

This thesis examines the abilities and limitations of …

Defining Excellence In Healthcare Design: The Role Of Personal Qualities, Roger J. Vitello

Interior Design Program: Theses and Other Student Work

Healthcare design has been recognized as a legitimate area of specialization[1], a field. Expertise in the healthcare design and building process is needed. Where and how future healthcare design practitioners will be educated remains a challenge. While the evolution of research-based design for health facilities has grown since the 1980s little is known about how healthcare designers should be educated. [2] An understanding of personal qualities a graduating student is expected to possess is important to their education. [3] Knowledge about the qualities that determine excellence in healthcare design practice is sparse. By understanding which qualities have been …

How Architectural Ruins Entice The Observers' Engagement: The Hermeneutical Function Of Distanciation, Rumiko Handa

Architecture Program: Faculty Scholarly and Creative Activity

During my recent trip to England, at a dinner at a friend's house, I met a violinmaker based in London. 1 mentioned that I had assigned my students to design a workshop and small performance space for a well-known American violinmaker, who at that time had a workshop in a small town in Nebraska, not far from where 1 teach. The London violinmaker told me he was organizing people to work on a museum dedicated to violin making. After telling us how he eventually will have a place to display and even to let visitors listen to some rare and …

Impacts Of Static Pressure Reset On Vav System Air Leakage, Fan Power And Thermal Energy- Part 1: Theoretical Model And Simulation, Mingsheng Liu, Jingjuan Feng, Zhan Wang, Lixia Wu, Keke Zheng, Xiufeng Pang

Durham School of Architectural Engineering and Construction: Faculty Publications

As for a variable air volume (VAV) System, the air duct static pressure is a typical control variable maintained by modulating supply fan speed. The static pressure equals to the summation of the duct pressure loss downstream of the sensor to the terminal box and box inlet static pressure. Typically, the air duct static pressure is set as a constant set point based on the system design information and sensor location. However, under partial load conditions, the terminal dampers have to be closed more since the required airflow which directly leads to much less pressure loss. This the static pressure …

Application Of Wireless Sensor Network (Wsn) Technologies In Optimal Static Pressure Reset In Variable Air Volume (Vav) System, Keke Zheng, Haorong Li, Huojun Yang

Durham School of Architectural Engineering and Construction: Faculty Publications

Optimization of the static pressure reset is always critical in the pursuit of maximum savings of fan power and thermal energy consumption in a VAV system. This paper theoretically investigated three static pressure reset methods, i.e. VAV terminal unit damper position based, outside air temperature based and air flow based, and proposed an optimal static pressure reset method. Subsequently, hourly simulations of a building in Omaha, Nebraska, USA, was implemented and validated that the VAV system with the optimal reset method could consume the least fan energy without sacrificing thermal comfort. Furthermore, in consideration of typical advantages or wireless technologies …

Economizer Control Using Mixed Air Enthalpy, Jingjuan Feng, Mingsheng Liu, Xiufeng Pang

Durham School of Architectural Engineering and Construction: Faculty Publications

Enthalpy economizer can theoretically save more energy than temperature based economizer. However, the requirement of outdoor air humidity measurement in the traditional enthalpy economizer control made it impossible. A novel control sequence using mixed air enthalpy is developed in the paper. Both theoretical and experimental investigation shows that humidity measurement in mixed air duct is very reliable, and the proposed method can achieve true enthalpy economizer saving. A case implementation shows 15.7% more energy saving than temperature based economizer in Omaha, NE.

Parametricism (Spc) Acadia Regional 2011 Conference Proceedings, Janghwan Cheon, Steven Hardy, Timothy Hemsath

Architecture Program: Faculty Scholarly and Creative Activity

In today’s computer savvy world it is no longer interesting to discuss digital tools purely as means in themselves. The growth of abstract exponential systems or the generation of modulated patterns for their own sake simply strain justification in light of real-world concerns such as climate change, decaying cities, and economic crises. However, the impact of explicit logic and computational thinking on design and design process remains substantial. So we continue to pursue evolving digital techniques in hope that they prompt innovative design strategies and creative organizational, effectual, or material innovations that align with the evolving technologies which shape contemporary …

Decon | Recon: Design Strategies For Repurposing Materials, Timothy Hemsath, Lindsey Ellsworth

Architecture Program: Faculty Scholarly and Creative Activity

The deconstruction (DeCon) and repurposing (Re- Con) of existing structures and materials are worth- while and relevant endeavors given the potential for such procedures to be more economically and environmentally sustainable than conventional construction methods. Conventional construction methods often utilize virgin materials for produc- tion of architecture requiring extensive energy to harvest, process and manufacture the materials for use. Today we must face the fact that we exist in a carbon sensitive economy, and demand design approaches that reduce architecture’s impact on the environment. Our pedagogical goal was to de- velop a project framework to enable flexible ReCon design methodologies …

A Virtual Supply Airflow Rate Meter In Rooftop Air Conditioning Units, Daihong Yu

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

Virtual sensing technology aims to estimate difficult to measure, expensive, or new quantities by using multifarious mathematical models along with non-invasive and low-cost measurements. Such embedded intelligence is a key to improving the performance of building systems in terms of functionality, safety, energy efficiency, environmental impacts, and costs. Considering the progress that has been achieved over many various fields (e.g., process controls, automobiles, avionics, autonomous robots, telemedicine) within the last two decades, numerous intelligent features have been incorporated and enabled that would otherwise not be possible or economical.

To identify the potential opportunities and research/development needs of virtual sensing technology …

"Introduction" To Conjuring The Real: The Role Of Architecture In Eighteenth- And Nineteenth-Century Fiction, Rumiko Handa, James Potter

Architecture Program: Faculty Scholarly and Creative Activity

Buildings give an immediate presence to the historical or fictional world, which otherwise is unknown or unfamiliar to the audience. The portrayal of a building’s concrete and specific substance makes the world come alive, although the building itself is a mere segment of the world that it represents. This book will trace the genealogy of this representational role of architecture, going back through the history of film and then further in literature, art, and theater, and identify its pedigree in the nineteenth century, where authors, artists, and stage managers used thorough depictions of buildings to effectively feed the audience’s historical …

Developing A Drought Planning Evaluation System In The United States, Mark D. Svoboda, Zhenghong Tang

Community and Regional Planning Program: Faculty Scholarly and Creative Activity

Drought is a normal part of the climate cycle, affecting every climate regime on the planet. Drought indicates a special period in which an unusual moisture scarcity causes a serious hydrological imbalance. Drought is related to the timing and effectiveness of the rains, high temperature, high wind, and low humidity. The typical impacts of drought may include dry lands, low or empty water-supply reservoirs, low groundwater levels (dried up wells), crop damage, and ensuing environmental degradation. In the United States, drought accounts for losses in the billions of dollars. In fact, a FEMA (1995) report estimates the average annual losses …

Lv-11-C031: Measured Levels Of Hospital Noise Before, During, And After Renovation Of A Hospital Wing, And A Survey Of Resulting Patient Perception, Cassandra H. Wiese, Lily M. Wang

Durham School of Architectural Engineering and Construction: Faculty Publications

Acoustic conditions in hospitals can negatively influence a patient’s physical and psychological health. This paperreports on noise levels measured before, during, and after renovation of a hospital wing in an Omaha, Nebraska, facility thatregularly receives unsatisfactory noise scores on patient satisfaction surveys. Sound pressure levels were logged every 10seconds over four-day periods in three different locations: at the nurses' station, in the hallway, and in a nearby patient’sroom. The resulting data have been analyzed in terms of A-weighted equivalent sound levels (LAeq) as well as variousexceedance levels (Ln). Results indicate that sound levels did not change much due to the …

The “Bim’S 4d+” Dimension: Real Time Energy Monitoring, Mahmoud Alahmad, Wisam Nader, Adam Brumbaugh, Yong Cho, Song Ci, Hamid Sharif, Jonathan Shi, Jill Neal

Durham School of Architectural Engineering and Construction: Faculty Publications

With the current trend towards Building Information Model (BIM), facility managers have a new tool for raising efficiency. This paper discusses the integration of the BIM software with a real-time monitoring (RTM) system, as a 4D+ dimension in BIM, to track the electrical usage at every location in a building. This ability could be invaluable in identifying what unnecessary loads are connected to a device and could be disconnected. This would result in elimination of needless loads and phantom loads during non-business hours, causing significant reduction in energy consumption. A prototype of the RTM was built and the results are …

An Adaptive Photovoltaic-Inverter Topology, Mahmoud Alahmad, Mohamed Amer Chaaban, Siu Kit Lau

Durham School of Architectural Engineering and Construction: Faculty Publications

A new inverter topology for Adaptive photovoltaic (PV) system is proposed. An improvement in the power generation of the system during different operating conditions is achieved. The proposed configuration provides flexible connection between the PV modules and the inverters to meet current conditions of PV array. Preliminary simulation results are provided for an adaptive PV array. Efficiency comparison between traditional PV system configurations is discussed. Potential improvement using the proposed adaptive configuration is sited.

Non-Intrusive Electrical Load Monitoring And Profiling Methods For Applications In Energy Management Systems, Mahmoud Alahmad, Hosen Hasna Hh, Evans Sordiashie

Durham School of Architectural Engineering and Construction: Faculty Publications

"Phantom Loads" cause energy waste in homes and the built environment as a whole. Consumers spend more than $3 billion a year on "Phantom Load" in the United States alone. The goal of this paper is to conserve energy by increasing consumer awareness on their energy usage and reducing and /or eliminating phantom loads in the built environment. A further goal is to improve upon existing power distribution systems in the built environment with limited hardware additions to increase energy conservation. This paper investigates remote identification of load types and the locations along the electrical circuitry where they (load) are …

A Novel Photovoltaic/Battery Structure For Solar Electrical Vehicles [Pvbs For Sev], Mahmoud Alahmad, Mohamed Amer Chaaban, Lana Chaar

Durham School of Architectural Engineering and Construction: Faculty Publications

In this paper, we propose a new flexible Photovoltaic/Battery charging Structure for Solar Electrical Vehicles (PVBS), where the interconnection of the system is dynamically changing based on current shading conditions across PV modules to provide intelligent system, as well as to provide flexibility, performance, and efficiency enhancement for the SEV. PVBS is expected to 1) provide a battery charging efficiency improvement over existing employed topologies; 2) provide new means to match the computing load with the PV system performance metrics shading and mismatches; 3) and provide elastic reconfigurable system expected to spur research advancements and innovations to make future SEV …

Optimization Of Energy Storage Systems In Hev's, Mahmoud Alahmad, Mohamed Amer Chaaban

Durham School of Architectural Engineering and Construction: Faculty Publications

This paper introduces a novel battery model inspired by molecular structures mainly for applications in HEV’s. This novel 3-D adaptive battery topology shows potential for improvement in input and output performance as well as the charging/ discharging efficiency of batteries. The proposed topology provides flexible connections between battery cells to achieve different configurations of battery. A new switching matrix has been developed to achieve the required configurations. Preliminary simulations provide promising results for an adaptive 3-D battery configuration. Comparison between traditional battery configurations and the adaptive 3-D configuration is considered. A significant improvement in power curves is achieved by the …

Green And Sustainable Technologies For The Built Enviornment, Mahmoud Alahmad, Muhammad Zulfiqar, Hosen Hasna Hh, Hamid Sharif, Evans Sordiashie, Nasser Aljuhaishi

Durham School of Architectural Engineering and Construction: Faculty Publications

Energy conservation is among society’s greatest challenges, and the built environment has a concentrated impact on our natural environment, economy, and health. Fundamental understandings of how energy is consumed, monitored, and controlled are key prerequisites for an energy conservation process. This paper evaluates the effectiveness of real-time energy monitors (RTM) to influence behavior change in residential consumers. A methodology for remote identification of load types and the locations along the electrical circuitry where they (load) are being consumed is also presented. The load type and status (on, off, standby) are determined both remotely and in a non-intrusive manner using Non-Intrusive …

Combinatorics & Power Consumption, Mahmoud Alahmad, Wisam Nader

Durham School of Architectural Engineering and Construction: Faculty Publications

in this paper the power consumption possible combinations for a number of loads and a single power source are discussed. The proposed mathematical model depends basically on combinatorics to estimate how many ways are possible to operate different loads powered by a single power source. This paper takes into consideration the different conditions and limitations to operate n number of loads limited by their minimum and maximum values of power consumption. Four different cases of operations are discussed and modeled. A flowchart and a step-by-step method to do the calculations for a general case is also illustrated at the end …