Architectural Engineering Commons^™

Private Room Of The Wheel | A New Form Of Transient Dwelling, Kathy Teng

Architecture Senior Theses

The cross-country highway and road trip are deeply rooted in the American psyche, supported by the rapid growth in ownership of automobiles by American families since the 1940s, establishing a sense of freedom and leisure in their mobile lifestyles. However, other highway users have less control and freedom over their daily routine. These users are part of a vast network of international commerce reliant on the long haul.

The time long-haul truck drivers are away from home is prolonged, with the end of each day spent sleeping in fixed truck cabins and eating at banal truck stops. “ ‘I can …

Innie/Outie | Renegotiating Figure And Structure, Maxwell Rosner

Architecture Senior Theses

This thesis contends that in order to sustain its claim to be socially progressive and accessible enterprise, the discipline of architecture must resist the divorce of figure and structure.

Innie/Outie considers Architecture as a simultaneously typological and teleological proposition. Architects exploit typology as a means of classifying, diagramming, and ultimately flattening and iconicizing ideas about Architecture so as to place them within a broader cultural context, thereby making them intellectually accessible to their audiences. By contrast, architects from the advent of Modernism onwards have displayed a critical preoccupation with the discipline’s teleological potential, the creation of form that follows function …

The Seed | Urban Vertical Farming Germinated, Michael Lima

Architecture Senior Theses

A city works as an ecosystem in many ways. However, we currently do not live within that ecosystem, as the difference between an ecosystem and a city is the waste output and food input . Nature and society do not exist independently because there are no spaces of nature unaffected by man. With this in mind we need to reestablish our relationship with nature. Architecture and engineering can be used to create buildings that will allow humans to turn cities into ecosystems. This thesis argues that Urban Vertical Farms will produce social and economic hubs that will be a new …

Algorithmic Settlements | Modeling Informal Settlement Through Automated Generative Design, Ben Anderson-Nelson

Architecture Senior Theses

The position of the architect when designing is to arbitrate which information is relevant and which is not, and to do so across a broad spectrum of fields. Considering this, Christopher Alexander claimed as long ago as 1964, that “design problems are reaching insoluble levels of complexity.”This thesis focuses on informal settlement growth and how architects can investigate growth as a part of master-planning new housing. Drawing on case studies of settlements, video game logics, and existing architectural tools, a tool was developed to study the growth of settlements. This tool is based on cellular automata, a spatial and algorithmic …

Subtraction | Construction In Reverse, Sherina S. Zhang

Architecture Senior Theses

The life of a building does not begin at the creation of the new; it starts with the subtraction of the old. As the pace of technological development accelerates, buildings are erected and demolished at an unprecedented rate. Cities use their urban artifacts like skyscrapers, to portray economic and political prowess. For example, the ghost cities of China are relics of a burst financial bubble while Venezuelan ruling party elites name business towers after themselves as a show of power and prosperity. Many parts of the world today are now overbuilt with artifacts that decline into obsolescence. Demolition procedures erase …

Two Lands, One System | Redefining The Border Crossing, Matthew Trulli

Architecture Senior Theses

The Israeli and Palestinian populations each have their own distinct infrastructural system, which operates independently and fails to connect the people in this region. This thesis contends that if a two-state solution is implemented under the guidelines of the 2003 Geneva Accord, new connections can stitch the populations of Israel and Palestine together through a reimagined border system.

These divisive infrastructural networks, which are a result of tense relationships, have also sparked increased violence throughout the region, particularly in Jerusalem. The French Hill, located north of the Old City in Jerusalem, is positioned at a critical point in the infrastructural …

Glaze Station Expansion And Building, Nicholas M. Hunt, Seth J. Green

Celebration of Student Scholarship Poster Sessions Archive

No abstract provided.

Construction Training Facility (Essu Philippines), Omar Ramirez

Architectural Engineering

The purpose of this project was to work hand in hand with engineers and construction managers from the non-profit organization Build Change in order to construct a training facility in the Philippines. The training facility would educate the locals how to build safer structures that would be more effective during earthquakes.

The focus of this report is to elaborate on the process of the project, the difficulties encountered, and the benefits of the overall project when completed.

Effects Of Noise, Reverberation And Foreign Accent On Native And Non-Native Listeners’ Performance Of English Speech Comprehension, Zhao Ellen Peng, Lily M. Wang

Durham School of Architectural Engineering and Construction: Faculty Publications

A large number of non-native English speakers may be found in American classrooms, both as listeners and talkers. Little is known about how this population comprehends speech in realistic adverse acoustical conditions. A study was conducted to investigate the effects of background noise level (BNL), reverberation time (RT), and talker foreign accent on native and non-native listeners' speech comprehension, while controlling for English language abilities. A total of 115 adult listeners completed comprehension tasks under 15 acoustic conditions: three BNLs (RC-30, RC-40, and RC-50) and five RTs (from 0.4 to 1.2 s). Fifty-six listeners were tested with speech from native …

Design And Optimization Of Membrane-Type Acoustic Metamaterials, Matthew G. Blevins

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

One of the most common problems in noise control is the attenuation of low frequency noise. Typical solutions require barriers with high density and/or thickness. Membrane-type acoustic metamaterials are a novel type of engineered material capable of high low-frequency transmission loss despite their small thickness and light weight. These materials are ideally suited to applications with strict size and weight limitations such as aircraft, automobiles, and buildings. The transmission loss profile can be manipulated by changing the micro-level substructure, stacking multiple unit cells, or by creating multi-celled arrays. To date, analysis has focused primarily on experimental studies in plane-wave tubes …

Towards A Localized Form-Based Code For Abu Dhabi Urban Neighborhoods, Arwa Khalid Sabri

Theses

Form-Based Code (FBC) is a sustainable planning tool that helps realize sustainable urban form and sustainable communities from different perspectives, including mixing of land uses, diversifying housing types, achieving walkability and cycling as well as permitting community involvement in decision making and design processes. It is therefore considered as a comprehensive tool that regulates different planning scales from master plan to individual buildings. Locally, Abu Dhabi Emirate lacks a FBC that could help achieve its sustainability-orientated 2030 vision and thus promote its envisaged sustainable urban identity. This research aims at studying to what extent the present form-related standards and guidelines …

The Enclaving Of Dubai: An Investigation Of The Factors Governing The Emergence And Spreading Of The Gated Residential Communities In The City, Mahmoud Saeed Al Mansi

Theses

This study attempts to fill a gap within the current existing literature of the worldwide phenomenon of rise and spread of walled communities. The study primarily examines the factors relating to gated residential communities in Dubai, a city that is not covered in the literature of the subject. Specifically, it traces the emergence of gated residential communities in the urban history of Dubai, investigates their magnitude over time, locates them within the city, and investigates the various factors affecting their spread, particularly in the past few decades. To achieve these objectives, a field survey and a qualitative research were conducted …

Assessment Of Noise-Induced Annoyance By Tones In Noise From Building Mechanical Systems, Joonhee Lee, Lily M. Wang

Lily M Wang

Prominent tones in noise generated by mechanical equipment in buildings can cause complaints from occupants in buildings. The ISO 1996-2 and ANSI S1.13 standards describe methodologies and metrics to quantify tonality perception, but the influence of tones in noise on human annoyance and performance is not fully understood yet. This paper investigates annoyance responses of humans while exposed to background noise with tonal components. Twenty participants completed digit span tasks while exposed to noise signals with differing levels of tones and overall loudness. Subjects were also asked to rate their annoyance after completing tasks under each noise signal. The subjective …

The Impact Of Building Acoustics On Speech Comprehension And Student Achievement, Lily M. Wang

Lily M Wang

The movement for improved classroom acoustics has primarily been grounded on studies that show how building acoustics (i.e. background noise levels and room reverberation) affect speech intelligibility, as determined by speech recognition tests. What about actual student learning, though? If students do not understand each spoken word in the classroom perfectly, can they still manage to achieve high scholastic success? This presentation will review two recent studies conducted at the University of Nebraska – Lincoln, linking classroom acoustic conditions to student learning outcomes and speech comprehension (rather than simply recognition). In the first, acoustic measurements in two public school districts …

Determining Annoyance Thresholds Of Tones In Noise, Jennifer M. Francis, Joonhee Lee, Lily M. Wang

Lily M Wang

Building services equipment often produces noise signatures with significant tones in them that can lead to complaints in the built environment. Previous studies have investigated prominence levels of assorted tonal frequencies, but it is still unclear what prominence of the tones across varying tonal frequencies can lead to human annoyance. This project seeks to apply two different methods towards defining annoyance thresholds of tones in noise at two tonal frequencies: 125 Hz and 500 Hz. In the first, subjects are asked to perform a task, while exposed to ten minutes of a broadband noise spectrum with a specific level of …

The Impact Of Building Acoustics On Speech Comprehension And Student Achievement, Lily M. Wang

Lily M Wang

The movement for improved classroom acoustics has primarily been grounded on studies that show how building acoustics (i.e. background noise levels and room reverberation) affect speech intelligibility, as determined by speech recognition tests. What about actual student learning, though? If students do not understand each spoken word in the classroom perfectly, can they still manage to achieve high scholastic success? This presentation will review two recent studies conducted at the University of Nebraska – Lincoln, linking classroom acoustic conditions to student learning outcomes and speech comprehension (rather than simply recognition). In the first, acoustic measurements in two public school districts …

Effects Of Room Acoustics On Comprehension Of Foreign-Accented Speech By Native And Non-Native English-Speaking Listeners, Zhao Peng, Kristin E. Hanna, Brenna N. Boyd, Lily M. Wang

Lily M Wang

In a previous study by the authors, reverberation time (RT) and background noise level (BNL) were both found to have negative effects on native and non-native English-speaking listeners in comprehending English speech produced by native American-English-speaking talkers. Comprehension scores were adjusted for listeners’ baseline English proficiency levels. In the present study, instead of native English-speaking talkers, two native Mandarin Chinese talkers (one male, one female) with similar English spoken proficiency were recruited to produce the same speech materials used in the previous study. A similar methodology was adopted to conduct speech comprehension tests on three groups of listeners: 1) native …

Quantification And Subjective Perception Of Varying Reflection Densities In Measured Room Impulsed Responses, Hyun Hong, Lily M. Wang

Lily M Wang

This project focuses on quantifying and testing the subjective perception of reflection densities, or the number of reflections per second, from different room impulse responses. The widely used room acoustic metric, reverberation time, is linked to the perceived reverberation in a room. Two different rooms having the same reverberation time, though, can have different reflection densities in their room impulse responses, and this difference in reflection density may affect how listeners perceive spatial impression in rooms. To investigate how sensitive humans are to a change of reflection density, this paper first reviews assorted parameters for quantifying reflection density from measured …

Room Acoustic Effects On Speech Comprehension Of English-As-Second-Language Talkers And Listeners Versus Native-English-Speaking Talkers And Listeners, Lily M. Wang

Lily M Wang

Approximately 21% of the children in the United States school system speak a language other than English at home, but are being taught in English at school. English is additionally being used more and more often as a common language in international settings, even though participants at these international events again are not native English speakers. How do adverse room acoustic environments, including higher background noise levels and longer reverberation times, impact English-as-a-Second-Language (ESL) talkers and listeners versus native English-speaking talkers and listeners? This presentation focuses on two recent studies at the University of Nebraska that investigate how assorted room …

Survey Of Restoration Efforts Following The 2015 Nepal Earthquake, Celine K. Nakachi

Creative Activity and Research Day - CARD

The purpose of this paper is to provide knowledge on the devastating 2015 Nepal earthquake, it's architectural failures and alternative construction methods with the use of various documentation such as video footage screenshots, photographs, and information from previous reports. It will offer alternative methods that can be proposed to those currently residing in Nepal for safer construction methods, styles and overall offer a sense of hope for those affected by the earthquake. The end goal is to inform others on Nepal's conditions and their inability to build lavishly, therefore also taking into account some of the local and cheaper materials …

The Effects Of Tones In Noise On Human Annoyance And Performance, Joonhee Lee

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

Building mechanical equipment often generates prominent tones because most systems include rotating parts like fans and pumps. These tonal noises can cause unpleasant user experiences in spaces and, in turn, lead to increased complaints by building occupants. Currently, architectural engineers can apply the noise criteria guidelines in standards or publications to achieve acceptable noise conditions for assorted types of spaces. However, these criteria do not apply well if the noise contains perceptible tones. The annoyance thresholds experienced by the general population with regards to the degree of tones in noise is a significant piece of knowledge that has not been …

Getting La To Net Positive Competition For Innovation In Design, Alexander Lohr

Architectural Engineering

For my senior project I participated in the Getting LA to Net Positive Competition for Innovation in Design competition which is part of the living building challenge. The Living Building Challenge™ is a building certification program, advocacy tool and philosophy that define advanced measure of sustainability in the building environment. The Challenge is comprised of seven performance categories called Petals: Place, Water, Energy, Health & Happiness, Materials, Equity and Beauty. Petals are subdivided into a total of twenty Imperatives, each of which focuses on a specific sphere of influence. The competition is run by the Living Building Challenge Collaborative: Los …

Quantification Of Time Varying Directivity Of Musical Instruments, Madeline A. Davidson

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

Static directivity patterns of musical instruments have been mapped somewhat extensively, but little research has been done in analyzing the directivity patterns of musical instruments over time as they play. Directivity patterns can be affected by variables such as instrument, frequency, dynamics, and style. This thesis proposes a set of quantification methods of time varying directivity, all derived from the maximum Directivity Index analyzed at consecutive short-duration time windows comprising the musical excerpt. The instrumental recordings used in this paper are taken in an anechoic chamber using either a 5, 13, or 32 multichannel setup. From the values of maximum …

The Impact Of Dubai’S Architectural Wonders On The Daily Indigenous Performance In Light Of Cultural Modernity: A Comparative Case Study Between Burj Khalifa And Burj Al-Arab, Zulfat S. Al Kassim

Theses

In order to decrease the reliance on oil and create more economic opportunities, the UAE has witnessed a development boom over the last few decades in an effort to promote tourism. Dubai specifically has purposefully undergone dramatic architectural evolutions with the aim of transforming the city into a tourist hub and a global attraction. Over the last few years, iconic buildings including Burj Al Arab and Burj Khalifa have been built at different times to become prominent landmarks that promote the city’s global image and combine traditional/local elements in such a way as to form completely new unrecognizable forms i.e. …

Evaluation Of Carbonation Resistance Of Paint Coated Concrete For Buildings, Tommy Y. Lo, Wenyu Liao, C. K. Wong, Waiching Tang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

When evaluating the carbonation resistance of paint coated concrete, the effects of both the strength grade and the curing conditions (standard curing and accelerated curing) of concrete substrate on carbonation resistance of paint coated concrete were investigated. The concept of the carbonation suppression ratio of paint was presented for evaluation of the anti-carbonation performance of the two types of paints (exterior and interior paints) when applied to a reference concrete substrate. The test results showed a good linear relationship between the carbonation depths of the paint coated concrete and the square root of exposure times. Concrete with higher strength grade …

The Function And Format Of Bills Of Quantities:An Irish Context, Tony Cunningham

Other Resources

The production of bills of quantities as a means of obtaining tenders has traditionally been viewed as a primary function of the quantity surveying profession.

This study investigates the function and format of bills of quantities in the Irish context. It explains the nature of bills, how they are compiled, and identifies the situations in which they may be used. The primary functions of the bill as a means of obtaining tenders and its status as a contract document are explored. The study also addresses particular aspects of the bill which may aid the effective management of construction projects for …

Ogden College Of Science & Engineering Newsletter (Spring 2016), Cheryl Stevens, Dean, Ogden College Of Science & Engineering

Ogden College of Science & Engineering Publications

No abstract provided.

Thermal Mass Behaviour Of Concrete Panels Incorporating Phase Change Materials, Dervilla Niall, Roger West, Sarah Mccormack, Oliver Kinnane

Conference papers

Phase Change Materials (PCM) have been incorporated into a range of building envelope materials with varied success. This study investigates two different methods of combining concrete and phase change materials to form PCM/concrete composite panels. The first method involves adding microencapsulated paraffin to fresh concrete during the mixing process. The second method involves vacuum impregnating butyl stearate into lightweight aggregate which is then included in the concrete mix design. The primary aim of the study is to determine which method is the most effective way to improve the thermal mass characteristics of a concrete panel in the context of a …

Experimental Study On The Thermal Characteristics Of Micro Channel Separate Heat Pipe Respect To Different Filling Ratio, Li Ling, Quan Zhang, Yuebin Yu, Shuguang Liao, Zhengyong Sha

Durham School of Architectural Engineering and Construction: Faculty Publications

A micro channel separate heat pipe (MCSHP) that can use natural cold energy was developed to reduce the cooling energy consumptions of telecommunications stations (TSs). Experimental investigations of exploring the optimal refrigerant filling ratio of MCSHP under different outdoor conditions and flow rates were presented. R22 was used as the working fluid. Various refrigerant filling ratios were tested in an enthalpy difference laboratory (EDL) in order to determine the optimal thermal performance for the exterior space temperature range from 8 °C to 23 °C and the air volume flow rate range from 1712 m3/h to 2980 m3/h. In addition, transient …

Structural Damage Detection By Comparison Of Experimental And Theoretical Mode Shapes, William George Rosenblatt

Master's Theses

Existing methods of evaluating the structural system of a building after a seismic event consist of removing architectural elements such as drywall, cladding, insulation, and fireproofing. This method is destructive and costly in terms of downtime and repairs. This research focuses on removing the guesswork by using forced vibration testing (FVT) to experimentally determine the health of a building. The experimental structure is a one-story, steel, bridge-like structure with removable braces. An engaged brace represents a nominal and undamaged condition; a dis-engaged brace represents a brace that has ruptured thus changing the stiffness of the building. By testing a variety …