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Wind-Induced Pressures In Air Permeable, Double-Layer Roof Systems In Regions Of Separated Flow, Jeong Hee Oh 2014 Western University

Wind-Induced Pressures In Air Permeable, Double-Layer Roof Systems In Regions Of Separated Flow, Jeong Hee Oh

University of Western Ontario - Electronic Thesis and Dissertation Repository

This thesis is concerned with the wind-induced pressure distribution acting on air permeable, double-layer roof systems placed on low-rise buildings. Because of the pressure transmission into the cavity between layers, the pressure difference in the double-layer systems differs significantly from that in a single layer. The interior pressures (in the cavity between layers) are highly correlated with external pressures at the openings on the external surface of the outer layer and thereby, the net wind load for the design of the outer layer is considerably reduced by the pressure equalization between the external and internal surfaces of the outer layer ...


Coastal Defenses, U.S., Bert Chapman 2014 Purdue University

Coastal Defenses, U.S., Bert Chapman

Libraries Faculty and Staff Scholarship and Research

Provides an overview of U.S. military coastal defenses during the period up to and including the War 1812.


An Emerging Vocabulary: Architecture Of Performance, Jeremy H. Stock 2014 University of Kentucky

An Emerging Vocabulary: Architecture Of Performance, Jeremy H. Stock

Kaleidoscope

Re-chartered at the University of Kentucky in 2005, the Triangle Fraternity – a brotherhood of students studying Architecture, Engineering, and Sciences – now seeks to establish a visible presence by building a new fraternity house on-campus. To enable this investigation, professors Gregory Luhan, Peyman Jahed, and Bruce Walcott developed a design + energy studio experience that provided a framework for an integrated design team to use a systems-thinking approach to generate a range of scalable, net-zero energy prototypes. These prototypes can be applied in a variety of contexts and have the potential to address larger issues, such as energy efficiency and environmental stewardship ...


Validation Of A Fault-Modeling Equipped Vapor Compression System Model Using A Fault Detection And Diagnostics Evaluation Tool, David P. Yuill, Howard Cheung, James E. Braun 2014 SelectedWorks

Validation Of A Fault-Modeling Equipped Vapor Compression System Model Using A Fault Detection And Diagnostics Evaluation Tool, David P. Yuill, Howard Cheung, James E. Braun

David Yuill

A methodology for evaluating the performance of fault detection and diagnostics (FDD) tools for unitary air- conditioners has been developed (Yuill and Braun 2013). The methodology uses laboratory measurements of systems with and without faults to test FDD tools’ effectiveness. A gray box modeling method capable of modeling systems with faults was developed by Cheung and Braun (2013a and 2013b) to provide input data, as an alternative to using laboratory data that had been collected. The simulation method was validated by direct comparison with experimental data, but a comparison of FDD evaluation results provides a more direct and useful validation ...


Using K’Nex To Teach Large Scale Structures To Architects And Constructionstudents, Allen C. Estes, Craig Baltimore 2014 California Polytechnic State University

Using K’Nex To Teach Large Scale Structures To Architects And Constructionstudents, Allen C. Estes, Craig Baltimore

Architectural Engineering

The College of Architecture and Environmental Design at California Polytechnic State University in San Luis Obispo (Cal Poly SLO) is the only college in the nation that includes architecture (ARCH), architectural engineering (ARCE) and construction management (CM) programs in the same college. Given the unique mix of disciplines and the emphasis on interdisciplinary collaboration, the ARCH and CM students take a five-course structural engineering sequence from the ARCE department. A challenge of these courses is to maintain some degree of computational rigor while offering a broader perspective that will benefit the ARCH and CM students. This paper reports on one ...


Structural Damage Detection Utilizing Experimental Mode Shapes, Evan Jamison Gerbo 2014 California Polytechnic State University

Structural Damage Detection Utilizing Experimental Mode Shapes, Evan Jamison Gerbo

Master's Theses and Project Reports

A method of locating structural damage is developed and tested to aid in the evaluation of structural health. This method will help minimize the cost of structural inspection and repair by informing engineers of where damage, due a seismic event, has occurred before the removal of finishes for visual inspection. This thesis begins to answer the question “can structural damage be detected solely through analysis of experimentally measured mode shapes?”

The work encompasses construction of a test structure, with three braces that can be repeatedly engaged or dis-engaged, thus allowing for testing of a variety of braced configurations. For this ...


Effects Of Polyethylene Terephthalate Fibers In The Water Resistance Of Compressed Stabilized Earth Blocks., Ebrima Colley 2014 University of Nebraska - Lincoln

Effects Of Polyethylene Terephthalate Fibers In The Water Resistance Of Compressed Stabilized Earth Blocks., Ebrima Colley

Architectural Engineering -- Dissertations and Student Research

This research project focuses on investigating the effects of synthetic fibers (PET) and amount of cement stabilization on the water absorption, water surface erosion, and wet compressive strength of the compressed stabilized earth blocks (CSEB). The use of locally available soils blended with fibers and cement was investigated to obtain a design mix for compressed stabilized earth blocks capable of staying intact in wet and humid regions in the world (i.e. regions with annual rainfall of over 50 in). Blocks with varying cement percentages of 5, 8, 10, and 15% by weight were produced with 3 specimens each, with ...


Mesure Du Coefficient D’Absorption De Matériaux Poreux Sous Champ Acoustique Diffus Synthétique, Olivier Robin, Alain Berry, Olivier Doutres Ph.D., Noureddine Atalla 2014 SelectedWorks

Mesure Du Coefficient D’Absorption De Matériaux Poreux Sous Champ Acoustique Diffus Synthétique, Olivier Robin, Alain Berry, Olivier Doutres Ph.D., Noureddine Atalla

Olivier Doutres Ph.D.

Cette communication décrit une méthode expérimentale pour l’estimation du coefficient d’absorption de matériaux absorbants sous un champ acoustique diffus synthétisé dans des conditions de champ libre. Des comparaisons sont réalisées entre des résultats expérimentaux obtenus via cette méthode et celle standardisée de la chambre réverbérante, ainsi qu’avec des simulations numériques basées sur la méthode des matrices de transfert. En utilisant des surfaces de matériaux inférieures à celles requises pour la méthode standardisée, les valeurs de coefficient d’absorption obtenues ne présentent pas les surestimations liées aux effets de taille de l’échantillon vues dans le cas de ...


Spans Across Time: Compliance Of Historic Maine Coastal Bridges With Modern Geometric Design Standards, Elizabeth Reynolds 2014 The University of Maine

Spans Across Time: Compliance Of Historic Maine Coastal Bridges With Modern Geometric Design Standards, Elizabeth Reynolds

Honors College

The purpose of this thesis is to study a wide range of historic bridges along the coast of Maine. Three bridges were selected for study: Sewall’s Bridge, Bailey Island Bridge, and Deer Isle-Sedgwick Bridge. The selected bridges exhibit varying historic treatment approaches, material use, structure type, and span length. This thesis establishes the compliance of these bridges with modern geometric standards, as defined by AASHTO (2011), including maximum grade, vertical and horizontal alignment, roadway width, and sidewalk width. Passing sight distance, passenger comfort and general appearance are not be included in this evaluation of geometric design.

This document outlines ...


Performance Of No Vibration/No Admixture Masonry Grout Containing High Replacement Of Portland Cement With Fly Ash And Ground Granulated Blast Furnace Slag, Eric Bateman 2014 California Polytechnic State University

Performance Of No Vibration/No Admixture Masonry Grout Containing High Replacement Of Portland Cement With Fly Ash And Ground Granulated Blast Furnace Slag, Eric Bateman

Master's Theses and Project Reports

When hollow concrete masonry is used for construction in high seismic regions, structural designs typically require fully grouted walls. The grouting process is labor-intensive, time-consuming and has a high energy demand due to requirements of consolidation in each and subsequent grout lifts. Self-consolidating grout with admixtures has been successfully used without segregation in walls of up to 12.67 ft. in height. Investigation of self-consolidating grout mixes without admixtures has potential for sustainability improvement.

This thesis reports on the compression strength and consolidation observations of self-consolidating characteristics of no vibration/no admixture grout made by substituting various proportions of Portland ...


Integrating Climate Change Adaptation, Disaster Risk Reduction And Urban Planning: A Review Of Nicaraguan Policies And Regulations, Claudia Rivera, Christine Wamsler 2014 SelectedWorks

Integrating Climate Change Adaptation, Disaster Risk Reduction And Urban Planning: A Review Of Nicaraguan Policies And Regulations, Claudia Rivera, Christine Wamsler

Christine Wamsler

The integration of risk reduction and climate change adaptation has become an urgent task in addressing increasing urban risk more effectively and efficiently. This paper analyses the extent to which climate change adaptation is integrated into the policies and regulatory frameworks that guide urban risk reduction in Nicaragua, and discusses related progress. The results reveal significant progress in integrating climate change adaptation into the policy and regulatory frameworks of the three relatively new fields of (a) disaster risk reduction, (b) environmental management and (c) urban planning. They show that differences in the degree of integration relate to the development and ...


Quantifying The Effect Of Passive Solar Design In Traditional New England Architecture, Peter M. Levy 2014 SelectedWorks

Quantifying The Effect Of Passive Solar Design In Traditional New England Architecture, Peter M. Levy

plevy@eco.umass.edu

Passive solar design can be an effective means of reducing conditioning loads in residential buildings by utilizing free solar heat during the heating season, and blocking unwanted solar heat during the cooling season. The objective of this thesis was to use energy modeling software to simulate the effect that incorporating passive solar design strategies into typical New England style houses would have on their energy usage for heating and cooling. The designs that were studied were Capes, Colonials, and Saltboxes. Four versions of increasing energy efficiency were studied for each style. After measuring baseline energy usage for each model, four ...


A Case Study Of Zero Energy Home Built For Solar Decathlon Competition 2013, Sanjib Mulepati 2013 University of Nevada, Las Vegas

A Case Study Of Zero Energy Home Built For Solar Decathlon Competition 2013, Sanjib Mulepati

UNLV Theses/Dissertations/Professional Papers/Capstones

Energy consumption in residential homes has been a subject of research related to sustainability. Reduction in the consumption of energy is a goal of sustainable construction. The Department of Energy (DOE) started a Solar Decathlon competition in 2002 in which the students from different universities around the globe build an energy efficient and affordable home suitable for their climate and location. The main goal of this competition is to select the best home that is designed and built in a sustainable way. In this study, the home designed and constructed for participation in the competition by the students at University ...


The Water Wall: A Passive Solar Collection And Thermal Storage Device For Supplementary Radiant Heating, Rhett Roman Noseck 2013 University of Nevada, Las Vegas

The Water Wall: A Passive Solar Collection And Thermal Storage Device For Supplementary Radiant Heating, Rhett Roman Noseck

UNLV Theses/Dissertations/Professional Papers/Capstones

Through the implementation of passive solar building systems, suburbia could take a fresh new step forward toward a progressively more sustainable direction. Making passive solar strategies a priority, master planned community developments would see opportunity to change the style and design of future suburban residences.

The focus and intention of this body of work is to research, design, fabricate, and test a prototype of a passive solar heating device using water as the medium for thermal storage. The size and shape of the design for the water wall device will be determined by the currently built suburban environment; however, for ...


Brocade & Cal Poly Project Challenge, Andy Vallejo 2013 California Polytechnic State University

Brocade & Cal Poly Project Challenge, Andy Vallejo

Architectural Engineering

No abstract provided.


Approximating The Seismic Amplification Effects Experienced By Solar Towers Mounted On The Rooftops Of Low-Rise Industrial Buildings, Peter Luiz Balla 2013 California Polytechnic State University

Approximating The Seismic Amplification Effects Experienced By Solar Towers Mounted On The Rooftops Of Low-Rise Industrial Buildings, Peter Luiz Balla

Master's Theses and Project Reports

This thesis investigates the acceleration amplification experienced by solar towers mounted on the rooftops of low-rise industrial buildings during a seismic event. Specifically, this thesis looks to assess the validity of using amplification factors adopted by the ASCE 7-05Minimum Design Loads for Buildings and Other Structures to approximate seismic acceleration amplification for roof-mounted solar towers. To investigate the validity of the ASCE 7-05 amplification factors, this thesis conducts timehistory analyses of three theoretical solar towers mounted on the roof of a case study building. The time history analyses are conducted in the finite element computer modeling program SAP 2000 using ...


Absorption Simulation ( Absim ) Software Development, Vipul Vishnu Bhat, Ming Qu 2013 Purdue University

Absorption Simulation ( Absim ) Software Development, Vipul Vishnu Bhat, Ming Qu

The Summer Undergraduate Research Fellowship (SURF) Symposium

Researchers working on air conditioning systems currently use a software called ABSIM ( Absorption Simulation ) to evaluate current absorption systems or simulate new system designs. ABSIM was developed at Oak Ridge National Labs in the 1980s and the latest platform it is compatible with is Windows XP. ABSIM is not compatible on newer platforms and is not very user friendly. A lot of the actions involved in using ABSIM aren’t very intuitive. The goal is to develop a more user friendly simulation program that is based off of ABSIM and see to it that the program can be deployed across ...


Compression Testing And Failure Modes Of Steel-Concrete Composite (Sc) Structures For Nuclear Containment, Patrick Michael Wanamaker, Amit H. Varma 2013 Purdue University

Compression Testing And Failure Modes Of Steel-Concrete Composite (Sc) Structures For Nuclear Containment, Patrick Michael Wanamaker, Amit H. Varma

The Summer Undergraduate Research Fellowship (SURF) Symposium

Although being able to provide much cleaner power than burning coal and other fossil fuels, nuclear power plants are still a tough sell to the general public due to their history of being spontaneously dangerous. The containment structures surrounding these nuclear plants, however, can play a huge role in reducing the risks associated with them. Relatively new designs for these containment assemblies, known as SC (steel-concrete composite) structures, aim to increase the strength and durability of the containment facilities while keeping costs down. By varying the spacing between shear studs, the ratio of concrete to steel, and the ratio of ...


Environmental Monitoring In Preparation For The Installation Of A Green Roof, Andrew N. Martin, Ming Qu 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 ...


Evaluating The Performance Of Fault Detection And Diagnostics Protocols Applied To Air-Cooled Unitary Air-Conditioning Equipment, David P. Yuill, James E. Braun 2013 SelectedWorks

Evaluating The Performance Of Fault Detection And Diagnostics Protocols Applied To Air-Cooled Unitary Air-Conditioning Equipment, David P. Yuill, James E. Braun

David Yuill

Fault detection and diagnostics (FDD) tools are increasingly being applied to air-cooled unitary air-conditioning systems. However, it is not known how well these tools work because there is no standard method of measuring or evaluating the performance of FDD. In the current paper the authors describe the common faults that FDD is applied to in unitary systems, and propose a method of evaluating the performance of FDD protocols. The method involves feeding measurement data through a candidate protocol and collecting and organizing the responses based upon the fault’s impacts on performance. A library of faulted and unfaulted measurement data ...


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