Architectural Engineering Commons^™

Quantification Of Heat Flows Through Building Entrance Doors On A Winter Day, Daeho Kang

Publications and Research

The current methods for the prediction of the heat flow through building entrance doors have been used for years while involved with a certain degree of uncertainty. This paper describes an experimental method that accurately quantified such heat flow. The experiment monitored local environmental parameters in a college building on a cold winter day. The results of the experiment demonstrated that the experimental method is viable to accurately estimate the heat flow throughout the entrance doors and the presence of a vestibule moderated heat losses from the conditioned area. The results will be used for validating the existing methods.

Competence Of A Spray Passive Down-Draft Evaporative Cooling (Pdec) System For Space Cooling, Daeho Kang, Richard K. Strand

Publications and Research

A spray PDEC system has been relatively less considered than other passive cooling strategies as one of the viable low-energy solutions in the cooling of buildings while having a great potential in energy savings. This study is intended to evaluate the capability of a spray PDEC system for space cooling. It comprises four simulation scenarios to see the system response and influence of indoor thermal environment when a spray PDEC system is adopted as a primary cooling system in two different climates. The simulation results show that a spray PDEC system causes a substantial variation in the indoor thermal environment …

Feasibility Of A Fiber Reinforced Polymer Retrofit For Non-Ductile Concrete Walls, Rory S. De Sevilla, Jerry Hue Truong Luong, Anahid A. Behrouzi, Peter T. Laursen, Mike J. Deigert

Architectural Engineering

A significant number of pre-1980’s non-ductile reinforced concrete (RC) structures in California have been identified as deficient, many of which utilize RC shear wall systems to resist earthquake lateral forces. These non-ductile wall systems are typically lightly reinforced and lack adequate boundary element detailing. Engineers suspect these walls to susceptible to brittle, compression-controlled failure modes due to damage from concrete crushing and bar buckling. As a result, one approach designers are taking is to seek fiber reinforced polymer (FRP) retrofit solutions that improve the compression capacity of high-stressed wall end zone regions based on effectiveness of these approaches with columns. …

Improving The Accuracy Of Wood Diaphragm Deflection Computations And Its Impact On Asce 41 Pseudo-Lateral Force Estimates, John Lawson

Architectural Engineering

Structures with flexible seismic resisting systems tend to develop less seismic forces than their stiffer counterparts. While it has been commonly known that taller buildings in general have longer periods that result in a reduced spectral response, the analysis of one-story buildings with large, wide horizontal flexible diaphragms supported by stiff shear walls are now recognized as having a similar response. This building type often referred to as rigid wall – flexible diaphragm (RWFD) is very common in warehousing and big-box retail occupancies. Estimating the diaphragm deflection has become more important recently, not only because diaphragm deflections are more frequently …

Interlocking Rocking Clt Shear Walls With Viscous Dampers, Sydney Gallion, Abby M. Lentz, John Lawson

Architectural Engineering

While the use of cross laminated timber (CLT) has become more common, the implementation of CLT as shear walls remains rare because there is no universally recognized response modification coefficient, R, currently adopted for base shear. In addition, CLT shear walls are relatively stiff as a seismic force resisting system and inelastic behavior of the system is often relegated to vulnerable connections. There is also an inherent issue with instability due to overturning in multi-story buildings due to transportation limitations on the size of CLT panels. Past research by others has successfully utilized post-tensioning to create self-centering rocking CLT …

2017 Mexico City Earthquake: Analyses Of Reinforced Concrete Building Damage, Anisha Datta

Architectural Engineering

The main objectives of this research study was to organize and examine the information collected in the NSF RAPID and UNAM data sets from the 2017 Mexico Earthquake to: (i) study the damage patterns of the buildings impacted, (ii) observe how the unique characteristics of the soil regions effect building response, and (iii) provide an automated protocol using MATLAB and ArcGIS for effective analysis of large structural damage data sets collected after future earthquakes.

Same Polytechnic College: Structural Design Exploration, Emma Morley

Architectural Engineering

The Same Polytechnic College is a response to a lack of vocational training and higher learning opportunities for residents of Same, Tanzania and surrounding areas. The College will address the region’s need for skilled farmers, builders, teachers, and entrepreneurs by providing a pathway from secondary school graduation to continued education. This will generate a framework that strengthens the East African economy by supplying the region with educated professionals that make impactful contributions to society.

Construction will occur following a five-phase development plan, and the buildings will utilize simple but effective architectural techniques and modular structural design. These solutions are low-cost …

Daylight Illuminance In Classrooms Adjacent To Covered And Uncovered Courtyards Under The Clear Sky Of Najran City, Saudi Arabia, Abdultawab M. Qahtan

Emirates Journal for Engineering Research

Daylight penetrating the classrooms makes students efficient, improves overall health and increases energy efficiency. In the hot regions, the concept of courtyards in buildings is deeply linked to the architecture as a sustainable solution to daylight indoors without negatively affecting the building cooling loads in the summer. Najran University has existing courtyards in college buildings. Recently, the university covered the courtyards using PVC canvas. This study aims to investigate and compare the daylight illuminance in classrooms adjacent to covered and uncovered courtyards. A case study of four classrooms in the College of Engineering was investigated under the clear sky of …

Workforce Development Through Online Experiential Learning For Stem Education, Arefeh Mohammadi, Kevin Grosskopf, John Killingsworth

Durham School of Architectural Engineering and Construction: Faculty Publications

The U.S. workforce is increasingly comprised of older adults, women, and minorities who lack basic skills and are unable to acquire these skills through traditional educational and training programs. New approaches are needed to provide effective training to the adult learner and flexible support for nontraditional students who must balance work-life demands with limited educational opportunities. Contextualized teaching and learning (CTL) is a form of experiential learning that blends both basic skills and occupational training together in environments that allow students to relate subject matter to real-world situations. Virtual CTL environments can be created to better engage students, provide immediate …

Diversity, Inclusion And The Exceed Teaching Workshop, Allen C. Estes

Architectural Engineering

The American Society of Civil Engineers (ASCE) Excellence in Civil Engineering Education (ExCEEd) Teaching Workshops are currently in their 20th year of existence and have been highly successful. There is a growing body of literature on creating a multi-cultural classroom that celebrates diversity, accounts for the global differences and experiences of students, and deliberately fosters inclusivity. This paper examines the content of the existing culturally inclusive literature and quantifies how much is already present in the current ETW curriculum. It then suggests how much more could be included if a deliberate effort is made to include diversity and inclusivity into …

Development Of A Framework To Support The Effective Adoption Of Bim In The Public Sector: Lessons For Ireland, Shiyao Kuang, Alan Hore, Barry Mcauley, Roger West

Conference papers

Building Information Modelling (BIM) has been formally adopted by many countries with the promise of creating greater economic, social and sustainability benefits. Several authors and institutions have presented alternative BIM policies and tactics which have been adopted by developed countries. However, there is evidence to indicate that BIM adoption theories are not well established and, in particular, the linkage between BIM public sector adoption strategy outcomes and their contribution to achieving Government policy objectives are underdeveloped. This paper will present the outcome of the first phase of a systematic literature review of published studies (including journal papers and noteworthy international …

Interactive Physical Experiments In An Advanced Undergraduate Structural Dynamics Course, Charles D. Facciolo, Anahid A. Behrouzi

Architectural Engineering

This paper describes a number of physical models and hands-on lab activities incorporated in an advanced undergraduate structural dynamics lecture and laboratory course pairing offered within the Architectural Engineering department at California Polytechnic State University – San Luis Obispo. These course modifications were designed and implemented in the Winter 2018 quarter to enable students to:

-Collect acceleration data during free or forced vibration tests using a smartphone accelerometer application to generate data plots in Matlab; -Conduct free vibration tests on various single-degree of freedom (SDOF) systems to investigate effects of varying mass, stiffness/height, material type, and damping type (pendulum or …

Exposing Undergraduates To Design, Fabrication, And Large-Scale Experimentation In A Structural Steel Design Course, Jenna Williams, Mark William Wright, Michael James Deigert, Anahid A. Behrouzi

Architectural Engineering

During Fall 2017, Spring and Fall 2018 quarters, various hands-on design, fabrication, and large-scale experimental projects were incorporated into a 10-week undergraduate structural steel design course offered in the Department of Architectural Engineering at California Polytechnic State University – San Luis Obispo. Through these projects students investigated one or two unique steel lateral force resisting systems (LFRS) consisting of either: special moment frame (SMF), special concentric braced frame (SCBF), and/or buckling restrained braced frame (BRBF). Students completed design calculations per the American Institute of Steel Construction steel building and seismic codes, visualized their final design using AutoCAD software, constructed and …

Analysis Of The System Response Of A Spray Passive Downdraft Evaporative Cooling System, Daeho Kang, Richard K. Strand

Publications and Research

A spray Passive Downdraft Evaporative Cooling (PDEC) system achieves great savings for space cooling and improves indoor environmental quality by supplying a large amount of fresh outdoor air. As previous studies heavily focused on the energy saving capability of a spray PDEC system due to lack of methods for a detailed analysis, the influence of cool humid supply air from a spray PDEC system in a space in buildings has not been comprehensively studied. This study is intended to evaluate the competence of a spray PDEC system as a primary cooling system in typical spaces in a primary school building …

E-Learning Tools To Facilitate Instruction Of A Large Enrollment Structural Engineering Course, Maelle Van Thienen, James Boon Piang Lim, Anahid A. Behrouzi, Pablo Garcia, Wyatt Banker-Hix

Architectural Engineering

A significant challenge in teaching large civil engineering courses is engaging and providing feedback to students in a meaningful and timely manner. This paper presents a solution that uses e-learning tool Xorro-Q in the successful instruction of a Structures II course of 250+ second year students since 2016 at a research-intensive university in New Zealand.

During the course, Xorro-Q has been utilized as an online practice-based learning tool where students can repeat questions without penalty and automatically receive detailed instructor-developed feedback (diagrams, text, or link to website/video) in response to specific incorrect answers. Additionally, Xorro-Q permits a variety of questions …

Investigation Of Grout - A Comparison Of Standard Grout Mix To Self-Consolidating Grout Mix, Rachel Garcia Chandler

Architectural Engineering

Masonry is a major structural material for low rise buildings, however the design of masonry buildings is rarely taught as a formal course at most universities. As part of the educational experience and to become familiar with the specifications and testing procedures for grouted masonry, a student run experiment on varying the water to cement ratio of masonry grout was conducted. The purpose is to report on the effects of changing the water-to-cement (W/C) ratios in a standard grout mix. The typical W/C ratio is approximately 0.80:1.00. In order to show the effects of increasing water in a grout mix, …

Cable Suspended Structure-Antanas Panavas, Roger Pena, Dean Seydel Becker, Tracy Destiny Doan

Architectural Engineering

This project is based on a roof system designed by Antanas Panavas. The design of the structure is a cable supported roof system that includes nonprismatic glulam beams. The structure itself is a self stressed system that has never been constructed and is still in the analysis stage.

Project included analysis of the structure and a detailed process of how to model cables using SAP2000.

Topology And Form Finding Via Genetic Algorithms, Michael Goldenberg, Nick Coburn

Architectural Engineering

The following presents an approach to early applications of the Galapagos program as a means to optimize structural forms. The process was conducted with Rhino’s Grasshopper program, the structural analysis plug-in, Karamba, and the genetic algorithm solver, Galapagos. This topological form finding process was based on flexible parameters that modified brace and column locations, and diaphragm size and positions.

This process worked by having Galapagos modify a parametric model which had initial randomly generated variables for the genomes. After structural analysis, Galapagos was tasked with changing the form in order to minimize overall displacement of the structure. Being an evolutionary …

Axial Testing Of Makeshift Buckling Restrained Braces, Daniel T. Item, Corey Huang

Architectural Engineering

The testing of lateral force resisting systems is a concept that is very open to discussion and optimization. We seek to find the bounds of different materials as they act in a buckling restrained brace system in hopes of providing new methods of design for future structural engineering communities. By balancing budget, customization, and material availability we are able to determine what factors may benefit, or lack to benefit, the system at hand.

Timber-Strong Design Build Senior Project, Corbin S. Morisada

Architectural Engineering

The 2019 Timber-Strong Design Build Competition was developed by the American Wood Council, Simpson Strong-Tie Company Inc, and APA - The Engineered Wood Association to cultivate timber design, building, and sustainability experience for students. Participating students gained exposure to performance analysis, construction management, building practices, and project bid preparation while practicing as a design construction firm. In the process of this hands-on experience, students were expected to procure all building materials and tools themselves.

The Timber Strong senior project consisted of participating in the Timber-Strong competition, then re-purposing the structure for use as a playhouse in a pre-school. The intent …