Architectural Engineering Commons^™

Digital Construction And Bim Research In Ireland 2016-2020, Barry Mcauley, Roger P. West, Alan V. Hore

Conference papers

As the construction industry opens up post pandemic, new and significant challenges will demand considerable expertise, not least in financial viability, solving the housing crisis and facing the very significant climate change pressures to make the industry less wasteful and less carbon intensive. This presents an excellent opportunity to further inculcate aspects of lean construction, particularly BIM into many aspects of construction not traditionally associated with digital construction, provided the necessary expertise is available and known to exist. Following a well-received recent conference paper summarising BIM-related research published by academics in Ireland’s higher education institutions in 2020, this paper will …

Comparison Between Precast And Cast-In-Place Reinforced Concrete Structures In Mexico City, Santiago Rodriguez Sanchez

English Language Institute

Both Precast and Cast-in-place reinforced concrete structures have its own advantages and disadvantages. However, Precast RC structures have more advantages than Cast-in-place RC structures. Furthermore, it has been found that, under seismic loads, Precast structures can behave similar to Cast-in-place ones. Therefore Precast structures are an optimal option in Mexico City.

Evaluating Prediction Models Of Creep And Drying Shrinkage Of Self-Consolidating Concrete Containing Supplementary Cementitious Materials/Fillers, Micheal Asaad, George Morcous

Faculty Publications in Architectural Engineering

Supplementary cementitious materials (SCMs) and fillers play an important role in enhancing the mechanical properties and durability of concrete. SCMs and fillers are commonly used in self-consolidating concrete (SCC) mixtures to also enhance their rheological properties. However, these additives could have significant effects on the viscoelastic properties of concrete. Existing models for predicting creep and drying shrinkage of concrete do not consider the effect of SCM/filler on the predicted values. This study evaluates existing creep and drying shrinkage models, including AASHTO LRFD, ACI209, CEB-FIP MC90-99, B3, and GL2000, for SCC mixtures with different SCMs/fillers. Forty SCC mixtures were proportioned for …

Designing Gfrp-Reinforced Tilt-Up Wall Panels, Fray F. Pozo-Lora, Marc Maguire

Faculty Publications in Architectural Engineering

Tilt-up construction was effectively enabled on a wide scale in 1979, when the ACI committee 551 report on Tilt-up construction was published, the Recommended Tilt-Up Wall Design, aka, the Yellow Book and the subsequent ACI-SEASC Task, aka the Green Book, and another Tilt-up design and construction manual developed by the ACI in 1988. The Tilt-up Concrete Association was created in 1986 by a group of industry professionals who had the need of an organization dedicated to the industry. ACI 551 maintains a document outlining the standard practice for contemporary Tilt-up design and construction. The ACI 551 document does not consider …

The Facility Infection Risk Estimator™: A Web Application Tool For Comparing Indoor Risk Mitigation Strategies By Estimating Airborne Transmission Risk, Marcel Harmon, Josephine Lau

Faculty Publications in Architectural Engineering

The COVID-19 pandemic created needs for (a) estimating the existing airborne risk of infection from SARS-CoV-2 in existing facilities and new designs and (b) estimating and comparing the impacts of engineering and behavioural strategies for contextually reducing that risk. This paper presents the development of a web application to meet these needs, the Facility Infection Risk Estimator™, and its underlying Wells–Riley based model. The model specifically estimates (a) the removal efficiencies of various settling, ventilation, filtration and virus inactivation strategies and (b) the associated probability of infection, given the room physical parameters and number of individuals infected present with either …

40 Sets Of Strong Ground Motion Records Convey All Design Response Spectrums Located In Tartous, Syria, Dr. Seraj Jdyd

Journal of the Arab American University مجلة الجامعة العربية الامريكية للبحوث

Selecting seismic records in Global Standards is, until now, based on matching design response spectrum, where records should have seismological characteristics similar to the expected earthquake for the considered site (magnitude, distance, fault mechanism and soil conditions). Then it is necessary to scale these records to match the intensity of the earthquake expected for the site. Generally, scaling can be made by ground motions uniform scaling in time domain to best match (in average) the target spectrum within a period range of interest. Design ground motions are typically prescribed by smooth response spectra. But it is preferred to use a …

Performance Evaluation Of A Prestressed Belitic Calcium Sulfoaluminate Cement (Bcsa) Concrete Bridge Girder, Nick Markosian, Raed Tawadrous, Mohammad Mastali, Robert J. Thomas, Marc Maguire

Faculty Publications in Architectural Engineering

Belitic calcium sulfoaluminate (BCSA) cement is a sustainable alternative to Portland cement that offers rapid setting characteristics that could accelerate throughput in precast concrete operations. BCSA cements have lower carbon footprint, embodied energy, and natural resource consumption than Portland cement. However, these benefits are not often utilized in structural members due to lack of specifications and perceived logistical challenges. This paper evaluates the performance of a full-scale precast, prestressed voided deck slab bridge girder made with BCSA cement concrete. The rapid-set properties of BCSA cement allowed the initial concrete compressive strength to reach the required 4300 psi release strength at …

Discrete Rigid Block Analysis To Assess Settlement Induced Damage In Unreinforced Masonry Façades, Ryan Ehresman, Nathan Taylor, Bora Pulatsu, Ece Erdogmus

Faculty Publications in Architectural Engineering

In this study, a system of discontinuous rigid blocks is employed to simulate the possible damage mechanisms in unreinforced masonry (URM) façades and load-bearing frame systems subjected to settlement using the discrete element method (DEM). First, the employed modeling strategy is validated utilizing the available experimental results presented in the literature. Once there is a good agreement between the computational models and experimental findings, a sensitivity analysis is performed to quantify the influence of the input parameters defined in the DEM-based numerical model. Finally, the proposed modeling strategy is further utilized to assess the damage pattern that may develop in …

Determination Of The Total Phenolic Content, Total Antioxidant Capacity And Radical Scavenging Activity Of Jordanian Royal Jelly And Honey Samples, Hamed Takruri, Ranim Alkhedr

Jerash for Research and Studies Journal مجلة جرش للبحوث والدراسات

Honey and royal jelly are two functional bee-hive products with antioxidant activity.This study aimed at investigating the total phenolic content, antioxidant capacity and radical scavenging activity of royal jelly, multiflora honey and citrus honey. Royal jelly, multiflora honey, and citrus honey samples were analyzed for the total phenolic content using Folin-Ciocalteau method, for total antioxidant capacity using FRAP assay. Also, DPPH assay was used for assessing radical scavenging activity. The results revealed that the total phenolic contents, the total antioxidant capacities, as well as DPPH scavenging activities of RJ were higher than those of Multifloral and citrus honey,. Furthermore, …

Student-Led Summer Diversity Workshops For Built-Environment Majors, Dolores Herrera, Claire Marie Leader, Soham Patel, Anahid Behrouzi

Architectural Engineering

In response to the instances of racial injustice in Spring 2020, members of the College of Architecture & Environmental Design (CAED) Student Diversity, Equity & Inclusion (SDEI) committee at the authors’ institution developed online summer workshops focused on topics of anti-racism titled the Unlearning Series. This series began with the mission of questioning practices and education in the built environment that are integrated in formal instruction. The goal is to utilize an alternative method of education where participants (students, faculty, staff, and administrators) recognize how their discipline shapes and supports systems of oppression, while giving them tools to combat it. …

Large-Scale Timber Shear Wall Experimentation In An Undergraduate Design Course, Taylor Christian Cardinale, Michael James Deigert, Anahid Behrouzi, John W. Lawson

Architectural Engineering

Despite the widespread use of light-frame timber construction in residential building, wood design courses are typically offered to graduate students and focus on member-level calculations for gravity and lateral systems per the National Design Specification (NDS) for Wood Construction. In years prior, the 10-week advanced undergraduate class described in this paper exposed students through a system-level perspective through a group design project of a multistory, mixed-use wood building located in a seismic region. A significant course modification in Fall 2020 involved the two class sections constructing and testing large-scale wood shear walls representing a one-story segment of a wall present …

A Comparison Between Ultrasonic Guidedwave Leakage And Half-Cell Potential Methods In Detection Of Corrosion In Reinforced Concrete Decks, Ahmad Shoaib Amiri, Ece Erdogmus, Dana Richter-Egger

Faculty Publications in Architectural Engineering

This article presents the advantages and limitations of a recently developed Ultrasonic Guided Wave Leakage (UGWL) method in comparison to the well-known Half-Cell Potential (HCP) method in their ability to detect corrosion in reinforced concrete (RC) bridge decks. This research also establishes a correlation between UGWL data and chloride content in concrete RC slabs. Concrete slabs submerged in a 10% NaCl solution were monitored using both methods over a period of six months. The chloride content from the three cores (0.84, 0.55, and 0.18%) extracted from the slab after the 6-month long process all exceeded the chloride threshold values suggested …

Sistema Modular Arquitectónico Como Dispositivo De Aprendizaje Para El Fortalecimiento De Las Competencias Lógico-Matemáticas En El Contexto De La Educación Rural, Andrés Alejandro Negrete Granados, Camilo Alejandro Arias Osorio

Arquitectura

La matemática es uno de los temas más antiguos que el ser humano ha investigado puesto que está presente en todos los hábitos de nuestra vida cotidiana, por ello es importante tenerlo presente desde las primeras etapas del desarrollo cognitivo, ya que son importantes en otros campos del conocimiento, contribuyen al desarrollo el pensamiento lógico y son un medio de comunicación universal.

Assessment Of Carbon Dioxide Emission And Its Impact On High-Rise Mixed-Use Buildings In Egypt, Ahmed Salah Hamza

Theses and Dissertations

With Egypt's vision of 2030 focusing on sustainable development with a true emphasis on Carbon Dioxide (CO₂) emission reduction in the newly built cities and high-rise buildings, efforts are exerted on various levels towards accomplishing the vision’s goals. This is achieved through multiple tools and models associated with aiding the reduction of carbon emissions, yet not a clear one was introduced for the mixed-use buildings in Egypt.

Through this work, a significant gap was identified with respect to high-rise buildings carbon emission assessment in Egypt. This was a main driving force for this work in an attempt to …

Creating An Online Concrete Masonry Course For Accessibility, Dolores Herrera

Architectural Engineering: Graduate Reports

An online undergraduate course in masonry design was created for an asynchronous delivery format and to fulfill web accessibility requirements. This report outlines the process of the course creation with Canvas as the host platform. Emphasis is placed on how content including lecture presentations, assignments, and course modules were developed with strong graphic software and communication skills. For accessibility, the content creation was guided by the Web Content Accessibility Guidelines (WCAG) 2.1 Level AA Standards. Lastly, the significance of learning masonry design in undergraduate structural engineering curriculum is discussed in addition to the structural engineering industry practices used to complete …

The Robotics Academy: An Immersive Learning Game For Training Industrial Roboticists, Shahin Vassigh, Eric Peterson, Biayna Bogosian, Jorge Tubella

Building Technology Educator's Society

Emerging technologies, including artificial intelligence (AI), robotics, digital fabrication, spatial computing, and immersive media such as Augmented Reality (AR) and Virtual Reality (VR), are changing the employment landscape across a broad range of industries. It is anticipated that these technologies will enhance research and innovation, increase productivity, and spur new types of occupations and entrepreneurship. In the architecture, engineering, and construction (AEC) fields, automated building design with advanced software facilitating mass customization will change how buildings are designed. Robotics and automation, particularly in prefabrication and large-scale 3D printing of buildings is expected to change how buildings are built. Automation technology …

High Tech | Low Tech: Teaching Augmented Fabrication In The Zoom Era, Emily Baker

Building Technology Educator's Society

High Tech | Low Tech: Experiments in Spatial Computing for Design and Fabrication was an advanced elective offered in online format in Fall 2020. The class sought both to introduce computational skills and lead students in explorations and discussions around the emerging potential of design and fabrication that incorporate augmented reality (AR). While AR and the free Fologram mobile app that connects to Rhino/Grasshopper were the central focus, the course content was meant to foster critical consideration of design technologies through history. A theme that emerged through the semester was a critique of the architect’s fascination with and reliance on …

The Impact Of Material Lifespan On Carbon Analysis, Tom Spector, Melissa Russell, Khaled Mansy, John Phillips, Jeanne Homer

Building Technology Educator's Society

Carbon impact estimation software programs have simplified the processes for evaluating the carbon contribution of proposed buildings and can be relatively accurate down to building assembly. However, the simplifying assumption that a building’s embodied carbon is entirely a function of the production and installation, while a building’s carbon-in-use is the province of a building’s operational life can lead to misleading results, and hence, faulty decisions, when the lifespans of a building’s individual materials differ greatly from the building’s lifespan. The primary study became a way to point out those disparities between material life expectancy and carbon impact by studying the …

Cross Institutional Vertical Studio Collaboration: Extending Boundaries During The Time Of Covid-19, Naomi Darling, Elisa Kim

Building Technology Educator's Society

This paper reflects upon a cross-institutional and multi-level studio collaboration developed in response to the mid-semester closures of Mount Holyoke College and Smith College during the spring 2020 Covid-19 pandemic. Our collaboration was a conscious effort to offer our students an educational opportunity driven by both the students’ and our own desires to meaningfully address the unfolding global pandemic. Within the context of the liberal arts, our focus was to continue to develop the technical capacities of our students, while providing opportunities for vertical collaboration as well as an additional layer of lateral collaboration exposing students to rapid design work …

Concrete Environments, Duane Mclemore, Jacob Gines

Building Technology Educator's Society

Concrete Environments was a two-week design charette in the Fall 2019 3a Housing Studio at the School of Architecture at Mississippi State University. Students explored how architecture created with 3d Printed Concrete can relate to the concepts of dwelling, interaction, and meaning typically explored in the Housing Studio - in addition to examining the materials and geometry of Advanced Fabrication.

Working toward Project Goals, the students were challenged to not just meet Physical and Functional Constraints, but to use these to equally examine the project’s epistemology, phenomenology, and technology.

Seeking to understand the human body and its …