Technological University Dublin
University of Nebraska
5th Level Student, Faculty of Architecture - Design & Built Environment, Beirut Arab University, Lebanon
Universidad de La Salle, Bogotá
Georgia Southern University
University of Massachusetts Amherst
Wood Diaphragm Deflections. Part I: Generalizing Standard Equations Using Mechanicsbased Derivations For Panel Construction,
2023
California Polytechnic State University, San Luis Obispo
Wood Diaphragm Deflections. Part I: Generalizing Standard Equations Using Mechanicsbased Derivations For Panel Construction, John W. Lawson, Scott Breneman, Marco Lo Ricco
Architectural Engineering
Horizontal wood diaphragm systems, whether decked with conventional or mass timber panels, transfer wind and seismic loads to vertical elements of the lateral force-resisting system (LFRS), in flexible, rigid, or semi-rigid fashion. Characterizing and calculating the resulting diaphragm deflections determines the distribution of forces to critically loaded components and a significant portion of lateral building translations and rotations. Deflection equations for sheathed wood structural panel (WSP) diaphragms are well established in U.S. design standards in a 4-term expression that models flexural, shear, and fastener-slip deformations and its full derivation using principles of mechanics is provided herein. Derivations of similar equations …
Wood Diaphragm Deflections. Part Ii: Implementing A Unified Approach For Current Clt And Wsp Practice,
2023
California Polytechnic State University, San Luis Obispo
Wood Diaphragm Deflections. Part Ii: Implementing A Unified Approach For Current Clt And Wsp Practice, John Lawson
Architectural Engineering
Horizontal wood diaphragm systems, whether decked with conventional or mass timber panels, transfer wind and seismic loads to vertical elements of the lateral force-resisting system (LFRS), in flexible, rigid, or semi-rigid fashion. Characterizing and calculating the resulting diaphragm deflections determines the distribution of forces to critically loaded components and a significant portion of lateral building translations and rotations. Deflection equations for sheathed wood structural panel (WSP) diaphragms are well established in U.S. design standards in a 4-term expression that models flexural, shear, and fastener-slip deformations, but similar equations for cross-laminated timber (CLT) diaphragms have yet to unfold, despite growing industry …
Utilizing Waste Latex Paint Toward Improving The Performance Of Concrete,
2023
Missouri University of Science and Technology
Utilizing Waste Latex Paint Toward Improving The Performance Of Concrete, Mohamed Leithy, Eslam Gomaa, Ahmed A. Gheni, Mohamed Elgawady
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
In this paper, incorporating the waste latex paint (WLP) into the conventional concrete as a partial replacement of sand to improve its durability was investigated. The fresh and hardened characterizations, in addition to the durability of concrete, were examined. The slump test was used to evaluate the fresh properties, while the hardened properties were evaluated through the volume of voids and absorption rate, in addition to the compressive, splitting tensile, and flexural strengths tests. The durability performance was evaluated by the surface resistivity, bulk electrical resistivity, as well as freeze and thaw resistance tests. The results showed a reduction in …
Machine Learning-Based Seismic Damage Assessment Of Residential Buildings Considering Multiple Earthquake And Structure Uncertainties,
2023
Missouri University of Science and Technology
Machine Learning-Based Seismic Damage Assessment Of Residential Buildings Considering Multiple Earthquake And Structure Uncertainties, Xinzhe Yuan, Liujun Li, Haibin Zhang, Yanping Zhu, Genda Chen, Cihan H. Dagli
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Wood-frame structures are used in almost 90% of residential buildings in the United States. It is thus imperative to rapidly and accurately assess the damage of wood-frame structures in the wake of an earthquake event. This study aims to develop a machine-learning-based seismic classifier for a portfolio of 6,113 wood-frame structures near the New Madrid Seismic Zone (NMSZ) in which synthesized ground motions are adopted to characterize potential earthquakes. This seismic classifier, based on a multilayer perceptron (MLP), is compared with existing fragility curves developed for the same wood-frame buildings near the NMSZ. This comparative study indicates that the MLP …
A Spike-Shaped Anchorage For Steel Reinforced Polymer (Srp)-Strengthened Concrete Structures,
2023
Missouri University of Science and Technology
A Spike-Shaped Anchorage For Steel Reinforced Polymer (Srp)-Strengthened Concrete Structures, Xingxing Zou, Keenan L. Mcburney, Lesley H. Sneed
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Steel reinforced polymer (SRP) composite has recently emerged as an effective and economical solution for strengthening of reinforced concrete (RC) structures. Premature debonding failure of unanchored SRP at low load levels generally governs the performance of RC structures strengthened with externally bonded SRP. Therefore, a novel yet simple spike-shaped anchorage system was proposed in this study to prevent the debonding failure of SRP and to improve the interfacial shear capacity. Experimental investigation through single-lap shear tests of SRP-concrete joints showed that the anchorage system changed the failure mode from composite debonding to fiber rupture. In addition, the anchorage system substantially …
Effect Of Internal Curing And Shrinkage-Mitigating Materials On Microstructural Characteristics Of Fiber-Reinforced Mortar,
2023
Missouri University of Science and Technology
Effect Of Internal Curing And Shrinkage-Mitigating Materials On Microstructural Characteristics Of Fiber-Reinforced Mortar, Kamran Aghaee, Kamal Khayat
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Internal curing (IC) and other shrinkage mitigating materials are employed to reduce shrinkage and risk of cracking. This study investigates the efficiency of individual versus combined use of IC and shrinkage mitigating materials on key characteristics of fiber-reinforced mortar (FRM). The investigated mixtures include a 25% pre-saturated lightweight sand (LWS) that is added individually and combined with 10% CaO-based expansive agent (EA) and 2% shrinkage reducing admixture (SRA). This elucidates the synergistic effect of high content IC and EA/SRA on macro- and micro-mechanical characteristics of FRM, especially at the interface of the matrix with fibers. Mechanical properties, microstructural characteristics, and …
Prediction Of Compressive Strength And Evaluation Of Different Theoretical Standards And Proposed Models Of Brick Columns Confined With Frp, Frcm, Or Srg System,
2023
Missouri University of Science and Technology
Prediction Of Compressive Strength And Evaluation Of Different Theoretical Standards And Proposed Models Of Brick Columns Confined With Frp, Frcm, Or Srg System, Zuhair Al-Jaberi, John J. Myers
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Strength Capacity of Confined Masonry Column is One of the Topics that Need to Be Studied. in This Study, the Efficiency of using Different Types of Advanced Composite (Non-Corrosive Materials) Such as Fiber Reinforced Polymer (FRP), Fiber Reinforced Cementitious Matrix (FRCM), or Steel Reinforced Grout (SRG) in Confining Masonry Columns is Investigated. a Wide Range of Experimental Database of Masonry Column Specimens Has Been Collected from the Results that Available in Scientific Literatures. Different Theoretical Standards and Proposed Models that Used to Predict the Capacity of Masonry Columns Confined with FRP and FRCM Are Evaluated based on Collected Experimental …
Privacy Perceptions Transformation In Cairo’S Home Designs - A Case Study: Gated Communities,
2023
American University in Cairo
Privacy Perceptions Transformation In Cairo’S Home Designs - A Case Study: Gated Communities, Yasmine Esmat
Theses and Dissertations
The infrastructure of gated communities in Egypt’s New Cairo and 6th of October cities have become the new normal. The streets bordered by fences, walls, and the occasional gate, formed when two or more gated communities face each other, dominate the urban landscape today (Kostenwein, 2021). Nowadays, it is highly common to see billboards advertising new gated communities everywhere on the roads and bridges. Gated communities offer various privileges, and one of them is privacy. Taking Cairo city with its several gated communities as a case study, the research focuses on the transformation of privacy perception for Cairo’s home designs …
Rejuvenation Effect Of Aged Sbs-Modified Asphalt Utilizing Molecule Analysis,
2023
Missouri University of Science and Technology
Rejuvenation Effect Of Aged Sbs-Modified Asphalt Utilizing Molecule Analysis, Ke Shi, Feng Ma, Jenny Liu, Zhen Fu, Ruimeng Song, Dongdong Yuan, Chen Li
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Performance of Styrene-Butadiene-Styrene Modified Asphalt (SBSMA) is Significantly Impacted by its Aging and Regeneration. in This Research, the Molecular Dynamics Simulation Was Utilized to Investigate the Rejuvenation Effect of Active Reagents on Aged SBS Modified Asphalt through the Following Tasks: 1) Verifying the Accuracy of the Asphalt Model by Density and Solubility Parameters; 2) Assessing the Changes in the Rejuvenated Asphalt Model's Energetic Parameters and Volume Parameters, 3) Studying the Interaction Energy between SBS Molecules and Asphalt Molecule Models, and 4) Evaluating the Relative Concentration, Interfacial Interaction Energy, and Diffusion Effect of the Asphalt-Asphalt Models. the Results Indicated that …
Wast3d Potential,
2023
Rhode Island School of Design
Wast3d Potential, Andrew Larsen
Masters Theses
Waste is obsolete. Standard building industry practices are harmful to the environment. Non-traditional construction methods were examined as alternatives. Circular design logic was the guiding principle in material choice. Additive manufacturing is a proven modern method for building construction. Research on 3D printing case studies revealed that recycled plastic is a proven material and readily available. Removing plastic waste from the environment and sequestering it in architectural components gives the material a new purpose. The component of focus was a building block for a wall assembly. Inspiration was taken from the hexagonal Basalt rock formations found near volcanic fault lines. …
Sustainable Seismic Architecture: Exploring The Synergy Of Mortise-And-Tenon Joinery And Modern Timber Construction For Reducing Embodied Carbon,
2023
Rhode Island School of Design
Sustainable Seismic Architecture: Exploring The Synergy Of Mortise-And-Tenon Joinery And Modern Timber Construction For Reducing Embodied Carbon, Cong Li
Masters Theses
Abstract
This design thesis explores the potential of combining ancient Mortise-and-Tenon joinery techniques with modern timber construction to create sustainable seismic architecture that simultaneously reduces embodied carbon. By studying the enduring qualities of Mortise-and-Tenon structures and their ability to withstand earthquakes, this research uncovers a synergistic relationship between traditional joinery methods and contemporary building materials, unlocking significant opportunities for embodied carbon reduction ranging from 7 to 40% compared to other modern architecture construction.
The research reveals that Mortise-and-Tenon structures commonly incorporate large roof systems, acting as mass dampers that provide flexibility and distribute weight evenly to columns. By transferring the …
Investigation Of Natural Pozzolans: Analyzing The Practicality Of Natural Pozzolans As A Partial Substitute For Cement In Grout Production,
2023
California Polytechnic State University, San Luis Obispo
Investigation Of Natural Pozzolans: Analyzing The Practicality Of Natural Pozzolans As A Partial Substitute For Cement In Grout Production, Jadyn I. Breien, Andrew J. Baro, Logan T. Marino
Architectural Engineering
This senior project aims to investigate whether natural pozzolans are more sustainable than fly ash and a sufficient substitute for cement in the production of grout. By following the intent of the ASTM (American Society of Testing and Materials) standards, a conclusion will be made to determine if natural pozzolans can contribute comparable strength in compression. The objective is to prove that natural pozzolans should be utilized in the production of grout rather than alternatives such as fly ash because it can provide similar strength while being more economical and more sustainable.
Xenabloom,
2023
California Polytechnic State University, San Luis Obispo
Xenabloom, Sophia Maglabe, Ryer Lauth, Elizabeth Shaw, Sheyna Rongong
Architectural Engineering
Proposal for an architectural and structural design of a shade structure at the Leaning Pine Arboretum, employing the Xenaform typology of Poly Shells, LLC.
The Leaf For Leaning Pine Arboretum,
2023
California Polytechnic State University, San Luis Obispo
The Leaf For Leaning Pine Arboretum, Maria Boyle, Shelby Holmquist, Andrew Duong
Architectural Engineering
The goal of this ARCE 415 senior project course was to create a shade structure that could be incorporated into The Leaning Pine Arboretum, located on campus at Cal Poly, San Luis Obispo. From start to finish, these three ARCE students took on the role of form-finders to form-testers to form-makers. We are putting the "architectural" back in architectural engineering as we reclaim the historical tradition of the engineer as the form finder. In many of our design labs we focused primarily on sizing members and analysis, just using a structure that the architect already had established. In this one-of-a-kind …
Arce 415 Portfolio: The Green Bird Of Paradise,
2023
California Polytechnic State University, San Luis Obispo
Arce 415 Portfolio: The Green Bird Of Paradise, Kristofer R. Rickansrud, Ryan Chan, Brendan Peers, Joel Santoyo
Architectural Engineering
A design project creating a Polyshell sunshade structure for the Leaning Pine Arboretum.
Crescent: Proposed Arboretum Shade Structure,
2023
California Polytechnic State University, San Luis Obispo
Crescent: Proposed Arboretum Shade Structure, Hayle Jones, Ian Kelly, Emilie Phuong, Brooke Heitman
Architectural Engineering
This is a sunshade structure that uses shells as the facade to create the enclosing of this structure.
Polymöbi: Single-Surface Timber Polyshell Shade Structure,
2023
California Polytechnic State University, San Luis Obispo
Polymöbi: Single-Surface Timber Polyshell Shade Structure, Ryan Khieu, Tom Sesin, Gabriel Garfias, Evan Brooks
Architectural Engineering
Overall design process of incorporating Polyshells into a sunshade structure, while addressing client needs, materiality, constructability, and life safety.
Concrete Masonry Program (Cmd21) Usability,
2023
California Polytechnic State University, San Luis Obispo
Concrete Masonry Program (Cmd21) Usability, Allie G. Decker
Architectural Engineering
The Concrete Masonry Design Program, CMD21, can be utilized in the design of beams, columns, and walls, but this project focuses on the use of the program to analyze shear walls loaded in-plane. This report critiques and describes the learning process behind the CMD21 program.
Sky Survey Radio Telescope,
2023
California Polytechnic State University, San Luis Obispo
Sky Survey Radio Telescope, Jack E. Mcguigan
Electrical Engineering
This document outlines the design of a radio telescope designed to perform hydrogen line sky surveys. The telescope produces radio images mapping the intensity and relative velocities of hydrogen concentrations to their sky coordinates. Over the course of a day, the telescope images the regions of space visible to it, allowing sky survey imagery to be updated daily. Sky survey images are comprised of an array of pixels corresponding to specific sky coordinates. Each 8-bit RGB pixel contains information on the concentrations of hydrogen in the brightness and relative velocity in the color. Radio images mapping the concentrations and velocities …
The Center For Centering Dome,
2023
California Polytechnic State University, San Luis Obispo
The Center For Centering Dome, Olek Piechaczek, Ryan M. Scharf
Architectural Engineering
The Center for Centering seeks to create a large-scale healing center, conducive to individual centering of the mind and body. This mobile installation provides a relaxing, enclosed space while still maintaining a connection to the outdoors. The clients liked the idea of having a pop-up installation that could be easily set up as a touring display. With a deadline for installation looming in June 2022, a team of students had five months to design and manufacture the structure.
In winter 2022, the students developed custom geometry to minimize the number of individual parts and built a ¼ scale model of …
