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Full-Text Articles in Architecture
Evaluating Existing And Proposing New Seismic Design Provisions For Rigid Wall - Flexible Diaphragm Buildings, John Lawson, Dominic Kelly, Maria Koliou, Andre Filiatrault
Evaluating Existing And Proposing New Seismic Design Provisions For Rigid Wall - Flexible Diaphragm Buildings, John Lawson, Dominic Kelly, Maria Koliou, Andre Filiatrault
Architectural Engineering
Buildings with heavy concrete on masonry walls supported by flexible wood or steel deck roof diaphragms are ubiquitour across the United States and the rest of North America. The current seismic design approach is based on the equivalent lateral force (ELF) method whose underlying assumptions significantly differ from the actual dynamic response of these buildings. The seismic behavior of rigid wall-flexible rood diaphragm (RWFD) Buildings is dominated by the diaphragm's response instead of the wall' in-plane response. Furthermore, the diaphragm's ductility and overstrength capacity is unique to its own construction. Yet the current design methodology employed by practitioners directly ties …
City Of Concord Complete Streets Study, William W. Riggs, Charlie Coles, Megyn Rugh, Camille Jackson
City Of Concord Complete Streets Study, William W. Riggs, Charlie Coles, Megyn Rugh, Camille Jackson
City and Regional Planning
The purpose of this report is to summarize the data collected as a part of the Concord Complete Streets Study and to provide the City with preliminary support in the progress to construct a safer, more bike and pedestrian friendly Concord. The developments and visions found in this document provide a platform for continued discussion on creating a more pedestrian and bicycle friendly environment that encourages other forms of transportation and provides alternatives to dependency on automobiles.
Distribution Of Chord Forces In Large Panelized Wood Roof Diaphragms, Weichang Pang, Chun Ni, John Lawson, Sami Pant
Distribution Of Chord Forces In Large Panelized Wood Roof Diaphragms, Weichang Pang, Chun Ni, John Lawson, Sami Pant
Architectural Engineering
Flexible wood roof diaphragms are very common in the United States, both for residential buildings and large-scale commercial buildings. Due to its simplicity, the traditional diaphragm design method is commonly used in diaphragm design, in particular for the design of diaphragms with relatively small dimensions. The traditional diaphragm design method assumes the axial chord forces developed in framing members under in-plane loading are carried only by the perimeter elements. This method has always been thought to be a conservative design method, especially when applied to large diaphragms. In recent years, the engineering community began to question the applicability of the …
Development Of Seismic Design Methodologies For Rigid Wall-Flexible Diaphragm Structures, John W. Lawson, D. J. Kelly, M. Koliou, A. Filiatrault
Development Of Seismic Design Methodologies For Rigid Wall-Flexible Diaphragm Structures, John W. Lawson, D. J. Kelly, M. Koliou, A. Filiatrault
Architectural Engineering
Evidence indicates that the dynamic behavior of Rigid Wall – Flexible Diaphragm (RWFD) structures is dominated by the diaphragm’s response instead of the walls’ response, and this is a significant departure from the underlying assumptions of the widely used equivalent lateral force method in current building codes. RWFD buildings are common in North America and other parts of the world, and incorporate rigid in-plane concrete or masonry walls and flexible in-plane wood or steel roof diaphragms. With the use of a numerical computer modeling framework developed specifically for this type of building, this study sets out to investigate the seismic …
Examining The Applicability Of Design Methods For Large Panelized All-Wood Roof Diaphragms Under Seismic Loading, W. Pang, S. Pant, C. Ni, John W. Lawson
Examining The Applicability Of Design Methods For Large Panelized All-Wood Roof Diaphragms Under Seismic Loading, W. Pang, S. Pant, C. Ni, John W. Lawson
Architectural Engineering
The use of flexible roof diaphragms is very common in the United States, both for residential buildings and large-scale commercial buildings. Due to its simplicity, the traditional diaphragm design method is commonly used in diaphragm design, in particular for the design of diaphragms with relatively small dimensions. The traditional diaphragm design method assumes the axial chord forces developed in framing members under in-plane loading are carried only by the perimeter elements. The traditional diaphragm design method has always been thought to be a conservative design method, especially when applied to large diaphragms. In recent years, the engineering community began to …
Numerical Framework For Seismic Collapse Assessment Of Rigid Wall-Flexible Diaphragm Structures, M. Koliou, A. Filiatrault, D.J. Kelly, John W. Lawson
Numerical Framework For Seismic Collapse Assessment Of Rigid Wall-Flexible Diaphragm Structures, M. Koliou, A. Filiatrault, D.J. Kelly, John W. Lawson
Architectural Engineering
This study focuses on the development of a two dimensional (2D) simplified numerical framework of rigid wall-flexible diaphragm (RWFD) structures that can be used to validate seismic design approaches. This type of low-rise industrial buildings, which is widely used in North America, incorporates rigid in-plane concrete or masonry walls and flexible in-plane wood, steel or “hybrid” roof diaphragms. The numerical modeling is detailed enough to capture the nonlinear seismic response of RWFD buildings, but simplified enough to efficiently conduct a large number of nonlinear time-history dynamic analyses. The 2D numerical modeling framework is based on a three step sub-structuring approach …
Greta Place As A Historic District, William Riggs
Greta Place As A Historic District, William Riggs
City and Regional Planning
This report, forwarded to the City of San Luis Obispo's Cultural Heritage Commission proposes Greta Place as a mid-century modern historic district. Greta is a small street located centrally in San Luis Obispo, CA (See Figure 1). It has a unique and distinct mid-century presence that is both a well-preserved and concentrated example of a collection of Mid-century single-family homes produced in San Luis Obispo as the City began to expand in the 1950s. It specifically called out in the City’s Historic Context Statement when it describes the street as “a cohesive collection of one-story Mid-century Modern houses along Greta …
No Admixture, Sustainable, Self-Consolidating Grout, Craig Baltimore, James P. Mwangi, Eric W. Bateman
No Admixture, Sustainable, Self-Consolidating Grout, Craig Baltimore, James P. Mwangi, Eric W. Bateman
Architectural Engineering
The consolidation of grout in concrete masonry unit (CMU) walls is labor-intensive. Also, the grout’s Portland cement content has a high embodied energy demand – a non-sustainable characteristic. For the labor-intensive issue, chemical admixture self-consolidating grouts have been used in walls 12.67 ft. (3.86 m) tall, however the chemical additive can impose new limitations on the grout (non-robust characteristics). No admixture self-consolidating grout with high percentage Portland cement replacement have potential for robust and sustainable application. This paper reports on the consolidation of no admixture self-consolidating grout made by substituting high percentages of Portland cement with Type-F fly ash and/or …
Using K’Nex To Teach Large Scale Structures To Architects And Constructionstudents, Allen C. Estes, Craig Baltimore
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 …
New Civil Engineering Program Criteria: How The Sausage Is Being Made, Allen Estes, Thomas A. Lenox
New Civil Engineering Program Criteria: How The Sausage Is Being Made, Allen Estes, Thomas A. Lenox
Architectural Engineering
The American Society of Civil Engineers organized the Civil Engineering Program Criteria Task Committee in October 2012 whose charge is to determine if the current ABET Civil Engineering Program Criteria (CEPC) should be changed to reflect one or more of the 24 outcomes of the second edition of the Civil Engineering Body of Knowledge published in 2008. After over a year of conference calls and face to face meetings, the committee has drafted and disseminated a proposed CEPC. This paper chronicles the development of the proposed criteria by sharing a review of the literature, the committee’s methodology and process, the …
Vision For Embarcadero North, Morro Bay, California, Crp 553 Project Planning Lab
Vision For Embarcadero North, Morro Bay, California, Crp 553 Project Planning Lab
CRP 553 Project Planning Laboratory
No abstract provided.
Broadway Corridor Study Public Outreach Report, Winter 2013, Crp 410/ 411 Community Planning Lab
Broadway Corridor Study Public Outreach Report, Winter 2013, Crp 410/ 411 Community Planning Lab
City and Regional Planning Studios and Projects
The Broadway Corridor Study Public Outreach Report summarizes the public outreach efforts conducted as part of the process to develop alternative concepts for future development and circulation along the Broadway Corridor in Redwood City, California. These efforts were conducted as a class project by fourth year students in the City and Regional Planning Department at California Polytechnic State University from September of 2013 to March of 2014.
City Of Guadelupe: General Plan Update Background Report, Winter 2012, Crp 552/ 554 Community And Regional Planning Studio
City Of Guadelupe: General Plan Update Background Report, Winter 2012, Crp 552/ 554 Community And Regional Planning Studio
City and Regional Planning Studios and Projects
No abstract provided.
Connecting Cayucos: Visions And Actions For Public Space, Spring 2014, Crp 553 Project Planning Lab
Connecting Cayucos: Visions And Actions For Public Space, Spring 2014, Crp 553 Project Planning Lab
City and Regional Planning Studios and Projects
This document expands upon the principles set forth in the County of San Luis Obispo’s Estero Plan (2009) in the context of public space and develops site-specific recommendations to support future implementation of public space plans for Cayucos, California. This plan includes an existing conditions analysis, general goals and principles, site-specific visions and actions, as well as supporting conceptual diagrams. The main purpose of this plan is to reflect the community’s desire to preserve, protect, and enhance the public spaces of Cayucos.
Urban Design Visions For Milpitas, Fall 2013, Crp 341 Urban Design Studio
Urban Design Visions For Milpitas, Fall 2013, Crp 341 Urban Design Studio
City and Regional Planning Studios and Projects
An undergraduate class from the City and Regional Planning Department at Cal Poly San Luis Obispo was charged by the City of Milpitas Planning and Neighborhood Services Department to develop pre-planning insights, vision and urban design concepts for two strategically ocated sites in Milpitas, California Circle, and, the area around Main Street at the Serra Way intersection. This report represents a compilation of the work completed by the students in CRP 341 Urban Design Studio III during the 10-week period of Fall Quarter September-December, 2013. Instructors Vicente del Rio and Hemalata Dandekar, supported by Teaching Assistant Evan Evangelopoulos, guided the …
San Juan Bautista General Plan Update: Background Report, Fall 2014, Crp 552/ 554 Community And Regional Planning Studio
San Juan Bautista General Plan Update: Background Report, Fall 2014, Crp 552/ 554 Community And Regional Planning Studio
City and Regional Planning Studios and Projects
This Background Report is an integral part of the San Juan Bautista 2035 General Plan. Its purpose is to provide the public, the City’s decision-makers, and other agencies with detailed information about San Juan Bautista using current conditions and community input. In this way, the Background Report provides the informational basis on which the goals, policies, and programs of the San Juan Bautista General Plan are in part based. While the General Plan itself represents the official adopted goals and policies of the City, this Background Report provides only information, including the plans and programs of other agencies.
Empirically Derived Effective Stiffness Expressions For Concrete Walls, Andrew Mock, Anahid A. Behrouzi, Laura Lowes, Dawn Lehman, Daniel Kuchma
Empirically Derived Effective Stiffness Expressions For Concrete Walls, Andrew Mock, Anahid A. Behrouzi, Laura Lowes, Dawn Lehman, Daniel Kuchma
Architectural Engineering
In most cases, analysis to determine component demands for seismic design of concrete buildings employs linear elastic models in which reduced, effective component stiffnesses are used. This document i) reviews the recommendations for defining the effective flexural, shear and axial stiffness of concrete walls that are included in current design codes, standards and guidelines and ii) compares these recommendations with stiffness expressions derived directly from experimental data by the authors and others. Section 2 reviews existing empirically derived and code‐, standard‐, and guideline‐based expressions for the effective stiffness of concrete walls. Section 3 presents the process used by the authors …
Summary Of Large-Scale C-Shaped Reinforced Concrete Wall Tests, Anahid A. Behrouzi, Andrew Mock, Laura Lowes, Dawn Lehman, Daniel Kuchma
Summary Of Large-Scale C-Shaped Reinforced Concrete Wall Tests, Anahid A. Behrouzi, Andrew Mock, Laura Lowes, Dawn Lehman, Daniel Kuchma
Architectural Engineering
Flexural concrete walls (i.e., walls the yield in flexural prior to failure) are used commonly as the lateral load resisting system for mid‐ and high‐rise buildings on the West Coast. They are relatively stiff under service‐level loading, can take on various configurations to accommodate architectural constraints, and are generally assumed to exhibit ductile response under severe earthquake loading. Despite heavy reliance on concrete walls, relatively little research has been done to investigate the earthquake performance of walls with modern design details. Few data exist characterizing the performance of modern walls under variable levels of earthquake loading or the impact of …
Summary Of Large-Scale Nonplanar Reinforced Concrete Wall Tests, Anahid A. Behrouzi, Andrew Mock, Laura Lowes, Dawn Lehman, Daniel Kuchma
Summary Of Large-Scale Nonplanar Reinforced Concrete Wall Tests, Anahid A. Behrouzi, Andrew Mock, Laura Lowes, Dawn Lehman, Daniel Kuchma
Architectural Engineering
Nonplanar wall configurations are prevalent in engineering practice, yet relatively little research has addressed nonplanar walls and the earthquake response of these components remains poorly understood. A recent experimental test program conducted by the authors investigated the earthquake response of modern, ACI Code compliant C‐shaped walls subjected to unidirectional and bidirectional lateral loading. To compare the results of this study with previous experimental investigations conducted by others, this document examines laboratory tests of slender nonplanar walls available in the literature. Response histories, damage patterns, drift capacity and failure mechanisms are used to characterize the behavior of each nonplanar wall test …