Architecture Commons^™

Roof Drainage: Not My Problem ... Maybe, John Lawson

Architectural Engineering

Many structural engineers are surprised to learn that the International Building Code (IBC, 2009) requires the roof structure to be engineered for standing water weight in the vicinity of the drains and scuppers regardless of roof slope. In addition, some low-slope roofs also require special attention for water weight and stiffness for safety against ponding failures or protection against accelerated roofing deterioration. With a mixture of overlapping design disciplines between the architect, plumbing consultant and structural engineer, proper roof drainage is often not fully addressed in building design and can lead to catastrophic collapse.

The author has been involved as …

Cal Viva: Assessing The Seismic Vulnerablility Of California's State-Owned Buildings, James Guthrie, Jill Nelson

Architectural Engineering

In the last 20 years, agencies and departments in the State of California have initiated seismic vulnerability programs for state-owned buildings with goals ranging from life safety to reduced post-earthquake disruption. Until now, there has not been an assessment of all state-owned buildings with the goal of identifying and assessing the seismic vulnerability of those buildings needed for response and recovery efforts after an earthquake.

The California Vital Infrastructure Vulnerability Assessment Project (Cal VIVA), sponsored by the California Emergency Management Agency (Cal EMA) and funded through FEMA, has developed a statewide approach to assessing the vulnerability of the state-owned building …

Instruction Manual: Photogrammetry As A Non-Contact Measurement System In Large Scale Structural Testing, Anahid A. Behrouzi, Rhu Li

Architectural Engineering

Photogrammetry is a non-contact measurement method that is being used in large scale structural experimentation to extract information about the overall geometry of the specimen as well as the XYZ motion of select points on the structure during testing. This is possible through the use of high-resolution still cameras that capture several photographs of the specimen and are processed using photogrammetric software. The following document will focus specifically on the application of PhotoModeler® as the image post-processing tool. This instruction manual aims to provide guidance to researchers who would like to adopt photogrammetric techniques to acquire experimental test data, especially …

Ten Years Of Abet Ec 2000: One Person's Reflections, Allen Estes

Architectural Engineering

ABET accreditation criteria changed substantially at the turn of the century changing from a prescriptive, curricular-based standard to an outcomes-based approach for accreditation. The new system named Engineering Criteria (EC) 2000 required engineering programs to consult with their constituencies to establish program objectives and outcomes that define what their graduates will attain several years after graduation and at the time of graduation, respectively. The accreditation process involves assessing the degree to which graduates are attaining these outcomes and objectives and using the results to make changes and continuously improve the program. Most engineering programs have now been through two cycles …

College And Industry Partnerships: The Samé, Tanzania Polytechnic And Weld Quality, Craig Baltimore, Allen C. Estes

Architectural Engineering

No abstract provided.

Civil Engineering Program Evaluator Reflections: The Most Recent Lessons Learned, Karl F. Meyer, Allen Estes, Paul Francis Mlakar

Architectural Engineering

For the 2011-2012 ABET accreditation cycle, a number of changes across the criteria have impacted the way in which programs must approach their accreditation efforts.1 The most significant change is related to the reporting of assessment activities and their use for program improvement. For the first time this year, assessment results of program educational objectives and student outcomes are reported in Criterion 4, Continuous Improvement. Additionally, there have been changes to the former Criterion 9, Program Criteria. The Program Criteria is no longer numbered, but more importantly, contains some fairly significant changes impacting the assessment of student performance. The changes …

Interdisciplinary Capstone Design: Architects, Structural Engineers, And Construction Managers, James Guthrie, Allen Estes, Jill Nelson, Brent Nuttall

Architectural Engineering

The College of Architecture and Environmental Design at California Polytechnic State University in San Luis Obispo is the only college in the nation that has departments of Architecture, Architectural Engineering, Construction Management and Landscape Architecture in the same college. The institution has a 60 year tradition of collaboration between the engineering, architecture and construction disciplines, particularly at the lower division level. To enhance this collaboration, the college committed to providing an upper division, interdisciplinary experience to every student in the form of a project based, team oriented five unit studio laboratory that every student would take. The course is now …

Revisions To Tilt-Up Concrete Building Design: The Backstory Behind Changes Encompassed In 2009 International Building Code, John W. Lawson

Architectural Engineering

The 2009 International Building Code (IBC) has in its scope some significant revisions that greatly affect the design of tilt-up concrete buildings, but to the lay engineer it appears that some of these provisions are a step backwards. With the IBC’s referencing standards including ACI 318-08 (concrete) and the 2008 NDS SDPWS (timber), these documents have significant changes that become effective with the adoption of the IBC. We as engineers expect building codes to advance the state of the art with each successive edition. The 2009 International Building Code (IBC) and the Building Code Requirements for Structural Concrete (ACI 318-08) …

Finite-Element Limit Analysis Of The Tucker High School Gymnasium Roof Failure, Peter T. Laursen, Edmond P. Saliklis

Architectural Engineering

The Randolph Tucker High School gymnasium roof failure of 1970 has received much scholarly attention. This study will provide a conclusion to a large body of previously published works by means of limit state analysis of the roof failure using state of the art parametric finite-element modeling. Parametric modeling within a general purpose finite-element analysis program allows for extremely rapid changes to the model because key terms are objects or parameters that can be adjusted internally by the program, rather than laboriously entered by the user. The failure of the roof was investigated by means of a limit state analysis, …

Spectral Amplification Of Seismic Motion Travelling Through Natural Sand Deposits, Pradipta Chakrabortty, Radu Popescu

Architectural Engineering

Guidelines for seismic spectral amplification are provided in current building codes based on soil strength/stiffness by means of seismic site class. However, current codes do not make a difference between fully saturated and unsaturated soil deposits and do not account for effects of soil heterogeneity on seismic amplification. This study investigates the effect of natural small scale soil heterogeneity and degree of saturation on spectral amplification by means of transient nonlinear finite element analyses. Only cohesionless soil (sand) is considered in this study. The effects of presence of a structure are also studied for soils with two different relative densities. …

Seismic Design Of Timber Panelized Roof Structures, John W. Lawson

Architectural Engineering

No abstract provided.

Wind Design Of Timber Panelized Roof Structures, Brian Vandenburgh, John W. Lawson

Architectural Engineering

No abstract provided.