Baltimore , Maryland
June 25, 2023
June 25, 2023
June 28, 2023
Civil Engineering Division (CIVIL)
Among structural engineering education research, there is a limited number of studies which implement physical or three-dimensional digital models to support instruction in an introductory timber design course. As the curriculum transitions from the design of isolated members to an entire structure, it is critical to provide interactive learning tools to assist students in gaining proficiency in visualizing material behavior, vertical and lateral load paths, and construction sequence. Timber design courses within the Architectural Engineering department at [redacted], being on the West Coast of the United States, place an emphasis on seismic and wind design. Therefore, the proposed learning tools are intended to pair with an introduction to the American Wood Council’s National Design Specifications (NDS) and Special Design Provisions for Wind and Seismic (SDPWS).
Two graduate students at this predominantly undergraduate university developed physical and digital models to strengthen student's conceptual understanding of mechanical connections, gravity and lateral load flow, and directional properties of wood. These included: - Kit consisting of manufactured lumber (I-joists and laminated-veneer lumber) and hardware samples (shear wall hold-down and joist hanger) sourced from various suppliers to expose students to commercial products available for timber design, - Laterally braced column model that examines the effects of column section dimensions relative to the unbraced length on buckling load, - Diaphragm model that demonstrates the variations of sheathing layouts, per SDPWS Section 4.2.8, and allows students to investigate the appropriate application of layouts under various loading conditions, - Digital library of three-dimensional (3-D) components for students to rapidly assemble gravity and lateral systems they have designed to be able to investigate their load flow and constructability in both 2-D and 3-D views.
This paper provides details on physical and digital model fabrication along with an instructor guide for incorporating the learning tools into the curriculum. This paper also describes other new course material including a homework packet based on a two-story residential project completed by the instructor co-authors firm as well as a handout that guides students through the analysis of members under bi-axial loading. Results from class surveys are also presented to demonstrate the effectiveness of these models and other updated teaching materials on the intended educational outcomes including improving student knowledge of material properties, behavior of structural members, load flow and connections, along with context in real-world structural engineering projects.
Robles, P., & Favro, G. R., & Behrouzi, A., & Lentz, A. (2023, June), Physical and Digital Models for Timber Design and Analysis Courses Paper presented at 2023 ASEE Annual Conference & Exposition, Baltimore , Maryland. https://peer.asee.org/43886
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