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Webinar Recording: 2015 IBC Tilt-up Concrete Buildings w Flexible Roof Diaphragm

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This recorded webinar is based upon the design example “Tilt-up Concrete Buildings w Flexible Roof Diaphragms” in Volume 2 of the SEAOC 2015 IBC Structural/Seismic Design Manual series.

This webinar will begin with the background behind the current concrete slender wall code provisions frequently used for tilt-up concrete wall design, and will continue with the current wall anchorage provisions to the diaphragm, the proper use of sub-diaphragms and continuity ties. Additionally the discussion will be tailored to wood structural panel diaphragms most common along the seismically active Pacific coast. And finally, some of the unique aspects of shear walls in tilt-up concrete buildings will be addressed. Numerous photos and graphics will be integrated into the presentation to illustrate many of the issues.

Please note that continuing education credit is not available for recorded webinars. 


John Lawson, P.E., S.E.
Contributing Author, SEAOC 2015 IBC SSDM Vol. 2
Associate Professor in Architectural Engineering, Cal Poly San Luis Obispo

John Lawson is a licensed Structural Engineer and an Associate Professor in Architectural Engineering at Cal Poly, San Luis Obispo. He has over 25 years of experience as a practicing Structural Engineer; and has overseen the technical design of over 100 million square feet of tilt-up concrete construction. He has a BS in Architectural Engineering from Cal Poly, San Luis Obispo, and a MS in Structural Engineering from Stanford. Mr. Lawson is a member of ACI 551 (Tilt-up) and has been the author pf numerous papers regarding tilt-up buildings, as well as the tilt-up design examples in the Structural/Seismic Design Manual since the 1997 UBC version.

About the Webinar Series

This series of lunchtime webinars features an in-depth look at design examples from SEAOC’s newly published 2015 IBC Structural/Seismic Design Manual (SSDM) Volumes 1, 2 and 3. This will be your opportunity to hear directly from contributing authors of the example problems as they share their significant expertise and experience in the design area and underlying building code provisions of the new 2015 International Building Code (IBC). With built-in time for audience questions and answers at the end of each session, these unique sessions are sure to be useful to experienced and new engineers alike. All webinars will be held live in January and February 2017.

About the SEAOC 2015 IBC Structural/Seismic Design Manual (SSDM) 

The SEAOC Structural/Seismic Design Manual (SSDM), throughout its many editions, has served the purpose of illustrating good seismic design and the correct application of building-code provisions. The SSDM has bridged the gap between the treatment of topics in the building code and ASCE 7, the SEAOC Blue Book (Recommended Lateral Force Requirements and Commentary) and real-world decisions that designers face in their practice.

The SSDM uses example buildings to illustrate code-compliant designs engineered to achieve good performance under seismic loading. The examples address the full range of seismic design considerations, from conceptual level through details of connections and load path.  In some cases simply complying with building-code requirements does not ensure good seismic response; here the SSSDM makes recommendations for exceeding the minimum code requirements in such cases, with discussion of the reasons for doing so.
The newly released 2015 SEAOC SSDM has updated and revised the examples for consistency with the 2015 edition of the International Building Code. Volumes 1, 2, and, 3 (addressing light-frame, tilt-up, masonry, and reinforced concrete buildings) have had the most significant changes. Learn more and purchase your copies today >