Analysis, Design & Performance

Full Session without Abstracts

340419 - Where did those code provisions come from and why should I care?

Friday, April 20
9:30 AM - 10:30 AM
Location: 201A

This panel session will have three world-renowned engineers providing entertaining and educational TED-style talks on the history of how certain code provisions have changed in past decades and how such code development affects both practitioners and researchers. The panel speakers have been selected based on their expertise in various structural engineering specialties such as steel design, concrete design, seismic design, and more. Some of the speakers are NAE members with specific connections to Texas, making them particularly appropriate for the Congress locale in Ft. Worth. The target audience for this session includes researchers (those hoping their research outcomes will be implemented in the code); designers (those having to deal with the implications of ever-changing code provisions), and educators (those who wish to teach with a contextual perspective). From this session, the audience will learn: (1) the research over the past 50-100 years that has prompted major code changes in terms of steel column design, reinforced concrete bond and joint provisions, and seismic design provisions; (2) how research is implemented into the code (i.e., not just to keep practitioners on their toes with ever-changing provisions and code reorganizations); and (3) how or if past changes to the code should affect the approach structural engineers take in future designs or retrofit of existing structures.

Jim Jirsa, professor emeritus from UT, will talk about the interaction between research and code and its impacts on concrete specifications. In particular, he will discuss how ACI went from no provisions on beam-column connections to entire chapters focused on the topic, and how bond provisions in the past 50 years have changed as a result of a worldwide research effort and “harmonization” of code provisions. Santiago Pujol, professor at Purdue University, will discuss how the seismic provisions have changed over the past century based on research and lessons learned from real earthquakes, and what this means for structural engineers as we move forward. Finally, Randall Poston, senior principal at PIVOT Engineers in Austin, TX, will discuss lessons learned from the reorganization of the 2014 ACI structural code, a reorganization that was 45 years in the making.

This session is sponsored by the ASCE-SEI Structural Members Committee.

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James Jirsa

Professor Emeritus
University of Texas at Austin

James O. Jirsa has been on the faculty at the University of Texas at Austin from 1972 until his recent retirement in 2016. Prior to his move to Austin, Jirsa taught at Rice University and the University of Nebraska, where he received his BS degree in Civil Engineering. He has graduate degrees from the University of Illinois at Urbana-Champaign. Dr. Jirsa's teaching and research specialization areas are design, behavior, and durability of reinforced concrete structures; earthquake engineering; and repair and strengthening of structures. He is a registered professional engineer and became a member of the National Academy of Engineering in 1988 based on his significant contributions to research on behavior and design of structural reinforced concrete.


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Santiago Pujol

Purdue University

Santiago Pujol is a Professor of Civil Engineering at Purdue University’s Lyles School of Civil Engineering. A Fellow of the American Concrete Institute (ACI), Santiago is a member of ACI Committees 133, 314, 318R, and 445. He has received the Walter L. Huber Civil Engineering Research Prize from the American Society of Civil Engineers and the Chester Paul Siess Award for Excellence in Structural Research from ACI. Santiago has conducted quantitative earthquake reconnaissance work in Turkey, Colombia, Mexico, Peru, Chile, Japan, China, Haiti, Nepal, and Taiwan.


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Randall W. Poston

Sr. Principal
Pivot Engineers

An internationally recognized expert in structural engineering and inductee to the National Academy of Engineering (NAE), Dr. Poston has established himself as one of the preeminent structural consultants in the United States. Dr. Poston has authored and delivered hundreds of papers and presentations related to the structural engineering industry and championed the repair of existing structures for upwards of 30 years. He readily relates that he has never met a structure that cannot be repaired and has dedicated his career to advancing the state of structural engineering knowledge.


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340419 - Where did those code provisions come from and why should I care?

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