Education Webinar
Specifying FRP for Building Diaphragm and Shear Wall Strengthening: Aligning with Design Intent and Latest Research
May 1, 2025 | Thu 12:00 America/Chicago
Duration: 1.25 Hours
CE Credits: 1.25
$300
This presentation focuses on the evaluation and retrofit design practices for concrete diaphragms and shear walls in the U.S., using FRP as a seismic strengthening solution.
Although there are extensive component modeling load-deformation characteristics and acceptance criteria prescribed for various concrete components in U.S. standards like ASCE/SEI 41, such provisions for concrete diaphragms generally point to walls and other similar component idealizations. Consequently, practicing engineers must resort to alternative design methods for assessing retrofit design decisions wherein real building diaphragms rarely resemble the idealized wall counterpart. Furthermore, after evaluation shows that retrofit is required, similar extrapolations are required for FRP strengthening schemes, using the beam-analogy and debonding strains prescribed in ACI 440.2-R and other documents.
This presentation will highlight large-scale testing for diaphragm shear, chords and collectors, and provide design recommendations resulting from these test programs. Additionally, this presentation will aim to provide guidance to consulting engineers on effective ways to specify FRP for seismic applications to meet design intent.
- Course will award 1.25 hour of continuing education
- Diamond Review approved in all 50 states
- This webinar will be available as a recording.
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This presentation focuses on the evaluation and retrofit design practices for concrete diaphragms and shear walls in the U.S., using FRP as a seismic strengthening solution.
Although there are extensive component modeling load-deformation characteristics and acceptance criteria prescribed for various concrete components in U.S. standards like ASCE/SEI 41, such provisions for concrete diaphragms generally point to walls and other similar component idealizations. Consequently, practicing engineers must resort to alternative design methods for assessing retrofit design decisions wherein real building diaphragms rarely resemble the idealized wall counterpart. Furthermore, after evaluation shows that retrofit is required, similar extrapolations are required for FRP strengthening schemes, using the beam-analogy and debonding strains prescribed in ACI 440.2-R and other documents.
This presentation will highlight large-scale testing for diaphragm shear, chords and collectors, and provide design recommendations resulting from these test programs. Additionally, this presentation will aim to provide guidance to consulting engineers on effective ways to specify FRP for seismic applications to meet design intent.
- Course will award 1.25 hour of continuing education
- Diamond Review approved in all 50 states
- This webinar will be available as a recording.
Speakers:
Garrett Hagen, P.E., S.E., is a Principal at Degenkolb Engineers in Orange County, CA. He is a nationally recognized expert in seismic hazard mitigation. He brings his passion for contributing to state-of-practice standards and guidelines for earthquake resilience to a diverse range of building design and seismic strengthening schemes. Garrett is the Chair of ACI 374 for performance-based seismic design of concrete buildings, Chair of ACI Committee 369-D for updates to ASCE 41 wall provisions, Co-chair of SEAOSC Existing Building Committee and a Member of ACI Committees 318H and 440S.
Aniket Borwankar is a Senior Development Manager with Simpson Strong-Tie based in Pleasanton, California. He is an active member of several professional committees including the ACI Committee 440F (FRP Strengthening), ACI Code Committee 440S (FRP Strengthening) and ACI Code Committee 369S (Seismic Strengthening). Aniket has written more than 20 papers and articles on repair and strengthening of structures with FRP composites. He has a Masters Degree in Civil Engineering and has several years of consulting experience.
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