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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: JCI Activity on ISO Standard for Seismic Evaluation of Concrete Structures
Author(s): Masaomi Teshigawara
Publication: Special Publication
Appears on pages(s): 1-12
Keywords: seismic retrofit; seismic assessment; ISO; The seismic index of “Is”
Abstract:In the U.S., the specified yield strength of primary reinforcement of special concrete moment
frames and special concrete shear walls may not exceed 60 ksi. As part of the Applied Technology
Council ATC-98 Project, the use of high-strength reinforcement as primary reinforcement for seismicforce-
resisting systems (SFRS) was studied. The purpose of the project was to examine the feasibility of
using reinforcement with a specified yield strength greater than 60 ksi and, if feasible, to recommend
changes in design requirements and reinforcing steel specifications. The use of ASTM A706 Grade 80 was specifically examined, and it was determined that Grade 80 reinforcement could be used with little change to ACI 318. It was also found that additional research is needed before complete recommendations for use of Grades 100 and 120 reinforcement can be made.
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