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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, dissemination, and adoption of its 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: Isteg Steel For Concrete Reinforcement
Author(s): D. B. Steinman
Publication: Journal Proceedings
Appears on pages(s): 183-194
Abstract:Isteg steel reinforcement consists of two plain round bars twisted together cold with the length held constant. This cold-working operation raises the yield strength over 54 percent. Beams designed with lsteg steel at 50 percent higher stress and with a I5 percent increase in concrete stress have a higher factor of safety than beams designed with plain or deformed bars with the usually specified stresses. lsteg bars have over 23 percent higher bond strength than plain or deformed bars after reducing the lsteg bars by 33 percent in section for the recommended higher unit stress.
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