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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: Cost of Reinforced Concrete High-Rise Columns
Author(s): Muthia Kasi
Publication: Special Publication
Appears on pages(s): 219-238
Keywords: columns (supports); computer programs; costs; structural design; formwork (construction); high-rise buildings; reinforced concrete; reinforcing steels; General
Abstract:In the last systematic review of reinforced concrete column costs in 1973, ACI Committee 439 limited its cost comparisons to concrete strengths from 4000 to 8000 psi and reinforcing steels with design yield of 60,000 psi with speculative estimates of steel with 80,000 psi yield. Design then was based upon the 1971 ACI Building Code. At that time the leading structural engineers had successfully utilized concrete with f'c = 9000 psi under the current code. A number of general conclusions on costs were presented as trends. To bring this review of reinforced concrete column costs up to date, we must consider changes in code requirements, more general availability of still higher strength concretes, superplasticizer admixtures, building code limitations and general lack of economy in a Grade 80 reinforcement, and later laboratory testing and field research on properties and performance of high-strength concretes. A recent detailed comparative cost study of reinforced concrete columns which resulted in appreciable cost savings in a Chicago high-rise building, reinforces some of the 1973 report under conditions today. As might be expected in dealing with the numerous variables involved in comparative column design costs, the detailed study was made effective only through a computer program. The essential features of this program are described in detail in the CRSI Bulletin.
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