Email Address is required Invalid Email Address
In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Learn More
Become an ACI Member
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.
Staff Directory
ACI World Headquarters 38800 Country Club Dr. Farmington Hills, MI 48331-3439 USA Phone: 1.248.848.3800 Fax: 1.248.848.3701
ACI Middle East Regional Office Second Floor, Office #207 The Offices 2 Building, One Central Dubai World Trade Center Complex Dubai, UAE Phone: +971.4.516.3208 & 3209
ACI Resource Center Southern California Midwest Mid Atlantic
Feedback via Email Phone: 1.248.848.3800
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.
Showing 1-5 of 8 Abstracts search results
Document:
SP198-05
Date:
March 1, 2001
Author(s):
J. E. Breen
Publication:
Symposium Papers
Volume:
198
Abstract:
This Symposium honors a man who through a broad range of contributions, clearly carved a worldwide leadership position in the field of Structural Engineering. It is a fitting place to discuss the characteristics of leadership in the formulation of codes of practice and particularly building codes for structural concrete. In our North American democracies, the tradition of developing a clear consensus in support of a proposed change is the rule in formulating concrete design codes. Such a consensus means overwhelming agreement of a committee of strong-willed persons representing a myriad of conflicting interests after consideration and judgment of the merit of every dissenting opinion. In order to obtain such a consensus, code recommendations must not only be technically sound, but they must be practical, workable, and necessary. Above all, they must be patiently and painstakingly presented, defended, revised and re-presented to the committee. Those who shepherd the proposals that ultimately become part of the standards that guide practice and protect the citizenry must be effective leaders.
DOI:
10.14359/9991
SP198
Editors: Shuaib Ahmad, Roger Green, and S. Ali Mirza
Leadership, combined with innovation and integrity, are qualities inherent in James G. MacGregor’s personal and professional activities. These attributes led a group known as the “Friends of Jim” to prepare and hold a national symposium of the American Concrete Institute in Seattle to honor Jim MacGregor. The symposium offers papers on diagonal tension, reliability, columns, and engineering procedures. Note: The individual papers are also available as .pdf downloads.. Please click on the following link to view the papers available, or call 248.848.3800 to order. SP198
10.14359/14007
SP198-07
S. A. Mirza
The CSA Standard A23.3-94 permits a moment magnifier approach for design of slender composite steel-concrete columns. This approach is strongly influenced by the effective flexural stiffness (EI) of the columns. However, the EI expressions given in CSA A23.3-94 are quite approximate when compared with the values of EI derived from axial load-moment-curvature relationships. This study was undertaken to determine the influence of different variables on EI of slender tied rectangular composite columns in which steel sections are encased in concrete. The columns studied were subjected to uniaxial bending in symmetrical single curvature under short-term loads. Approximately, 8,000 simulated columns, half of which subjected to bending moment about the major axis and the remaining half subjected to bending moment about the minor axis of the steel section, were used to generate the stiffness data. The EI expressions were then developed for use in slender composite column designs. A design equation is proposed in this paper.
10.14359/9993
SP198-04
W. H. Dilger and P. Langohr
For long span continuous concrete bridges, haunched box girders are the preferred choice of the structural engineers because they not only look most graceful, but they are also more efficient structurally, and more economical. It is therefore not surprising that the designers of the 12.9 km (8 mile) long Confederation Bridge in Eastern Canada chose the haunched girder configuration for the 43 girders of the 250 m (820 ft) long marine spans as well as 21 girders of the approach spans. In the paper it is demonstrated that the conventional approach to shear design of haunched girders is on the unsafe side. This is so because the compression force, the vertical component of which reduces the shear force in the web, is smaller than the bending moment M, divided by the internal lever arm d,. The relevant equations are derived on the basis of equilibrium in a web with diagonal cracks, sloped at an angle 8. As an example the shear design for the Confederation Bridge is presented.
10.14359/9990
SP198-03
D. Mitchell
This paper describes some of the important aspects of code requirements for the design of structural members made with high-strength concrete. The provisions of the 1994 CSA Standard for the Design of Concrete Structures are highlighted. Comparisons are made between the provisions of the 1999 ACI Code and the 1994 CSA Standard. Some aspects of design from the 1990 CEB-FIP Model Code and the 1995 New Zealand Standard are also discussed.
10.14359/9989
Results Per Page 5 10 15 20 25 50 100