Magnel Diagrams for Prestressed Concrete Beams
Publication: Journal of Structural Engineering
Volume 109, Issue 12
Abstract
Magnel's graphical method for the analysis of a prestressed concrete beam is very useful for the determination of safe prestressing force and eccentricity. The paper presents the characteristics of the original Magnel diagram, reviews the writers' modifications to and extensions of the method, discusses relevant work by others, and offers a further simplification for the plotting of the safe zone, illustrated by a worked example.
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References
1.
“Building Code Requirements for Reinforced Concrete,” ACI 318‐77, American Concrete Institute, Detroit, Mich., 1977.
2.
Khachaturian, N., and Gurfinkel, G., Prestressed Concrete, McGraw‐Hill Book Co., New York, N.Y., 1969.
3.
Krishnamurthy, N., “Modified Graphical Method for the Determination of Prestressing Force and Eccentricity of Tendon in Prestressed Concrete Beams,” Journal of the Institution of Engineers, Vol. 48, No. 1, (Part CI‐1), India, Sept., 1967, pp. 295–306.
4.
Krishnamurthy, N., “Modified Magnel Diagram as Design Aid for Prestressed Concrete Bridge Members,” Proceedings of the Second International Symposium on Concrete Bridge Design, American Concrete Institute, ACI Publication SP‐26, Detroit, Mich., 1971, pp. 663–689.
5.
Magnel, G., Prestressed Concrete, Concrete Publications Ltd., London, U.K., 1948, also, McGraw‐Hill Book Co., New York, N.Y., 1954.
6.
Naaman, A. E., Prestressed Concrete Analysis and Design, McGraw‐Hill Book Co., New York, N.Y., 1982.
7.
Somayaji, S., “Prestressed Concrete Flexural Member: Design,” Journal of the Structural Division, ASCE, Vol. 108, No. ST8, Proc. Paper No. 17280, Aug., 1982, pp. 1781–1796.
Information & Authors
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Published In
Journal of Structural Engineering
Volume 109 • Issue 12 • December 1983
Pages: 2761 - 2769
Copyright
Copyright © 1983 ASCE.
History
Published online: Dec 1, 1983
Published in print: Dec 1983
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