What Do We Know about Torsion in Concrete Members?

by Paul Zia, (M.ASCE), Prof. and Assoc. Head; Dept. of Civ. Engrg., North Carolina State Univ., Raleigh, NC,

Serial Information: Journal of the Structural Division, 1970, Vol. 96, Issue 6, Pg. 1185-1199

Document Type: Journal Paper

Discussion: Rajagopalan K. S. (See full record)
Discussion: Pandit Ganpat S. (See full record)
Discussion: Losberg Anders (See full record)
Discussion: Behera Umakanta (See full record)
Closure: (See full record)


Recent research on torsion in concrete members is reviewed and summarized. Different versions of the skewed bending concept are compared and the effect of web reinforcement and prestress on the torsional strength are examined. The validity and limitations of the different torsion-bending and torsion-shear interaction curves as well as several interaction surfaces are reviewed. Several essential areas for additional research on torsion and its inaction with shear and moment are delineated.

Subject Headings: Torsion | Concrete | Prestressing | Curvature | Flexural strength | Skewness | Bending (structural) | Webs (structure)

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