Title: Background and Practical Application of Tentative Design Criteria for Torsion*

Author(s): Thomas T. C. Hsu and E. L. Kemp

Publication: Journal Proceedings

Volume: 66

Issue: 1

Appears on pages(s): 12-23

Keywords: beams (structural) ; bending; building codes; design criteria; plain concrete; pre-stressed concrete; reinforced concrete; shear; structural design; torsion; ultimate strength method (structural).

DOI: 10.14359/7338

Date: 1/1/1969

Abstract:
Design criteria for torsion in reinforced concrete members have been developed by ACI Committee 438, Torsion. These provisions are being considered for incorporation into the 1970 ACI Building Code. This paper gives the background of the torsion criteria. It reviews the basic strength equations for plain, reinforced, and restressed concrete subjected to pure torsion. The interaction of torsion with shear and bending is also discussed. The application of the torsion design provisions are illustrated by an example problem.