Civil Engineering Association

ACI 224.2R-92 Cracking of Concrete Members in Direct Tension

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Cracking of Concrete Members in Direct Tension
Reported by ACI Committee 224
Reapproved 1997

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ACI PRC-224.2-92: Cracking of Concrete Members in Direct Tension (Reapproved 2004)

This report is concerned with cracking in reinforced concrete caused primarily by direct tension rather than bending. Causes of direct tension cracking are reviewed, and equations for predicting crack spacing and crack width are presented. As cracking progresses with increasing load, axial stiffness decreases. Methods for estimating postcracking axial stiffness are discussed. The report concludes with a review of methods for controlling cracking caused by direct tension.

Keywords: cracking (fracturing); crack width and spacing; loads (forces); reinforced concrete; restraints; stiffness; strains; stresses; tensile stress; tension; volume change.

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