Detailing and Design Examples for Torsional Members

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by Mary H. Darr, P.E.,
Neal S. Anderson, P.E.,

Document Type: Proceeding Paper

Part of: Structures 2004: Building on the Past, Securing the Future

Abstract: The nature of the internal force flow in a concrete member subject to torsion brings about both longitudinal and transverse force components. The resulting tension brought about by the torsion can be at such magnitudes that concrete alone cannot be counted on or relied upon to sufficiently resist the tension. Hence, the role of steel reinforcement within the member cross-section becomes increasingly important to resist the torsional force flow. This reinforcement must be adequately proportioned and detailed to resist both the transverse and longitudinal components of the torsional force.

Subject Headings: Torsion | Concrete | Ultimate strength | Reinforcing steel | Cross sections | Flow resistance |

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