Abstract: 

Note: SP-208 is Out of Print. However, the individual papers are available as .pdf downloads. Please click on the following link to view the papers available, or call 248-848-3800:

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Editor: Karl-Heinz Reineck

With the addition of the new Appendix A on strut-and-tie models in ACI 318-02, “Building Code Requirements for Structural Concrete,” engineers have an alternative code procedure for designing structural concrete members where the usual sectional design assumptions for flexure and shear do not apply.

ACI SP-208 contains selected papers presented at the 2002 ACI Fall Convention by members of ACI Subcommittee 445-A, Shear and Torsion: Strut-and-Tie Models. This publication shows engineers how to apply strut- and-tie modeling in accordance with Appendix A. The papers also trace the development of Appendix A of ACI 318-02 and summarize important tests that confirm strut-and-tie modeling as a rational basis for the design of structural concrete.

Most of the examples have been taken from practice. In addition to explaining the approach of determining a model, they point out where problems can occur in dimensioning or in detailing and anchoring of the reinforcement and how the design can be improved.

Contents: PREFACE

Part 1: Introduction..pg 1

Part 2: Derivation of strut and tie models for the 2002 ACI Code..pg 7

Part 3: Experimental verification of strut and tie models..pg 41

Part 4: Examples..pg 63

Example 1a: Deep beam design in accordance with ACI 318-2002..pg 65

Example 1b: Alternative design for the non slender beam (deep beam)..pg 81

Example 2: Dapped end T-beam supported by an inverted T-beam..pg 91

Example 3.1: Corbel at column..pg 105

Example 3.2: Double corbel..pg 117

Example 4: Deep beam with opening..pg 129

Example 5: Beam with indirect support and loading..pg 145

Example 6: Prestressed beam..pg 163

Example 7: Strut and tie model cable stayed bridge pier table..pg 185

Example 8: High wall with two openings..pg 195

Example 9: Pile Cap..pg 213

Part 5: Modeling structural concrete with strut and tie models summarizing discussion of the examples as per Appendix A of ACI 318-2002..pg 225