Punching of Reinforced Concrete Flat Slabs – ACI and German Guidelines

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Title: Punching of Reinforced Concrete Flat Slabs – ACI and German Guidelines

Author(s): J. Hegger, A. Sherif, and R. Beutel

Publication: Special Publication

Volume: 232

Issue:

Appears on pages(s): 209-228

Keywords: codes; footings; headed bars; moment transfer; punchingshear strength; shear reinforcement; slabs; stirrups

Date: 10/1/2005

Abstract:
The new DIN 1045-1 and the German Construction Approval Z-15.1-213 fordouble-headed studs are discussed and essential background information ispresented. In addition, comparison is made with the ACI 318-02 Code and the ACI 421report. Differences between the codes are reviewed and highlighted. Emphasis is seton the parameters affecting the punching resistance of slab-column connections, themoment transfer between slab and column, shear reinforcement (stirrups and headedbars), and punching of reinforced concrete footings. The code provisions are evaluatedby comparing with test results.