Punching of Reinforced Concrete Flat Slabs - ACI and German Guidelines

摘要

The new DIN 1045-1 and the German Construction Approval Z-15.1-213 for double-headed studs are discussed and essential background information is presented. In addition, comparison is made with the ACI 318-02 Code and the ACI 421 report. Differences between the codes are reviewed and highlighted. Emphasis is set on the parameters affectingthe punching resistance of slab-column connections, the moment transfer between slab and column, shear reinforcement (stirrups and headed bars), and punching of reinforced concrete footings. The code provisions are evaluated by comparing with test results.