New experimental results on punching shear behavior of flat slabs with varying amount of punching shear reinforcement

Reduction of punching shear reinforcement

With introduction of Eurocode 2 in Germany, the punching shear design provisions for flat slabs were revised. In consequence of limited anchorage conditions of punching shear reinforcement elements in flat slabs depending on the effective depth, only a reduced steel strength may be used in the calculation of the steel contribution. Due to the lack of systematic tests and safety related concerns, the amount of punching shear reinforcement in flat slabs within the 1st and 2nd row was significantly increased in German Annex of Eurocode 2 (EC2NA) compared to the general Eurocode 2. The results of...

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Issue 02/2018 Punching shear behavior of footings with a varying amount of punching shear reinforcement

Experimental investigations

The punching shear design provisions for footings and ground slabs were revised with the introduction of Eurocode 2 in Germany. In contrast to previous German codes, the location of the control...

Issue 02/2017 Questions and answers

Punching shear design in practice

With introduction of Eurocode 2 in Germany (DIN EN 1992-1-1/NA [1] [2]) in 2012, the punching shear design provisions for flat slabs and column bases were revised compared to DIN 1045-1 [3]....

Issue 02/2017 Flat slabs and foundations

New punching shear reinforcement systems

The structural design of flat slab systems is usually governed by the punching shear resistance of the slab. To achieve a sufficient punching shear resistance at reasonable slab thickness, shear...


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The FDB Filigran punching shear reinforcement consists of spatial welded reinforcement elements with optimized geometry. The punching shear resistance of flat slabs is more than doubled by using FDB,...


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Due to the less slender design of foundations compared to flat floors and the soil contact stress acting on the former, footings exhibit a load transfer pattern that enables greater punching shear...