Filigran Trägersysteme

Joints optimized between precast concrete elements in areas of punching shear

Flat slabs are economically manufactured with precast slabs and topped with in-situ concrete. Accurate execution requires detailed planning. In areas of punching shear, the arrangement of the precast slabs and all possible joints between the precast slabs and the column face must be carefully planned. The distance between the precast slab and the column face for the Filigran punching shear reinforcement, based on European approval ETA-13/0521, may not exceed 4 cm. However, the slabs may also be moved all the way up to the column, or may overlap the column by up to 1 cm. In contrast, butt...

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Issue 02/2021

Punching shear reinforcement in crosswise arrangement – Effective or impermissible?

Stud rails used as punching shear reinforcement in flat slabs are arranged radially in Germany. A crosswise arrangement in the layout of the reinforcement elements, as it is common practice in North...

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Issue 02/2014 New design tools for practice

Punching shear –

While DIN EN 1992-1-1 and the national annex of Germany treat punching shear design for in-situ concrete slabs and centrically loaded footings in great detail [1, 2], joints between semi precast...

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Issue 10/2018 FILIGRAN TRÄGERSYSTEME

Filigran punching shear reinforcement newly assessed

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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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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Issue 11/2021 Monday, 15th November → Innovation workshop (6)

New European Assesment for punching shear reinforcement

Flat slabs made of reinforced concrete are supported directly on columns. The total height of the slab construction is reduced and the formwork effort is simplified because beams are done away with....

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