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Minimum punching reinforcement Asw, min

Figure 01 - Minimum punching reinforcement Asw, min
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FAQ 002970 EN

18 April 2019

Paul Kieloch Add-on Modules RFEM RF-PUNCH Pro Concrete Structures Structural Analysis & Design Eurocode 2

How is the minimum shear reinforcement determined in RF-PUNCH Pro in accordance with DIN EN 1992-1-1?

Answer

The minimum shear reinforcement A sw, min is determined in RF-PUNCH Pro by means of Equation 9.11DE from DIN EN 1992-1-1, 9.4.3.

The input values used for determining A sw, min are shown in result table "2.2 Required Punching Shear Reinforcement" in the section "Minimum NB" so that the calculated value can be retraced.

Please note that the calculated value A sw, min according to the standard refers to the "cross-section of a stirrup arm (or equivalent)". In RF-PUNCH Pro, this value is then multiplied by the tangential number of the individual stirrup rows, which means that the absolute value of the minimum reinforcement [cm²] in the individual perimeters can increase outwards with increasing round perimeter length or increasing number of stirrup legs.


Keywords

Reinforcement Minimum shear reinforcement Shear Reinforcement As-min Asw Asw-min Punching through

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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

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