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Minimum punching reinforcement Asw, min

Figure 01 - Minimum punching reinforcement Asw, min

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18 April 2019

FAQ 002970 EN

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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RFEM Main Program
RFEM 5.xx

RFEM 5.xx

Main Program

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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RFEM Concrete Structures
RF-PUNCH Pro 5.xx

RF-PUNCH Pro 5.xx

Add-on Module

Punching shear design of foundations and slabs with nodal and line supports

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