RF-PUNCH Pro Add-on Module for RFEM
Punching Shear Design of Foundations and Slabs with Nodal and Line Supports
The RF-PUNCH Pro add‑on module performs the design of punching shear resistance for singularly or linearly supported surfaces. The module automatically determines the governing punching load from the specified load. Also, it is possible to apply a concentrated punching load to a slab manually.
With RF‑PUNCH Pro, you can quickly and efficiently perform punching shear design according to the following standard:
- EN 1992‑1‑1:2004 + A1:2014 (EC2 for RFEM required)
- Import of relevant information and results from RFEM
- Integrated editable material and cross-section library
- The module extension EC2 for RFEM allows for design of reinforced concrete members according to EN 1992‑1‑1:2004 (Eurocode 2) and the following National Annexes:
- NA to BS EN 1992-1-1:2004/NA:2005 (United Kingdom)
- ÖNORM B 1992-1-1:2018-01 (Austria)
- TKP EN 1992-1-1:2009 (Belarus)
- NBN EN 1992-1-1 ANB:2010 (Belgium)
- BDS EN 1992-1-1:2005/NA:2011 (Bulgaria)
- NA to CYS EN 1992-1-1:2004/NA:2009 (Cyprus)
- CSN EN 1992-1-1/NA:2016-05 (Czech Republic)
- EN 1992-1-1 DK NA:2013 (Denmark)
- SFS EN 1992-1-1/NA:2007-10 (Finland)
- NF EN 1992-1-1/NA:2007-03 (France)
- DIN EN 1992-1-1/NA/A1:2015-12 (Germany)
- UNI EN 1992-1-1/NA:2007-07 (Italy)
- LVS EN 1992-1-1:2005/NA:2014 (Latvia)
- LST EN 1992-1-1:2005/NA:2011 (Lithuania)
- MS EN 1992-1-1:2010 (Malaysia)
- NEN-EN 1992-1-1+C2:2011/NB:2016 (Netherlands)
- NS EN 1992-1-1:2004-NA:2008 (Norway)
- PN EN 1992-1-1/NA:2010 (Poland)
- NP EN 1992-1-1/NA:2010-02 (Portugal)
- SR EN 1992-1-1:2004/NA:2008 (Romania)
- SingaporeS EN 1992-1-1/NA:2008-06 (Singapore)
- STN EN 1992-1-1/NA:2008-06 (Slovakia)
- SIST EN 1992-1-1:2005/A101:2006 (Slovenia)
- UNE EN 1992-1-1/NA:2013 (Spain)
- SvenskS EN 1992-1-1/NA:2008 (Sweden)
In addition to the National Annexes (NA) listed above, you can also define a specific NA, applying user‑defined limit values and parameters.
- Complete and reasonable presetting of input parameters
- Punching shear design on columns, wall ends, and wall corners
- Optional arrangement of an enlarged column head
- Automatic recognition of punching node area from the RFEM model
- Detection of curves or splines as boundary of the control perimeter
- Automatic consideration of all slab openings defined on the RFEM model
- Structure and graphical display of the control perimeter before calculation starts
- Qualitative determination of punching shear reinforcement
- Optional design with unsmoothed shear stress along the control perimeter that corresponds with the actual shear distribution on the FE model
- Determination of the load increment factor β by full plastic shear distribution as constant factors according to EN 1992‑1‑1, Chap. 6.4.3 (3), based on EN 1992‑1‑1, Fig. 6.21N or by user‑defined specification
- Integration of design software by the shear rails producer (Halfen)
- Numerical and graphical display of results (3D, 2D, and in sections)
- Punching shear design with or without punching shear reinforcement
- Optional consideration of minimum moments according to EN 1992‑1‑1 when determining longitudinal reinforcement
- Design or dimensioning of longitudinal reinforcement
- Complete integration of results in the RFEM printout report
After opening the module, the materials and surface thicknesses defined in RFEM are preset. The designed nodes are recognized automatically. However, you can modify them manually.
It is possible to consider openings of the relevant area at risk of punching shear. The openings can be transferred from RFEM or specified in RF‑PUNCH Pro so there is no effect on the stiffnesses of the RFEM model.
Parameters of the longitudinal reinforcement cover the number and direction of layers as well as the concrete cover separately defined by surface for the top and the bottom side of a slab. The next input window allows you to define all additional details for nodes of punching shear. In addition, it is possible to set punching load, load increment factor β, and the existing longitudinal reinforcement.
To facilitate orientation, a slab is always displayed with the corresponding node of punching shear. Furthermore, you can open the design program by HALFEN, the German producer of shear rails. All RFEM data can be transferred into this program for easy and effective further processing.
RF-PUNCH Pro determines the punching load on the basis of a single load (from column / loading / nodal support) and of the smoothed and unsmoothed shear force distribution along the control perimeter. However, it is also possible to enter user‑defined specifications.
Since the module is fully integrated in RFEM, all nodes of punching shear on a reference surface are known. Therefore, you can perform the interference check of determined perimeters with the perimeters of adjacent columns.
After the calculation, the module displays clearly arranged tables including all result details to ensure traceability at any time. The designed and allowable shear stresses for the shear resistance design of a slab as well as various perimeters and reinforcement ratios are represented in detail. If necessary, there is a clarifying note displayed.
The next result window lists the required longitudinal or punching shear reinforcement of each analyzed node and shows a clear graphic. All design results can be clearly displayed with values in the work window. Furthermore, you can add all result tables and graphics into the global printout report of RFEM, which guarantees a coherent documentation.
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