Punching Command

The SFRC Punching (ULS) command can be selected in the tree menu of service Concrete > SFRC 2D members . The command is available, when EC - EN national code is selected in Project data and the linear or non-linear static analysis is done for the model containing 2D members from steel fibre reinforced concrete material. Once the command is selected, appropriate parameters are listed and can be adjusted in property window with following options:

Selection

Places, where the punching is calculated and results are available, can be defined automatically or manually. However, the final selection always contains just structural nodes, which fulfil the following criteria:

• node has the reference on a plate (=2D member) from steel fibre concrete material
• node has a reference on a columns below and /or above the plate (=1D member) or support in node
• node does not contain any reference on beams

To define the selection of the nodes, several options are available:

All	Prepares automatically the selection of all structural nodes in model, which fulfil above mentioned criteria
Current	Uses user selection of part of the model, where structural nodes are filtered to keep in selection just the proper nodes
Advanced	Same approach as Current, just additional options are available for user to enhance the actual selection by the previous one.
Named Selection	Same approach as Current, just an already saved selection of part of the model - made and named by user - is used.

Note: If manually defined selection contains structural nodes not applicable for punching, user is informed about that fact in the graphical window and preview. Also keep on mind, that the filtering of nodes also respects current Activity applied in model.

Result case

To define load, for which results are calculated and displayed, the following parameters can be used:

Type of load	Specifies what type of load is considered (if some option is marked with an asterisk, the FEM results for that option are not yet calculated).
Load case / Combination / Result Class / Nonlinear Com.	Offers list of all available result cases for the selected type of load.

Dosage and Reinforcement

To define longitudinal reinforcement, which is taken into account during the punching calculation, these parameters can be used:

Dosage	Defines which fibre dosage is considered in punching calculation, there are in fact three possibilities: Material defined - coming from setting per each material from Material library; Designed - it means Dosage deign is run at first and the results from it are taken into account for punching check and User defined which means the setting defined in command directly is taken into account fro all nodes in the model.
Type of reinforcement	Specifies what type of reinforcement is considered in the punching calculation:there is one option related to User reinforcement only.).
Averaging of peak	Controls whether the averaging of peak is applied or not during the Reinforcement design
Location	Provides information about the location of the Reinforcement design results (used In nodes avg.)
System	Provides information about the coordination system of Reinforcement design results (used LCS mesh element)

Note: If results of the Dosage design are not available for the selected Result case, Location and System, than the program automatically runs the procedure to make those results available for the Punching calculation.

Note: The 'User' type of reinforcement applied on 2D members as Reinforcement 2D is taken into account for Punching calculation only.

Extreme

To control display of results, the following parameters can be used:

Extreme	Specifies for what nodes results are displayed: Nodes - results are displayed for every calculated node regardless of position of extreme, Global - just the node with the extreme of a selected result value is displayed
Values	Specifies what result value is presented from the available list of Punching - Results

Output settings

In addition to previous settings related to the result values and extremes, it's possible to control specifically a numerical output as follows:

Output	Specifies what type of numerical output is displayed from following options: Brief (just summary info) and Standard (summary info supplemented by more detailed information)
Print explanation of symbols	Controls whether an explanation of symbols used in numerical output is present or not
Print combination key	Controls whether an combination key is presented or not (this option is available just when type of load is not a load-case and output is selected as Brief)

Errors, warnings and notes settings

System of errors, warnings and notes is fully supported for the Punching calculation to provide various type of information (for a complete list see Punching - Errors / Warnings / Notes). The E/W/N messages are displayed using both numerical and graphical output. The showing is controlled by following options:

Show information in Result header	Controls whether summary info about errors and warning is visible as a part of the Result header.
Show errors	Specifies what errors are presented in graphical and numerical output: All (all detected errors) and None (no errors)
Show warnings	Specifies what warnings are presented in graphical and numerical output: All (all detected warnings), In extremes only (just warnings detected on nodes with extreme) and None (no warnings)
Show notes	Specifies what notes are presented in graphical and numerical output: All (all detected notes), In extremes only (just notes detected on nodes with extreme) and None (no notes)
Show table with explanation	Controls whether an explanation of detected errors, warnings and notes is presented in the numerical output