Function
PT performs a two-way shear (Punching Shear) check of the slab and outputs the check results.
After selecting output options in the dialog, click the Apply button at the lower right to view the results.
By default, the Punching Shear check ratio and critical section are output.
Call
From the Main Menu
select [Post Tension] tab > [Analysis] group > [Perform Design] > [PT Slab Punching Check]
Input
Load Combination
Specify the load combination for the punching shear check.
ALL COMBINATION: Performs checks for all defined load combinations and outputs the most unfavorable result.
Individual load combination: Performs the check for the selected load combination and outputs the result.
Press the [...] button on the right to view the load combinations subject to review.
Punching Shear Check
Select when performing a directional shear check.
Press the [...] button on the right to select and output the stress distribution at the critical section as In-plane or Normal (3D).
Select shear-check method
CODE: Performs shear check using the critical section and shear calculation formula defined in the design code.
FEM: Performs the shear check using the shear stress from analysis results.
Avg. by Element: Check using the average member force per element
Avg. by Side: Check using the average member force per side
Type of Display
Define the type of display as follows:
Contour
Display the displacement of the model in contour.
The ...Button
Ranges: Define the contour ranges.
The Customize Range... Button : Assign the color distribution range of contour. Using the function, specific colors for specific ranges can be assigned.
Note
Contour Range Max/Min values can be larger than the max/min output values. If the Contour Range values exceed the output values, they are entered at Rank 0 and Rank 11.
Number of Colors : Assign the number of colors to be included in the contour (select among 6, 12, 18, 24 colors)
Colors: Assign or control the colors of the displacement contour.
Colour Table: Assign the type of Colors.
The Customize Color Table Button: Control the colors by zones in the contour.
Reverse Contour: Check on to reverse the sequence of color variation in the contour.
Contour Line: Assign the boundary line color of the contour
Element Edge: Assign the color of element edges while displaying the contour
Contour Options: Specify options for contour representation
Contour Fill
Gradient Fill: Display color gradient (shading) in the contour.
Draw Contour Lines: Display color boundaries in the contour.
Draw Contour Line Only: Display only the colored boundaries of the contour.
Mono line: Display the boundaries of the contour in a mono color.
Contour Annotation: Legend or annotation signifying the ranges of the contour is displayed.
Spacing: Display the spacing for the legnd or annotation.
Coarse Contour (faster) (for large plate or solid model): Represent a simplified contour for a large model using plate or solid elements in order to reduce the time required to represent a complete contour.
Extrude: Where plate elements or solid elements along a cutting plane are represented in contour, a three dimensional contour is created. The positive direction of the analysis results is oriented in the z-axis direction of the local element coordinate system.
The option is not concurrently applicable with the Deformed Shape option. Similarly, the option cannot be concurrently applied to the cases where the Hidden option is used to display plate element thicknesses or the Both option is used to represent Top & Bottom member forces (stresses).
Legend
Display various references related to analysis results to the right or left of the working window.
The ... Button
Legend Position: Position of the legend in the display window
Rank Value Type: Specify a type of values in the Legend and the number of decimal points.
Values
Display the nodal displacements in numerical values.
The font and color of the numbers can be controlled in Display Option.
The ... Button
Decimal Points: Assign decimal points for the displayed numbers
Exp.: Express as exponential
Min & Max: Display the maximum and minimum values
Abs Max: Display the absolute maximum value
Max: Display only the maximum value
Min: Display only the minimum value
Limit Scale (%): Set the screen display limit for nodal displacements relative to the selected maximum or minimum value
Set Orientation: Display orientation of numerical values
Note
The default Decimal Points can be controlled in "Preferences".
Set Orientation = 0 to display numerical values to the right of nodes or elements.
The orientation angle represents the counter-clockwise direction, which may be used to enhance the readability of the numbers.
Design result
PT Slab outputs the two-way shear check results as a detailed calculation report.
Apply: Execute the punching shear check using the specified settings and display the punching shear design results.
Close: Close the dialog without performing the punching shear check.