Function
- Check the flexural design results for slab elements in contour. Also check the resulting bending moments and the design results of reinforcement along the specified Cutting Lines.
Note
In order to use this function, Eurocode2:05 or ACI318-11,08,05 must be selected in Design > Concrete Design Parameter > Design Code.
Call
From the Main Menu select [Design] tab > [Type : Meshed Design] > [Perform/Result] group > [Slab Design] > [Slab Flexural Design]
Input
Load Cases/ Combinations
Select a desired load case or load combination. Click the ... Button to the right to enter new or modify existing load combinations. (Refer to "Static Load Cases / Combinations")
Flexural Design
Select to check the flexural design results for a slab.
Element : Display the automatic design results using the internal forces calculated at each node of the element.
Avg. Nodal : Display the automatic design results using the average internal nodal forces of the contiguous elements sharing common nodes.
Element : Depending on the selected option above (Element or Avg.Nodal), produce the automatic design results for moments at each node of the elements that define the slab.
Width : Depending on the selected option above (Element or Avg.Nodal), produce the automatic design results using the average of the moments in the slab elements that contain the selected node.
Top : Design top bars for negative moments.
Bottom : Design bottom bars for positive moments.
Both : Produce the larger of the Top and Bottom bars.
Dir. 1 : Display the slab design results for the reinforcing steel entered in Dir. 1.
Dir. 2 : Display the slab design results for the reinforcing steel entered in Dir. 2.
One-Way Flexural Design
Display the bending moments of the floor slab elements along a cutting line, and produce the design results of reinforcement.
Defined Shear Check Lines : List of defined cutting lines
The Add Button : Add the information contained in the Cutting Line Detail to the list of Defined Cutting Lines
The Delete Button : Delete a defined cutting line
The Modify Button : Modify a defined cutting line
Cutting Line Detail : Define a Cutting Line.
Name : Name of a Cutting Line
Pnt1 : Start point of a Cutting Line
Pnt2 : End point of the Cutting Line
Options
Define the plane and color for representing the graph.
Normal : Display the graph in the Normal direction of floor slab elements.
In Plane : Display the graph in the In-Plane direction of floor slab elements.
Scale Factor : Scale factor for diagram output
Reverse : Express the Diagram in the reverse direction.
Graph
Produce the output in a Graph Window ( valid only if 'Cutting lines' is selected).
Access the Plate Cutting Diagram Mode Dialog Box to determine the type of Graph Window.
The ... Button
Draw graphs on separate panes : Graphs pertaining to different Cutting Lines/Planes produced separately
Draw graphs on All in one pane : All the graphs pertaining to different Cutting Lines/Planes simultaneously produced in one graph
X-axis : Define the X-axis of the graph
Distance from Pnt1 : Distance from the first point
Global X coord.
Global Y coord.
Global Z coord.
Value Output : Produce the moments in numerical values on the Cutting Line Diagram(s).
MinMax Only : Produce only the maximum and minimum values on the Cutting Line Diagram(s).
Element Edge
Specify the direction to produce the one-way shear check results of the slab elements with reference to the user-defined Cutting Line.
Both : Produce the Max/Min one-way shear check results of the slab elements on both sides of the user-defined Cutting Line.
Left : Produce the one-way shear check results of the slab elements on the left side of the user-defined Cutting Line.
Right : Produce the one-way shear check results of the slab elements on the right side of the user-defined Cutting Line.
Note
When the user-defined Cutting Line does not pass through the Mesh Line, Both, Left and Right will produce the same one-way shear check results.
Components
Rebar
Display the spacing of rebars in contour, which are placed in a slab using the standard rebar sizes defined in the Design Criteria for Rebars.
As_req(mm^2/m)
Display the area of the required reinforcement.
Rho_req
The ratio of the area of the required reinforcement to the gross area
x/d
The ratio of the neutral axis depth to the effective depth
Resistance Ratio
The ratio of the design moment to the moment resistance when the designed rebar spacing is applied.
Wood Armer Moment
Display the Wood Armer Moments in contour.
Note
From the analysis results, following plate forces about the local axis are calculated
- mxx
- myy
- mxy
In order to calculate design forces in the reinforcement direction, angle α and φ will be taken as following figure:
x, y: local axis of plate element
1, 2: reinforcement direction
α: angle between local x-direction and reinforcement direction 1
φ: angle between reinforcement direction 1 and reinforcement direction 2
Firstly, internal forces (mxx, myy and mxy) are transformed into the a-b coordinate system.
Then, Wood-Armer moments are calculated as follows:
Operations
The Design Result Button : Produce the detail flexural design results of slab elements in a text format.
The Design Force Button : Produce the flexural design forces of slab elements in a tabular format.
The Update Rebar Button : Update the rebar quantity. The updated rebar data is used for strength verification.
Note Update rebar Option
Element : Update the rebar quantity for each slab element
Sub-Domain : Update the rebar quantity for each sub-domain
[Example]
Type of Display
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.
Color 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).
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 horizontally displays the 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.
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.