Form: Concrete Column Design Information {Code} or Concrete Beam Design Information {Code}
Interactive concrete frame design allows design results for any frame element to be reviewed, the design overwrites to be changed interactively, and the results to be viewed immediately.
Access Interactive Design as follows:
Select the Analyze menu > Run Analysis command to analyze the model.
Select the Design menu > Concrete Frame Design > Start Design/Check command.
Right click on a frame element while the design results are displayed on it to enter the interactive design mode and interactively design the element using the Concrete Column Design Information {Code} or Concrete Beam Design Information {Code} form. If design results are not currently displayed, click the Design menu > Concrete Frame Design > Interactive Design command and then right click a beam to enter the interactive design mode for that beam.
Use the various areas of the Concrete Column Design Information {Code} or Concrete Beam Design Information {Code} form to review the design:
Story display box. The story level ID associated with the frame element.
Beam/Column display box. The label associated with a frame element that has been assigned a concrete frame section property that is designated as a beam or a column.
Important Note: A concrete frame element is designed as either a beam or a column depending on how its frame section property was designated when it was defined using the Define menu > Section Properties > Frame Sections command. Note that when using that command, after a section has been specified to have a concrete material property, click the Reinforcement button and specify whether it is a beam or a column.
Section Name display box. The current design section property. The current element design is performed for the section property specified in this edit box.
Table Showing Reinforcement Information. This table shows the output information obtained for each design load combination at each output station along the frame element. For columns that are designed by ETABS, the item with the largest required amount of longitudinal reinforcing is initially highlighted. For columns that are checked by ETABS, the item with the largest capacity ratio is initially highlighted. For beams, the item with the largest required amount of bottom steel is initially highlighted. Following are the possible headings in the table:
Combo ID: The design load combination considered.
Station location: The location of the station, measured from the i-end of the frame element.
Columns:
Longitudinal reinforcement: Applies to columns only and specifically to columns for which ETABS designs the longitudinal reinforcing. It is the total required area of longitudinal reinforcing steel.
Capacity ratio: Applies to columns only and specifically to columns for which the location and size of reinforcing bars have been specified and thus ETABS checks the design. This item is the capacity ratio. The capacity ratio is determined by first extending a line from the origin of the PMM interaction surface to the point representing the P, M2 and M3 values for the designated load combination. Call the length of this first line L1. Next a second line is extended from the origin of the PMM interaction surface through the point representing the P, M2 and M3 values for the designated load combination until it intersects the interaction surface. Call the length of this line from the origin to the interaction surface L2. The capacity ratio is equal to L1/L2.
Major shear reinforcement: Applies to columns only and is the total required area of shear reinforcing per unit length for shear acting in the column major direction.
Minor shear reinforcement: Applies to columns only and is the total required area of shear reinforcing per unit length for shear acting in the column minor direction.
Beams
Top steel: Applies to beams only and is the total required area of longitudinal top steel at the specified station.
Bottom steel: Applies to beams only and is the total required area of longitudinal bottom steel at the specified station.
Shear steel: Applies to beams only and is the total required area of shear reinforcing per unit length at the specified station for loads acting in the local 2-axis direction of the beam.
Overwrites button. Click the Overwrites button to access the Concrete Frame Design Overwrites form. Use that form to make revisions to the concrete frame overwrites.
Summary button.
In the "Table Showing Reinforcement Information" area of the Concrete Column Design Information {Code} or Concrete Beam Design Information {Code} form, highlight the Station Location associated with summary data to be displayed.
Click the Summary button to display the Report Viewer and a summary of the design data for the highlighted section. The form has buttons to move through the pages of the summary, to Zoom into the individual report pages, print the report, and save it to the Word compatible format.
Flex. Details button.
In the "Table Showing Reinforcement Information" area of the Concrete Column Design Information {Code} or Concrete Beam Design Information {Code} form, highlight the Station Location associated with flexural detail data to be displayed.
Click the Flex. Details button to display the Report Viewer and the axial force and biaxial moment design for PU, M2 and M3, factored and minimum biaxial moments, axial force, biaxial moment factors and other details for the highlighted section. The form has buttons to move through the pages of the summary, to Zoom into the individual report pages, print the report, and save it to the Word compatible format.
Shear Details button.
In the "Table Showing Reinforcement Information" area of the Concrete Column Design Information {Code} or Concrete Beam Design Information {Code} form, highlight the Station Location associated with shear details data to be displayed.
Click the Shear Details button to display the Report Viewer and the shear design for V2 and V3, design forces, capacity shear, design basis, concrete shear capacity shear rebar design, and other details for the highlighted section. The form has buttons to move through the pages of the summary, to Zoom into the individual report pages, print the report, and save it to the Word compatible format.
Envelope button. Click this button to display the Report Viewer and the envelope data for the selected Story and Column/Beam ID. The form has buttons to move through the pages of the summary, to Zoom into the individual report pages, print the report, and save it to the Word compatible format.
Columns Only. The following buttons are added to the form when the selected member has a column property assignment.
Interaction button.
In the "Table Showing Reinforcement Information" area of the Concrete Column Design Information form, highlight the Combo ID and Station Location associated with the curve that is to be displayed.
Click the Interaction button to display the Interaction Surface for Section {Name} {Code} form. Use that form to show the biaxial interaction surface at the specified Station Location for the specified concrete section.
Joint Shear button.
In the "Table Showing Reinforcement Information" area of the Concrete Column Design Information form, highlight the Station Location associated with joint shear data to be displayed.
Click the Joint Shear button to display the Report Viewer and the compression, tension bending, shear and overstrength factors for the highlighted section. The form has buttons to move through the pages of the summary, to Zoom into the individual report pages, print the report, and save it to the Word compatible format.
B/C Details button.
In the "Table Showing Reinforcement Information" area of the Concrete Column Design Information form, highlight the Station Location associated with beam/column capacity ratio to be displayed.
Click the B/C Details button to display the Report Viewer and the Beam/Column Capacity Ratio details. The form has buttons to move through the pages of the summary, to Zoom into the individual report pages, print the report, and save it to the Word compatible format.
See Also