how to model and analyse a 3D frame in Autocad Robot Structural Analysis
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Set preferences Learn how to start a new Frame 3D design session and how to set the preferences for regional settings to United States (Imperial units). 1. Click File New Project…, and then click (Frame 3D Design). 2. Click Tools Preferences. Alternatively, click (Tools) in the Standard toolbar on the top of the program. Then click (Preferences) in the Tools toolbar. The Preferences dialog opens. 3. Ensure that Languages is selected in the left pane of the dialog, and then select United States from the Regional settings list. Note: The Regional settings set the default databases (for profiles, and materials), as well as the units and national codes to the standards of a country. 4. Click Accept. 5. Save the project as Frame_3D_Preferences.rtd. 6. Close the program, and then start it again in order to update the settings. The program restarts and the Regional settings are updated according to the American standards for profiles, materials, codes. In this case, the Imperial units will be used. Tip: The active units are displayed at the bottom right corner of the program. If you click this area the Job Preferences dialog opens where you can define an additional parameters for your project.
Transcript
Set preferencesLearn how to start a new Frame 3D design session and how to set the preferences for regional settings toUnited States (Imperial units).
1. Click File New Project…, and then click (Frame 3D Design).
2. Click Tools Preferences.
Alternatively, click (Tools) in the Standard toolbar on the top of the program. Then click (Preferences) in the Tools toolbar.The Preferences dialog opens.
3. Ensure that Languages is selected in the left pane of the dialog, and then select United States fromthe Regional settings list.
Note: The Regional settings set the default databases (for profiles, and materials), as well as theunits and national codes to the standards of a country.
4. Click Accept.
5. Save the project as Frame_3D_Preferences.rtd.
6. Close the program, and then start it again in order to update the settings.The program restarts and the Regional settings are updated according to the American standards forprofiles, materials, codes. In this case, the Imperial units will be used.Tip: The active units are displayed at the bottom right corner of the program. If you click this area theJob Preferences dialog opens where you can define an additional parameters for your project.
Add sectionsLearn how to add sections to the list of available sections in the project.
1. Continue working in your project, or open the project Frame_3D_Preferences.rtd.The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
3. Check presence of the following sections: W 12x96, HP 10x42, HP 12x63, and LP 2x2x0.1875.
4. If the sections specified above are not available in the list, click (New section definition).
5. To add the W 12X96 section, set the following parameters as follows: Section type: Steel, Database: AISC 14.0, Family: W, Section: W 12x96.
6. Click Add.
7. Repeat this process for the following sections: HP 10x42, HP 12x63, and LP 2x2x0.1875.
Note: For all sections, use the AISC14.0 Database, and Steel as the Section type.
8. Close the New Section dialog. The additional sections appear on the list as shown below:
9. Close the Sections dialog.
Define the structureLearn how to define elements of structure like columns, beams and bracings using the previously addedsections.
1. In the Standard toolbar, expand the Layouts drop-down menu and select Bars as shown below:
The layout is divided in three parts: View, Bars dialog and Bars table.
2. At the bottom of the drawing area, expand the list of views, and then select the YZ view.
3. In the Bars dialog, set the Bar type to Column and set the Section to W 12x96.
4. To create the first column, enter the Node coordinates in the Beginning and End boxes as follows: Beginning: (0.00, 0.00, 0.00),
Important: The coordinates syntax depends on your regional Windows format. In this tutorial weuse the English (United States) format. If you want to change your Windows format, click: Start
Control Panel Region and Language Format.
End: (0.00, 0.00, 12.00).
5. Click Add.The column displays in the drawing area.
6. Repeat this process to add the second column, with the following coordinates: Beginning: (0.00, 20.00, 0.00), End: (0.00, 20.00, 12.00).
7. Click Add. The second column displays in the drawing area.
8. Click (View Zoom Zoom All) to better visualize the defined columns.
9. To create the first beam, go to the Bars dialog, and then set the Bar Type to Beam, andthe Section to HP 10x42.
10. Enter the beam's coordinates, in the Beginning and End boxes as follows: Beginning: (0.00, 0.00, 12.00), End: (0.00, 20.00, 12.00).Alternatively, place your cursor in the Beginning box, and then click the nodes 2 and 4 in the drawingarea.
11. Click Add. The beam displays in the drawing area.
12. To create the first bracing, go to the Bars dialog, and then set the Bar type to Simple bar, andthe Section to LP 2x2x0.1875.
13. Enter the bracing's coordinates, in the Beginning and End boxes as follows: Beginning: (0.00, 0.00, 0.00), End: (0.00, 20.00, 12.00).Alternatively, place your cursor in the Beginning box, and then click the nodes 1 and 4 in the drawingarea.
14. Click Add. The first bracing displays in the drawing area.
15. Repeat this process for the second bracing with the following coordinates: Beginning: (0.00, 0.00, 12.00), End: (0.00, 20.00, 0.00).Alternatively, place your cursor in the Beginning box, and then click the nodes 2 and 3 in the drawingarea.
16. Click Add. The second bracing displays in the drawing area.
Define supportsLearn how to define supports for the frame structure.
1. In the Standard toolbar, expand the Layouts drop-down menu and select Supports.
The layout is divided in three parts: View, Supports dialog and Supports table.
2. Click Fixed from the list in the Supports dialog.
3. Place the cursor in the Current selection box, and then select the lower column nodes in thedrawing area. To easily select all the lower column nodes, click and hold the left mouse button whileyou draw a rectangle around the nodes 1 and 3.
4. Click Apply.
5. Save the project as Frame_3D_Model2D.rtd.
Copy existing 2D frameLearn how to copy the 2D frame to generate a 3D frame.
1. Continue working in your project or open the project Frame_3D_Model2D.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
2. In the Standard toolbar, expand the Layouts drop-down menu and select Start as shown below.
The layout updates to its initial state.
3. At the bottom of the drawing area, expand the list of views, and then select the 3D view.The frame is displayed as shown below:
Note: If you don't see the bars and nodes numbers, click and at the bottom left of the drawingarea to display them.
5. Select the HP 12x63 section. We will use this type of section to add new beams which will be createdautomatically during copying.
6. Click Close.
7. In the Node Selection box of the Selection toolbar, enter the beam's nodenumbers separated by a space as follows: "2 4", and then press Enter. Selected nodes arehighlighted in green.
8. In the Bar Selection box of the Selection toolbar, enter the columns' andbeam's numbers separated by a space as follows: "1 2 3", and then press Enter. Selected bars andnodes are highlighted on the screen as shown below.
10. In the Translation dialog: Enter "20, 0, 0" in the Translation vector box, Select the Drag option in order to create additional linking elements between the existing nodes
and the new nodes created during copying, Enter 2 in the Number of repetitions box.
11. Click Execute and close the Translation dialog.
12. Click (View Zoom Zoom All) to display the whole structure.The 3D frame structure is displayed.
Note: In this structure, beams number 6, 7, 11 and 12 were created automatically by the Drag option.
13. In the drawing area, select the bracing's number 4 and 5. To do this, select a bracing, then hold theCtrl key and select the other bracing.Selected bracings are highlighted as shown below.
15. In the Translation dialog: Enter "40, 0, 0" in the Translation vector box, Enter 1 in the Number of repetitions box.
16. Click Execute, and then close the Translation dialog.The structure looks as follows:
17. Click in the drawing area to deselect the bracing's number 16 and 17.
18. Save the project as Frame_3D_Model3D.rtd.
Define load casesLearn how to define dead, wind and live load cases.
1. Continue working in your project, or open the project Frame_3D_Model3D.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
2. In the Standard toolbar, expand the Layouts drop-down menu and select Loads as shown below:
The layout is divided in three parts: View, Load Types dialog, and Loads Case table.
3. By default, the Load Types dialog contains the necessary information in order to create a dead load.Click Add to accept the default and define a dead load with the standard name DL1.The DL1 load is added to the list of defined cases (see image in step 6), and a new row is created inthe Loads - Case table.
4. Select wind from the Nature list, and then click Add to define a wind load.The WIND1 load is added to the list of defined cases.
5. Repeat step 4 to create a second wind load with the name WIND2.
6. Select live from the Nature list, and then click Add to define a live load.The LL1 load is added to the list of defined cases and all loads are now ready to be applied on thestructure.
Apply load casesLearn how to define types and values of loads for particular load cases.
1. In the Cases Selection box of the Selection toolbar, expand the Cases drop-down menu and select 2:WIND1.
3. In the Node tab, click (Nodal force).The Nodal Force dialog opens.
4. Type value of load 50 in the FX box, and then click Add.
5. Place the cursor in the Apply to field, and type "2 4" to select the nodes on which you want to apply anodal force load.Alternatively, go to the drawing area, and hold the Ctrl key to select nodes with numbers 2 and 4.
6. Click Apply.The WIND1 load appears in the drawing area and in the Loads - Case table.
7. Click (Load value descriptions) at the bottom of the drawing area to display the descriptions ofloads values.
8. In the Cases Selection box of the Selection toolbar, expand the Cases drop-down menu and select 3:WIND2.
9. Go to the Bar tab, and click (Uniform load).The Uniform Load dialog opens.
10. Type value of load -10 in the PX box, and then click Add.
11. Place cursor in the Apply to field, and type "13 14" to select columns to which a uniform load will beapplied.Alternatively, go to the drawing area, and hold the Ctrl key to select columns withnumbers 13 and 14.
12. Click Apply.The WIND2 load appears in the drawing area and in the Loads - Case table.
13. In the Cases Selection box of the Selection toolbar, expand the Cases drop-down menu and select 4:LL1.
14. In the Bar tab, click (Uniform load).The Uniform Load dialog opens.
15. Clear PX box, and then type value of load -2 in the PZ box, and then click Add.
16. Place cursor in the Apply to field, and type "6 7 11 12" to select columns to which a uniform load willbe applied.Alternatively, go to the drawing area, and hold the Ctrl key to select columns withnumbers 6, 7, 11 and 12.
17. Click Apply and close Load Definition dialog.The LL1 load appears in the drawing area and in the Loads - Case table.
18. In the Cases Selection box of the Selection toolbar, expand the Cases drop-down menu andselect Simple Cases.
19. All defined loads shown below:
Note: You can use the Loads - Cases table to modify the defined loads. You can change for examplethe loads types, list of elements which loads are applied and values of these loads. You can also usethis table to add new loads to the structure.
20. Save the project as Frame_3D_Loads.rtd.
Generate a manual combinationLearn how to define a new load combination and how to define load cases for this combination manually.
1. Continue working in your project or open the project Frame_3D_Loads.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
6. Select the live nature, enter 1.45 in the Factor box, and then click Change.
7. Close the Combination Factors dialog.
8. In the Combinations dialog, click to transfer all defined load cases from the left panel to the list ofcases in combination in the right panel.
9. Click Apply, and then click Close.The load combination COMB1 is added to the list of defined load cases.
10. Save the project as Frame_3D_Combination.rtd.
Run a calculationLearn how to start the analysis process (linear static).
Note: In this tutorial, we run a linear static analysis. A key strength of Robot is the possibility to define awide range of analysis types such as linear static, modal, seismic, spectral, harmonic, or time historyanalyses. For more information about the types of analyses available inRobot, see Analysis Types -Definition.
1. Continue working in your project or open the project Frame_3D_Combination.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
The calculation process starts. The Calculations dialog shows the advancement of the process, whichdepends on the size of the project being analyzed.
3. Once the calculations are complete the information: Results (FEM): available is displayed: At the top of the program (see image 1 below), At the bottom of the program (see image 2 below).
4. Save the project as Frame_3D_Analysis.rtd.
Display beam results graphicallyLearn how to display bending moments on beams for a selected load case.
1. Continue working in your project or open the project Frame_3D_Analysis.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
2. In the Standard toolbar, expand the Layouts drop-down menu and select Results as shown below:
The layout is divided in three parts: View, Diagrams dialog, and Reactions in the coordinatesystem table.
3. Click in the drawing area to deselect the beam number 6, 7, 11, and 12.
4. In the Cases Selection box of the Selection toolbar, expand the Cases drop-down menu and select 4:LL1 as shown below:
5. Go to the NTM tab of the Diagrams dialog, select MY Moment, and click Normalize.
Note: Click Normalize to scale the values of the selected type of diagram automatically.
6. To display numerical values of internal forces, go to the Parameters tab.
Tip: You can access the Parameters tab without having to scroll through the tabs. Place the mousecursor over the arrow near the top left corner of the dialog to display the list of tabs.
7. In the Parameters tab, set the Diagram description to labels, and then select Global extremes fromthe Values drop-down menu .
8. Click Apply.
9. The view displays the bending moment diagrams for all beams as shown below.
10.Go to the NTM tab of the Diagrams dialog, deselect MY Moment, and click Apply.
Display results on bars in tabular formLearn how to display internal forces and displacements for particular load cases and combinations.
Note: Using the tables you can display different type of values like forces, displacements, reactions,stresses etc. The tables can easily be exported to MS Excel® (right-click in the table area) and tables canalso be sorted by choosing certain load cases, member types etc. Advanced users can also define"groups" and display results only for these groups.
1. Continue working in your project or open the project Frame_3D_Analysis.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
2. In the Standard toolbar, expand the Layouts drop-down menu and select Results as shown below:
The layout is divided in three parts: View, Diagrams dialog and Reactions in the coordinate systemtable.
3. Click View Tables.Alternatively, right-click in the View-Cases window, and then click Tables from the context menu.The Tables: Data and Results dialog opens.
4. Select Forces, and then click OK.
Alternatively, click (Forces - Table) in the Structure Model toolbar on the right side of theprogram.The Forces table opens and displays information about internal forces. Tabs are available at thebottom of the table, allowing you to visualize information on Values, Envelope, and Global Extremesdata.
5. In the Cases Selection box of the Selection toolbar, expand the Cases drop-down menu and select 5:COMB1.
The table updates and presents the results for the COMB1 case.
6. In the Forces table, double-click the FX column header to sort the forces from the maximum to theminimum values.
7. Click View Tables.Alternatively, right-click in the View-Cases window, and then click Tables from the context menu.The Tables: Data and Results dialog opens.
8. Select Nodal Displacements, and then click OK.
Alternatively, click (Displacements) in the Structure Model toolbar on the right side of theprogram.
9. Right-click in the Displacements table, and then click Table Columns from the context menu.
10. In the Nodal value selection dialog: Go to the Displacement tab, and select U - total displacements, Go to the General tab, and then select Coordinates from the Element data selection group.
11. Click OK.Four new columns are added to the Displacements table (as shown in the image below).
12. In the Displacements table, go to the Global extremes tab located at the bottom of the table.
13. Close the Displacements and Forces tables.
Stress Analysis for StructureLearn how to obtain and analyze stress diagrams/maps for the structure
1. Continue working in your project or open the project Frame_3D_Analysis.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
2. In the Standard toolbar, expand the Layouts drop-down menu and select Stress Analysis -structure as shown below:
The layout is divided in three parts: View, Stress Analysis - Structure dialog, and Stress Analysis -Structure table.
3. In the Cases Selection box of the Selection toolbar, expand the Cases drop-down menu and select 2:WIND1.
4. Click (Section shapes) at the bottom left of the drawing area to display section shapes for all thestructure members.
5. In the Stress Analysis - Structure dialog: Go to the Diagrams tab, and then select Max in the Mises group, Go to the Parameters tab, and then select Filled in the Filling group.
6. Click Apply.A dialog appears showing the Calculation progress. When the calculations are finished the stressvalues are displayed graphically in the drawing area.
Note: The Stress Analysis - Structure dialog allows you to select a user-defined stress and a set ofbasic stress types such as normal, tangent, Mises and Tresca.
7. Go to the Maps - Deformation tab, select Deformation, and then click Apply. Select this option todisplay stress maps graphically on the deformed structure.
8. Click (Results Stress Analysis Stress Maps).An additional window opens and displays the structure with section shapes and accurate detailedstress maps, as shown below.
Tip: The size of member sections in stress maps is by default greater than the real size of themember sections so that the stress maps presented for these sections are more readable. Press theHome key on your keyboard to get real proportions between the member length and dimensions ofthe member cross section. You can also press the PgUp and PgDn keys to modify these proportions.
9. Close the Stress Analysis - structure (3D View) window.
10. In the Stress Analysis - Structure dialog, go to the Diagrams tab, and then deselect Max inthe Mises and User-defined group.
11. Click Apply.
12. Save the project as Frame_3D_Results.rtd.
Definition of code parametersLearn how to create new type of member and how to assign it to the selected elements in the structure.
1. Continue working in your project or open the project Frame_3D_Results.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials
2. In the Standard toolbar, expand the Layouts drop-down menu and select Steel/Aluminum Design as
shown below:
The layout is divided in three parts: View, Definitions, and Calculations dialogs.
3. Click (Design Steel Members Design - Options Code parameters).The Member Type dialog opens.
4. Select Beam, and then click (New steel member type definition).The Member Definition Parameters dialog opens.Tip: Select the Member Type that is most similar to the new type that you want to create so thatsome of the basic properties are automatically applied.
5. Type Beam_1 in the Member type text box.
6. In the Buckling length coefficient Y group of options, click .The Buckling Diagrams dialog opens.
7. Click , and then click OK.The buckling effects are removed from the calculations.
8. Repeat steps 6 and 7 for the Buckling length coefficient Z.
9. In the Lateral buckling parameters group, click .The Parameter Cb dialog opens.
10. Click , and then click OK.
11. Click Upper flange, then in the Lateral buckling length coefficients dialog, click (Intermediatebracings).The Internal bracings dialog opens.
12. In the Define segments between bracings group of the Lateral buckling-upper flange tabselect Define manually coordinates of the existing bracings, and then type 0.5.The Bracing is displayed in violet on the view as shown below.
13.Go to the Lateral buckling-lower flange tab and repeat step 12 for the lower flange.
14. Click OK to close the Internal bracings dialog.
15. The information in the Member Definition dialog box should now look like the example shown below.
16. Click Save, and then click Close.The new member type is now listed in the Member Type dialog.
17. Ensure that Beam_1 is selected in the Member Type dialog, and then type "6 7 11 12" in theLines/Bars field as shown below.Alternatively, place the cursor in the Lines/Bars field, then go to the drawing area, and holdthe Ctrl key to select beams with numbers6, 7, 11 and 12.
18. Click Apply, and then click Close.
19. Save the project as Frame_3D_New_Member.rtd.
Define groups of membersLearn how to define groups of members.
1. Continue working in your project or open the project Frame_3D_New_Member.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
2. In the Definitions dialog, go to the Groups tab, and then click New.
3. Place the cursor in the Member list box, then go to the drawing area, and hold the Ctrl key to selectall the columns.Alternatively, enter the column numbers "1 2 8 9 13 14" in the Member list box.
4. Type Columns in the Name box, and then click Save.The defined group of columns is shown below.
5. In the Definitions dialog, click New to create a new group.
6. Place the cursor in the Member list box, then go to the drawing area, and hold the Ctrl key to selectbeams with numbers 6, 7, 11 and12.Alternatively, enter the beam numbers "6 7 11 12" in the Member list box.
7. Type Primary_Beams in the Name box, and then click Save.The newly defined group of beams is shown below.
8. In the Definitions dialog, click New to create a new group.
9. Place the cursor in the Member list box, then go to the drawing area, and hold the Ctrl key to selectbeams with numbers 3, 10, and15.Alternatively, enter the beam numbers "3 10 15" in the Member list box.
10. Type Secondary_Beams in the Name box, and then click Save.The newly defined group of beams is shown below.
11. In the Definitions dialog, click New to create a new group.
12. Place the cursor in the Member list box, then go to the drawing area, and hold the Ctrl key to selectbracings with numbers 4, 5, 16and 17.Alternatively, enter the beam numbers "4 5 16 17" in the Member list box.
13. Type Bracings in the Name box, and then click Save.The newly defined group of bracing is shown below.
14. Save the project as Frame_3D_Groups.rtd.
Code group designLearn how to design groups of members.
1. Continue working in your project or open the project Frame_3D_Groups.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials.
2. Click at the bottom left corner of the program as shown below.
3. Select Bars, then select Sections - legend by colors, and then click OK.
4. Each of the sections displays a different color as shown below.
5. In the Calculations dialog, select the Code group design option, and then click List on the sameline.The Code Group Selection dialog opens.
6. Click All.All the defined groups are added to the Code group list and will be considered during the designprocess.
7. Close the Code Group Selection dialog.
8. In the Calculations dialog, select Optimization, and then click Options.The Optimization Options dialog opens.
9. Select Weight, and then click OK.During the calculations, the program will try to find the lightest section in the group of sections thatmeet the code defined criteria.
10. In the Calculations dialog, click Calculations.
11. The Code Group Design dialog opens, displaying the most significant information about the sections.
Note: In the Results tab, the blue icon ( ) indicates the optimum section, while the red and greenarrows ( and ) indicate sections which do not meet the code requirements, or sections which meetthe requirements with excessive reserves.
12. Click Change all.A message appears indicating that changes will be made in the database containing structure data,and that the result status will be "not available".
13. Click Yes to accept these changes.The sections in the structure are automatically replaced with the optimized sections.
14. Click Close, and then, click Cancel in the Calculation Result Archiving dialog.The calculation result can be saved in the calculation result archive. In this tutorial we will save thecalculation result at the end of the design process.New sections are displayed in the View window:
Note: The Section sizes were changed for all members groups: Primary_Beams from: from HP 12x63 to HP 10x42, Secondary_Beams: from HP 10x42 to HP 8x36, Bracings: from LP 2x2x0.1875 to LP 8x8x0.5, Columns: from W 12x96 to W 21x55.
15. Now that the sections have been optimized, you need to run the main calculations again. To do this,
click (Analysis Calculations).
16. In the Calculations dialog, click Calculations to start the design process with the updated sections.Results of the Code Group Design are shown below.
Note: During the design process, the program found new lighter section for the Columns.
17. Click Change all, and then click Yes to accept the changes.
18. Click Close, and then in the Calculation Result Archiving dialog click Cancel.The updated sections are displayed in the View window:
Note: The section size for the Columns group was updated from W 21x55 to W 24x62.
19. The Columns sections have been optimized, you need to run the main calculations again. To do this,
click (Analysis Calculations).
20. In the Calculations dialog, click Calculations to start the design process with the updated columnssections.The Results of the Code group design are shown below.
Note: During the design process, the program found lighter sections for the Columns.
21. Click Change all, and then click Yes to accept the changes.
22. Click Close, and then in the Calculation Result Archiving dialog box click Cancel.The New sections are displayed in the View window:
Note: The section size for the column group was updated from W 24x62 to W 21x62.
23. The Columns sections have been optimized, you need to run the main calculations again. To do this,
click (Analysis Calculations).
24. In the Calculations dialog, click Calculations to start the design process with the updated columnssections.The Results of the Code Group Design are the same as before, so we can stop the design process.
25. Click Close, and then in the Calculation Result Archiving dialog click Save.The final calculation result is saved in the calculation result archive.
26. Click at the bottom left corner of the program as shown below.Alternatively, click View Display.The Display dialog opens.
27. Select Bars, and then deselect Sections - legend by colors.
28. Click OK.
29. Save the project as Frame_3D_Design.rtd.
Code group verificationLearn how to perform verification for groups of members in the service limit state.
1. Continue working in your project or open the project Frame_3D_Design.rtd.
Note: The Tutorial files are located in C:\ProgramData\Autodesk\Examples\Tutorials
2. In the Calculations dialog, select Code group verification option, and then type "1to4" in the sameline.
3. In the Limit states group of options select SLS, in order to perform calculations for the service limitstate, and then type the following loads:
Dead loads: "1", Live loads: "4", Total loads: "1to4".
4. In the Calculations dialog, click Calculations.
5. The Code Group Verification dialog opens displaying the most significant information about thesections. The Messages tab (as shown below), contains important information for the next steps inthe design process:
Note: The Member Type for Bracings does not determine limit values for deflections. The next stepexplains how to set these parameters in order to perform the verification as required.
6. Close the Code Group Verification dialog, and then in the Calculation Result Archiving dialogclick Cancel.A calculation result can be saved in the calculation result archive. In this tutorial we will save thecalculation result at the end of the verification process.
7. Click (Design Steel Members Design - Options Code parameters).The Member Type dialog opens.
8. Select Simple bar, and then click (New steel member type definition).The Member Definition Parameters dialog opens.Tip: Select the Member Type that is most similar to the new type that you want to create so thatsome of the basic properties are automatically applied.
9. Type Simple bar_1 in the Member type text box, and then click Service.The Serviceability - Displacement limiting values dialog opens.
10. Select the following values: In the Deflection limits (local system) group of options, select the Absolute value for Dead, Live
and Total Loads, In the Node displacement limits (global system) group of options, select the Relative value for Total
Loads.
11. Click OK.
12. Click Save and close the Member Definition Parameters dialog.The new member type is now listed in the Member Type dialog box.
13. Ensure that Simple bar_1 is selected, type "4 5 16 17" in the Lines/Bars field as shown below.Alternatively, place the cursor in the Lines/Bars field, then go to the drawing area, and holdthe Ctrl key to select bracings with numbers4, 5, 16 and 17.
14. Click Apply, and then click Close.
15. In the Calculation dialog, click Calculation.Results of the Code Group Verification are shown below.
Note: All sections are now properly defined for all the groups of members.
16. To visualize the detailed results for a selected group, click 4 Simple bar_1_4 in the Bracings group.The row is highlighted in black and the Results dialog is displayed:
17. Review the results, and then Click OK.
18. Close the dialog, and then click Save in the Calculation Result Archiving dialog.A final calculation result is saved in the calculation result archive.
19. Save the project as Frame_3D_Verification.rtd.
