New Model from Template
Support Displacement
Click the File menu > New Model command to access the New Model form.
Click the drop-down list in the status bar to change the units to .
Click on the 2D Frames button to access the 2D Frames form and select Portal in the 2D Frame Type drop-down list.
Type 14 in the Story Height edit box.
Type 30 in the Bay Width edit box.
Click the + (plus) symbol following the Beams or Columns drop-down list to access the Frame Properties form.
Click the Import New Property button to access the Import Frame Section Property form.
Select Steel from the Frame Section Property Type drop-down list and click the I/Wide Flange button to access the Section Property File form. Click on the SECTIONS.PRO file and click the Open button. A database form listing the sections available from the database will display. In the database form:
Click the + (plus) symbol preceding the Material drop-down list to access the Define Materials form. In that form:
Highlight the A992Fy50 definition in the Materials display list.
Click the Modify/Show Material button to display the Material Property Data form.
Verify that the Units drop-down list is set to .
Verify that the Modulus of Elasticity is 29000 and Poisson’s ratio is 0.3.
Click the OK buttons on the Material Property Data and Define Materials forms to close those forms and return to the database form.
On the database form, ensure that A992Fy50 is displayed in the Materials drop-down list.
Scroll down the list, and while holding down the Ctrl key, click on the W14X90, W24X55 and W24X68.
Click the OK button, and the I/Wide Flange form will display. Note that A992Fy50 is displayed in the Material drop-down list and that the Section Name is a drop-down list that consists of W14X90, W24X55 and W24X68. Select any of those sections and the Material property remains the same.
Click the OK button to close the I/Wide Flange and Frame Properties forms and return to the 2D Frames form.
In the Beams drop-down list, select the W24X68 section. In the Columns drop-down list, select the W14X90 section.
Click the OK button to close the 2D Frames form and display the model template in the program windows.
Click the “X” in the top right-hand corner of the 3-D View window to close it.
Click the Set Display Options button (or the View menu > Set Display Options command) to access the Display Options for Active Window form. In that form:
Check the Labels box in the Frames/Cables/Tendons area.
Click the OK button.
Select frame elements 6 and 10. Press the delete key on the keyboard to delete these elements.
Click the Define menu > Coordinate Systems/Grids command to access the Coordinate/Grid Systems form. In that form:
Highlight (select) GLOBAL in the Systems list box.
Click the Modify/Show System button to access the Define Grid System Data form. In that form:
In the Display Grids as area of the form, ensure that the Ordinates option is selected.
For Grid ID z3, click in the Ordinate cell (it should read 28) and type 26 to change the ordinate location from 28 to 26.
Check the Glue To Grid Lines check box.
Click the OK buttons on the Define Grid System Data and Coordinate/Grid Systems forms to close the forms.
Select line object 8.
Click the Assign menu > Frame > Frame Sections command to access the Frame Properties form. In that form:
Click on W24X55 in the Properties area to highlight it.
Click the OK button.
Click the Show Undeformed Shape button to remove the displayed frame section assignments and redisplay the line object labels.
Click the Set Display Options button (or the View menu > Set Display Options command) to access the Display Options for Active Window form. In that form:
Check the Labels box in the Joints area.
Uncheck the Labels box in the Frames/Cables/Tendons area.
Click the OK button.
Click the drop-down list in the status bar to change the units to .
Select joint 4 (labeled B in the problem statement).
Click the Assign menu > Joint Loads > Displacements command to access the Ground Displacements form. In that form:
Type -1 in the Translation Global Z edit box.
Click the OK button.
Click the drop-down list in the status bar to change the units to .
Click the Show Undeformed Shape button to remove the displayed joint displacement assignment.
Click the Set Display Options button (or the View menu > Set Display Options command) to access the Display Options for Active Window form. In that form:
Uncheck the Labels box in the Joints area.
Click the OK button.
Click the Analyze menu > Set Analysis Options command to access the Analysis Options form. In that form:
Click the Plane Frame XZ Plane button to set the available degrees of freedom.
Click the OK button.
Click the Run Analysis button to access the Set Load Cases to Run form. In that form:
Highlight (select) MODAL in the Case Name list and click the Run/Do Not Run Case button.
Verify that the DEAD load case is set to Run in the Action list.
Click the Run Now button to run the analysis.
When the analysis is complete, check the messages in the SAP Analysis Monitor window (there should be no warnings or errors) and then click the OK button to close the window.
Click the Display menu > Show Forces/Stresses > Joints command to access the Joint Reaction Forces form, and click the OK button to display the joint reactions on the screen.
Note: To change the minimum font size, click the Option menu > Dimensions/ Tolerances command to display the Dimensions/Tolerances Preferences form. In the Minimum Graphic Font Size edit box, input a new size, for example 5 or 6 points. Click the OK button.