Lecture #01Structural Design Course at CEM Solution ETABS - TUTORIAL Setting up the Model. Starting ETABS. You will be prompted with a dialog box asking whether you want to import existing definitions. This tutorial starts from scratch, so click the “No” button. Define the Grid. Next, you will be asked to define the grid layout and story information for your model. • • • • • • • • • • - Change the units to Kip-ft; -Select “Uniform Grid Spacing” -Type “9” for the number of lines in the x direction and “9” for the number of lines in the y direction. -Type “12.5” for the spacing in the x direction and “12.5” for the spacing in the y direction. - Select “Simple Story Data” -Type “8” for the Number of Stories. -Type “9.5” for the Typical Story Height. -Type “14” for the Bottom Story Height. -Select the “Grid Only” button. - Click “OK” Plan View / 3D View. Your screen should show one window with a grid plan view of your model and one window with a grid 3D view of your model. Make sure the Kip-in is selected as your units in the lower right hand side of the window. Now is a good time to save your model, so click on the File/Save and find a suitable location for your file. 6 ksi. and 8 ksi concrete will be used. Click Add New Material… . The three materials will be defined in successive steps. 4 ksi. Next. we will define the materials used in the model.Define the Materials. Click Material Properties… from the Define pull down menu. Type 2.246E-7 for the Mass per unit Volume. Type 4 for f’c. Click OK . Select Concrete for the Type of Design. Type 3640 for the Modulus of Elasticity. Type 60 for fy Type 60 for fys. Type 0.680E-5 for the Weight per unit Volume.Define the 4 ksi concrete. Select Isotropic for the Type of Material. Type 8. Type CONC4 for the Material Name.5E-6 for the Coeff of Thermal Expansion.2 for Poisson’s Ratio. Type 5. Type 60 for fy Type 60 for fys.5E-6 for the Coeff of Thermal Expansion. Type 0. Select Concrete for the Type of Design.2 for Poisson’s Ratio. Click Add New Material… Type CONC6 for the Material Name. Type 4226 for the Modulus of Elasticity. Type 2.246E-7 for the Mass per unit Volume. Select Isotropic for the Type of Material.Define the 6 ksi concrete. . Type 8. Type 6 for f’c.680E-7 for the Weight per unit Volume. Type 5. Type 0.Define the 8 ksi concrete.2 for Poisson’s Ratio. Type 4720 for the Modulus of Elasticity.246E-7 for the Mass per unit Volume. Select Concrete for the Type of Design. Type 5. Type CONC8 for the Material Name. Type 2.680E-5 for the Weight per unit Volume. Type 8. Type 8 for f’c. Type 60 for fy Type 60 for fys.5E-6 for the Coeff of Thermal Expansion. . Select Isotropic for the Type of Material. we will define the concrete columns used in the model. Click Define/Frame Sections… from the pull down menu. 18x22 6 ksi. and 18x32 8 ksi columns will be used. The three concrete materials defined in the previous step will be used to define the columns. . Next.Define the columns. Select Add Rectangular. 14x22 4 ksi. Select A-GravCol from the Properties. Type 22 for Width.Define the 14x22 4 ksi column. Type 14 for the Depth. . Click OK. Select CONC4 as the Material. Type 14x22C4 as the Section Name. Let ETABS select the type of reinforcement for this model. Select Add Rectangular. The Define Frame Properties should still be visible. Select A-GravCol from the Properties.Define the 18x22 6 ksi column. simply click Frame Sections… from the Define pull down menu. If it is not visible. . Click OK .Continue defining the 18x22 6 ksi column. Type 18x22C6 as the Section Name. Let ETABS select the type of reinforcement for this model. Select CONC6 as the Material. Type 22 for Width. Type 18 for the Depth. . Select A-GravCol from the Properties.Define the 18x32 8 ksi column. simply click Frame Sections… from the Define pull down menu. If it is not visible. The Define Frame Properties should still be visible. Select Add Rectangular. Select CONC8 as the Material. Type 18 for the Depth.Continue defining the 18x32 8 ksi column. Type 32 for Width. Let ETABS select the type of reinforcement for this model. Click OK . Type 18x32C8 as the Section Name. define the concrete shearwalls used in the model. Click Wall/Slab/Deck Sections… from the Define pull down menu. The three concrete materials defined earlier in the tutorial will be used to define the shearwalls. 4ksi. . 8ksi shearwalls will be used. 6ksi. Next. Select Add New Wall from the Click to: menu.Define the Shearwalls. Select CONC4 as the Material.Define the 4 ksi shearwall. Select Shell as the Type. Type WallC4 as the Section Name. . Type 12 for the Bending Thickness. Type 12 for the Membrane Thickness. Click OK. Select Add New Wall from the Click to: menu. simply click Wall/Slab/Deck Sections… from the Define pull down menu.Define the 6 ksi shearwall. If it is not visible. The Define Frame Properties should still be visible. . Type 12 for the Membrane Thickness. Type 12 for the Bending Thickness. Type WallC6 as the Section Name. Select CONC6 as the Material. Select Shell as the Type. .Continue to define the 6 ksi shearwall. Click OK. If it is not visible. Select Add New Wall from the Click to: menu. simply click Wall/Slab/Deck Sections… from the Define pull down menu. The Define Frame Properties should still be visible.Define the 8 ksi shearwall. . Type 12 for the Membrane Thickness. . Type 12 for the Bending Thickness. Select Shell as the Type. Click OK. Select CONC8 as the Material. Type WallC8 as the Section Name.Continue to define the 8 ksi shearwall. Edit the story data and relationships. Select Edit Story Data from the Edit pull down menu. set up the story relationship to aid us in the development of the model. . Now. Relationships between stories are used to efficiently draw elements on similar stories. and STORY3 as a Master Story by selection Yes from the Master Story Column. Set STORY8. Set STORY7 as similar to STORY8. Set STORY5 and STORY4 as Similar to STORY6. Set STORY2 and STORY1 as Similar to STORY3. Click OK . STORY6.Continue to edit the story data and relationships. Now adjust the grid lines to remove the letter I to avoid confusing it with the number 1 and set additional gridlines.Adjust the grid. Select Edit Grid from the Edit pull down menu. . Click the Modify/Show System button on the Coordinate Systems dialog box. Select Kip-ft from the Units menu.5 as the Coordinate. Select X Grid from the Display menu. Replace the letter I with the letter J. Add a new gridline in the X Grid by typing A. .Adjust the X-grid.1 as the Grid ID and 6. 1 as the Grid ID and 6.Adjust the YGrid. Select Kip-ft from the Units menu. Add a new gridline in the Y Grid by typing 1. Select Y Grid from the Display menu. Click OK. Now is a good time to save your model. so click on the File/Save. .5 as the Coordinate. . Select Similar Stories from the pull down menu located near the bottom right hand corner of the ETABS screen.Activate the Similar Stories Command. Now activate the Similar Stories Command so that elements drawn on the master stories will be automatically drawn on similar stories . Click OK. Select Story 3 . . Click the Plan View button.Master the 3rd Story Plan View. Remember that we will place our elements on the master stories and ETABS will automatically replicate the elements on the similar stories. . Select the 18x32C8 columns. Click the Create Column button . . Select 18x32C8 from the Properties of Object dialog box. Place the columns as shown in the Plan View Window grid by left clicking the mouse. Notice that columns are automatically drawn on stories 1 and 2 as shown by the 3D View Window.Place the 18x32C8 columns. . Click the Plan View button. Remember that we will place our elements on the master stories and ETABS will automatically replicate the elements on the similar stories.Master the 6th story Plan View. Select Story 6 . Click OK . Select 18x22C6 from the Properties of Object dialog box. .Select the 18x22C6 columns. Click the Create Column button . Place the columns as shown in the Plan View Window grid by left clicking the mouse. Notice that columns are automatically drawn on stories 4 and 5 as shown by the 3D View Window. .Place the 18x22C6 columns. Click the Plan View button. . Remember that we will place our elements on the master stories and ETABS will automatically replicate the elements on the similar stories.Master the 8th story Plan View. Click OK. Select Story 8 . Select the 14x22C4 columns. . Click the Create Column button. Select the 14x22C4 from the Properties of Object dialog box. Notice that columns are automatically drawn on story 7 as shown by the 3D View Window.Place the 14x22C4 columns. Place the columns as shown in the Plan View Window grid by left clicking the mouse. . Select Story 3 . Remember that we will place our elements on the master stories and ETABS will automatically replicate the elements on the similar stories. We will now place the shearwalls for our model by using a procedure similar to the procedure used to place the columns. Click OK . Click the Plan View button.Master the 3rd story Plan View. Select the WALLC8 shearwall. . Click the Create Walls in Region button . Click the Snap to Node button to turn of the snap feature. This is done to allow you to click between nodes. Select WALLC8 from the Properties of Object dialog box. .1 and B to draw one portion of the wall.Place the 8 ksi shearwalls. Notice that shearwalls are automatically drawn on stories 1 and 2 as shown by the 3D View Window. Use this procedure to draw all portions of the shearwalls. Place the shearwalls as shown in the Plan View Window grid by left clicking the mouse between intersecting points. For example. click the point that is along line 6 between line A. Click the Plan View button. Select Story 6 .Master the 6th story Plan View. Click OK . Remember that we will place our elements on the master stories and ETABS will automatically replicate the elements on the similar stories. Select the WALLC6 shearwall. Select WALLC6 from the Properties of Object dialog box. . Click the Create Walls in Region button . 1 and B to draw one portion of the wall. For example. Place the shearwalls as shown in the Plan View Window grid by left clicking the mouse between intersecting points. click the point that is along line 6 between line A. . Use this procedure to draw all portions of the shearwalls. Notice that shearwalls are automatically drawn on stories 4 and 5 as shown by the 3D View Window.Place the 6 ksi shearwalls. Remember that we will place our elements on the master stories and ETABS will automatically replicate the elements on the similar stories. Select Story 8 . Click OK. . Click the Plan View button.Master the 8th story Plan View. Select the WALLC4 shearwall. Select WALLC6 from the Properties of Object dialog box. Click the Create Walls in Region button . . Notice that shearwalls are automatically drawn on story 7 as shown by the 3D View Window. For example.Place the 4 ksi shearwalls. Use this procedure to draw all portions of the shearwalls. . click the point that is along line 6 between line A. Place the shearwalls as shown in the Plan View Window grid by left clicking the mouse between intersecting points.1 and B to draw one portion of the wall. Select the Set Building View Options… from the View pull down menu. Now adjust the model to view options. Click OK. Click the Object Fill and Extrusion check boxes. Now is a good time to save your model. . so click on the File/Save.Set the Building View Options. Then restart ETABS to get the updated view.3D Model View The 3D view of your model should have extruded filled-in elements. Now is a good time to save your model. . so click on the File/Save. Sometimes view changes are not updated automatically. You may have to save the file and exit ETABS.