Chapter 8 • Structural Items 344 5. When you pick the wall, the grid is added. It will not be the name or number you want. We will change that. But first, pick the round blue grip and drag the bubble up past the dimensions, as shown in Figure 8.15. 6. Press Esc. 7. Select the new vertical grid. 8. Click in the bubble and rename it to A, as shown in Figure 8.16. FIGURE 8.15 Dragging the new bubble out of the wall FIGURE 8.16 The grid is now named A. Structural Grids 345 It is now time to duplicate this grid. Since you have an arsenal of modify com- mands under your belt, the best way to duplicate this grid is to copy it, as shown in the following steps: 1. Select grid A. 2. On the Modify | Grids tab, click the Copy button, as shown at the top and center of Figure 8.17. 3. On the Options bar, make sure the Multiple checkbox is selected, as shown near the top left of Figure 8.17. 4. Pick a base point along the grid line within the wall, as shown in Figure 8.17. 5. Copy grid A to the wall centerlines, as shown in Figure 8.17. Notice that the grid lines will autosequence as you go. FIGURE 8.17 Copying the grid line to the other walls 6. Press Esc twice. 7. Start the Grid command again. 8. On the Draw panel, be sure the Line button is selected. 9. Pick a start point at the endpoint of the radial wall where it intersects with the straight wall, as shown near the bottom of Figure 8.18. 10. Pick the second point in line with the adjacent grid bubbles (see Figure 8.18). Chapter 8 • Structural Items 346 11. Press Esc. 12. Pick the grip on the bottom of the line, and drag it down past the south part of the radial wall. The next step is to add the grid to the radial entry area. This will not be as easy as simply picking a wall’s centerline. The trick here will be to establish a reference point to place the grid and, subsequently, a column. FIGURE 8.18 Adding grid F Adding a Radial Grid Line Sometimes, you have to think outside the box. Literally. Since we have radial geometry to contend with, we need to add a radial grid, as follows: 1. Zoom in on the radial entry of the east wing. 2. Click the Grid button on the Home tab. 3. On the Draw panel, select the Line button, as shown in Figure 8.19. 4. Type in an offset of 6 ″ on the Options bar. 5. Pick the finished inside face of the radial wall, as shown in Figure 8.19. 6. The actual grid bubble lands in a congested area. Fix this by adding an elbow and adjusting the bubbles, as shown by grid G near the top of Figure 8.20. Structural Grids 347 I think you get the picture on adding grids. The next procedure is to start add- ing columns to these grid intersections. To do so, we will explore the Structure tab on the Ribbon. FIGURE 8.19 Adding a grid line offset from the finish inside face FIGURE 8.20 Adding bubbles to the radial grid line and adjusting their placements with elbows Chapter 8 • Structural Items 348 Adding Structural Columns The hard part is over. Determining where to put the columns is harder than physi- cally placing them in the model. But of course there are rules to follow, and rules that need to be bent in order to accomplish the results we want to see. This next series of procedures will include adding structural components to the model and placing framing systems in areas where a structural engineer may defer to the architect for structural integrity given their design intent. To begin, open the file you have been following along with. If you did not complete the previous section, go to the book’s web page at www.sybex.com/go/ revit2011ner. From there you can browse to Chapter 8 and find the file called NER-24.rvt. To add columns to the model, follow this procedure: 1. In the Project Browser, go to the Level 1 floor plan. 2. Zoom into the radial entry area in the east wing. 3. On the Structure tab, click Column ➢ Structural Column, as shown in Figure 8.21. FIGURE 8.21 The Structural Column button on the Structure tab of the Ribbon 4. You will probably not have any structural columns loaded into the model. If you get the message shown in Figure 8.22, click Yes to browse for a structural column. 5. Browse to Imperial Library ➢ Structural ➢ Columns ➢ Steel. 6. In the Steel folder, browse to HSS-Hollow Structural Section -Column.rfa . Adding Structural Columns 349 7. Double click on HSS-Hollow Structural Section-Column.rfa; you will see a dialog allowing you to select the type, as shown in Figure 8.23. 8. Select the HSS6×6×5/8 column. FIGURE 8.22 You’ll see this message when no columns are loaded in the model. Click Yes. FIGURE 8.23 S e l e c t HSS-Hollow Structural Section-Column.rfa and choose the HSS6 ×6×5/8 type. 9. Click OK. 10. On the Options bar, make sure Height is set to Roof, as shown in Figure 8.24. 11. Place the column on the grid intersection F-1. 12. Press Esc twice. 13. Click the Column ➢ Structural Column button on the Home tab. 14. Place a column at grid intersection F-2. Before you place this column, be sure Height is set to Roof. 15. Place another column at grid intersection F-G (see Figure 8.25). 16. Select the column on the inside of the building (Column F-G). Once the column is in place, press Esc twice to release the command. Chapter 8 • Structural Items 350 FIGURE 8.24 Placing the column on grid intersection F-1 FIGURE 8.25 Placing the two additional columns 17. In the Properties dialog, make sure that the top level is set to Up To: Roof, as shown in Figure 8.26. Adding Structural Columns 351 FIGURE 8.26 Setting the column’s Top Level to extend to the roof NOTE Notice that Column Location is set to F-G. This is important because if the column is offset from one of these lines, Revit will still con- sider the column to be at that column location but with an offset dimension. 18. Mirror the three columns to the opposite side of the entry using col- umn line 3 as the reference plane. 19. Save the model. It’s time to start adding some full-height columns at the rest of the grid loca- tions. You will begin with the radial grid, and then place the rest of the columns in the walls of the exterior and the corridor: 1. On the Structure tab, click the Column ➢ Structural Column button. 2. On the Options bar, be sure Height is set to Roof. 3. Hover your cursor over grid intersection G-2.1. Notice that you can see the column, but it is at the wrong orientation. 4. Press the Tab key on your keyboard, and the column will rotate to align with the grid, as shown in Figure 8.27. 5. When the column is aligned, pick the intersection. The column is placed. 6. Repeat the steps for columns 3 and 3.9. Chapter 8 • Structural Items 352 FIGURE 8.27 Placing a column at an angle It’s time now to start placing columns in the main part of the wing. Place a column at every grid location. Note that you must stretch the column lines to the left side of the wing. You should also turn the grid bubbles on at the west and south sides of the building, as shown in Figure 8.28. FIGURE 8.28 The grids should be extended and the bubbles turned on at each end. Since you rotated the first column, notice that as you follow the radius the column rotates on its own.  Adding Structural Columns 353 To add columns by intersection, follow these steps: 1. Start the Structural Column command. 2. On the Modify | Place Structural Column tab, click the At Grids but- ton on the Multiple panel, as shown in Figure 8.29. FIGURE 8.29 Using the “Place Column At Grids” function 3. Pick a window around the rectangular portion of the east wing (from right to left), as shown in Figure 8.30. 4. Notice the Modify | Place Structural Column ➢ At Grid Intersection tab now changes to allow you to either finish or cancel. Once you have the window placed, click the Finish button on the Multiple panel, as shown at the top of Figure 8.30. 5. Press Esc. FIGURE 8.30 Picking a window where the columns will be placed . to extend to the roof NOTE Notice that Column Location is set to F-G. This is important because if the column is offset from one of these lines, Revit will still con- sider the column to be. In the Steel folder, browse to HSS-Hollow Structural Section -Column.rfa . Adding Structural Columns 349 7. Double click on HSS-Hollow Structural Section-Column.rfa; you will see a dialog. with. If you did not complete the previous section, go to the book’s web page at www.sybex.com/go/ revit2 011ner. From there you can browse to Chapter 8 and find the file called NER-24.rvt. To add