Chapter 6 • Floors 274 4. Now that the floor is selected, notice on the Modify | Floors tab that you have several choices. Click the Add Split Line button (see Figure 6.46). 5. Draw lines along the finished inside face of the lavatory, as shown in Figure 6.46. As always, there can be no gaps or overlaps. NOTE Yes, it is true that the snapping feature is tedious at best when you’re using the Split Line command. Be patient. You will need to basically get as close to the face of the wall as possible before you pick the point. This is one case where you will need to eyeball the exact pick points. FIGURE 6.46 Drawing a split frame around the inside of the lavatory With the split lines drawn, you have isolated the lavatory area from the rest of the floor. Now you can pitch the floor in this area without affecting the rest of the floor. The pitch will extend only as far as the split lines. To create a drop in the floor, follow these steps: 1. On the Home tab, select the Model Lines button, as shown in Figure 6.47. 2. Draw the line from the midpoint of the restroom’s right wall, to the left 3 ′–0″, as shown in Figure 6.47. Pitching a Floor to a Floor Drain 275 FIGURE 6.47 Drawing a line to establish the point where the floor will slope to 3. Press Esc twice. 4. Select the floor. (Remember the Filter dialog.) 5. On the Modify | Floors tab, select the Add Point button, as shown in Figure 6.48. 6. Pick the endpoint of the line you just drew, as shown in Figure 6.48. 7. Press Esc once. This will put you in the Modify Sub Elements mode. You will know you are in this mode by the icon next to your pointer, as shown in Figure 6.49. 8. Pick the point you just placed into the model. It will turn red, and a blue elevation will appear. As you know, any blue item is modifiable. Click the 0 ′–0″ value, and change it to –1″ (negative one inch). 9. Press Enter. Revit will drop that area of the floor and add the slope lines as if you drafted them in. 10. Press Esc twice. 11. Delete the line you drew as a guideline. Chapter 6 • Floors 276 FIGURE 6.48 Picking the endpoint of the line FIGURE 6.49 Dropping the elevation of the drain down 1″ from the surface of the floor 12. Save the model. See Figure 6.50: does your floor look like this? If not, go back and see where you went wrong. Pitching a Floor to a Floor Drain 277 13. Repeat the steps to add a pitch to the lavatory north of the corridor. 14. Save the model (see Figure 6.51). FIGURE 6.50 The final slab in the restroom FIGURE 6.51 Both lavatories are now pitched and ready to have fixtures added. Chapter 6 • Floors 278 Now that you have experience in creating and placing floors, as well as being able to pitch a floor in a specific area, it is time to look at one more item: shaft openings. C a n i er a s e thi s a n d st a r t ov e r ? Often you may just need to clear the entire slab and start again. You can do this simply by selecting the floor and clicking the Reset Shape button on the Options bar, as shown in the following image: Creating Shaft Openings To create a shaft opening, you just create a void through your model. This void, however, can conform to walls that are set in the model. The elevator shaft walls, for instance, will define the outside edge of our shaft opening. You may notice that the floors we added to the model are indiscriminately running unin- terrupted straight through the shafts. We need to void the floor. Also, the good thing about creating a shaft opening is that if we create another floor, the shaft will be cut out automatically. To get started, open the file you have been following along with. If you did not complete the previous procedure, go to the book’s web page at www.sybex.com/ go/revit2011ner. From there you can browse to Chapter 6 and find the file called NER-21.rvt. First, we need to create two more levels. We need a subterranean level (T.O. Footing) and a penthouse level to extend the elevator shaft up through: 1. In the Project Browser, go to the South elevation. Creating Shaft Openings 279 2. On the Datum panel of the Home tab, click the Level button. 3. On the Draw panel, click the Pick Lines icon, and set an offset of 10 ′–0″ (see Figure 6.52). 4. Hover your cursor over Level 1. Make sure the alignment line is below Level 1. When you see the alignment line, pick Level 1. You now have a new level at –10 ′–0″. 5. Click the Modify button on the Select panel to terminate the command. 6. Pick the level that is set to –10′–0″ and rename it to T.O. Footing (see Figure 6.52). 7. Click Yes when Revit prompts you to rename corresponding views. FIGURE 6.52 Adding a new Top Of Footing level The next step is to select the CMU elevator shaft walls and modify their prop- erties so that the bottoms are extended down to the top of the footing and the tops are extended to the penthouse level: 1. Go to a 3D view. Chapter 6 • Floors 280 2. Select all of the CMU walls. Remember to press and hold the Ctrl key as you select the walls. 3. In the Properties dialog, under the Constraints category, set Base Constraint to T.O. Footing, as shown in Figure 6.53. 4. Click OK. FIGURE 6.53 In the Properties dialog, change Base Constraint to T.O. Footing. With the bottom established at the correct level, it is time to add the shaft: 1. Go to the Level 1 floor plan (note that it does not matter which floor you are actually in when you place a shaft opening). 2. On the Home tab, click the Shaft Opening button in the Opening panel. as shown in Figure 6.54. 3. On the Modify | Create Shaft Opening Sketch tab, click Pick Walls, as shown in Figure 6.55. 4. Pick the walls shown in Figure 6.55. Notice that you can have more than one shaft opening in the same command. 5. Use the Line button on the Draw panel to draw the line across the inside face of the exterior wall. 6. Use the Trim command to clean up any corners (see Figure 6.55). To select all of the CMU walls, you can simply select only one, right-click, and then click Select All Instances. Be care- ful, though; if there are other CMU walls of the same type in the model, they will become selected as well. Creating Shaft Openings 281 FIGURE 6.54 Selecting the Shaft Opening command from the Home tab FIGURE 6.55 Adding the magenta lines to form the shaft opening to the outside of the CMU walls Chapter 6 • Floors 282 Now that the perimeter has been established, it is time to establish which floors this opening will extend to. Just because we picked the CMU walls, this does not mean that a base and a top height have been established. 1. In the Properties dialog , make sure Shaft Openings is selected, as shown in Figure 6.56. 2. In the Properties dialog, set Base Constraint to T.O. Footing. 3. Set Top Constraint to Up To Level: Roof. 4. Set Top Offset to –1 ′–0″ (this keeps the roof from having two giant square holes in it). 5. Click Apply. Figure 6.56 shows the settings. FIGURE 6.56 Setting the properties of the shaft opening 6. On the Modify | Create Shaft Opening Sketch tab, click the Symbolic Line button. This will allow you to sketch an opening graphic into the shaft. 7. Draw an “X” in both openings, as shown in Figure 6.57. 8. Click Finish Edit Mode. Creating Shaft Openings 283 Notice the floor is now voided from the openings. Go to a 3D view and look down the shafts. They are wide open, as shown in Figure 6.58. NOTE A shaft opening will only void floors and roofs. Any other geometry such as walls and structural framing will not be voided. You need to modify these elements on a piece-by-piece basis. FIGURE 6.57 You can add any “drafting” symbolic lines you deem necessary. Now that you know how to pitch floors, you can begin using Revit for its unique capabilities. Also, you are better prepared to move into the next chapter, which focuses on creating roofs. . framing will not be voided. You need to modify these elements on a piece-by-piece basis. FIGURE 6.57 You can add any “drafting” symbolic lines you deem necessary. Now that you know how to pitch. procedure, go to the book’s web page at www.sybex.com/ go /revit2 011ner. From there you can browse to Chapter 6 and find the file called NER-21.rvt. First, we need to create two more levels. We need. Mode. Creating Shaft Openings 283 Notice the floor is now voided from the openings. Go to a 3D view and look down the shafts. They are wide open, as shown in Figure 6.58. NOTE A shaft opening will