Autodesk Revit Architecture 2011 No Experience Required - part 33 doc

Chapter 7 • Roofs 294 FIGURE 7.8 Adding two points FIGURE 7.9 Drawing a new ridge from the two points shown Placing Roofs by Footprint 295 13. On the Annotate tab, click the Aligned Dimension button. 14. Add a dimension string starting at the exterior wall to the left and ending at the exterior wall to the right, as shown in Figure 7.10. FIGURE 7.10 Add a dimension string to the reference planes shown here. 15. Click the blue EQ icon. This will equally constrain the reference planes. 16. Press Esc twice to terminate the command. 17. Select the roof. 18. Click the Add Split Line, as shown in Figure 7.11. 19. Draw four ridges at the intersections of the reference planes, as shown in Figure 7.11. 20. Press Esc. 21. On the Annotate tab, click the Detail Line button, as shown at the top of Figure 7.12. 22. Draw a diagonal line from the two points shown in Figure 7.12. Chapter 7 • Roofs 296 FIGURE 7.11 The ridges are in. All that is left is to create some points and start tapering the roof. 23. Press Esc, and then select the roof. 24. Click the Add Point button. 25. Pick the midpoint of the diagonal line. 26. Press Esc twice to clear the command. 27. Select the roof. Notice there is a node where you picked the point. To access the node, click the Modify Sub Elements button on the Shape Editing panel, as shown in Figure 7.13. 28. Pick the point that you just added. Notice there is a blue elevation that shows up, as shown in Figure 7.14. Click the elevation, and type –3 ″. 29. Press Esc twice. This process will taper the insulation only in this bay, as shown in Figure 7.15. The objective now is to do the same thing for every bay. Because you cannot copy a point, you need to move the temporary line to the next bay and add a new point. Placing Roofs by Footprint 297 FIGURE 7.12 Add a temporary line, then pick a point to pitch the insulation to. Note there is a section marker in the illustration. We will be adding that in a moment. FIGURE 7.13 Click the Modify Sub Elements button to gain access to the points on the roof. Chapter 7 • Roofs 298 FIGURE 7.14 Click the point to taper the roof to this point. FIGURE 7.15 The taper is in place. Follow along to create another taper: 1. Move the diagonal line (that you drew as a reference) to the next bay to the right. 2. Select the roof. 3. Click Add Point. 4. Click the Modify Sub Elements button, and add a point to the midpoint of the line. Placing Roofs by Footprint 299 5. Type –3″ in the blue elevation. The roof tapers. 6. Move the line to the next bay and repeat the process. NOTE Remember as you are adding additional lines in this section that I am merely recommending that you use the Move tool. At this point, you have enough experience to either draw the lines in or use any tool you have learned up to this point. 7. Complete every bay. 8. Add points to the radial area as well. 9. Your roof should look like Figure 7.16 when you have finished. FIGURE 7.16 The completed roof To further investigate how this roof works, and to see the benefits of this approach rather than drafting the lines in, let’s cut a section through the roof and see how the detail will look: 1. On the Create panel of the View tab, click the Section button. 2. Add a section through the roof, as shown in Figure 7.17. 3. In the Properties dialog, change View Scale to 3/4 ″ = 1′–0″. Chapter 7 • Roofs 300 FIGURE 7.17 Adding a section through the roof at this point. 4. Change Detail Level to Fine. 5. Change the View Name option (under Identity Data) to Roof Taper Section (see Figure 7.18). 6. Click Apply. 7. Double-click on the section head (or you can find the section called Roof Taper Section in the Project Browser). 8. Adjust the crop region so you are looking only at the roof area, as shown in Figure 7.19. This concludes modeling a flat roof. We can now move on to creating a pitched roof. Again, although these types of roofs can be easy to add in the beginning, more work will be required to get them exactly the way you want them. Placing Roofs by Footprint 301 FIGURE 7.18 Changing the properties of the section FIGURE 7.19 By adding the points to the roof, you now have an almost perfect section. th e pr o o F is in th e ro o F ! This is a perfect example of why the Revit approach to design documentation is the way to go. Although the sloping of the slab may have seemed tedious, in reality it didn’t take much longer than if you had drafted those lines in a CAD application. But now, to produce a section, all you need to do is cut one. Also, if you change the location, or the depth of the roof pitch, your lines in plan will be accurate, as will your section. Chapter 7 • Roofs 302 Pitched Roofs by Footprint We’ll add a pitched roof in an identical manner in which we added the flat roof. The only real difference is that each magenta sketch line will need more atten- tion before you finish the sketch. But, after tapering the roof’s insulation, this will be a cakewalk. We will place the pitched roof over the corridor. The problem with the cor- ridor is that we used a wall system with a parapet cap. This is not the best wall system to receive a pitched roof. First we will change to a simpler wall system: 1. Go to a 3D view of the model. 2. Select the six corridor walls, as shown in Figure 7.20. FIGURE 7.20 Select the six walls to be modified. 3. On the Modify | Walls tab, click the Type Properties button. 4. Click the Duplicate button. 5. Call the new wall system Exterior - Brick and CMU on MTL. Stud (No Parapet). 6. In the Structure row, click the Edit button. 7. In the Edit Assembly dialog, make sure the Preview button has been checked, as shown at the bottom of Figure 7.21. 8. Click the Sweeps button, as shown in Figure 7.21. 9. In the Wall Sweeps dialog, you will see three sweeps. The top sweep is the parapet cap. Select sweep 1 (Parapet Cap), and click the Delete button, as shown in Figure 7.22. Placing Roofs by Footprint 303 10. Click OK three times. 11. Click OK one more time to get back to the model. Your corridor walls should look exactly the same but are now void of the con- crete parapet cap. FIGURE 7.21 Without the preview checked on, you will not be able to modify the parapet sweep. FIGURE 7.22 Deleting the Parapet Cap sweep . 26. Press Esc twice to clear the command. 27. Select the roof. Notice there is a node where you picked the point. To access the node, click the Modify Sub Elements button on the Shape Editing. repeat the process. NOTE Remember as you are adding additional lines in this section that I am merely recommending that you use the Move tool. At this point, you have enough experience to either. adding the points to the roof, you now have an almost perfect section. th e pr o o F is in th e ro o F ! This is a perfect example of why the Revit approach to design documentation is the way to go.