Chapter 20 • Importing and Coordinating Revit Models 864 FIGURE 20.23 Publishing the coordinates 3. In the Site tab of the Location Weather and Site dialog, click the Duplicate button. 4. Call the new location Revit Position, then click OK. 5. Click Make Current. 6. Click OK. 7. Press Esc, then select the AutoCAD link. 8. In the Properties dialog, verify that the Shared Site is now Revit Position. 9. Save the Revit model. 10. Once you save the Revit model, you will be prompted to save the new coordinates in the DWG. Click the Save button, as shown in Figure 20.24. So, that’s importing. Suppose we need to send our model to our clients and con- sultants who don’t have Revit? This can be taken care of quickly and deliberately. Exporting a Model to CAD For some of you, this may be a nice-to-know subject. For most of you, this is a need-to-know subject. Taking the plunge into Revit means that you may be tak- ing that plunge alone. Just because you are using Revit, that does not mean you don’t need the ability to give someone CAD drawings based on your models. This section will focus on the process of exporting your Revit model to both 2D and 3D CAD. Importing and Exporting CAD Formats 865 FIGURE 20.24 Saving the coordinates to the AutoCAD file Exporting a 2D Model Most of the time, your deliverable to your clients will be a 2D model. Also, if your consultants aren’t on Revit, that also usually means that they are not using 3D CAD either. This format is the lowest common denominator. Not that a 2D model is bad—it just means we need to export our model in a way that the client can just pick it up and run with it. The objective of the next procedure is to export our model to a 2D AutoCAD drawing file. 1. In the Project Browser, open the Level 1 floor plan. 2. Click the Application button, and select Export ➢ CAD Formats ➢ DWG Files, as shown in Figure 20.25. 3. On the View/Sheet Set panel, select In Session View/Sheet Set from the Export drop-down list. 4. For the Show In List option, select All Views And Sheets In The Model. 5. Scroll down to the bottom of the list and make sure your Level 1 floor plan is checked on (see Figure 20.26). You may check on any others as you please. 6. Click the DWG Properties tab. 7. At the bottom, click Export Rooms And Areas As Polylines. 8. Click the Next button. 9. Browse to the directory of your choosing then click OK. Chapter 20 • Importing and Coordinating Revit Models 866 FIGURE 20.25 Exporting the model to CAD FIGURE 20.26 Choosing the items to export Are You Experienced? 867 Now that we can export to a flat 2D file, it is time to take our model and export it as a full 3D entity. The process is similar to exporting as 2D. Exporting the Model to 3D CAD It is such a shame to “dumb down” our 3D model to flat 2D CAD. It feels as though we are taking a step backward each time we do it. When you find yourself in the situation where your consultants are using CAD but are using the 3D modeling, you can give them the gift of 3D. The objective of the next procedure is to export a model to 3D CAD. 1. Go to the Default 3D view. 2. Select Export ➢ CAD Formats ➢ DWG Files. 3. Set the Export option to Current View/Sheet Only. 4. Click the Next button. 5. Find a place to save the 3D model, then click OK. 6. Save the model. As you can see, it’s not a difficult process. In Chapter 23, “BIM Management,” we will explore setting up the export in such a way that the layers are correct if your client is not standardized on the AIA format. Are You Experienced? Now You Can… import a Revit Structure model copy and monitor the Revit model run interference checking on a linked Revit model export a Revit model to CAD formats (2D and 3D) O The most important step in exporting to a 3D CAD format is to be in a 3D view. CHAPTER 21 Phasing and Design Options Of all the projects I have been involved with over the years, I can only remember a handful that didn’t involve some kind of existing condition. It would be nice if we could find a giant, flat field to construct our buildings, but those projects are few and far between. Managing project phasing Creating an existing phasing plan Demolishing components Examining phase filters Creating design options Chapter 21 • Phasing and Design Options 870 Managing Project Phasing The term phasing in Revit is often taken quite literally, and can often become confused as construction sequencing. When we talk about phasing in the con- text of how Revit views it, we are talking about adding new construction to an existing building, and the demolition of the existing structure. Although you can use Revit to track all aspects of construction, the base use and the purpose of phasing is for existing conditions. The first section of this chapter will focus on the setup of your actual phasing scheme. By default, Revit Architecture provides two phases: Existing and New Construction. As it stands, everything we have placed into our model for the last 20 chapters has been exclusively on the New Construction phase. We will now alter that. I have seen this scenario played out more times than I would like. People get Revit, build a model, and then start clicking the Demolish button found on the Phasing panel on the Modify tab, as shown in Figure 21.1. Yes, it forces hidden lines, now you are demolishing walls that were constructed in the same phase as they are being removed. You can’t just do that! With some practice, and by following the procedures in this chapter, you will be able to swing that hammer around all you want. But for now, to get started go to the book’s web page at www.sybex.com/go/revit2011ner. From there you can browse to Chapter 21 and find the file called NER-Phasing.rvt. (If you pre- fer, you can follow along with your own model as well.) The objective of the following procedure is to create a demo phase and insert that phase between the Existing phase and the New Construction phase. 1. Open the file called NER-Phasing.rvt you downloaded. 2. On the Manage tab, click the Phases button on the Phasing panel, as shown in Figure 21.1. 3. In the Phasing dialog, click on the number 1. This is the control for the Existing phase row. 4. To the right of the dialog is the Insert section. Click the After button. FIGURE 21.1 Clicking the Phases button Managing Project Phasing 871 5. Rename the phase that is now in the middle to Demolition, as shown in Figure 21.2. 6. Click OK. 7. Make sure you are in Level 1; then on the View tab, click Duplicate View ➢ Duplicate View, as shown in Figure 21.3. 8. Right-click the new view and rename it to Level 1 Existing. 9. Open the Level 1 Existing plan. For now, that is all we need to do to start setting up the plans. We will create a demo plan as well, but not until we start getting some items moved over to the Existing phase. FIGURE 21.2 Adding the Demolition phase FIGURE 21.3 Duplicating the view Chapter 21 • Phasing and Design Options 872 Creating an Existing Phasing Plan Just because you just called it “existing” does not, by any means, qualify this plan as an existing plan. We have a good amount of work left to do before we can con- sider this existing. First we need to physically select each item and move what we want over to the Existing phase. After we finish that task, we need to assign the Existing phase to this plan. The objective of the following procedure is to physically move components to the Existing phase: 1. Pick a window around the entire west wing as well as the corridor link, as shown in Figure 21.4. 2. On the Modify | Multi-Select tab, click the Filter button, as shown in Figure 12.4. 3. In the Filter dialog, click the Check None button, and then check Walls. FIGURE 21.4 Filtering your selection Creating an Existing Phasing Plan 873 4. Click OK. 5. In the Properties dialog, scroll down to the bottom where you see Phasing. For Phase Created, select Existing (see Figure 21.5). 6. Pick the same window around the entire east wing. 7. Click the Filter button. 8. Select only Windows and click OK. 9. In the Properties dialog, change Phase Created to Existing. Zoom in on the plan. Notice the items that have been moved to Existing are gray and have lost their detail level, as shown in Figure 21.6. Also notice that some of the items are still on a heavy line weight. These items need to be selected and then moved to the Existing phase. FIGURE 21.5 Setting Phase Created to Existing Keep selecting items and moving them to the Existing phase. Continue until you have every item in the east wing and the corridor link. This includes the floors and foundations, too. The only thing you want to keep is the winding stairs that con- nect the link to the east wing. You can select items in the 3D view as well. Okay, it’s time to create the existing plan. The only thing that separates an existing plan from a new construction plan is a single property. . most of you, this is a need-to-know subject. Taking the plunge into Revit means that you may be tak- ing that plunge alone. Just because you are using Revit, that does not mean you don’t need. AIA format. Are You Experienced? Now You Can… import a Revit Structure model copy and monitor the Revit model run interference checking on a linked Revit model export a Revit model to CAD. to our clients and con- sultants who don’t have Revit? This can be taken care of quickly and deliberately. Exporting a Model to CAD For some of you, this may be a nice-to-know subject. For most