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In this lesson we will continue modifying the geometry to prepare it for export to gbXML. Continue with the previous file or open the file Racgbs 02 Geometry M Progress. Next, we will place a room in the elevator shaft. Click the Home Tab and from the Room and Area Panel, click the Room Drop-Down and select Room. On the Options Bar, Clear Tag on Placement and for Upper Limit, select Roof. Then click in the elevator shaft space to place the room. Then click Modify. Next we will verify shading devices in the model. Open the 3D View. When shading is important to the energy modeling of a building, it is important to model the shading devices with a family that can be room bounding. Typically this means that shading devices need to be modeled as floors, ceilings or roofs. These families, when placed without adjacent spaces, are considered shading surfaces. To verify that the shading devices in this model are created correctly, zoom in closer to the model and select one of the horizontal planes on the exterior side of the building. In the Type Selector, notice that the shading device is modeled with a floor object and will be calculated as a shading device. The support condition of this shade is not modeled because the scale and size of the support would not significantly impact the analysis. Click in an open area or press Escape. Next, we will specify Non-Room Bounding for Columns. Open the Entry Level Floor Plan View and zoom into the columns. Then select a column. Then select Instance Properties and under Constraints, Clear Room Bounding and click OK. Next, with the column selected, right click and select Select All Instances, go back to Instance Properties and Clear Room Bounding and click OK. Here's an important note. You should remember to switch on the Room-Bounding Property for the columns after the gbXML export process is complete to ensure the correct area calculations for rooms. Next, we will look at creating exterior slabs. The floor slabs in the model are placed generically. By default, floors are assumed to be interior objects. To ensure the best results during analysis, you should specifically define floor objects as exterior as required. Open the Section 1 Building Section View. Then select the Entry Level Floor Object. Make sure you use the Tab Key and check the Status Bar to make sure you select the floor and not the topography. Then from the Element Properties Drop-Down, select Type Properties. In the Type Properties Dialog, click Duplicate. In the Main Dialog, enter Generic 150 millimeter Exterior and click OK. Then in the Type Properties Dialog, under Construction for Function, select Exterior and click OK. Now the building model is prepared for export to gbXML or for upload to Green Building Studio. Next, we will export to gbXML. Click the Menu Browser and then move to Export and select gbXML. In the Export gbXML Dialog, you can visually adjust the analytical model for potential problems before exporting to gbXML. Click the Details Tab and select Analytical Surfaces. Then click Export. Then click Save. The resulting gbXML file can then be imported into an analytical software package, such as Autodesk Green Building Studio. Close the file as that concludes this lesson.