Export Drawings From Revit to Autocad

Revit Architecture supports exporting to CAD (DWG and DXF), ACIS (SAT), and MicroStation® (DGN) file formats.

• DWG (drawing) format is supported by AutoCAD and other CAD applications.

• DXF (data transfer) is an open format that is supported by many CAD applications. A DXF file is a text file that describes a 2D drawing.

• SAT is the format for ACIS, a solid modeling technology that is supported by many CAD applications.

• DGN is the file format supported by MicroStation of Bentley Systems, Inc.

TIP: Before exporting, reduce the amount of model geometry to be exported to be able to improve the performance and reducing clutter in the exported file.

To Export a REVIT view to a CAD file:

1. Click Application Menu -> Export -> CAD Formats -> DWG. The Export CAD Formats dialog opens.

2. Determine which views and sheets are to be exported to the DWG file.

3. To specify export options, click the DWG Properties tab of the Export CAD Formats dialog. The following options are available:

1. Layers and Properties (Choose one of the below mentioned options).

• Category properties BY LAYER, overrides BYENTITY:

All walls in this Revit category, including the dash wall in above example, are assigned to one layer in AutoCAD. The dash wall, however, retains its unique attributes (dashed, line weight = 7) because AutoCAD defines them by entity for that wall.

• All properties BY LAYER, no overrides: All walls in this Revit category, including the dash wall, are assigned to one layer in AutoCAD, and the dash wall does not retain its unique characteristics. In AutoCAD, it looks the same as the other walls in the layer.

• All properties BY LAYER, new layers for overrides: All walls in this Revit category, except for the dash wall, are assigned to one layer in AutoCAD. The blue wall retains its unique attributes, but it is assigned to its own layer.

2. Line-type Scaling (Select one of the following issues)

• Scaled Line-type definitions. This option exports line-types the same as they were previously scaled by view scale. This option preserves graphical intent.

• Modelspace (PSLTSCALE = 0). This option specifies the LTSCALE parameter to view scale and the PSLTSCALE to 0.

• Paperspace (PSLTSCALE = 1). This option specifies the value 1 for both LTSCALE and PSLTSCALE. Revit Architecture line-type definitions are scaled to reflect project units, but otherwise they are exported as it is.

3. Solids (for 3D Views Only)

• ACIS is a solid modeling technology. For example, ACIS represents a cube as a single object or a solid shape with 6 sides.

• A polymesh is a 3D shape consisting of multiple polygons that are meshed (joined) together. For example, a polymesh cube consists of 6 square surfaces that are joined together to form the cube shape. This is referred to as face-based geometry. It is not a solid.

4. Click Export.

Note: Click OK to save the current export settings and close the dialog without exporting.

5. Navigate to the target folder for the exported files.

6. Select an AutoCAD version of the exported DWG file from the Files of type list.

7. Select Automatic - Long (Specify prefix) or Automatic - Short from the Naming list to define the automatically generated file name.

8. Click Export.

9. Revit Architecture exports the selected views and sheets to DWG files and places them in the target folder.

Exporting Layers

When exporting a project to another format (such as DWG or DGN), you want the exported file to contain as much information about the project as possible. Revit Architecture stores a wealth of project information in its categories and subcategories. In CAD software, this type of information is stored in layers. To ensure that information about Revit categories is properly converted to CAD layer names, use the Export Layers tool to define a layer mapping file.

The layer mapping file is a text file that maps each Revit category or subcategory to a preconfigured layer name for the CAD software. For example, a Revit door object automatically maps to A-DOOR layer in AutoCAD. The layer names are preconfigured in the text file, but you can change them.

You can load an existing layer mapping file and manually change values for it, or you can generate a file using any of the following mapping standards:

• American Institute of Architects (AIA)

• ISO standard 13567

• Singapore standard 83

• British standard 1192

To customize the layer mapping file:

1. Click Application Menu -> Export -> Options -> Export Layers DWG/DXF (for AutoCAD) or Export Layers DGN (for MicroStation).

2. In the Export Layers dialog, Revit Architecture displays values from a layer mapping file, using the appropriate standard for the current locale.

3. If you want to use a different standard or edit an existing mapping file, do one of the following:

• To load an existing mapping file, click Load, navigate to the file, and click Open.

• To create a new mapping file, click Standard, select a standard from the dialog, and click OK.

4. Edit mapping values as desired.

5. To change a Cut or Projection value, click in the Layer Name or Color ID column for the appropriate category and enter the new value.

Note: Color ID corresponds to an AutoCAD or MicroStation color ID.

6. To save the settings, do one of the following:

7. To save the settings in a new layer mapping file, click Save As, navigate to the target folder, and enter a new file name.

8. To save the changed settings in the existing layer mapping file (whose file name appears in the dialog's title bar), click OK.

9. When exporting a project from Revit Architecture, you specify the layer mapping file to use on the <Format> Properties tab of the Export dialog.

Exporting Images

When you export an image, Revit Architecture prints any view directly to a raster image file. You can then use this image for online presentations or printed materials.

To export a view to an image file:

1. Click Application Menu -> Export -> Images and Animations -> Image.

2. In the Export Image dialog, click Change to change the default path and file name for the image, if desired.

3. Under Export Range, indicate the images to export:

• Current window. This option exports the entire contents of the drawing area, including parts that are outside the current viewing area.

• Visible portion of current window. This option exports whatever is currently visible in the drawing area.

• Selected views/sheets. This option exports the specified sheets and views. Click Select. In the View/Sheet Set dialog, select the views and sheets to export, and click OK.

4. Under Image Size, specify image display properties, as follows:

• To specify a print size and orientation for the image, select Fit To and enter a pixel value. For Direction, select Horizontal or Vertical. Revit Architecture fits the image horizontally or vertically into the specified number of pixels.

• To magnify or reduce the image, select Zoom To and enter a percentage. Revit Architecture prints the image at the specified zoom setting.

5. Under Options, select the desired print options:

• By default, links in the exported image display in black. To display blue links, select View Links in Blue.

• To hide unwanted parts of the drawing in the exported view, select any of the following: Hide Ref/Work Planes, Hide Scope Boxes, Hide Crop Boundaries, and Hide Unreferenced View Tags.

6. Under Format, select an output format for shaded views and non-shaded views. If you specified a Zoom To percentage for Image Size, select a DPI (dots per inch) value for Raster Image Quality.

7. Click OK.

Exporting in 3ds Max

When you have completed the initial design, layout, and modeling of a project in Revit Architecture, you can use Autodesk® 3ds Max® Design to produce high-end renderings and add final details.

You can export a 3D view from a Revit project to an FBX file, and import the file into 3ds Max. In 3ds Max, you can then create sophisticated renderings of the design to share with clients. The FBX file format passes rendering information to 3ds Max, including lights, render appearances, sky settings, and material assignments for the 3D view. By preserving this information during the export process, Revit Architecture reduces the amount of work required in 3ds Max.

In Revit Architecture, open a 3D view, and prepare it for export.

1. Click Application Menu -> Export -> FBX.

Tip: If FBX displays as gray, open a 3D view of the project. Then try again.

2. On the Export 3ds Max (FBX) dialog, for Save in, navigate to the target folder for the exported file.

3. For Naming, do one of the following:

• To specify a file name manually, select Manual (Specify file name). For File name/prefix, specify the name of the output file.

• To use an automatically generated file name, select Automatic – Long (Specify prefix), or Automatic – Short.

4. Click Save.

Revit Architecture generates the FBX file and places it in the target location.

You can now import the FBX file into 3ds Max, using the 3ds Max FBX plug-in

Tip: Performance may be slow for large projects that contain lots of objects and their data. To improve performance, limit the model geometry being exported. In Revit Architecture you can use a section box, hide categories of model elements that you do not need for the scene, and set the detail level as appropriate.

Exporting Walkthrough/Solar Study

1. Open the walkthrough view/the view you ahve created solar study.

2. Click Application Menu -> Export -> Images and Animations -> Walkthrough/Solar Study.

3. The Length/Format dialog opens.

4. Under Output Length, specify:

1. All frames to include all frames in the output file(s).

2. Frame range to export only a specific range of frames. For this option, enter the frame range in the entry boxes.

3. Frames/second. As you change the number of frames per second, the total time automatically updates.

5. Under Format, specify Model Graphics Style, Dimensions, and Zoom to the desired values.

6. Click OK.

7. Accept the default output file name and path, or browse to a new location and enter a new name.

8. Select the file type, either AVI or an image file (JPEG, TIFF, BMP, or PNG).

9. Click Save.

10. In the Video Compression dialog, choose a video compressor from the list of compressors you have installed on your computer.

11. Click OK.

12. To stop recording the AVI file, click Cancel next to the progress indicator at the bottom of the screen or press Esc.

Exporting Schedules

To export a schedule:

1. Open a schedule view.

2. Click Application Menu -> Export -> Reports -> Schedule.

3. In the Export Schedule dialog, specify a name and directory for the schedule, and click Save.

4. The Export Schedule dialog appears.

5. Under Schedule appearance, select export options:

• Export column headers: specifies whether Revit Architecture column headers export.

• One row: only the bottom column header exports.

• Multiple rows, as formatted: all column headers export, including grouped column header cells.

• Export group headers, footers, and blank lines: specifies whether sort group header rows, footers, and blank lines export.

6. Under Output options, specify how you want to display the data in the output file.

7. Click OK.

8. Revit Architecture saves the file as delimited text(*.txt), a format that can be opened in spreadsheet programs, such as Microsoft® Excel.

Back to: Training Course Next: 17.2 Import

whitehilooppat49.blogspot.com

Source: https://sites.google.com/site/revitonline/home/training-course-for-beginners/16-export/161-export

Share this post