How to create a walkthrough for revit

Written by michelle deer
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The architectural design software Revit provides users with the ability to "walkthrough" a design as it's created to visualise it fully, before putting the design to paper and construction. Walkthroughs provide clients with a 3-D opportunity to get a feel for the space, how it connects to other areas within the floor plan and to make changes before they commit to the design. Unlike other programs, Revit creates a standard walkthrough -- not an animated walkthrough because the only object that moves in a Revit walkthrough is the camera.

Skill level:

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Things you need

  • Revit Architecture 2009 (or newer)
  • Model

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    The Walkthrough Path

  1. 1

    Create the walkthrough path in either the site plan view or floor plan view. To get to the walkthough option, go to the "Create" group on the "View" tab and select the arrow beside "3-D View." This will open a drop-down menu; select "Walkthrough."

  2. 2

    Create the key frames of the walkthrough by left clicking the mouse at various points on the floor plan. Every time you click the mouse, you will create a key frame in the walkthrough. Try to keep the distance between the key frames the same. This will help keep the walkthrough speed at the same rate.

  3. 3

    Finish the walkthrough by selecting "Finish Walkthrough" in the "Walkthrough" group on the "Walkthrough" tab.

  4. 4

    Refine the walkthrough path selecting "Finish Walkthough" by selecting the path and then "Edit Walkthrough." Modify the walkthrough's camera by changing the "Controls" setting in the drop-down menu on the "Modify Cameras" bar to "Active Camera," "Path," "Add Key Frames" or "Remove Key Frames." This allows you to change different aspects of the walkthrough path.

  5. 5

    Change the length of the path on the "Modify Cameras" bar. Revit defaults the path to 300 frames and 20 frames per second, but the human eye sees almost 30 frames per second. If you want the walkthrough to be longer than 10 seconds, select the second "300" of the "Frame 300 of 300," both 300s will be located in a box. Change the total number of frames to the desired length and the frames per second rate to 30.

    Target the Camera

  1. 1

    Change the camera's target at every key frame in either 3-D view or floor plan view. Maximise either the 3-D view or floor plan view, right click on the walkthrough camera in the "Project Browser" and select "Show Camera." The walkthrough path should be visible.

  2. 2

    Select "Edit Walkthrough" with the walkthrough path selected. Move the camera's target grip to the desired location by selecting the pink dot inside a circle and dragging it to where you want to look. Do this for every key frame by selecting either "Previous Key Frame" or "Next Key Frame."

  3. 3

    View the walkthrough in Revit by selecting the "Open Walkthrough" option and selecting "Play." It is best to view the walkthrough in either "Hidden Lines," "Shaded" or "Shaded with Edges" mode if the 3-D model is very large or the file size is very big, otherwise the walkthrough could be choppy.

  4. 4

    Refine the walkthrough path as needed by changing the "Controls" setting in the drop-down menu on the "Modify Cameras" bar.

Tips and warnings

  • It is better to render the images, or individual frames of the walk-through, out to a JPEG or TIFF format. Then use video-editing software to put all of the frames together into a video format. The human eye sees up to 30 frames per second; therefore, you should set your walkthrough's frame rate to 30 frames per second. This means a one-minute walkthrough will contain 1,800 still frame images. Walkthroughs are memory intensive. If you have access to more than one computer with Revit loaded, you may wish to spread the frames out over the multiple computers to speed up the overall rendering time.
  • If you render the walkthrough direct to a MPEG, AVI or other video format, you run the risk of the walkthrough getting an error before the walkthrough video finishes rendering. If this happens, the rendered walkthrough video will be corrupt and will not play.

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