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How to Add Interior Walls to a Model in Google SketchUp 8

When you are modeling a building in Google SketchUp, you can add interior walls to your building before switching to a 3D view. When you draft a floorplan in SketchUp, it really helps to ignore things like doors and windows — where a doorway should be in a wall, just draw a solid wall. You can add doors and windows after you extrude the floorplan into a 3D figure.

Here’s how you put in a few interior walls on the first floor of a sample house:

  1. With the Tape Measure tool, drag a parallel guide from the inside of the entryway.

    To do this, just click the edge from which you want to draw the guide, move your cursor to the right (to tell SketchUp which way to go), type a length, and press Enter.

    image0.jpg
  2. Draw a few more guides the same way you drew the first one.

    Working from a pencil drawing, figure out the location of each interior wall and create guides to measure the space.

  3. Switching to the Line tool, draw edges to represent the interior walls.

    By using the guides, it’s easy to draw your edges correctly.

    image1.jpg

    Don’t forget to zoom! When you have a jumble of edges and guides and you can’t see what you’re doing, just zoom in. Many folks forget to change their point of view while they work, and zooming makes all the difference.

  4. Use the Eraser to delete your guides.

  5. Use the Eraser to get rid of any extra edge segments.

    The goal is to have the smallest-possible number of 2D faces to extrude into 3D walls.

    Because the exterior-wall face — and the edges that define it — is part of a separate group, accidentally nicking it with the Eraser deletes the whole thing at once. If this happens, just use Undo to go back a step, zoom in a little bit, and try again.

    image2.jpg
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