Offset Options in ArchiCAD
By J.T. Burk, December 11, 2003
The offset tool is accomplished with the relative construction method within the control box . . .
. . . by pressing the single offset method.
First, draw the defining polygon.
Next, define the offset distance by entering the R value. Note that the angle is locked to get a "perpendicular" distance entering, but you can unlock the A to a specific point through which the offset has to be done. To define the base polyline, you can also use the magic wand or press the SPACE BAR. Always remember that the offset objects will be made with the current selected tool, such as line, slab, roof, or wall tool.
IMPORTANT NOTE: if you try to offset a polyline defined by lines AND arcs, and then use the magic wand on it (with the line tool selected), you'll get line segments along the arcs (you can control how they are drawn in the tools, using the magic wand settings).
click on image to enlarge
click on image to enlarge
TIP: if you want arcs made of arcs, make the whole process with the circle tool instead of the line tools. This will create offset arcs where the originals were arcs, and lines where the originals were lines.
You can also define multiple offsets by using this button instead.
About the Author
J.T. Burk is the principal of CADeshack, a value-added reseller for architects and builders. He has used the 3D building process for over 13 years, since forming The OwneRep Group, a project management and architectural company in Houston and Chicago. Mr. Burk, who has a master of architecture degree from the University of Wisconsin, is licensed an architect in fifteen states (NCARB), including Texas. He has over 25 years experience in several different building types as well as an extensive corporate architectural background. Mr. Burk is also the principal of The Fountainhead Group, a fountain and waterscape consulting company. You can reach him at firstname.lastname@example.org or by visiting his website at http://www.jtburk.com.
Graphisoft is a leading provider of design and management software solutions for the architectural profession and the building industry. Founded in 1982, Graphisoft is ranked today among the largest AEC CAD software developers in the world, with ten offices worldwide in addition to its Budapest headquarters. ArchiCAD and other Graphisoft products are used by more than 100,000 architects, facility managers and building professionals all over the world. Shares of Graphisoft are traded on the Budapest (GRAPHI) Stock Exchange. More information about Graphisoft is available at http://www.graphisoft.com.
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