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Rotate1 - the rotate3d function is used to rotate the pipe about the y axis, with the origin as the pivot, -90 degrees. Information about the rotate3d function can be found in the basics help page
AutoCAD Grit Chamber Program
Pipe2
pipe2 origin =
*x:origin 0 - gritdisp1 - ElbowRadius
*y:origin 1
*z:origin 2 +ElbowRadius
Notes: ElbowRadius is the radius of curvature of an elbow. In the script it is given as a function of the inner radius. This function is defined in the Pipe Database program