Offset 3D Polyline

This command allows you to offset a 3D polyline entity in both the horizontal and vertical directions. There are four offset methods. The Interval method applies one horizontal and one vertical offset to all the vertices of the polyline. The Constant method has a horizontal offset and sets the elevation of the polyline to one constant elevation. The Variable method allows you to specify each horizontal and vertical offset individually either by polyline segment or for each point. The vertical offset can be specified by actual vertical distance, percent slope or slope ratio.

Finally, the Surface method allows you to offset the 3D Polyline to intersect a target surface defined by a triangulation or grid file. This functions much like the Design Pad Template command on the Surface menu, but without creating side slope faces; only the intercept (or "daylight") line is created.

Prompts

Enter the offset method [<Interval>/Constant/Variable/Surface]: press Enter
Vertical/<Horizontal offset amount>: 15
Percent/Ratio/Vertical offset amount <0>: 10
Select a polyline to offset (Enter for none): select a 3D poly
Select side to offset: pick a point
Select a point on the graphics screen that is in the direction of the side of line to offset.
Select a polyline to offset (Enter for none): press Enter

Pulldown Menu Location: 3D Data
Keyboard Command: offset3d
Prerequisite: 3D polylines to use for selection; surface file for Surface method.