To draw Cross Sections, select Applications > GEOPAK Site > Cross Section > Draw Cross Sections from Surfaces:

	Job	The GPK file.
	Chain	Select the centerline chain
	Pattern	Select either By DGN file, By Station, or In Existing Only, and follow steps there to Match the symbology of the pattern lines
	Scale	Horiz/Vert scale
	Spacing	spacing of the cross sections to be drawn

Surfaces

	Surface File	Select Model, Object, TIN or any of the three
	Extraction Method	Set how many points to consider when cutting the cross sections through the Surface File
	Display Settings	Set to By Level / By Feature
	Text Settings	(Optional) Set the Elevation/Breakline/&Void symbology
	Type	Line or Line Strings
	Filter Tolerance	Further refines the tolerance uses by the Extraction Method (bullet #2 above)
	Manipulation Buttons:
	Add	After setting the details, click to Add the entry
OR	Modify	After selecting an entry, modify the details, then click Modify
OR	Delete	After selecting an entry, click to Delete it
	Click Draw to draw the Cross Sections to the DGN file

View the cross sections (use the Cross Section Navigator) and ensure the cross sections are accurate.

If the Cross Section do not pass muster, select the menu pull-down Update Options according to how you want to update, then click Draw again to redraw the cross sections.

This may become an iterative process if the first try does not draw cross sections according to the desired outcome.

In order for the HEC-RAS tool to successfully complete, do not move the cross sections from their location in the DGN file.

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Surfaces