3D Polyline by Slope on Surface

This command creates a 3D polyline at a user-specified slope. The user picks the starting point and then the polyline continues along the surface at the slope until it reaches a point where the maximum slope at the point is less than the design slope. The surface is defined by a grid or TIN file which must be created before running this routine. Applications for this command include designing haul roads or ditches.

Prompts

Enter the polyline layer <SLOPE_ROAD>: press Enter
Select the Grid File dialog
Reading row> 51
Extrapolate grid to full grid size (Yes/<No>)? Y
Limiting length for polyline (Enter for none):
Pick origin point of 3D polyline: pick a starting point
Direction of 3D Polyline (<Up>/Down)? press EnterThe slope must go either uphill or downhill.
Direction of 3D Polyline facing up slope (<Left>/Right)? R Imagine facing uphill. Do you want the polyline to go to the left or right?
Enter the design slope: 10 This value is in percent slope.

Pulldown Menu Location: 3D Data
Keyboard Command: surfpl
Prerequisite: Existing surface file