Draw 3DPoly Perimeter

This command draws a 3D polyline on the PERIMETER layer. This is one way to generate the polyline that is required by the Calculate Stockpile Volume and Calculate Pond/Pit Volume routines. In these routines, this polyline is used as the inclusion perimeter for volumes. If you are using Carlson points to define the polyline, make sure they are present in the drawing at their real Z elevation, and then set your Object Snap to Insert prior to running this routine. Alternately, you can use point numbers from the current coordinate (.CRD) file. A third option is to obtain the elevations of picked points from a specified surface model. You have a further option to be prompted for each elevation, thus overriding the values found from the included points.

Prompts

If set to display, the 3D Poly options dialog will appear, and then you will be prompted for points to use to draw the 3DPoly Perimeter. Standard Carlson point number input or screen picks using selection methods are valid.

Prompt for Elevation/Slope: Using the .XY filter allows the user to pick the X and Y coordinate from the screen and type in the elevation. If you use the No response then the Z coordinate of the point picked will be applied.
Use surface model from file: With this option, a surface file is specified, and then with each screen pick, the surface elevation is determined. If Prompt for elevations is set to No, the surface elevation is applied to the polyline vertex. If set to Yes, the surface elevation is displayed as the default, and can be accepted by pressing Enter, or a different elevation can be typed in instead.

Pick point or point number: pick a point or type a point number
Arc/Close/Undo/Pick point or point number: 15 This is a point number from the current coordinate (.CRD) file.

Note that if the response to Use Surface model from file is Yes, the elevation used is not the point elevation from the coordinate file (.CRD), but the elevation interpolated from the surface.

Arc/Close/Undo/Pick point or point number: press Enter
Draw another 3D polyline [Yes/<No>]? press Enter Pressing Enter ends the command.

Pulldown Menu Location: Surface >> Stockpile/Pond/Pit Volumes
Keyboard Command: 3dperim
Prerequisite: None