Create 3D By Volume

Used to create a terrain modeling computed by volume from another reference surface.

You can access this tool from the following:

Ribbon: Civil > 3D Geometry > Create 3D By Volume

Use the Create 3D by Volume tool to create a 3D element computed by volume from a closed reference civil element. One example of tool usage is creation of a top of pond element from the bottom of pond reference element, to which a linear template may be added as an end condition to tie to a terrain model.

Prerequisite:

To use this tool, your active file must contain either Horizontal (closed) and associated vertical geometry element or 3D closed element.

Setting	Description
Design Method	Bottom Up -The 3D element is designed by projecting the slope upward and outward, regardless of signage. If a negative slope is entered, the signage is ignored. Top-Down - element is designed by projecting the slope downward and inward, regardless of signage.
Freeboard	When the Bottom Up method is used, the Freeboard is the height from the top of the volume to the created element. For example, if the volume computes the elevation to be 205.00 and the Freeboard is 6, then the 3D element is drawn at 211.00. When the Top Down method is used, the Freeboard is the height from the bottom of the volume to the created element. For example, if the volume computes the elevation to be 205.00 and the Freeboard is 6, then the 3D element is drawn at 199.00.
Side Slope	Slope drawn from referenced geometry element. Field uses percentage, but alternate values may be entered (i.e., 1:50) and are automatically converted. Signage is ignored, as direction is determine by the selected Design Method.
Target Volume	Volume for the element (in master units, cubic feet or cubic meters) using the two 3D elements and the projected slopes to form a closed volume. If the Volume cannot be attained, a message is displaying indicating no solution.
Plan Area (Display only)	After creation, plan area of the newly created closed element is displayed in the tool settings (in master units, square feet or meters).
Feature Definition	Feature definition used as a basis for symbology of the created element.
Name	Name of created element, default based on Feature Definition settings.

Create 3D by Volume dialog

Element Handlers and Properties

Three element handlers are placed with the element and are editable:

Target volume
Freeboard
Side slope

Selecting the properties of the 3D element displays related properties:

3D Elements Properties dialog

Workflow: To Create a 3D Element by Volume

Select the Create 3D by Volume Tool.
In the Tool Settings, select the Feature Definition and enter the Name, if desired.
Follow the prompts:

Prompt	User Action
Select Element	Graphically select the closed Civil element.
Set Design Option	Select Bottom Up or Top Down. (Use keyboard arrows to change selection.) Data point to move to the next prompt.
Set Side Slope	Type in the side slope, enter, and data point to move to the next prompt.
Set Freeboard	Type in the freeboard (set to 0 for none), enter, and data point to move to the next prompt.
Target Volume	Type in the target volume, enter, and data point to move to the next prompt.
Data Point to Accept Design	The plan area field in the Tool Settings is now populated. Data point to complete the sequence and draw the created 3D element. If the target volume cannot be solved, an error message is displayed.