In this blogpost a workflow is described on how to use Navisworks quantification in combination with Civil 3D Surfaces.
Why? In Building projects, Navisworks is already heavily used as a quantity surveying tool for the building itself. A building project also typically involves landscaping and earthworks which is best done in AutoCAD Civil 3D.
Although Volume calculation is a core functionality of Civil 3D, sometimes it is required to have one single quantification tool for the whole project.
This is example of a very basic situation, with the primary goal to describe the workflow. In more complex situations, the workflow is the same.
Step1: Create an Existing Ground surface and a Surface for e.g. a building pad, earthwork model of a road, pipe trench etc…
Step2: Create a solid model between 2 surfaces
When selecting one of the 2 surfaces, in the contextual ribbon, in the surface tools pane, select 'Extract Solids from Surface'
In the dialog that comes up select the surface you want to create a solid from. In the vertical Definition select 'At Surface' and select the EG surface. With these settings a solid will be created between the Building pad and EG surfaces
When selecting the generated 3D Solid, you will see no Volume property at the moment. That's where the property sets become valuable
Step 3: Define a property set for the solids, having the volume property
In the manage tab of the Civil 3D ribbon, select the command 'Define Property sets'
Create a new property Set 'SolidVolume' for the object type 3DSolid and add the Volume parameter
Now close the Property Set Editor.
Step 4: attach property sets to the solids
Property set data can be attached manually to individual objects or automatically to all objects.
To manually assign property set data, select the object and open the AutoCAD properties pane. In The Extended data tab, click on the little button on the bottom left and select the propertyset you want to add.
To automatically assign property set data to objects type the command 'AECPSAUTOATTACH' and set it to 'ON'. From now on, all object types that have property sets defined will get the property sets automatically.
Step 5: bring the solids to Navisworks and perform quantification.
When I now load the Civil 3D dwg in Navisworks, the solid will be there and a SolidVolume tab will be available in the properties. The Volume property now can be used in the Quantification tools.