Autodesk Water System Civil 3D User Manual

AUTODESK CIVIL 3D CAD MANAGER’S GUIDE 

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The ImportLdtData command can be accessed from the File menu in Civil 3D or by typing 

the command name at the command prompt. You can then select 

the project path and project, and import the data. 

The ExportLdtData command is accessible only from the command 

line and can be run only after the ARX for the ImportLdtData 

command has been loaded. The easiest way to do this is to simply 

launch the ImportLdtData command and then cancel it. You can 

then type ExportLdtData at the command prompt to execute the 

export function. It works like the import command, enabling you to 

select a Land Desktop project and the data to be exported. A similar 

command can also be executed from Land Desktop.  

LandXML: Since its first release, Civil 3D has supported data 

transfer via LandXML. Civil 3D 2007 provides data transfer with 

Land Desktop and other applications that can create and parse 

LandXML data. 

From the File menu, select either the Import LandXML or Export 

LandXML command. 

Vault Plug-Ins: Plug-ins are available for AutoCAD and Land 

Desktop that allow drawings from these applications to be checked 

in, checked out, or opened in read-only mode in a Vault. 

Sharing data with AutoCAD is also important when implementing Civil 3D. There are two 

main mechanisms for sharing data with AutoCAD users: exporting to AutoCAD and using 

object enablers. 

Civil 3D data can be exported to AutoCAD using the Export to AutoCAD command. This 

step explodes the Civil 3D objects into standard AutoCAD entities. The advantage is that 

recipients of this file can then use the linework, text, and other entities as they see fit. This 

solution is generally better for subcontractors and other recipients where you cannot 

control their working environment or ask that they install additional software to use your 

original Civil 3D objects. These objects lose all intelligence and relationship information 

during the export. 

Within your own firm and for users with whom you share data frequently, an object 

enabler is a better solution. The object enabler for Civil 3D installs on top of AutoCAD or 

another AutoCAD-based product and allows users to view Civil 3D objects in their native 

format. Users can modify layers as needed to control the display of the Civil 3D objects, 

without destroying the intelligence and relationships between objects. This is the preferred 

solution.