To export the pipeworks database:
In Autodesk® Civil Design, on the Pipes menu, click Import/Export Runs > Export DB.
In the Export DB Runs dialog box, enter a file name and select a folder for file storage.
Click Save.
In the Defined Runs dialog box, all the pipe runs that are defined in the existing project are displayed.
Select some or all of the pipe runs and click OK to close the dialog box.
To import the pipeworks database:
In Autodesk Civil Design, on the Pipes menu, click Import/Export Runs > Import DB.
In the Import DB Runs dialog box, select the MDB file that was created as the export file, and click Open.
In the Defined Runs dialog box, all the pipe runs that are defined in the selected MDB file are displayed.
Select some or all of the pipe runs and click OK to close the dialog box.
Choose either wks, or CSV and opening, or importing to Ex-hell is done under the DATA pull down.
And Have a Nice Day!