CADD Engineering Standards - Ohio Department of Transportation

303 References
303.1 General
January 18, 2013
References are used to display the contents of one or more MicroStation design files within the active
design file.
The most common use of references is to display Basemap design file information (See Section 303.3
Basemap Design Files) in a Sheet design file (See Section 303.4 Sheet Design Files) to generate the
various plan sheets used by a typical ODOT roadway project.
References are also used to display the contents of one basemap design file in another basemap design
file to facilitate the design process (i.e. display the existing survey data in the proposed right-of-way
basemap).
303.2 Models
A Model is a 2 or 3 dimensional drawing area that is stored in a design file. A single design file can
contain multiple models, which means you can have multiple, independent, drawing areas in a single
design file. Each model has its own set of view parameters, working units, reference attachments, etc.;
however all models within the same design file share the same Color Table and Background Colors.
Users can only edit one model at a time in a design file.
To manage the model’s properties in a DGN file open the Models dialog box. This dialog box contains
tools that not only allows the user to edit the model’s properties but also allows the user to create, copy,
import, delete and open specific models in the DGN file.
The Models dialog box can be accessed several ways:
Key in: model manager
Or
Select File > Models from the Main Menu bar.
Or
Select the Models icon in the Primary Tools box.
ODOT CADD Engineering Standards 63