Autodesk 235B1-05A761-1301 - AutoCAD MEP 2010 User Manual page 706

5 To modify the default, or to specify a calculated value for the length of the trunk and branch,
6 Double-click the Equation value for LenB1, and enter the equation for the diameter of the trunk
7 Double-click the Equation value for LenB2, enter the equation (0.75 * D1), and click Close.
688 | Chapter 14 Customizing Catalog-Based Content
A length dimension (LenB2) is placed in the model and is added to Model Parameters and Size
Parameters in the part browser. The value of LenB2 is a default value based on the extrusion
distance of the feature, and it can be changed.
in the part browser, expand
click Edit.
The Model Parameters dialog is displayed.
Example of Model Parameters dialog
plus one-half the diameter of the trunk (D1 + ( D1 * 0.5)).
TIP Click Calculator to access the Equation Assistant.
Model Parameters on page 665, right-click a length dimension, and