Autodesk 235B1-05A761-1301 - AutoCAD MEP 2010 User Manual page 746

Adding Model Dimensions to a Parametric Vertical Tank MvPart
Use this procedure to add dimensions to specify the height and diameter of the tank body, and the length
for the tap of the tank.
TIP To avoid distortion of the model, add the overall model dimensions first, and then add the individual dimensions
for the geometry.
1 To add the height dimension of the tank body, in the part browser, right-click Model Dimensions
2 In the modeling area, select the body modifier and specify a location to place the dimension.
3 To specify the actual length of the tap, in the part browser, expand Model Parameters, right-click
4 Verify that the Equation value for WPOf1 is 2" (51 mm), and then click Close.
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and click Add Distance.
NOTE For constant parameter values, you can define a constant dimension, or choose not to add a
dimension and use the default value based on the actual size of the geometry. When no dimensions
are added, the parameter and its value are not displayed during part size selection.
A length dimension (LenB1) is placed in the model and is added to Model Parameters in the
part browser. The value of LenB1 is the height of the extrusion that represents the tank body,
and it can be changed.
WPOf1, and click Edit.
The Model Parameters dialog is displayed.
NOTE Creating a modifier with a plane termination type enables you to use the distance between
work planes as the defined length of the modifier feature. In this procedure, you use the distance
between the work planes you created to locate the tap as the tap length dimension.