Standard
STD 101-0001
Volvo Group
Version
4
Page
27
4.6.1.3 Associativity of datum features and design data
A query of any datum feature shall permit access to all relevant information for the datum feature.
This includes the datum indicator, the size limits (if applicable), any applied geometric tolerance,
and the relevant coordinate system.
4.6.1.4 Identification of datum targets
In figure 23, an example of using datum targets is shown. Datum targets can be areas or points.
Datum target areas shall be shown using shading or crosshatching, and datum targets points are shown with a
cross. See figure 23.
Figure 23 – Datum targets and indicators attachment
4.6.1.5 Multiple features establishing a datum
When two or more features are combined to establish a datum, associativity shall be established in the design
presentation.
a) When a pattern of features of size is used to establish a datum axis, the involved model features and any
applied tolerance for these model features shall be organized as an associated group. See figure 24.
