With family numbering you can group objects within the same numbering series into different “families”. This can be used, for example, to find similar precast cast units that can be cast in the same bed.

Family numbering is not available for cast-in-place cast units.

When you use family numbering, the cast unit position numbers consist of a family number and a qualifier. For example:

1. Family number
2. Qualifier

Assemblies and precast cast units that match the comparison criteria you define in the Numbering Setup dialog get the same family number. However, if they have the same family number but different part geometry or materials, they get unique qualifier numbers.