Partitioning for reinforcement identification serves a number of organizational purposes depending on how a building is designed or how it will be constructed.
The following image shows a visual representation of 9 partitions in a basic model where each level has 3 specific partitions. Rebar assigned to a specific partition display like colors. Rebar can be partitioned and thus grouped based on when and where it is needed.
Any rebar, rebar set, or fabric sheet instance in a model can only be assigned to one partition. This maintains numbering sequences and number matching within a partition for schedules and tags.