Envelope Generation

For each envelope, Substructure selects the maximum and minimum values from all corresponding load groups. For example, the strength load group will include the maximum and minimum values among all strength load combinations.

Substructure generates following combination:

IRC Standard with only service load groups selected.

Envelope Service

Note: Substructure does not consider the specific combinations for column design when generating the envelope because the column combinations are only used for column design. In addition, column design uses the column combinations, not envelopes.