The WFCM does not require special consideration of floor plan offsets up to 4′. If the floor plan offset exceeds 4′ deep, the provisions of 18.104.22.168a would apply. The building would be designed as:
1) separate structures attached at the wall line at the offset(s); or,
2) a rectangular building with perimeter dimensions that inscribe the entire structure including the offsets.
The appropriate design method would be decided by the complexity of the building shape and the load path required to transfer the forces.