Section R602.10.9.2 Braced wall panel supported by floor joists, beams or girders (see section R602.10.8). When the interior braced wall panel, not supported by continuous braced wall or foundation wall below, is used in conjunction/combination with the exterior braced walls, the design of this braced wall system (interior and exterior) including the design of the supporting joists, beams and girders, column and foundation shall be in accordance with accepted engineering practice.