Plans - Core Drawings Herzog & de Meuron plans: Core 1 - Levels 1M-3 (B126-20-301), Core 1 - Levels 4-7 (B126-20-302), Core 2 - Levels 1-3 (B126-20-303), Core 2 - Levels 4-7 (B126-20-304), Core 3 - Levels 1-3 (B126-20-305), Core 3 - Levels 4-7 (B126-20-306), Core 4 - Levels 1M-3 (B126-20-307), Core 1 - Levels 4-7 (B126-20-308), Core 5 - Levels 1-3 (B126-20-309), Core 5 - Levels 4-7 (B126-20-310) [c Mar 1997]