tom WISCOMBE: the structure of the building is based on a hybrid of shell behavior, which is surface-based, and spaceframe behavior, which is vector-based. the structure adapts from an underdimensioned condition based on local geometrical and bending moment conditions. where the building shape allows for shell behavior, the depth approaches this minimum. where bending occurs, member depth is increased on a smooth gradient up to the maximum economical depth for a plate girder, at which point the structure delaminates to become a three dimensional vector-based spaceframe. this is a kind of structural phase change, or emergent effect, where the structural system changes in kind rather than simply in degree. it produces highly intricate and ornamental spatial conditions which can be understood qualitatively as well as quantitatively.