Building production has been studied so far mainly from the standpoints of building designers and constructors, not from the standpoint of the building material manufactures. However, the utilization ratio of industrialized building materials has drastically increased and thus the role of the building material manufactures in building production has become more significant, especially in steel structures. This study looks at building production from the standpoint of a steel manufacture. We present the hierarchy of a building and cases where steel structure supply systems correspond to the hierarchy. We studied the feasibility of each of these cases by conferring with professors, designers, constructors, steel fabricators and steel manufactures.
