It is important to recover the function of the building facilities immediately after the earthquake hits from the point of view of business continuity. This paper proposed a practical prediction method for the recovery curves of the building facilities. The method takes damage correlation of equipment into account, which depends on the floor response of buildings, and a numerical technique based on the theorem of total probability was employed. A recovery curve of the plumbing system of the high rise building in Tokyo due to a scenario earthquake was evaluated for applicability.
