Abstract
Fragility models of a damage mode in the earthquake and of a building and facilities were presented to grasp the cost performance effect of earthquake-proof countermeasure toward the telecommunication building which supports a high information-oriented society. The expectation loss of the telecommunication building was estimated by some earthquakeproof Indexes, Is value, and some ranks of facilities based on Seismic Risk Management (SRM) method. It was clear that the SRM method could lead the optimum value of investment to buildings and facilities.