ABSTRACT
A 5-story steel building is considered as the specimen, since it represents many office buildings seen in Japan; it is about the tallest of the majority of steel building stock, and; it tends to deform, if not damped, much more than taller steel buildings under the major quake. The last point is discussed below:
Figure 2 shows spectral displacement Sd vs. acceleration Sa for the design basis earthquake (DBE) and maximum considered earthquake (MCE). The spectra for the ground motion recorded at JR Takatori Station during the 1995 Kobe Earthquake are also shown. Damping ratio 5% is considered. The plots are for elastic responses, but they will be used here as crude estimates for inelastic responses.
