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Table 1 Damage ratios calculated from the Yoshida et al.’s model for wooden houses in Japan and the observed strong ground motions at two stations in Mashiki

From: The cause of heavy damage concentration in downtown Mashiki inferred from observed data and field survey of the 2016 Kumamoto earthquake

Event Site Component Maximum Acc (cm/s2) Damage ratio for construction age category    
     –1950 1950–1970 1970–1981 1982–
4/16 01:25
Mainshock
IIS Mashiki NS 776 0.555 0.481 0.330 0.105
   EW 825 0.711 0.481 0.423 0.154
  KMMH16 NS 651 0.473 0.386 0.332 0.11
   EW 1156 0.637 0.423 0.555 0.144