Which of the following is NOT a type of seismic isolation system used in Japan

Which of the following is NOT a type of seismic isolation system used in Japan

Which of the following is NOT a type of seismic isolation system used in Japan?

A. Rubber bearings

B. Steel dampers

C. Concrete slabs

D. Lead-rubber bearings

Answer: C

Explanation: Concrete slabs are not seismic isolation systems.