Is vibration control relatively expensive? Various expenses in addition to the devices must be met. However, there are additional benefits such as a reduction in the required size of structural members. In addition, considering that vibration control improves safety during an earthquake and saves repair costs after earthquake, lifecycle costs can be reduced. What are the merits of vibration control other than safety? As it can restrict the vibration of buildings dramatically, it works not only for earthquakes but also strong winds to dramatically improve habitability. Design freedom is also increased; vast event halls, blow-by, and larger openings can be built. What kind of maintenance is required after installation of the vibration controller? Materials like viscous fluid or lead used in the vibration control system in additional damping require almost no replacement because they have high durability and weatherability and maintain stable resistance without performance degradation after repeated operations.