Abstract: A damping top which comprises first and second L1 connection members (10, 20) connected to each other so as to connect two relatively displacing points (objects) (L1, L2) to each other, which connection members are fixed at one end thereof to the two points (L1, L2), respectively. The first connection member (10) is formed at its connection side with a guide screw portion (10a), on which is rotatably and slidably mounted a rotating top (integral rotating unit) (16) adapted to be driven by a guide nut (14) threaded onto the screw portion through a ball bearing (12). The second connection member (20) is formed at its connection side in a casing (24) for a chamber (22), which receives therein the rotating top (16), and a damping viscous body (26) is filled in the chamber (22). Thus it is possible to provide a damping device which is simple and small-sized, and provides great damping effects.

Abstract: A method of installing a seismic damping wall where the seismic damping wall is attached to the upper floor beam prior to installing the upper floor beam. A hanging plate is placed in the chamber defined by a standing structure plate. The hanging plate is temporarily attached to the standing structure plate. The top edge of the hanging plate is affixed to a horizontal structural beam that upon installation in the building will be an upper floor structural beam. The combined unit, comprising the horizontal structural beam, the hanging plate and the standing plate structure, is placed in position and the horizontal structural beam on the upper floor is installed in the building structure. The chamber is filled with a viscous liquid. The hanging plate and the standing plate structure which were temporarily fastened together are separated from each other. The standing plate structure is lowered down toward the horizontal structural beam on the lower floor.