Abstract: The present invention provides a root wrapping type aseismic reinforcement construction and method for a base of a column member. A buffering portion is provided between the base of the column member and a root wrapping member to decrease bending moment generated on the base by an external force. Therefore, the bending moment is less prone to be transmitted to a foundation member, so that the bending moment born by the foundation can be reduced.

Abstract: A floating-refuse-collecting boat of a twin-hulled construction includes a floating-refuse collector located in the water channel formed between the hulls. A plurality of main water-jet units are installed on the bows of the hulls for directing jets of water rearwardly through the water channel for guiding and forcing the refuse afloat in the vicinity of the entrance into the channel and toward the collector. In addition, a plurality of auxiliary water-jet units are mounted on the hulls rearwardly of the main water-jet units and in front of the collector to provide jets of water which prevents refuse from flowing out of the collector when the boat moves astern.