PROBLEM TO BE SOLVED: To provide an overhanging unit which does not degrade the durability of a unit building even when it is connected to a normal building unit which is manufactured in a mass at a factory.;SOLUTION: The plane of the overhanging unit 2 which is connected to the building unit 1 is formed by a rigid frame structure. The counter grooved plane is formed by a pin structure, and the top horizontal plane is formed by a horizontal brace structure which is provided with a horizontal brace member 41.;COPYRIGHT: (C)2011,JPO&INPIT
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