Supplementary structure and unit building

摘要

PROBLEM TO BE SOLVED: To provide an appurtenant structure requiring no fireproof cover on a column material facing an outer wall even when built in a fire prevention area, and a unit building with the appurtenant structure coupled therewith.SOLUTION: A appurtenant structure 10 is formed in a rectangular parallelepiped shape including: four column materials; four lower beams each of which is connected to a lower end part of the column material in a horizontal direction; and four upper beams each of which is connected to an upper end part of the column material in a horizontal direction. The small size appurtenant structure 10 is connected and fixed to a member which constitutes an elevation of the building unit to expands an internal space of the building unit. Two column materials are constituted of a groove-shaped steel which has a generally U-like shape or C-shaped steel in cross section, and the other two column materials 11B are constituted of a square-shaped steel which has a generally square shape in cross section. The upper beam 15 and the lower beam 13 are connected to a column material 11B via an end plate 13a by means of a bolt 23 which is screwed into a nut within a through hole 13b and a through hole 11c.SELECTED DRAWING: Figure 9