PURPOSE:To save labor in manufacturing and assembling of a pillar, and easily ensure the accuracy by arranging modified H-type junction metallic materials so that they are inscribed in the inner peripheral surface of the pillar, and screwing bolts into the junction metallic materials from split T metallic materials joined to steel framed beams. CONSTITUTION:A junction metallic material 4 having modified H-type cross-section is made up of abutting plates 4a, 4a directed in the different directions and provided with a female thread respectively, and a connecting plate 4b connecting the abutting plates to each other. The junction metallic materials 4 are arranged so that they are inscribed in the inner peripheral surface of a pillar 1, and bolts 5... are screwed into the junction metallic materials 4 from split T metallic materials 3... joined to the upper and lower positions of steel framed beams 2.... Thus, there is no need to cut the pillar 1, and as a result, the time required for construction is reduced, and transmission of stresses from the steel framed beams 2... to the pillar 1 can be positively ensured.
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