Patent ID: 7637069

Claim:
A steel-framed building using section steels having the same cross sections used for a column and a beam, having a joint for the beam in an end of the column, and having a joint for the column in an end of the beam, wherein a beam-side joint for joining an end of the column to the beam, and a column-side joint for joining the end of the beam to the column, and the same members are used as both a reinforcing member disposed at a cross section of the beam as a beam-side joint, and a reinforcing member disposed at a the cross section of the column as a column-side joint, the reinforcing member disposed at a cross section of the beam as the beam-side joint comprising two first end plates disposed in an upper end side, two second end plates disposed in a lower end side, a groove-type plate disposed at a central portion as a connecting member connecting the first and the second end plates, and stiffener plates disposed at left and right opposite outer sides of the first and the second end plates, the reinforcing member disposed at a cross section of the column as a column-side joint comprising two first end plates disposed at one side of the left and right sides, two second end plates disposed at the other side of the left and right sides, a groove-type plate disposed at a central portion as a connecting member connecting the first and the second end plates, and stiffener plates disposed at upper and lower opposite outer sides of the first and the second end plates.