PCT No. PCT / JP96 / 03640 Sec. 371 Date Sep. 25, 1998 Sec. 102(e) Date Sep. 25, 1998 PCT Filed Dec. 12, 1996 PCT Pub. No. WO97 / 22766 PCT Pub. Date Jun. 26, 1997A frame material that can be easily formed as a pillar or beam by appropriately adjusting the length and / or strength thereof, a joint portion of which is uniform and smooth, a residual portion of which can be used as a joint, and which can easily be combined with other building materials. The frame material is formed into an elongate shape, and a cross section crossing at right angles a longitudinal axis thereof is formed into a rectangular shape with the length of a shorter side of the rectangular cross section being made one-third of the length of a longer side. The frame material comprises in combination a frame material in which a pair of through holes (5,5) are provided at a predetermined
pitch on a center line (4) of a front side whose lateral width (w) is constituted by the longer side of the cross section, the hole
pitch of the pair of through holes being a half of the lateral width, and a frame material in which a pair of through holes (5, 5) are provided on a line crossing at right angles the center lines at a hole
pitch of a half of the lateral width in such a manner as to be symmetric with respect to the center line, and pairs of through holes are provided along the center line (4) at the predetermined pitch. In this case, the pitch of the through holes (5, 5) on the center line may be provided so as to be equal to a module dimension of a
building material.