To provide a skeleton excellent in aseismatic property by positioning each nail hole in a range in contact with a horizontal member at the different height in the vertical direction when fixed.

A joining metal is provided by forming a nail hole 2 for a column, and nail holes 3a-3d for horizontal members in a board 1. The board 1 consists of a steel plate of the prescribed thickness, and, is formed, for example, of V-shape. The nail holes 3a-3d for horizontal members are provided in a range in contact with a horizontal member 12 when a joining metal A is connected to a column 11 and the horizontal member 12 is fixed by nails, and the nail holes 3a-3d for horizontal members are provided at different height in the vertical direction when the joining metal A is fixed. Because the nail holes 3a-3d for horizontal members are positioned at different height in the vertical direction when the joining metal A is fixed, no force is concentrated in the same wood grain or the same layer of the horizontal member 12 even when the force to pull out the column 11 from the horizontal member 12, but the force is diffused. Thus, the horizontal member is difficult to break in an interlayer-separating manner, and a skeleton excellent in the aseismatic property can be formed.