PILING-UP BRICK AND ITS PILING-UP METHOD

PROBLEM TO BE SOLVED: To simply conduct piling-up works accurately without requiring skill for a worker, and to obtain the degree of freedom of piling-up corresponding to a desired structure when the brick structure is constructed. SOLUTION: In the rectangular parallelopiped-shaped brick 1, in which the ratio of length in the short direction to length in the longitudinal direction in top face and underside 1a and 1b is approximately a half, two approximately columnar or approximately cylindrical fitting projecting sections 2A and 2B are formed at the central places of squares obtained by dividing the top face 1a into two equal parts in the longitudinal direction respectively in the top face 1a, and a fitting recessed groove 3, into which both fitting projecting sections 2A and 2B can be fitted, is formed from one end of the underside 1b to a section near to the other end in the underside 1b.