| 摘要 |
PROBLEM TO BE SOLVED: To relatively easily arrange end member blocks without requiring high material processing accuracy, technique, and highly experienced skills for arranging the blocks by forming a notch which is straightly formed in the vertical direction, in a front surface corner at each edge of each block. SOLUTION: An end member block B0 for a projected corner has notches 12 formed therein, which each extend straightly in the vertical direction at a corner portion of each end surface 10 at an edge of the block B0, on a side closer to a front surface 11. When the thus formed block B0 is arranged on a wall surface, a discontinuous surface having a predetermined width is formed by the straight notch 12 along a boundary line obtained by abutting one flat end surface of a flat end member, on the end surface 10 of the end member block B0 for the projected corner. Therefore, even if a slight step or slippage is formed on a plane formed by the front surface of the end member and the front surface 11 of the block B0, the boundary line is cancelled by the notch 12 and hence become inconspicuous. Thus, the end member block can be relatively easily arranged without requiring high material processing accuracy, technique, and highly experienced skills.
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