| 摘要 |
PROBLEM TO BE SOLVED: To provide a block by which a highly airtight structure is easily assembled. SOLUTION: The block comprises a base body 11, a projecting part 21 and the projecting part 31 all of which are integrated. The lower left side 11c, lower right side 11d, upper left side 11e and upper right side 11f of the base body 11 are formed to be inclined planes, respectively. The lower surface of the projecting part 21 is formed of left inclined planes 21a to 21c, the upper surface of the same is formed of left inclined planes 21d to 21f, and the left side of the same is formed of left inclined planes 21g, 21h. The lower surface of the projecting part 31 is formed of right inclined planes 31a to 31c, the upper surface of the same is formed of right inclined planes 31d to 31f, and the right side of the same is formed of the right inclined planes 31g, 31h. Fitting grooves are formed in faces of the lower side of the block 1 for construction, respectively, and fitting projecting parts are formed on faces of the upper side of the block 1 for construction, respectively. COPYRIGHT: (C)2004,JPO
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