| 摘要 |
A self-locating building block (10) has a longitudinal tongue (12) at the top and a shoulder (14) on each opposite side of the longitudinal tongue (12); a longitudinal groove (16) at the bottom, the longitudinal groove (16) being such that the longitudinal tongue (12) of a similar block (10) is receivable in the longitudinal groove (16) when the blocks (10) are laid in superimposed courses; and cavities (18) extending through the block (10) from top to bottom. The cavities (18) are at least as wide as the longitudinal tongue (12), so as to give the longitudinal tongue (12) a castellated form (12.1, 12.2, 12.3) in side elevation. |
