| 摘要 |
A stackable mortarless building block has planar front and rear faces 1, 2, a ridged top 3, and a corresponding profiled bottom surface with channel 4 to interfit with the ridges of the blocks of a preceding course. The ridge includes vertical front and rear surfaces and a top surface defined by front and rear inclined surfaces 6, 26 that meet at a peak that extends the length of the block. The channel is shallower than the height of the ridge to define a gap between the front surfaces of vertically stacked blocks. The ends of the blocks are notched so as to overlap with the ends of adjacent blocks in the course.
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