| 摘要 |
A block for use in constructing a retaining wall having a bottom with a non-planar portion which creates a gap between the bottom surface and the top surface of a lower course of similar blocks when the block is placed thereon is herein disclosed. The non-planar portion permits the block to rest on a lower course of blocks and provides a space where small amounts of rubble and dirt may exist without interfering with the stacking of the blocks. The non-planar portion of the block reduces the unit weight of the block without significantly affecting the structural integrity of the block. The block's bottom surface may further comprise a plurality of grooves and a gutter constructed and arranged with respect to the non-planar portion so as to define a bearing surface therebetween.
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