| 摘要 |
Retaining wall building blocks for receiving fill material during construction of a retaining wall, retaining walls constructed with the building blocks and methods of manufacture of the building block wherein the block comprises a cast cement body having a base, a generally upright face wall extending upward from the base, two generally upright side walls extending upward from the base and generally rearward of the face wall, the base, upright face wall, and side walls each having an inner and an outer surface, the side walls each having a top and a rearward most end, and a fill receiving cavity defined by base inner surface, side wall inner surfaces and face wall inner surface for receiving fill material, the fill receiving cavity having a volume wherein a ratio of the volume of the fill receiving cavity to the volume of the retaining wall building block is at least 0.75:1, respectively.
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