摘要 |
An igloo building block mold comprises a shell defining a pair of generally cuboid mold portions. The mold portions are offset from one anothe r in both an upright direction extending between the top and bottom ends of the mold portions and a lateral direction extending between the end walls of each mold portion . A building block formed by the mold, when stacked on a previous row of blocks, permits inter-engagement between the blocks due to a shoulder being formed on each block which engages the corresponding shoulder of a previous block supported therebelow. The offset in the lateral direction permits side edges of each block to be inter-engaged with adjacent blocks as the blocks are placed in the desired position in the igloo structure during construction.
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