Patent ID: 8590254

Claim:
A deck block adapted to be interconnected with other deck blocks to form an insulating deck for casting concrete, the deck block comprising: a foam panel having a top surface, a bottom surface, a first end, a second end opposite the first end, a first side, a second side opposite the first side, and at least one opening extending from the second end inwardly through a portion of the panel toward the first end such that the opening has an open end at the second end of the panel and a closed end spaced a distance from the first end of the panel; and at least one protrusion extending from the first end of the panel, the protrusion being matingly receivable in at least a portion of an opening of another deck block panel to interconnect the panel with said another deck block panel in an end-to-end relationship, wherein the first end of the panel has a vertical groove extending from the bottom surface and intersecting the opening of the panel to provide a fluid flow channel from the opening to the bottom surface of the panel when the panel is interconnected to said another deck block panel.