Patent ID: 7923087

Claim:
A strengthened polystyrene load bearing structure, comprising: an expanded polystyrene core with a first side, a second side and a width, wherein said first side is a substantially flat surface; a first high impact polystyrene sheet conformally combined with said expanded polystyrene core and having a shape defined by the expanded polystyrene core, wherein said first side of said expanded polystyrene core and part of said width is covered by said first high impact polystyrene sheet; a second high impact polystyrene sheet conformally combined with said expanded polystyrene core and having a shape defined by the expanded polystyrene core, wherein said second side of said expanded polystyrene core and part of said width is covered by said second high impact polystyrene sheet; and wherein the first high impact polystyrene sheet is overlapped by said second high impact polystyrene sheet along at least a portion of said width.