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Shield for building foundation

  • US 4,907,386 A
  • Filed: 07/08/1988
  • Issued: 03/13/1990
  • Est. Priority Date: 07/08/1988
  • Status: Expired due to Fees
First Claim
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1. Shield for building foundation, comprising:

  • (a) a concrete slab having upper and lower horizontal surfaces,(b) a rectangular configuration of concrete walls resting on and extending vertically from the upper surface of the slab, each wall having a substantial horizontal upper surface adopted to receive building sills,(c) a sheet consisting of a lamination of metal sheet and high strength polymer, the sheet extending over one surface of the slab, extending over one surface of each wall, and extending over the upper end surfaces of each wall to provide a gas-proof enclosure around the foundation, which enclosure is open at the top, wherein the sheet lies over the lower surface of the slab, over the outer vertical surface of the walls, and extends inwardly over the upper end surfaces of the walls.

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