Patent ID: 9493925
Filing Date: 2016-11-15
CPC Classification: E02D,E02F

Claim Text:
1. An apparatus for stabilizing a slab foundation of a building supported on a perimeter grade beam, comprising: a slab extension of the slab foundation beyond the perimeter grade beam; a vertical moisture barrier assembly surrounding the slab foundation, spaced outside the perimeter grade beam of the slab foundation by a predetermined distance, aligned below the slab extension, and extending to a predetermined depth below the surface grade as determined by the type of soil upon which the slab foundation is constructed; wherein the vertical moisture barrier assembly comprises: a barrier trench having a nominal width not exceeding three inches and excavated to the predetermined depth below surface grade of at least 2.5 feet; a membrane formed of a synthetic composition forming a planar surface disposed against one wall of the barrier trench; and a backfill component of soil filling the barrier trench to the surface grade.