US Patent 11926984 Footing and foundation wall drainage system

Disclosed herein is a system for draining groundwater away from a substantially vertical foundation wall that extends beneath the surface of the ground, and which has an exterior surface in contact with the ground. The drainage system includes a drainage structure that extends longitudinally along an entire interior foundation wall footing. The drainage structure is fabricated from a plurality of foldable polypropylene panels that are secured to and are adjacent to the foundation footing. The drainage structure forms a drainage channel that facilitates the flow of infiltration water to a sump pump or other means for ejecting water, and extracted radon, from proximate the foundation.