This customer in Bellevue, Washington used blocks of EPS15 Geofoam under his driveway to reduce the lateral pressure on his basement wall. With the earth excavated at approximately 45 degrees from the house foundation the blocks of EPS15 were installed in multiple layers with each layer extending out further from the foundation wall, at approximately a 45-degree angle. Then crushed stone and/or compacted earth are installed on top of the final layer. By installing geofoam blocks in this manner, the pressure on the wall is substantially reduced.
The two major applications of EPS geofoam are 1. Reducing lateral loads on vertical structures and 2. Lightweight void fill under structures or roadways where poor soil conditions exist. Universal Foam Products ships EPS geofoam from locations throughout the United States and Canada.