Atlantis Flo-Void® are a high performance fill material consisting of lightweight structural recycled polypropylene modules suitable for application in commercial building construction and civil engineering applications. Atlantis tank modules has been used as a material in geotechnical applications internationally since 1986. Atlantis tank modules have excellent strength to weight ratio making it the ideal choice for absorbing structural loads and reducing underlying stresses including weight reduction on foundations and pipe systems. There are numerous potential uses. Typically for the same occupied volume, Atlantis Flo-Void® modules weighs approximately 1% of the weight of most soil and rock materials. Atlantis Flo-Void® modules have excellent horizontal and vertical compressive strength properties providing long term performance. In addition the Atlantis Flo-Void® modules allow the unrestricted movement of liquid & gases that can benefit many applications to provide a multiple use solution that includes lightweight structural fill, drainage, water storage, gas harvesting, gas remediation, water filtration and stormwater management. These characteristics ensure application versatility, structural performance and design longevity providing a multiple use solution for specifying consultants in the civil engineering, architectural and landscape design fields.