Structural-Plate is one of strongest corrugated structural plate products on the market, enabling long span soil-steel structures to be built more economically than ever before. Structural-Plate is available in a variety of shapes. Standard spans range from 1.8m to 14m. Structures are assembled in the field using plates curved specifically for the designated shape. An engineered backfill of compacted granular material is required to complete the installation of the Structural-Plate.