Simbi uye epurasitiki grating inonzi simbi-yepurasitiki composite geogrilles, yakakwira simba simbi waya (kana imwe faibha), mushure mekurapwa kwakakosha, nepolyethylene (PE), uye kuwedzera zvimwe zvinowedzera, kuburikidza neextrusion kuti ive inoumbwa ine simba repamusoro tambo tambo. , ine rough compression, inozivikanwawo sesimba repamusoro reinforced geostrip.