Secugrid® geogrids absorb tensile forces applied to the soil and distribute the stresses via its flat and stiff bars. This transfer of stresses takes place by two distinct mechanisms: interlock of the granular soil with the grid apertures (a.k.a. stabilisation) and friction between the soil and the textured surface of the Secugrid® bars. The apertures allow full or partial penetration of the soil particles, which then abut against the ribs (flat bars) providing confinement of the overlying granular/soil material due to the stiffness and strength of the ribs. Furthermore, the high torsional rigidity provides the essential durability for long-term interlocking performance. The combined effect of the interlocked soil and the high tensile stiffness of the geogrid minimizes oil deformation and ensures the integrity of the reinforced structure.