Iimveliso ze-Tri-planar ziquka iimbambo ze-HDPE ezisembindini ezisembindini ezinikezela ukuhamba kwejelo, kunye ne-diagonally ebekwe phezulu kunye nezantsi imicu enciphisa ukungena kwe-geotextile. I-void yokugcina i-core structure ibonelela nge-transmissivity ephezulu kunemveliso ye-bi-planar.