INTRODUCTION: CONSTRUCTION OF EMBANKMENT AND IMPOUNDMENTS OVER SOFT SOILS IS ONE OF THE CITED APPLICATIONS FOR GEOSYNTHETICS. THE GEOSYNTHETICS IN THIS APPLICATION WILL HAVE TWO MAIN FUNCTIONS:1) SEPARATION OF THE COARSE VALUABLE MATERIALS AND BLOCK THE MATERIAL TO BE IMMERSED IN THE WEAK SOIL. 2) THE REINFORCEMENT OF THE FILL MATERIAL TO STOP IT FROM LATERAL SPREADING AND ROTATIONAL FAILURE AND REDUCING TOTAL SETTLEMENT.DESIGN PROCEDURE: THE MAIN BREAKWATER WAS DESIGNED WITH GEOSLOPEÂ SOFTWARE USING BISHOP METHOD. THE DESIGN METHOD FOR THE APPLICATION OF GEOGRID IS FULLY COVERED BY BS8006: 1995. ON THE OTHER HAND THE DESIGN METHOD PRESENTED BY FHWA HI-95-038 WAS USED TO DETERMINE THE ALLOWABLE STRAIN IN THE GRID. A SECUGRID 400.40 R6 IS USED IN THE BASE OF THE EMBANKMENT TO IMPROVE THE PERFORMANCE OF THE FOUNDATION. THE PERFORMANCE OF THE BREAKWATER CONSOLIDATION HAS BEEN ANALYZED WITH PLAXISÂ SOFTWARE USING A PLANE STRAIN MODEL.