Acta Scientiarum Polonorum

Abstract: According to existing law regulations the safety factor of road embankment higher then 3.0 m should be calculated. One of the most popular and cost effective method is geosynthetics reinforcement with geogrids. Polish government regulations [1999] referred to global stability safety factor does not meet Polish-European Standard Eurocode 7 “Geotechnical design”. The thesis shows the calculation’s way according to PN-EN Eurocode 7 with partial safety factors option and the geogrid reinforcement selection and describes calculation of reduction factors and long term strength of the geosynthetic reinforcement, too. In the calculation part, with slip circle Bishop’s method, comparison of calculation results safety factor (acc. to polish government regulations) and utilization factor (acc. to EC-7 Design Approach 3 and EC-7 Design Approach 1) was done.