The paper presents several methods of slopes reinforcement using anthropogenic materials, geosynthetics and bio-engineering methods. The case study to be presented proves that complex combination of slope engineering techniques influences the factor of safety of slopes significantly. The reinforcing materials used consisted of tires mattresses, waste material from landfill site, composition of geotextiles, geogrids and vegetation cover. The assessment of applied solution efficiency was conducted using numerical modeling and long term observations of the reinforced structures. The computation of factor of safety was conducted including all the geotechnical parameters of materials used. Furthermore, the research revealed that application of plants with geotextile and compost underlying significantly improved the slope stability conditions. The results of numerical analysis and comprehensive observation confirmed the correctness of combination of the methods applied. The computed factor of safety for bare slopes has significantly increased, and basically, no signs of failures were noticed at the site.

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