The use of geosynthetics in soil reinforcement applications requires the selection of a syn-thetic materials which take into account the tensile strength necessary for the planned effect of strengthen-ing the ground and strain appropriate to the expected degree of subsidence. The paper presents the re-search’s methodology and results of analyses obtained from laboratory tests of tensile strength of the samples of woven geotextiles used for soil reinforcement in the forming solid waste landfill located in Warsaw, the capital city of Poland. Because of adapting the old municipal landfill into a winter sport complex, the slopes of the structure required major reinforcements. What is important geosynthetics in the landfill can be exposed to elevated temperatures, so the aim of the research was to determine tensile strength and elongation at temperatures from 20°C to 80°C. The results obtained allowed verification of the effectiveness of applied materials and assessment of its parameters. Also research results derived from information provided by the manufacturer data were compared. Obtained divergent values between test results and manufacturer characteristics should be considered in construction designing.
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