To examine the tensile strength of the non-woven fabric put under ground, tensile tests of the non- 1 woven fabric that confined lateral deformation were conducted. As a result, the tensile strength which is produced by confining lateral contraction increased about 15% in comparison with the non-confined non-woven fabric. The rate of increase could be explained by the Poisson’s ratios. These results are useful to estimate the design strength of non-woven fabrics. As the next step, when pull out force act on non-woven fabrics, tensile strength distributions that will produce on the non-woven fabric were analyzed by mechanical models and in this case experiments were also carried out. As a result, the trend of the tensile strength distributions by analyzing agreed approximately. with experimental result. It can be expected that this analytical method is useful for estimating the deformations of reinforced soil structure.
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