Rahman Sharifi Soil Conservation and Watershed Management Research Department, Tehran Agricultural and Natural Resources Research and Education Center, AREEO, Varamin, Iran r.sharifi@areeo.ac.ir International Journal of Fundamental Physical Sciences (IJFPS) 6 4 23-25 December, 2016 2231-8186 https://doi.org/10.14331/ijfps.2016.330099 This study investigates the application of geotextiles in reinforcing sand embankments, using numerical simulations performed in PLAXIS. The embankment model is set on a soft clay layer and analyzed with respect to changes in slope, crown width, and height. The Mohr-Coulomb elasto-plastic model was used for simulation, considering soil nonlinearity. Sensitivity analysis shows that increasing the embankment’s slope, width, and height linearly increases maximum settlement. These findings underline the importance of geometric parameters in designing stable geotextile-reinforced structures. Sensitivity Analysis, Geotextile, Sand Embankment https://creativecommons.org/licenses/by/4.0/