Static liquefaction is a phenomenon where internal pore water pressure tends to increase while effective stress decreases to zero, leading to soil structure breakdown when static loads are applied. This phenomenon can happen to soil on the seabed when an earthquake occurs. Many studies have been conducted to better understand the behavior of the ground in these situations; however, there are still points that have not been clarified. This study uses the NorSand model to analyze static liquefaction in the Hostun sand RF. The experimental data are used to determine the model input parameters, which are then applied to build a triaxial model to simulate the experimental tests. Furthermore, the study examined the impact of relative density uncertainty on soil liquefaction, which is an Issue that has not been clarified in the literature. The model predictions suggest a possible critical value for relative density beyond which soil structural degradation does not occur. Finally, the NorSand model provides a theoretical foundation for the design of structures while considering the uncertainty of soil parameters.