A simplified procedure is developed to provide a tool for assessing the variation of the computed excavation responses, including wall and ground deformations, induced by input parameter uncertainties through a finite element solution. A well-documented case history is employed for demonstration. The proposed scheme appears accurate and easy-to-use in the propagation of parameter uncertainties. Moreover, this procedure is capable of assessing the variability effect of either a single or multiple input parameters. Further, the sensitivity of the uncertainty effect on the excavation characteristics is also examined. The proposed procedure enables a valuable insight regarding how much variation of wall and ground movements that can be expected as a result of parameter uncertainties.

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