GGU-SLICE: "Monte-Carlo simulation (Safety)" menu item

If you are not sure precisely how to achieve the parameters given in the dialog box on-site, the Monte-Carlo simulation provides an estimate of the influence exerted by the individual parameters. The dialog box for this menu item varies depending on the selected system. For a single layer system, the menu item is divided into three parts dealing with safety, cohesion and friction angle. Below, you can see the dialog box that opens for a multi-layer system:

The mean and the standard deviation are given for each parameter. If the check box "Standard deviation as multiple of mean values" is activated, you will be presented with a percentage standard deviation relative to the mean value of the parameter. Deactivate this check box if a fixed value is to be used in calculations.

After confirming by pressing "OK" the program performs the specified number of calculations (50,000 computations in the box above). The parameters are randomly varied within the specified limits. The result is a distribution function for eta/mue, or for the tensile force for geogrid systems. In addition, a fractile value is determined, which can be defined in the above dialog box as a percentage value. For example, entering 0.025 (see above) means that 2.5% of the computed results are below the fractile value (see the following result box: eta = 1.205) and 97.5% of the computed results are above it.

If you close the result box by pressing "OK" you will return to the input box for this menu item, where you are able to compute further variations. You can leave this menu item by pressing "End" in the input box or by pressing the "Cancel" button.