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# Data Types

After a Probabilistic analysis, the following data can be plotted on histogram, cumulative, and scatter plots.

NOTES:

- The Calculated Data Types are always available for plotting.
- At least ONE input data variable appears in the
**Data Type**list, since at least one variable must be assigned a**Statistical Distribution**, in order to perform a Probabilistic analysis.

## Calculated Data

**Safety Factor**: In most cases, the first thing you will want to view is the Factor of Safety distribution, since it is from this that the Probability of Failure is calculated.**Wedge Weight:**The weight of each wedge (per unit thickness of the slope).**Normal Force**: The Normal Force refers to the resultant force acting normal to the failure plane.**Driving Force**: The driving forces consist of the down-slope component of the weight of the sliding block, forces generated by seismic acceleration, forces due to water pressures acting on various faces of the block, and external forces on the upper slope surface.**Resisting Force**: The resisting forces comprise the shear strength of the sliding surface, artificial reinforcement of the slope or other stabilizing external forces, if present.**Failure Plane Length**: This refers to the lengths of the failure planes for various sliding block geometries generated in a probabilistic analysis.**Upper Face Length**: This refers to the lengths of the upper faces for various sliding block geometries generated in a probabilistic analysis.**Tension Crack Depth**: This data type allows users to plot the various tension crack depths generated in a probabilistic analysis.**Wedge Volume**: The volume of a wedge in RocPlane is numerically equal to its area since the program considers slices of unit thickness only.**Spill Width****Effective Normal Stress****Shear Strength**

**Input Data**

Any Data Types listed after the Calculated Data types (see above) are your Input Data variables (e.g., Slope Angle, etc.) to which you assigned a **Statistical Distribution**.