GGU-STABILITY: Step 5: Analyse slope with circular slip surfaces (Ex. 2)

When the definition is according to your wishes, calculations can be started. Select the "Analyse" menu item from the "Utilisation factors" menu. You can also initiate the analysis using the [F5] function key and see the same start dialog box.

Adjust the number of slices to suit your wishes. Slip body movement should be to the "right". The "With passive earth pressure" check box should remain activated. This enables consideration of a passive earth pressure wedge in those areas in which the slip surface is steeper than 45° - /2. Confirm your input with "OK". Computation will then be performed using the data provided.

If you chose to view the graphical representation during computation you will now see the course of the calculations, together with safety factor data, on the screen. A large number of slip circles can greatly extend computation time. Deactivate the "Graphics during calculations" check box.

Once calculations are complete you will be shown some statistics. After confirming with "OK", the minimum safety factors corresponding to each centre-point will be displayed. The slip circle with the lowest safety will also be graphically displayed. If the most unfavourable slip circle centre-point is at the edge of all defined centre-points, and you would like to determine the position more precisely, go back to the "Centre-points" menu and supplement the centre-point array as desired.