GGU-STABILITY: General notes on nail wall input

Nail walls are analysed using polygon slip surfaces in line with applicable approvals. The analysis of circular slip surfaces (Bishop) serves to investigate the overall stability, i.e. slip circles that do not intersect either the nails or the wall.

Input of system geometry follows the course described in the previous menu items. The nail wall preferences are specified in the "Nail wall" menu. The menu items can only be selected if you activate the "Calculate wall" box in the "Nail wall/Preferences" menu item.

For the analysis, you must specify the polygon course section in which the nail wall is located. The specified polygon course section (= nailed slope face) governs all necessary verifications.

An investigation of nail walls can only be performed for slopes failing to the left.