GGU-STABILITY: Construction conditions

The inner stability of the wall must also be investigated for intermediate conditions. A construction condition exists if excavation has taken place to, or below, the level of the nail(s) but the nail has not yet been placed. These intermediate conditions can be easily calculated with the program, if in the dialog box "Nail wall/Preferences" the "Investigate construction condition" check box is activated. For calculation of slip bodies, the action of each first nail above the intersection of the polygon with the wall will be set to "0".