There are two types of arc objects which can be used in the model design:
Arc- Hole (Shapes|Arc|Arc-Hole)
Define a hole (tunnel) in a rock mass. The geometrical properties as well as the boundary conditions can be defined and altered in View (Object Properties). The hole can also be repositioned and resized by selecting and dragging the object using mouse.
A hole is defined by giving the coordinate of the centre point, the diameter and the start and end angles (default -180° to 180°). The start and end angles have to be defined in anti-clockwise.
This command can be selected by clicking the speed button on the speed bar.
Arc-Disc (Shapes|Arc|Arc-Disc)
Define an arc (i.e. a part of a hole) in a rock mass. The geometrical properties as well as the boundary conditions can be defined and altered in View (Object Properties). The arc can also be repositioned and resized by selecting and dragging the object using mouse.
An arc is defined by giving the coordinates of the centre point, the diameter and the start and end angles. The start and end angles have to be defined in anti-clockwise.
This command can be selected by clicking the speed button on the speed bar.