Sign Convention
Pile Orientation
The pile is oriented using three angles:
- Alpha - Rotation of pile around central axis of pile, clockwise from the y-axis
- Beta - Batter angle of pile, clockwise from y-axis
- Rotation Angle - Rotation of pile around the z-axis of the pile
![Pile Orientation; Alpha, Beta and Theta](/assets/help/rspile/images/image/figures/sign_convention_pile_orientation.png)
Local Sign Convention
The local coordinates for calculating the pile results are shown. They differ from the direction shown in the 3D view of the pile.
![Sign convention for results in RSPile](https://static.rocscience.cloud/assets/help/rspile/images/image/figures/sign-convention-new.png)