Overall Base Inclination

The Overall Base Inclination is the angle of a line from the toe of the slope to the exit point on the upper slope, which defines the overall failure direction or base line of the toppling mass.

In general, the Overall Base Inclination is not equal to the inclination of the base of the toppling blocks. Because it is assumed that the base of each toppling block is perpendicular to the toppling joint angle, the Overall Base Inclination is always greater than (or equal to) the block base angle.