ABSTRACT

When the top width is zero, i.e, when b =0, ~ =0, the vertical stress C1z will be due to a triangular loading. The expression for triangular loading is

(6.32)CTz = : [cal +a3 )+ : Cal -Ra3)] Eq. (6.31) and Eq. (6.32) can be used to compute C1z at any point in the supporting medium.

The angles ai' a2, and a3 may conveniently be obtained by a graphical procedure where these angles are expressed as radians in the equations.