Fig. 12.
The solution represented by [Fig. 11] is general, and applies whether
is inclined to the right or left of the vertical through
or coincides with it, and whether the earth surface
is horizontal or inclined above or below the horizontal. It can likewise be easily adapted to the case shown in [Fig. 1].[Footnote 7] ] The construction of [Fig. 11] has been used in evaluating the thrust and determining (approximately) the plane of rupture in the experiments (recorded below) of Leygue on retaining boards,
, that could be rotated about