Note Return to text — EXPERIMENTS ON RETAINING WALLS AND PRESSURES ON TUNNELS.

Admitting the hypothesis that cohesion and friction act at the same time, a general graphical method[Footnote 6] will now be given to find the thrust against the inner face, , of a retaining wall or board, Fig. 11, caused by the earth, , tending to slide down some plane of rupture, , , ..., the resistance along this plane being due both to friction and cohesion.