Slopes extending to infinity do not exist in nature.

Since factor of safety FC with respect to cohesion, also represent factor of safety with respect to height
FC = C / Cm = HC / H
Where, Cm is mobilized cohesion at a depth H.

When a dam is built of relatively impervious compressible soil, excess pore pressure develops in air and water entrapped in pore pressure. This is because soil mass undergoes a change in soil due to compaction of dam construction and also due to a down weight.

In Swedish slip circle method two cases are considered: i) analysis of purely cohesive soil (?u = 0) and ii) analysis of a soil possessing both cohesion and friction (C-? analysis).

Planar failure surface may commonly occur in a soil deposit or embankment with a specific plane of weakness.

The total cohesive force c L?, which resist slipping along slip arc at critical equilibrium, is proportional to cohesion c and height H of slope.

The pore water pressure at any point is represented by piezometric head hw at that point.

Earth embankments are commonly required for railways, roadways, earth dams, levees and river training works.

A number of trial critical slip circle are chosen against sliding and factor of safety of each is computed. The circle having minimum factor of safety is critical slip circle.

i = tan-1(1/2) = 26.5°
For i = 26.5° and ? = 10°, Sn = 0.064
But, Sn = c / Fc ? H
Therefore, Fc = c / Sn ? H
Fc = 25 / (0.064×19×10) = 2.06.