GGU-CONSOLIDATE: Example system

The following system is given:

The unit weight of the embankment material is 19 kN/m³. The crown width is 5.0 m. The slopes are inclined at 1 : 1.5. The following laboratory test values were determined for both consolidation layers:

• Layer A
  E_S = 4 MN/m²
  k = 1 · 10^-8 m/s

• Layer B
  E_S = 2 MN/m²
  k = 1 · 10^-9 m/s

The maximum surcharge on the embankment is 5 · 19 = 95 kN/m². The system can drain to the top and bottom. The settlement at time t = ∞ is approx. 40 cm. The embankment is tipped in approx. 100 days.

The question to be clarified is: at what point in time is 80 % of settlement achieved.