Organize Equation Settlement For Free

Coefficient of consolidation is the rate at which saturated soil undergoes consolidation. It can be only measured in laboratory. Time factor is given by T v = C v t d 2 . From this equation, the unit of coefficient of consolidation comes out to be cm2/sec.

The degree of consolidation uk is the ratio of the hatched area F?'(z,t) (= effective stresses at time t) to the total load area F1234 as effective stress at time t = ?.

Therefore, to determine the settlements, it is necessary to know: the course of vertical stresses ?z with depth. The settlement-generating base stress ?1 = ?0 - ? ? h must be used, taking into consideration the stress reduction by the excavation unloading for the embedment depth of the foundations.

To find secondary consolidation settlement in the field (?Hs), H = Thickness of the field consolidating stratum at the end of primary consolidation. Commonly initial thickness is used unless the primary consolidation is very large. Say more than 10% of initial thickness.

Consolidation settlement is time dependent natural process of fully saturated soil due to expulsion of water from the voids and compaction is instantaneous artificial process of partially saturated soil due to expulsion of air from voids.

The Coefficient of consolidation at each pressures increment is calculated by using the following equations : Cv = 0.197 d2/t50 (Log fitting method) Cv = 0.848 d2/t90 (Square fitting method)

The overall process of geotechnical settlement is made up of three main components occur at different stages: Immediate settlement (also known as elastic settlement) Consolidation settlement (or primary settlement) Creep settlement (or secondary settlement).