Model Equation Settlement For Free

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 settlement of a foundation of a building or a structure may be defined as the vertical movement (change in elevation) of the base of the footing under the influence of their over-weight or due to other causes.

The settlement can be calculated by knowing the size of the dike, total load on the soil due to weight of the dike and the soil properties such as elastic modulus, Poisson's ratio, compression index, recompression index, secondary compression index, effective preconsolidation stress, coefficient of consolidation and ...

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.

Total settlement of a foundation The total vertical displacement (the combination of all settlement) happens at the foundation due to load occurrence is called a total settlement of the foundation. The specification and calculation of foundation settlement have been mentioned in IS code 8009 Part 1 and Part 2.

The secondary compression settlement (creep) can be estimated from the secondary compression index C?? = C?/(1 + e0), where C? is the coefficient of secondary compression and. Hydraulic conductivity parameters: Assessment of rate of consolidation.

Determination of Coefficient of Consolidation (Cv) Each curve should be identified by noting down the pressure acting on the specimen during the load increment and the duration of the load increment. The coefficient of consolidation, "Cv" determined from the curve, shall be recorded on the curve as well.