Consolidation and Settlement Analysis

19.1 Components of Total Settlement

19.2 Immediate Settlement

19.3 Consolidation Settlement

Total Consolidation Settlement

• Rate of Consolidation Settlement

19.4 Secondary Compression Settlement In order to evaluate the suitability of a foundation or earth structure, it is necessary to design against both bearing capacity failure and excessive settlement. For foundations on cohesive soils, the principal design criterion is typically the latter the control of expected settlements within the limits considered

tolerable for the structure. As a result, once allowable foundation displacements have been established,

the estimate of total settlement over the service life of the structure is a major factor in the choice of

foundation design.

The purpose of this chapter is to present the fundamental concepts regarding settlement analysis for

saturated, inorganic, cohesive soils. In addition, the recommended procedure for estimation of foundation

settlements is described. Much of this chapter is based on Leonards [1968], Perloff [1975], and Holtz

[1991]. Readers may refer to these works for additional information on consolidation and settlement

analysis.

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