Consolidation MCQ with answer and solution

Concept

Field Compression Curve Reconstruction

Formula

No, Schmertmann's method for constructing the field compression curve is a graphical reconstruction procedure rather than a single mathematical formula.

Step-by-step solution

1. Identify the need to correct laboratory e-log p curves for sample disturbance to obtain the field compression curve. 2. Recall that Schmertmann's method is the standard graphical procedure used for this reconstruction. 3. Select Option A: Schmertmann’s method.

Explanation

Schmertmann's method is a graphical procedure used to construct the actual field (in-situ) compression curve of a soil by correcting the laboratory compression curve to account for sample disturbance caused during sampling and testing.

Shortcut

Remember "Field Smart" — to construct the Field compression curve, use SCHMERTmann's method.

Common mistake

A common mistake is confusing Schmertmann's method with Casagrande's method; students often choose Casagrande's method because it is widely used for determining the preconsolidation pressure (σ_p'), whereas Schmertmann's method specifically reconstructs the field (in-situ) compression curve from the laboratory curve.