Question

The group efficiency of pile group

• A. Will be always less than $100\%$
• B. Will be always greater than $100\%$
• C. May be less than $100\%$ or more than $100\%$
• D. Will be more than $100\%$ for pile group in cohesion less soils and less than $100\%$ for those in cohesive soils

Answer 1

The correct option is C May be less than $100\%$ or more than $100\%$

$\begin{array}{cc}\text{Type of soil}& \text{Group efficiency of}\\ & \text{pile group}\\ \text{1. Cohesion less soil}& \\ \text{i. Loose sand}& >100\%\\ \text{ii. Dense sand}& <100\%\\ \text{2. Cohesive soil}& \\ \text{i. Clay}& <100\%\end{array}$
Hence the option (c) is correct.