The group efficiency of a pile group is defined as:
Choose the correct answer
Number of piles × individual pile capacity / group pile capacity
Load capacity of the group / (n × load capacity of single pile)
Ratio of group settlement to single pile settlement
Number of piles × spacing
Correct Answer
B. Load capacity of the group / (n × load capacity of single pile)
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
Group efficiency η = Q_group / (n × Q_single), where n = number of piles. η < 1 for most groups in clay (block failure may govern); η ≥ 1 for piles in sand (densification effect). The efficiency accounts for group interaction effects.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Practice more Civil Engineering questions
This MCQ belongs to AE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.