Pile Foundations MCQ with answer and solution

Concept

Dolphin (pile cluster)

Step-by-step solution

1. A dolphin is a group of piles driven close together and tied at the top. 2. It is used to resist the impact of vessels and as a mooring structure.

Explanation

Dolphins are structures made of clusters of piles, used in harbours for berthing, mooring and protection of bridge piers. So a dolphin is a type of pile foundation.

Shortcut

Dolphin = cluster of piles.

Common mistake

Associating the word with caisson or well foundations.