Pile Foundations MCQ with answer and solution

Concept

Initial load tests on piles are conducted to determine the ultimate load capacity and load-settlement characteristics before the actual construction begins. As per IS 2911-Part 4, a minimum of 2 initial test piles are required.

Step-by-step solution

1. Refer to IS 2911 (Part 4) - 2013 code provisions regarding load tests on piles. 2. Look up the clause for initial load tests. 3. The code specifies a minimum number of initial test piles as 2.

Explanation

According to IS 2911 (Part 4): 2013, the minimum number of initial test piles for load test is generally specified as 2, unless otherwise specified, to ensure safety and adequacy of the pile design under the given soil conditions.

Why the other options are wrong

B: 12 is completely arbitrary and not mentioned in the code for initial tests. C: 20 is incorrect. D: 22 is incorrect.

Shortcut

Remember 'Initial = 2' for initial load tests as per IS 2911 Part 4.

Common mistake

Confusing initial test piles with routine test piles, which have a much higher percentage requirement (usually 0.5% to 1% of the total number of piles).