Question

Which of the following statements are true?

A. The proportioning of footing in sand is more often governed by settlement rather than by bearing capacity. 
B. The pressure bulb profiles under a strip footing form as co-axially imaginable bulbs under its length. 
C. Friction piles are also called as 'floating piles'. 
Choose the most appropriate answer from the options given below:

• A. A, B and C
• B. A and B only
• C. A and C only
• D. B and C only

Hint:

In sands, settlement governs footing design; in clays, bearing capacity plays a stronger role. Friction piles = floating piles.

Answer 1

The Correct Option is A

Step 1: Analyze each statement.
- (A) True: In sandy soils, settlement usually governs design rather than ultimate bearing capacity.
- (B) True: Pressure bulbs under strip footing are elongated and can be imagined as co-axial bulbs along its length.
- (C) True: Friction piles transfer load by skin friction, hence are called 'floating piles'.

Step 2: Conclusion.
All three statements are true $\Rightarrow$ Correct answer is (1).