Question-Answer:

Consider the following statements related to ultimate bearing capacity of footing based on the SPT and CPT values:

• 1. The empirical correlations established in the USA between N and soil properties indicate the value of N conforms to certain standard energy ratios. 
• 2. The value of N to be used for getting φ is the corrected values for standard energy. 
• 3. The angle φ obtained by this method can’t be used for obtaining the bearing capacity factors.

Which of the above statements are correct?

• (a) 1 and 2 only 
• (b) 2 and 3 only 
• (c) 1 and 3 only 
• (d) 1, 2 and 3

Ans. (a)
The angle φ obtained by using N values can be used to find out the values of bearing capacity factor.

Question-Answer civil engineering study