Question

Consider the following statements:
In subsoil exploration programme the term "significant depth of exploration"is up to
1. the width of foundation
2. twice width of foundation
3. the depth where the additional stress intensity is less than 20% of overburden pressure
4. the depth where the additional stress intensity is less than 10% of the overburden pressure
5. hard rock level
Which of these statements is/are correct?

• A. 1, 3 and 5
• B. 2, 3 and 5
• C. 1 and 4
• D. 2 and 4

Answer 1

The correct option is D 2 and 4

Twice the width of foundation corresponds to additional stress intensity less than 10% of the overburden pressure. The additional stress intensity as 20% of the overburden pressure corresponds to 1.5 times the width of foundation.