Question

Statement (I): For a cantilever retaining wall. Rankine's theory of earth pressure may be used.
Statement (II): For a retaining wall with smooth vertical back, Rankine's theory is appropriate.

• A. Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I).
• B. Both Statement (I) and Statement (II) are individually true and Statement (II) is not the correct explanation of Statement (I).
• C. Statement (I) is true but Statement (II) is false.
• D. Statement (I) is false but Statement (II) is true.

Answer 1

The correct option is A Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I).

Retaining walls are designed for active earth pressure. Rankine's earth pressure theory over estimates the active earth pressure. So it is safe to design the retaining wall using this theory.