Question
Download Solution PDFIf the retaining wall moves away from the backfill, the value of coefficient of Rankine's earth pressure is given by:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Coefficient of Active Earth Pressure Coefficient:
\({C_a} = \frac{{1 - \sin \left( \phi \right)}}{{1 + \sin \left( \phi \right)}} = {\tan ^2}\left( {45 - \frac{\phi }{2}} \right)\;\)
Coefficient of Passive Earth Pressure Coefficient:
\({C_p} = \frac{{1 + \sin \left( \phi \right)}}{{1 - \sin \left( \phi \right)}} = {\tan ^2}\left( {45 + \frac{\phi }{2}} \right)\;\)
Point to be remembered:
For any value of shearing angle, the product of active earth pressure coefficient and passive earth pressure coefficient will always equal 1.
\({C_a} \times {C_p} = \frac{{1 - \sin \left( \phi \right)}}{{1 + \sin \left( \phi \right)}} \times \frac{{1 + \sin \left( \phi \right)}}{{1 - \sin \left( \phi \right)}} = 1\)
Last updated on Jun 7, 2025
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