The wall friction of the retaining wall:

1.	The wall friction of the retaining wall:
A.	decreases active earth pressure but increases passive earth pressure
B.	decreases passive earth pressure but increases active earth pressure
C.	decreases both active and passive earth pressures
D.	increases both active and passive earth pressures
Answer» B. decreases passive earth pressure but increases active earth pressure

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The wall friction of the retaining wall:

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