Question:
The shear strength for a structural clay from the unconfined compression test is
The shear strength for a structural clay from the unconfined compression test is
Show Hint
For saturated clay,
\[
\boxed{
q_u=2c_u
}
\]
or equivalently,
\[
\boxed{
c_u=\frac{q_u}{2}.
}
\]
Updated On: Jul 23, 2026
- Half the unconfined compression strength
- Same as the unconfined compression strength
- Twice the unconfined compression strength
- Not related to the unconfined compression strength
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The Correct Option is A
Solution and Explanation
Step 1: Recall the unconfined compression test relationship.
For saturated cohesive soils,
\[
q_u=2c_u,
\]
where
\[
q_u=\text{unconfined compressive strength},
\]
and
\[
c_u=\text{undrained shear strength}.
\]
Step 2: Determine the shear strength. Therefore, \[ c_u=\frac{q_u}{2}. \] Hence, the shear strength is \[ \boxed{\text{Half the unconfined compression strength}.} \] Therefore, \[ \boxed{(A)} \] is the correct answer.
Step 2: Determine the shear strength. Therefore, \[ c_u=\frac{q_u}{2}. \] Hence, the shear strength is \[ \boxed{\text{Half the unconfined compression strength}.} \] Therefore, \[ \boxed{(A)} \] is the correct answer.
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