Multiple choice

When the triangular section of a beam as shown below becomes a plastic hinge, the compressive force acting on the section (with$\sigma_y$ denoting the yiield stress) becomes

  1. $\frac{bh\sigma_y}{4}$
  2. $\frac{2bh\sigma_y}{4}$
  3. $\frac{bh\sigma_y}{2}$
  4. $\frac{bh\sigma_y}{3}$
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