# Problem 917 | Combined Axial and Bending

**Problem 917**

For the structure in Problem 916, calculate the maximum compressive stress in bar *ABC* if its cross section is 200 mm square.

**Solution 917**

$\Sigma M_A = 0$

$3B_H = 6(20)$

$B_H = 40 ~ \text{kN}$

$\Sigma M_E = 0$

$6B_V + 3(40) = 3(60)$

$B_V = 10 ~ \text{kN}$

Axial Force, *P _{a}*

Moment at *B*

Maximum compressive stress:

$\sigma_c = \dfrac{10(1000)}{200(200)} + \dfrac{6(60)(1000^2)}{200(200^2)}$

$\sigma_c = 45.25 ~ \text{MPa}$ *answer*

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