Data: b = 75 mm, d = 12 mm, σallowable = 155 MPa Calculate: Psafe

$\mathrm{A}=\mathrm{b} \times \mathrm{d}=75 \times 12=900 \mathrm{mm}^{2}$

$\sigma_{\text {dlowable }}=\frac{\mathrm{P}_{\text {sate }}}{\mathrm{A}}$

$\mathrm{P}_{\text {safe}}=\sigma_{\text {allowable }} \times \mathrm{A}$

$\mathrm{P}_{\text {safe}}=155 \times 900=139500 \mathrm{N}$

$\mathrm{P}_{\text {safe}}= 139.5kN$