Extracted text: Determine the stress in each of the two vertical rods if the temperature rises 50 °C after the load P=75 KN is applied. Neglect the deformation and mass of the horizontal bar AB. Use Ea = 75 GPa, as=23.0 µm/m-°C, Aa = 850 mm2 Es = 210 GPa, as = 11.9 µm/m-°C and As = 650 mm2 . %3D Steel Aluminum 2.5m 3m B 3 m 3 m 3 m 75 KN