Determine the joint displacements, member end forces, and support reactions for the three-span continuous beam shown in Fig. 7.20(a), due to a temperature increase of 10° C at the top surface and 70°...

Determine the joint displacements, member end forces, and support reactions for the three-span continuous beam shown in Fig. 7.20(a), due to a temperature increase of 10° C at the top surface and 70° C at the bottom surface, of all spans. The temperature increase varies linearly over the depth d 600 mm of the beam cross-section. Use the matrix stiffness method.