7 26. The built up shaft consists of a pipe AB and solid rod BC.The pipe has an inner diameter of 20 mm and outer diameter of 28 mm. The rod has a diameter of 12 mm. Determine the average normal stress at points D and E and represent the stress on a volume element located at each of these points. B. 6EN 4 kN 8 kN 6 kN E

7 26. The built up shaft consists of a pipe AB and solid rod BC.The pipe has an inner diameter of 20 mm and outer diameter of 28 mm. The rod has a diameter of 12 mm. Determine the average normal stress at points D and E and represent the stress on a volume element located at each of these points. B. 6EN 4 kN 8 kN 6 kN E