A 460.9 mm by 21.7 mm thick plate is welded to the top and bottom of the section shown in Figure Q5 to create a compound section. If the compound section is now used as a simply supported beam which is subjected to a point load p = 109.6 kN at midspan, what is the maximum length of the beam to avoid failure ( in m)? Assume that the maximum permissible stress is 95.0 N/mm2. Please provide the value only and in 2 decimal places.