Hence maximum stress Example 5.17 Two rectangular plates, one of steel and the other of brass each 40 mm wide and 10 mm deep are placed together to form a beam 40 mm x 20 mm. Which is simply supported at ends and having span of 1000 mm. The brass plate being on the top of the steel plate. Determine the maximum load which can be applied at the centre of the beam, if the plates are (i) put one over other (ii) firmly secured throughout their length Maximum allowable stress in steel = 112.5 N/mm and in brass = 75 N/mm. Take E = 200 GPa, F-80 GPa