Two identical, simply supported beams AB and CD are placed so that they cross each other at

Question:

Two identical, simply supported beams AB and CD are placed so that they cross each other at their midpoints (see figure). Before the uniform load is applied, the beams just touch each other at the crossing point.
Determine the maximum bending moments (MAB)max and (MCD)max in beams AB and CD, respectively, due to the uniform load it the intensity of the load is q = 6.4 kN/m and the length of each beam is L = 4 m.