Using a simplified approach to the 'Strut and Tie Model', design a simply supported reinforced concrete beam element to carry ultimate design loads as shown in Figure Q4. Any assumptions made in the design process must be stated clearly. The beam is to be 1200 mm deep and have a breadth of 350 mm. The concrete used for the construction of the beam has a characteristic strength of 40 MPa while the reinforcement is of 500 MPa. 400mm 1000mm 1000 KN 1000 KN 3200mm Figure Q4 400mm [20 Marks]