Q5/ A simply supported post-tensioned prestressed concrete girder (15 m span) of section shown in fig. (5). Find the ultimate moment capacity and check the rupture, use fe- 30 MPa, fy 450 MPa, fpu= 1900 MPa, losses 200 kN, Pj-0.7fpu. 600 mn 150mna 750 mm 900 mm 50 mm 4025 50 mm 350 mnm