A post-tensioned roof girder of a bridge effective span (6 m) has the following data : Width and thickness of top and bottom flange = 160mm and 70mm respectivety, height and thickness of web = 180mm and 50mm, numerical constant (k)= 6, density of concrete = 2400 kg/m, acceleration due to gravity = 9.81m/s, moment coefficient = 0.125, ratio L/h=25, ratio d/h=0.9, load factor for d.L = 1.4, load factor for L.L = 1.6, applied load = 6.5 kN/m, concrete cube strength = 55 Mpa Ec= 34kN//mm', n=0.8, tensile stress at transfer= -1 Mpa, tensile stress at working load=0, moment of inertia (I)=3300x10' mm. Find:- (a)- Ultimate moments and shears. (b)- Prestressing force and eccentricity. (c)- Check for limit state of deflection A post-tensioned roof girder of a bridge effective span (6 m) has the following data : Width and thickness of top and bottom flange = 160mm and 70mm respectivety, height and thickness of web = 180mm and 50mm, numerical constant (k)= 6, density of concrete = 2400 kg/m, acceleration due to gravity = 9.81m/s, moment coefficient = 0.125, ratio L/h=25, ratio d/h=0.9, load factor for d.L = 1.4, load factor for L.L = 1.6, applied load = 6.5 kN/m, concrete cube strength = 55 Mpa Ec= 34kN//mm', n=0.8, tensile stress at transfer= -1 Mpa, tensile stress at working load=0, moment of inertia (I)=3300x10' mm. Find:- (a)- Ultimate moments and shears. (b)- Prestressing force and eccentricity. (c)- Check for limit state of deflection