T Beams - Moment of Resistance - Problem No 3

Determine the moment of resistance of a tee section
Width of the flange = 1000 mm
Thickness of the flange = 80 mm
Width of the rib = 250 mm
Effective Depth = 560 mm
Area of steel = 4 bars of 20 ∅
Use steel of grade Fe 415 and concrete of grade M15