An exterior T-beam has a clear simply supported length of 6.75m. It has a clear distance to the next webof 3.5m. The base of the web to the beam is 350mm and has an effective depth of 500mm. Use 4-28mm diameter reinforcements with a slab thickness of 120 mm. f'c = 21 Mpa ; fy = 415 Mpa.
a. effective width of the flange
b. depth of compression block of the beam
c. total area of the compression block
d. ultimate moment capacity of the beam