Here, the designers gets a natural advantage of using T or L beams in any structure with slab beam construction. It is mainly used in frame type structure. A T-beam or Tee-beam is used in a construction process which is a load bearing structure of a reinforced concrete, wood or metal having T-shaped cross-section. The vertical section (web) of the beam below the compression flange serves to resist shear stress and to provide greater separation for the coupled forces of bending.
Therefore, in any situation of beam-slab we can use T-beam.