Effective Flange Width

Q. A T-beam roof section has the following particulars:

Thickness of slab : 100mm
Width of rib : 300mm
Depth of beam : 500mm
Centre to centre distance of beams : 3.0 m
Effective span of beams : 6.0m
Distance between points of contraflexur :3.60m

The effective width of flange of the beam is

1. 3000mm
2. 1900mm
3. 1600mm
4. 1500mm

Q. An isolated T beam is used as a walkway. The beam is simply supported with an effective span of 6 m. The effective width of flange, for the cross-section shown in figure, is

1. 900 mm
2. 1000 mm
3. 1259 mm
4. 1500 mm