RCC Structures Design
The width of the flange of a T-beam, which may be considered to act effectively with the rib depends upon

Centre to centre distance between T-beams
All of the listed here
Breadth of the rib
Overall thickness of the rib

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RCC Structures Design
Pick up the incorrect statement from the following: Tensile reinforcement bars of a rectangular beam

Are curtailed if not required to resist the bending moment
Are bent up at suitable places to serve as shear reinforcement
Are maintained at bottom to provide at least local bond stress
Are bent down at suitable places to serve as shear reinforcement

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RCC Structures Design
If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight 'w' per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is

h = (W/Aw) [(1 + sin φ)/(1 + sin φ)]
h = (W/Aw) [(1 - sin φ)/(1 + sin φ)]²
h = (W/Aw) [(1 - sin φ)/(1 + sin φ)]
h = √(W/Aw) [(1 - sin φ)/(1 + sin φ)]²

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