RCC Structures Design
The design of heel slab of a retaining wall is based on the maximum bending moment due to:

Weight of the soil above it
Load of the surcharge, if any
All listed here
Its own weight

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RCC Structures Design
A pre-stressed concrete member is preferred because

Its dimensions are not decided from the diagonal tensile stress
Large size of long beams carrying large shear force need not be adopted
All listed here
Removal of cracks in the members due to shrinkage

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

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

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