RCC Structures Design
The toe projection of foundation slabs is taken

Below ground surface
As one sixth of overall height of the wall
As one third of the base
Equal to heel slab

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RCC Structures Design
If the shear stress in a R.C.C. beam is

Greater than 4 kg/cm², but less than 20 kg/cm², shear reinforcement is provided
Greater than 20 kg/cm², the size of the section is changed
All of these
Equal or less than 5 kg/cm², no shear reinforcement is provided

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