RCC Structures Design
As the percentage of steel increases

Depth of neutral axis increases
Depth of neutral axis decreases
Lever arm increases
Lever arm decreases

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RCC Structures Design
In a beam the local bond stress Sb, is equal to

Total perimeter of reinforcement/(Leaver arm × Shear force)
Leaver arm/(Bending moment × Total perimeter of reinforcement)
Shear force/(Leaver arm × Total perimeter of reinforcement)
Leaver arm/(Shear force × Total perimeter of reinforcement)

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