Which of the following steel reinforcement does not act as a shear reinforcement in RCC beams?

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SSC JE Civil 06 Jun 2024 Shift 1 Official Paper - 1

Answer 1

Explanation:
As per IS 456: 2000, Clause 40.4, shear reinforcement in reinforced concrete structures can be provided in the following forms:

Vertical Stirrups: These are standard shear reinforcement provided to resist shear forces.
Bent-up Bars Along with Stirrups: In some cases, bars are bent up at angles to contribute to shear resistance in combination with stirrups.
Inclined Stirrups: These are stirrups placed at an angle, often used when the shear force is particularly high or when other reinforcements are inadequate.

For Vertical Stirrups:
\(V_{us} = \frac{0.87 \times f_{y} \times A_{sv} \times d}{s} \)
Where:
\(f_y\)= yield strength of steel,
\(A_{sv}\)= area of shear reinforcement,
\(d\)= effective depth,
\(s\)= spacing of stirrups.
For Inclined Stirrups or a Series of Bars Bent-up at Different Cross Sections:
\(V_{us} = \frac{0.87 \times f_{y} \times A_{sv} \times d \times (\sin α + \cos α)}{s} \)
where α is the angle of the inclined stirrup with respect to the horizontal.
For a Single Bar or Group of Parallel Bars Bent-up at the Same Cross Section:
\(V_{us} = 0.87 \times f_{y} \times A_{sv} \times \sin α \)
where α is the angle of the bent-up bar.