A rectangular RCC beam section having a width of 200 mm and depth of 300 mm is subjected to a factored shear force of 60 kN. Determine the nominal shear stress acting in the section if the effective cover is 50 mm and grade of concrete is M 20 and the grade of steel is Fe 415. 

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SSC JE Civil 06 Jun 2024 Shift 3 Official Paper - 1
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  1. 1 N/mm
  2. 1.4 N/mm2
  3. 1.2 N/mm2
  4. 0.86 N/mm2

Answer (Detailed Solution Below)

Option 3 : 1.2 N/mm2
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Explanation:
Given,

Width (b) = 200 mm

Depth (d) = Depth – Effective cover = 300 – 50 = 250 mm

Factored shear force (Vu) = 60 KN = 60 ×103 N

\(\begin{equation*} \tau_v = \frac{V_u}{b \times d} = \frac{60 \times 10^3}{200 \times 250} = 1.2 \, \text{N/mm}^2 \end{equation*} \)

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