Civil Engineering MCQAE Level Civil Engineering
The development length of reinforcing steel of diameter d in compression, for M30 concrete and Fe 500 TMT bars (design bond strength for plain bars in tension = 1.5 MPa), is
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Choose the correct answer
A
30 d
B
36 d
C
45 d
D
50 d
Correct Answer
B. 36 d
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τbd = 1.5×1.6 (deformed)×1.25 (compression) = 3.0 MPa; Ld = (0.87×500×d)/(4×3.0) = 36.25d ≈ 36d.
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.