Civil Engineering MCQAE Level Civil Engineering
As per IS 456:2000, the minimum area of tension reinforcement in an RCC beam (b × d cross-section) is:
RCCMinimum Steel in BeamMEDIUM
Choose the correct answer
A
0.85bd/f_y
B
0.12% of gross section
C
0.15% of cross-sectional area
D
0.4% of bd
Correct Answer
A. 0.85bd/f_y
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IS 456 Cl. 26.5.1.1: A_st,min = 0.85×b×d/f_y (in mm² units when using N/mm² for f_y and mm for dimensions). This ensures ductile behavior after cracking.
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