GATE CE 2023 Set 1 — Question 14
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Structural Engineering → RC Fundamentals & Beams → Singly Reinforced Beams
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Question
A singly reinforced concrete beam of balanced section is made of M20 grade concrete and Fe415 grade steel bars. The magnitudes of the maximum compressive strain in concrete and the tensile strain in the bars at ultimate state under flexure, as per IS 456: 2000 are ________, respectively. (round off to four decimal places)
Correct answer
(A) 0.0035 and 0.0038
Solution
According to IS 456:2000, Clause 38.1:
Minimum tensile strain .
Rounding to four decimal places, we get and .
1.The maximum strain in concrete at the outermost compression fiber is taken as in bending.
2.The maximum strain in the tension reinforcement in the section at failure shall not be less than .
For Fe415 steel ( MPa) and MPa:Minimum tensile strain .
Rounding to four decimal places, we get and .
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