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Question
If the estimated modulus of elasticity is 30 GPa, then the probable variation (according to IS 456) of the actual values (in GPa) could be between
A.
27-33
B.
24-36
C.
25.5-34.5
D.
28.5-31.5
Answer ( Option B)

24-36

Solution

Probable variation of modulus of elasticity should be within 20% of estimated value.
Hence, actual values could be between 30 - 6 = 24 GPa and 30 + 6 = 36 GPa.

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