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Estimating and Costing

Q1: If tensile stress of a steel rod of diameter D is 1400 kg/cm2 and bond stress is 6 kg/cm2, the required bond length of the rod is

A 30 D

B 40 D

C 50 D

D 53 D

E 59 D

ANS:E - 59 D

Tensile stress = 1400.
Bond stress = 6.
Bond length = 1400*D/4*6 = 58.33.
Hence, the answer is 59D.



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