Maximum principal stress theory for the failure of a material at elast

1.	Maximum principal stress theory for the failure of a material at elastic point, is known
A.	Guest's or Trecas' theory
B.	St. Venant's theory
C.	Rankine's theory
D.	Haig's theory
Answer» D. Haig's theory

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Maximum principal stress theory for the failure of a material at elastic point, is known

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