The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the _______________ stress?
Correct answer: B. Damaging
- A. Working
- B. Damaging
- C. Allowable
- D. None of these
Explanation
The factor of safety compares the stress that would damage or fail the member with the lower stress permitted in design or service. Therefore, the relevant limiting reference is the damaging stress.
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