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Discussion

A fitting factor is applied in the analysis of joints and fittings because

  • A.Load distribution in it is less predictable
  • B.Fittings are made of weaker material
  • C.Fittings carry no load
  • D.Fittings are never inspected

Answer: A

Eccentricities, uneven load sharing among fasteners and manufacturing variation all make a fitting's real stress distribution uncertain. An additional factor, typically about 1.15, is applied on top of the ultimate factor to cover it.

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