Civil Engineering MCQAE Level Civil Engineering
At a joint in moment distribution method with members having rotational stiffnesses k₁, k₂, and k₃, the distribution factor for member 1 is:
Structural AnalysisDistribution FactorMEDIUM
Choose the correct answer
A
k₁ × (k₂ + k₃)
B
k₁/(k₁ × k₂ × k₃)
C
k₁/(k₁ + k₂ + k₃)
D
(k₁ + k₂ + k₃)/k₁
Correct Answer
C. k₁/(k₁ + k₂ + k₃)
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Distribution factor (DF) = stiffness of the member / sum of stiffnesses of all members at the joint = k₁/(k₁ + k₂ + k₃). Sum of all DFs at a joint = 1.
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