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    Derivation of First Storey Shear Rigidity for a Rigid Frame

    Great! I am very glad you have a clue! :) I'm glad you mentioned that about the top storey, because I want to derive the expression for GA in the top storey. The point of contraflexure, from my observations, can be a as small as 1/4 the length of the column (going upwards) for the top storey...
  2. S

    Derivation of First Storey Shear Rigidity for a Rigid Frame

    I am wondering if anyone is familiar with any of Bryan Stafford-Smith and Alexander Coull's work? I have their book Tall Building Structures, Analysis and Design. For rigid frames they express an parameter for the racking stiffness called the shear rigidity (GA). For intermediate storeys...

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