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Stabilty index Q from Etabs

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Sujitha Menon

Civil/Environmental
Nov 18, 2020
14
Can anybody guide me on how to calculate the stabilty index value from Etabs output.
As per ACI
Q=(Σpux Δo)/Vusxl

Σpu=total factored vertical load in the story being evaluated
is it fine if I take the maximum vertical load derived from a DL/SDL/LL combination

can Vus be the maximum reaction derived from all lateral load combination which is gernally clubbed with Dl and LL?

Does anyone have any excel sheets for the same?
 
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