Tauqirrbk
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Tauqirrbk reacted to a post in a topic:
Response Spectrum Load Case
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thank you for response . yes i agree, lda analysis should be preformed for irregular structures, my confusion is about load combination, which load combinations should i use , RS only or both Static and Rs .
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Tauqirrbk reacted to a post in a topic:
Response Spectrum Load Case
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YES
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Tauqirrbk reacted to a post in a topic:
Response Spectrum Load Case
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Aoa, i was working on G+35 tower , I've preformed response spectrum analysis ,scaled dynamic base shear for more than 85% respect to static base shear, all the shear walls fails pu/po>.35 , initial sections sections were 12'' up to the top, i increased sections and fc'. but my senior told me not to increase size of walls instead replace static Eq ( all six) load case with spectrum load case , he gave me reference of model which is done by other structural design firm. seniors here kindly elaborate what would be the reason not to include Static Eq cases in load combinations. note. diaphragm is semi rigid check attached excel sheets of load combos.other firm.xlsx my model.xlsx other firm.xlsx
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can't we use story shear graph (response for lateral forces ) and apply weak storey check as per code .?