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ASCE 7-98. Cl.No: 6.5.8.2

ASCE 7-98. Cl.No: 6.5.8.2

ASCE 7-98. Cl.No: 6.5.8.2

(OP)
Dear All,

In one of my project, I used ETABS package for lateral analysis. This is a 15 storyed structure and i got a fundamental period of 2.2 sec. The dimension of building is 150' x 150' and 150 ft height. This is just a square building envelope.
As per code, this is classified as flexible bldg & i have come out with gust factor = 1.05.
I took mass source as 100% self weight, 100 %super imposed dead load, 25 % live load.
Is the procedure right?

Can i consider this building as a rigid structure & take gust factor as 0.85 with a view of Height / min width < 4.0.

Please provide your inputs.

Thanks in advance



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