Seismic forces of Equivalent Lateral Force Procedure using ETABS and hand calculation (Lec10)
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- เผยแพร่เมื่อ 1 พ.ย. 2020
- This video shows how to compute the seismic forces of the Equivalent Lateral Force (ELF) Procedure using hand calculation and using ETABS software.
Upon the request of many, you can download now the excel sheets from the link below:
drive.google.com/drive/folder...
really appreciate !
In 12:14 How you know to use this equation to find Cs where is or much TL to compare with t?
I am designing this building for a site in Bangkok, Thailand. The Mapped Long-Period Transition Period, (TL), is not used in the Thai building code, which is why I ignore the formula for "Cs" that includes "TL"
However, let me provide a brief explanation:
“TL” is the period at which the response of the structure transitions from being controlled by velocity to being controlled by displacement.
You can find the values of the long-period transition period (TL) in the ASCE 7-16 standard in Figures 22-14 through 22-17. However, these values are specific to the United States and may not be applicable to other regions, including Thailand.
If the fundamental period of the structure "T" ≤ "TL", use Eq. 12.8-3.
If the fundamental period of the structure "T" > "TL", use Eq. 12.8-4.
Can you share the Excel sheet that you shown here? thanks.
drive.google.com/drive/folders/1QsAcXHQNhEzJnE5Rpj81BEj-4xqEezCW?usp=sharing
@@Eng.tarekyoussef Thank you very much. You are kind hearted. I wish you success in every sphere of your life.
Thanks
Is the excel sheet it’s allowed to share it
drive.google.com/drive/folders/1QsAcXHQNhEzJnE5Rpj81BEj-4xqEezCW?usp=sharing
According to table 12.2-1, building frame with special shear wall maximum building height could be 160 feet, but your building height is more than 300 feet. expecting your explanation. Thanks in Advance
ELF method should not be used to compute the seismic design forces for building exceeding 160 ft. The ELF method is first discussed for education purpose, and secondly for computing the scaling factor (SF) that used in dynamic analysis.