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How to Check the drift limits according to ASCE (Lec15)
This video shows how to check the drift limits according to ASCE. Two types of lateral loads are used:
1- static lateral loads from the equivalent lateral force (ELF) method. The seismic forces of ELF were computed based on the fundamental period of the structure by defining a load pattern of type "Seismic Drift".
2- dynamic lateral loads from the response spectrum analysis (RSA) method.
Upon the request of many, you can download now the excel sheets from the link below:
drive.google.com/drive/folder...
Пікірлер: 8
truly appreciated, excellent work
really appreciate !
@kysugio
Жыл бұрын
Lại bắt gặp chuyên gia... video chất lượng verry good! Thanks verry much❤
why we should not use cd factor when check drift with Resposne Sp.????
@ahmedjameel4578
2 ай бұрын
because the res spec load case has to include the ratio *I/R. the drift load combo has to include Cd/I. So he merged the two cases and just multiplied by (I/R)*(Cd/I) which is Cd/R = 5/6 = 0.833. In the ELF method there is no inclusion of these parameters in any case. So he included the Cd/I in the excel sheet.
@Eng.tarekyoussef
2 ай бұрын
@ahmedjameel4578 is right. "Cd" is already included. I multiplied the original RSA load case (not reduced by I/R) by Cd/R. You can use the reduced demand of RSA load case (multiplied by I/R) called " Internal force-X or Y" and multiply it by Cd/I, and you will get the same results.
Can you download the file cad pleas
HI CAN I GET EXCEL SHEET