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Irregularity assessment in low seismicity zones (DCL) according to EC8

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Refaatfaraj

Structural
Feb 25, 2012
61
CH
Dear Colleagues
I would like to ask if there is a clear statements or recommendations in (Eurocode 8 ) about ignoring plan and elevation irregularity assessment in low seismicity zones (DCL) .
Note : If possible the response attached with reference .
Any help will be highly appreciated
Best,
 
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Hi avscorreia
Thank you for your response .
As mentioned on clause 5.3.3(1) that regardless of the structure system and the regularity in elevation .
As far as I understand , the regularity verification for bout plan and elevation can be ignored in (DCL) .
So , do you think the later force method of analysis (EN 1998-1:2004E & Clause 4.3.3.2) will be adequate for all cases in DCL ?
Thanks in advance
Best ,

 
No. If the structural is irregular, a RSA should be used. Not related to code but to the structural behaviour and analysis method limitations.
 
Forget the code. What analysis method is adequate to your structure, taking into account its regularity and the analysis methods limitations?
 
If you have already used RSA, there's no need to design using the simplified lateral force method, right?
 
So, the conclusion is that the regularity verification for both plan and elevation should be applicable even in low seismicity zones (DCL) .
 
The conclusion is that the analysis method should be applicable to your structural system.
 
Sure , so the regularity verification for both plan and elevation in low seismicity zones (DC) couldn’t be ignored , aren’t you ?
 
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