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

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

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

(OP)
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,

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

Check section 5.3 - Design to EN1992-1-1.

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

(OP)
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 ,

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

No. If the structural is irregular, a RSA should be used. Not related to code but to the structural behaviour and analysis method limitations.

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

Forget the code. What analysis method is adequate to your structure, taking into account its regularity and the analysis methods limitations?

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

If you have already used RSA, there's no need to design using the simplified lateral force method, right?

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

(OP)
So, the conclusion is that the regularity verification for both plan and elevation should be applicable even in low seismicity zones (DCL) .

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

The conclusion is that the analysis method should be applicable to your structural system.

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

(OP)
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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