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Mettur Tamilnadu-Seismic zone

 
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sukanta.adhikari
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PostPosted: Mon Jun 22, 2020 6:35 am    Post subject: Mettur Tamilnadu-Seismic zone Reply with quote

I have  a confusion regarding seismic zone of Mettur,Tamil nadu.

As per wiki Mettur is an industrial and tourism town located in the Salem district in the state of Tamil Nadu, India. It is best known for the Mettur Dam.


As per bmtpc /IS 1893 salem falls in zone III



How ever some website show Mettur dam is in zone II

http://59.179.19.250/wrpinfo/index.php?title=Mettur_Dam_D00842


I am confused..Within  a district also zone is varying


can any one help


Regards
S Adhikari



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rajancivildesign@gmail.co
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Joined: 26 Jan 2011
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PostPosted: Wed Jun 24, 2020 2:34 pm    Post subject: Mettur Dam in Seismic zone III Reply with quote

Sir,
Previously Salem was in seismic  zone II. Now as per IS1893 part 1-2016 it comes under seismic zone III. Since Mettur Dam   is part of Salem district it is under zone III only. in TNEB, in all our project we mentioned zone III for design puropse.
V.M.RAJAN
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sukanta.adhikari
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PostPosted: Thu Jun 25, 2020 4:17 am    Post subject: Re: Mettur Dam in Seismic zone III Reply with quote

Sir

Thanks for the information... these website are not updated.
.There is  very fine line between zone II and III in that region.

Regards
S Adhikari



rajancivildesign@gmail.co wrote:
Sir,
Previously Salem was in seismic  zone II. Now as per IS1893 part 1-2016 it comes under seismic zone III. Since Mettur Dam   is part of Salem district it is under zone III only. in TNEB, in all our project we mentioned zone III for design puropse.
V.M.RAJAN
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Dr. N. Subramanian
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PostPosted: Thu Jun 25, 2020 6:51 pm    Post subject: Re: Mettur Dam in Seismic zone III Reply with quote

Dear Er Rajan and Er Adhikari,

Even in the 2002 version of the code (5th Rev) Salem was in seismic  Zone III only with Zone factor = 0.16.  

Only Cuddalore was mentioned as seismic zone III in the 2002 version of the code (5th Rev), but later corrected as Zone II with Zone factor =0.10.

With that correction, Annex E of Revision 6 of IS 1893 (Part 1) is the same as in the 2002 version of the code (5th Rev)

Warm regards
NS


rajancivildesign@gmail.co wrote:
Sir,
Previously Salem was in seismic  zone II. Now as per IS1893 part 1-2016 it comes under seismic zone III. Since Mettur Dam   is part of Salem district it is under zone III only. in TNEB, in all our project we mentioned zone III for design puropse.
V.M.RAJAN
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sukanta.adhikari
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PostPosted: Mon Jun 29, 2020 6:01 am    Post subject: Re: Mettur Dam in Seismic zone III Reply with quote

Thanks for the information sir.

Actually I have been to Mettur once for a Power plant project.
It was a for a renowned chemical plant in Mettur. I have designed it for zone III only in 2008.

But somewhere... some body mentioned it as zone II and some website still shows it as zone II..so i got a bit confused.





Regards
S Adhikari






Dr. N. Subramanian wrote:
Dear Er Rajan and Er Adhikari,

Even in the 2002 version of the code (5th Rev) Salem was in seismic  Zone III only with Zone factor = 0.16.  

Only Cuddalore was mentioned as seismic zone III in the 2002 version of the code (5th Rev), but later corrected as Zone II with Zone factor =0.10.

With that correction, Annex E of Revision 6 of IS 1893 (Part 1) is the same as in the 2002 version of the code (5th Rev)

Warm regards
NS


rajancivildesign@gmail.co wrote:
Sir,
Previously Salem was in seismic  zone II. Now as per IS1893 part 1-2016 it comes under seismic zone III. Since Mettur Dam   is part of Salem district it is under zone III only. in TNEB, in all our project we mentioned zone III for design puropse.
V.M.RAJAN
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