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IMP!! Amendment 2 to IS 1893 (Part 1):2016

 
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sefi_admin
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PostPosted: Thu Feb 13, 2020 8:43 am    Post subject: IMP!! Amendment 2 to IS 1893 (Part 1):2016 Reply with quote

Message from Secretary, BIS CED 39 Mr. S Arun Kumar 

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EXTRACT


"Based on the developments worldover, the BIS' technical committee on Earthquake Engineering has decided to issue amendment to the expression of Aw (on total effective area of walls in the 1st storey) in the clause 7.6.2 (on Fundamental Natural Period) of IS 1893 (Part 1):2016.
This proposed Amendment thereby reverts Aw to the original expression as in the December 2016 edition of IS 1893 (Part 1).  And, the expression of Aw in the September 2017 Amendment No. 1 to IS 1893 (Part 1) gets deleted accordingly. "


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nitesh_agrawal
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PostPosted: Fri Feb 14, 2020 8:30 am    Post subject: IMP!! Amendment 2 to IS 1893 (Part 1):2016 Reply with quote

Thanks for information.Is the Amendment issued?


Regards
Nitesh Agrawal


On Thu, 13 Feb, 2020, 14:14 sefi_admin, <forum@sefindia.org (forum@sefindia.org)> wrote:

Quote:
           Message from Secretary, BIS CED 39 Mr. S Arun Kumar 

********************


EXTRACT


"Based on the developments worldover, the BIS' technical committee on Earthquake Engineering has decided to issue amendment to the expression of Aw (on total effective area of walls in the 1st storey) in the clause 7.6.2 (on Fundamental Natural Period) of IS 1893 (Part 1):2016.
This proposed Amendment thereby reverts Aw to the original expression as in the December 2016 edition of IS 1893 (Part 1).  And, the expression of Aw in the September 2017 Amendment No. 1 to IS 1893 (Part 1) gets deleted accordingly. "


*********************
     



     



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aditya_m
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PostPosted: Fri Apr 24, 2020 6:39 pm    Post subject: Re: IMP!! Amendment 2 to IS 1893 (Part 1):2016 Reply with quote

Dear Sir,

Thankyou for the information, but do you know when this amendment might release and also in the meantime what calculation one needs to follow till we get an official release from BIS.

As per my understanding the approximate time period calculation for building in RC walls has been incorporated for the calculation of time period for buildings that have a behavior between a moment frame and really stiff buildings (where the stiffness from non structural components can not be accounted for in the Analysis Model).

In MHO commercial/IT buildings time period could be closer to a moment frame than as per Cl.7.6.2.c and for this reason we are calculating the time period as per 7.6.2.b.

The change as mentioned by you will have a significant effect on the time period calculation and hence the seismic load to be considered for strength design.

I request senior SEFIAN to comment on the clause and the amendment issued.

Regards,
Aditya




sefi_admin wrote:
Message from Secretary, BIS CED 39 Mr. S Arun Kumar

***********************************


EXTRACT


"Based on the developments worldover, the BIS' technical committee on Earthquake Engineering has decided to issue amendment to the expression of Aw (on total effective area of walls in the 1st storey) in the clause 7.6.2 (on Fundamental Natural Period) of IS 1893 (Part 1):2016.
This proposed Amendment thereby reverts Aw to the original expression as in the December 2016 edition of IS 1893 (Part 1).  And, the expression of Aw in the September 2017 Amendment No. 1 to IS 1893 (Part 1) gets deleted accordingly. "


***************************************

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