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Author Message
  Topic: Regular webinars on the portal
Dr. N. Subramanian

Replies: 5
Views: 351

PostForum: Feature Requests   Posted: Thu Oct 07, 2021 7:03 pm   Subject: Re: Regular webinars on the portal
Dear Admin,

It is time for SEFI moves into the webinar culture to spread awareness and knowledge that the members of the group possess in abundance. I request you to hereby provide a feature wherei ...
  Topic: Testing for Compressive Strength of Concrete Cover Blocks
Dr. N. Subramanian

Replies: 2
Views: 351

PostForum: SEFI General Discussion   Posted: Wed Sep 15, 2021 9:46 pm   Subject: Re: Testing for Compressive Strength of Concrete Cover Blocks
Dear Er Ajay

I do not think there is a prescribed test method for concrete covers in any code, leave alone IS 456.

The cube testing procedure will not be applicable to concrete cover blocks.

...
  Topic: In working stress method we consider modular ratio m = 280/(3 σcbc). Is it correct?
Dr. N. Subramanian

Replies: 2
Views: 546

PostForum: SEFI General Discussion   Posted: Tue Sep 07, 2021 10:27 pm   Subject: In working stress method we consider modular ratio m = 280/(3 σcbc). Is it correct?
In working stress method we consider modular ratio m = 280/(3 σcbc). Is it correct?

The short-term modulus of concrete does not take into account the effects of creep, shrinkage, and other lon ...
  Topic: Wind Load calculation as per IS 875 Part-3
Dr. N. Subramanian

Replies: 5
Views: 642

PostForum: Speak Out Box   Posted: Thu Sep 02, 2021 8:16 pm   Subject: Re: Wind Load calculation as per IS 875 Part-3
Dear SEFIans,
For a foot over bridge I want to calculate the wind force over the purlin, but as per table-6 (External pressure coefficients for pitched roofs of rectangular clad buildings) for h/w ra ...
  Topic: Natural disaster management in civil Engineering
Dr. N. Subramanian

Replies: 8
Views: 748

PostForum: Speak Out Box   Posted: Wed Sep 01, 2021 10:17 pm   Subject: Re: Failure of Electric Power lines . 1+ M. customer are without electric power .
Dear Er Pandya,


Yes. I agree with you that the people in Louisiana are without power( one of my relatives is also affected). It is because of trees falling on power lines and some transmission li ...
  Topic: Natural disaster management in civil Engineering
Dr. N. Subramanian

Replies: 8
Views: 748

PostForum: Speak Out Box   Posted: Tue Aug 31, 2021 2:20 am   Subject: Re: Watch Hurricane IDA in New Orleans , USA .
Dear SEFI friends,

We all must watch damage to structures due to :

" Hurricane IDA in New Orleans , USA . "

In year 2005 Hurricane KATRINA did lots of damage, such that US Buil ...
  Topic: Anchor Bolt Embedment Length Calculation
Dr. N. Subramanian

Replies: 6
Views: 1676

PostForum: SEFI General Discussion   Posted: Fri Aug 13, 2021 5:51 pm   Subject: Anchor Bolt Embedment Length Calculation
Dear Er Malla


The equation D-7 was from old ACI code Apoendix D. Now design of anchors is not in Appendix D but in the main section itself- Chapter 17.

As per Eq. 17.6.2.2.1 of ACI 318:2019 p ...
  Topic: Buildings with RCC frame up to plinth and Load bearing masonry above
Dr. N. Subramanian

Replies: 8
Views: 1920

PostForum: SEFI General Discussion   Posted: Fri Aug 13, 2021 2:07 am   Subject: Re: Buildings with RCC frame up to plinth and Load bearing masonry above
Hi Sefians,
Plz share your experiences and comments on buildings with RCC frame up to plinth and Load bearing masonry above plinth. How big is the risk of plinth beam defelction?

Dear Er Hishama ...
  Topic: Anchor Bolt Embedment Length Calculation
Dr. N. Subramanian

Replies: 6
Views: 1676

PostForum: SEFI General Discussion   Posted: Thu Aug 12, 2021 6:20 pm   Subject: Anchor Bolt Embedment Length Calculation
Dear Er. MALLA

Sorry. Concrete breakout is also a type of Pullout strength. Of course, technically Pullout means bolt having no interaction with concrete which can not happen if there is some plate ...
  Topic: Anchor Bolt Embedment Length Calculation
Dr. N. Subramanian

Replies: 6
Views: 1676

PostForum: SEFI General Discussion   Posted: Thu Aug 12, 2021 4:36 am   Subject: Re: Anchor Bolt Embedment Length Calculation
Dear Er. Malla

I have clearly written that the values are from ACI 318
These values were obtained from extensive experimental
Work of several researchers, especially by Prof. Eligehausen
Of the ...
 
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