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*** ERROR:THE AXIAL STRESS ON MEMBER EXCEEDS 0.1FCK AT SECTION 0.0

 
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mitupandit00
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Joined: 30 Nov 2013
Posts: 4
Location: Chandigarh

PostPosted: Fri Jun 24, 2016 9:09 am    Post subject: *** ERROR:THE AXIAL STRESS ON MEMBER EXCEEDS 0.1FCK AT SECTION 0.0 Reply with quote

Dear Safiens,

While Designing the structure in Staad Pro there was an error " the axial stress on member exceeds 0.1fck "
pls Suggest me how to solve this errors in Staad Pro

With Regards
Amit Sharma
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N. Prabhakar
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Joined: 25 Apr 2009
Posts: 453

PostPosted: Sat Jun 25, 2016 5:14 am    Post subject: Reply with quote

Dear Er. Amit Sharma,

It appears that you are designing an earthquake-resistant structure, located  in a sever earthquake zone III and above, as per IS per earthquake code  IS 1893 and IS 13920 for ductile detailing.

As per clauses 6.1.1 and 7.1.1 of IS 13920: 1993, in flexural members and in frame members subjected to bending and axial load, the factored axial stress in the members under earthquake loading shall not not exceed 0.1 fck.  The solution is to follow the the guidelines given in IS 13920 on the sizing of members, and increase the member size as necessary.

With best wishes,

N. Prabhakar
Chartered Structural Engineer
Vasai (E), Pin 401 208
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mitupandit00
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Joined: 30 Nov 2013
Posts: 4
Location: Chandigarh

PostPosted: Sat Jun 25, 2016 12:40 pm    Post subject: Reply with quote

Thanks N. Prabhakar Sir
Your Reply is valuable for me .
The Beam's exceeding axial stress 0.1fck, all are within Shearwalls.
then what we do with these member . Is i increase the size of these member or anything else,
I read somewhere when axial stress exceed 0.1fck in beam then design these beam as Column. Is this ok.
Pls help

Thanks with Regards
Amit Sharma
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N. Prabhakar
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Joined: 25 Apr 2009
Posts: 453

PostPosted: Sun Jun 26, 2016 6:05 am    Post subject: Reply with quote

Dear Er. Amit Sharma,

If the beam is within a shear wall, in my opinion, then it has to be designed as a shear wall only as per clause 9.1 of IS 13920.

If the axial stress in beam exceeds 0.1 fck, then it has to be designed as a column as per clause 7.1.1 of IS 13920.

With best wishes,

N. Prabhakar
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