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Technical

 
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Joined: 26 Jan 2003
Posts: 13

PostPosted: Sun Jul 25, 2004 9:53 am    Post subject: Technical Reply with quote

I am forwarding this query from Dilip to the forum.

Members are requested to post their technical queries & the answers to the Discussion Forum directly (general@sefindia.org) , and not to admin or moderator.

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mc.upadhyay1
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Joined: 26 Jan 2003
Posts: 134

PostPosted: Mon Jul 26, 2004 10:12 am    Post subject: Technical Reply with quote

Hello Dilip
You have to design shear reinforcement for columns
as you do for beams; except the difference that we have to increase
the shear strength of concrete by the factor given in the clause 40.2.2
of IS 456:2000 for axial compression.
If this requirement of shear reinforcement comes out to be more than the
requirement of
special confining reinforcement as per 7.4 of IS 13920; you have
to provide that shear reinforcement; otherwise provide special confining
reinforcement as per 7.4 of IS 13920.

Mukesh Upadhyay





Sub: Shear strength of RCC columns
Sir,
Could you please clarify me at some confusion coming across the
strength of columns. In clause no. 7.3.4 of IS.13920:1993, the design shear
force for columns are given. Again shear strength of columns are given in
clause no.40.2.2 of IS 456:2000. Suppose if the shear strength of column
happens to be less than the design shear force shall it be  provided with
shear stirrups in the form of transverse reinforcement as is given in
clause 7.4 of  IS.13920:1993 ? I have not come across the design of
transverse reinforcement of columns in school textbooks read so far. So, I
am hesitant to do it without confirmation from you.

With regards,
Dilip Ngangom

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mc.upadhyay1
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Joined: 26 Jan 2003
Posts: 134

PostPosted: Mon Jul 26, 2004 10:12 am    Post subject: Technical Reply with quote

Hello Dilip
You have to design shear reinforcement for columns
as you do for beams; except the difference that we have to increase
the shear strength of concrete by the factor given in the clause 40.2.2
of IS 456:2000 for axial compression.
If this requirement of shear reinforcement comes out to be more than the
requirement of
special confining reinforcement as per 7.4 of IS 13920; you have
to provide that shear reinforcement; otherwise provide special confining
reinforcement as per 7.4 of IS 13920.

Mukesh Upadhyay





Sub: Shear strength of RCC columns
Sir,
Could you please clarify me at some confusion coming across the
strength of columns. In clause no. 7.3.4 of IS.13920:1993, the design shear
force for columns are given. Again shear strength of columns are given in
clause no.40.2.2 of IS 456:2000. Suppose if the shear strength of column
happens to be less than the design shear force shall it be  provided with
shear stirrups in the form of transverse reinforcement as is given in
clause 7.4 of  IS.13920:1993 ? I have not come across the design of
transverse reinforcement of columns in school textbooks read so far. So, I
am hesitant to do it without confirmation from you.

With regards,
Dilip Ngangom

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moderator
SEFI Member
SEFI Member


Joined: 26 Jan 2003
Posts: 13

PostPosted: Mon Jul 26, 2004 4:13 pm    Post subject: Technical Reply with quote

Dear Mr.Shah,

Your email ID has been removed from the mailing list.

Regards

Pankaj Gupta
moderator@sefindia.org

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