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L , T and + columns

 
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Dr. N. Subramanian
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Joined: 21 Feb 2008
Posts: 5296
Location: Gaithersburg, MD, U.S.A.

PostPosted: Mon Nov 06, 2006 6:33 am    Post subject: L , T and + columns Reply with quote

Dear Mr. Perwez,

Prof.Sinha has written some papers on L,T, and + columns in
the Bridge and structural Enginee, Journal of ING/IABSE. I do not remember
the year now. You can get it by searching in the web(IRcon has
provided the abstract of all the papers in this journal
available on the NEt). In fact he Prof.Sinha has compiled all the papers
and made it available in his handbook.

Hope this will help.
Best wishes
Subramanian

Message From  perwez[AT]lnt...
Subject: RE: Design of L-shape & T-shape Concrete Column
Date: 04/11/06
Time: 12:11:27
-------------------------
Dear All
Greetings!
Thanks a lot Mr. Anil & Mr. Prem for such a prompt help.
I've gone through SN Sinha's Hand Book. In fact I'm interested in
developing software for design of L/T columns. So hand book is not helping
much. Becos full background of charts (formula etc) is not available.
I'm having some queries also like
1. To decide column is short or long, what shud be the criteria. For
rectangular it is L/D=12, in term or L/r=40, Should we use 40 or we
should use ACI guidance i.e. 22 for unbraced and 34 for braced.
2. For biaxial checking, code has given formula of alpha-n based on
axial load level. Is same value valid for non-rectangular section. Bcos
given alpha-n is approximate (empirical) value, may be valid for
symmetric shape only.
I'll be waiting for reference of books and journals related to L/T
column design and your point of view on above queries.
Regards and thanks
Perwez Ahmad

Dr.N.Subramanian,Ph.D.,F.ASCE, M.ACI,FIE,P.E.,
Chief Executive, Computer Design Consultants,
email:drnsmani[AT]yah...

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