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CONCRETE COLUMN WITH STEEL ROOF

 
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husseins20
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Joined: 25 Apr 2013
Posts: 53

PostPosted: Tue Feb 18, 2020 12:02 pm    Post subject: CONCRETE COLUMN WITH STEEL ROOF Reply with quote

Hi All,

Can anyone share a design example of a warehouse etc where we have concrete columns with parallel chord truss
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es_jayakumar
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Joined: 24 Nov 2011
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PostPosted: Fri Feb 21, 2020 4:14 am    Post subject: Reply with quote

You can design the parallel-chord truss and the RCC columns that support it separately. The columns can be designed for top free end condition (though on conservative side) for the maximum support reaction transmitted by the truss. If there is more complication in your structure, please post a diagram here.

E S Jayakumar
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husseins20
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PostPosted: Fri Feb 21, 2020 1:08 pm    Post subject: skecth Reply with quote

Dear Eng. Jayakumar,

Attached herewith sketch for your valuable input.

rgds
Hussein



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New Doc 2020-02-21 16.04.28.pdf
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Sketch

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es_jayakumar
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PostPosted: Fri Feb 21, 2020 3:02 pm    Post subject: Reply with quote

I do not find any complication in your structure. Since the span of the parallel-chord truss is 30m, a deeper one may be necessitated. A horizontal tie is advisable to be provided at some depth below the apex of the truss (A-shape). The RCC columns can be designed for maximum compression and tension, if any arises, as obtained from the truss support reaction for various DL/LL/WL combination cases. You may ask any further clarification in this regard.

E S Jayakumar
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