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Shear wall distribution bars placed inside the main bars

 
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niresh28
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Joined: 03 Aug 2018
Posts: 15

PostPosted: Fri Jan 18, 2019 9:18 am    Post subject: Shear wall distribution bars placed inside the main bars Reply with quote

Dear Sefians,
Can a shear wall's distribution bars placed in the inner part of the main bars rather than outer? (kindly refer attached shear wall section)

The idea is that part of the reinforcement has been substituted with BRC fabric size 10mm (horizontal and vertical grid with 200mm spacing) where the vertical bars would act as main bars and horizontal bars as distribution bars.

The builders are suggesting for the fabric to be placed inside of the main bars as shown in attachment, for ease of construction. This would cause the distribution bars to placed inside as well.

Would this have any effect to the structural strength of the shear wall?

Your input is highly appreciated.



Shear Wall sec.jpg
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es_jayakumar
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Joined: 24 Nov 2011
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Location: Cochin

PostPosted: Sun Jan 20, 2019 1:35 am    Post subject: Reply with quote

The structural action of a shear wall is similar to that of a column. I hope, the horizontal bars in a shear wall are catering not only to shear force resisting requirement, but also to help confine the long vertical bars against buckling when subjected to compressive forces. In that point of view, it is essential that they should be provided outside the vertical main bars, similar to the function of lateral ties in a column.

E S Jayakumar
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