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Transiton Bridge Coupler

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ahmedsamy

Structural
Joined
Mar 12, 2016
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2
Location
SA
I am currently working in the construction of high rise tower in the Gulf.
We cast the walls first then after, we cast the slabs/beams.
Now in one of the levels we found that the couplers in the wall are of a diameter less than the required for the slab, so we will use a transition bridge couplers to splice the actual slab reinforcement (T25) with the pre-installed hooks in the wall (T20). The Ldh oh the hook in the wall is bigger than required for T20.
So is this safe ?
Does any Committee/clause of the ACI covers this case ?
Please share with me your knowledge.
 
The coupling ought to be fine but you'll be limited to the capacity of the T20 bars. Unless the T25 bars in the slab were over specified - and they may well be - you would come up short on capacity in the slab.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
 
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