Thursday, November 5, 2009

Re: pull-out bars

Yes. I am agree with you and this is also my point of view, the second bend weaken the rebar. Also, the construction joint is not in acordance with ACI code because joint is at the support's edge where in the maximum shear is located.

From: Bob Freeman <>
Sent: Friday, November 6, 2009 12:15:22
Subject: pull-out bars

Hi Noy:


Are you referring to a process that a threaded insert could provide?  A threaded insert could be threaded to a hooked bar in the wall/column and then after the wall is poured, a beam re-bar could be threaded into the same insert. I would design a corbel to hold the vertical reaction of the beam in the second pour as well.


We have done this successfully on several projects.


If you are re-bending an embedded rebar, the second bend after the first pour would severely weaken the rebar.



Bob Freeman, AIA, EIT



From: Noy Tiglao []
Sent: Thursday, November 05, 2009 12:42 PM
Subject: pull-out bars


Is there provision in ACI or any standard/code that allows 'pull-out bars'? i am refering to a reinforcing bar that is bent and embedded in concrete wall/column, and then pull it out to connect/splice the  reinforcing bar of a beam or slab. (personally, i do not agree with this approach but some engineering firms allow it) please give me insight. thanks.


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