splice in beams according to ACI318 chapter 21
splice in beams according to ACI318 chapter 21
(OP)
according to ACI 318 chapter 21 longitudinal bars in beams of special moment frame are not allowed to be spiced within joints and 2 times of beam depth measured from the face of joints. if i am not misundstanding it the bottom bars in a continuous beam shall be spliced in the mid span of beams. i just feel it is kind of unsafe to do that. what do you guys think? thanks.






RE: splice in beams according to ACI318 chapter 21
The idea is not to splice the bars at mid-span generally, here is the commentary:
"Recommended detailing practice would preclude the use of splices in regions of potential yield in members resisting earthquake effects. If use of mechanical splices in regions of potential yielding cannot be avoided, there should be documentation on the actual strength characteristics of the bars to be spliced, on the force-deformation characteristics of the spliced bar, and on the ability of the Type 2 splice to be used to meet the specified performance requirements."
Accordingly, I would try and located the splices at the point's contraflexure under dead loads.
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RE: splice in beams according to ACI318 chapter 21
Mike McCann
MMC Engineering
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Motivation: Don't ask
RE: splice in beams according to ACI318 chapter 21