thoughtofthis
Structural
- Jan 16, 2012
- 31
I'm sure this question has been asked, but I did not find an answer that was satisfactory in the threads.
In a doubly reinforced concrete beam that is a part of a moment frame, does ACI 12.2 govern the length of splice of the top reinforcement or 12.3. The building is already built and uses 12" splices for all top bars at midspan. 12" does not meet 12.3 for the bar size used, but it is way off if 12.2 governs. I doubt that the intent of the top bars was to carry compression loads (most likely for ductility and to satisfy 12.11/12.12), but technically they could fall in the compression zone under most gravity loadings.
Thanks!
In a doubly reinforced concrete beam that is a part of a moment frame, does ACI 12.2 govern the length of splice of the top reinforcement or 12.3. The building is already built and uses 12" splices for all top bars at midspan. 12" does not meet 12.3 for the bar size used, but it is way off if 12.2 governs. I doubt that the intent of the top bars was to carry compression loads (most likely for ductility and to satisfy 12.11/12.12), but technically they could fall in the compression zone under most gravity loadings.
Thanks!