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Here's my thoughts to your response: 1) That is unfortunate because I feel like I am banging my head against a wall every time this comes up! 2)I agree especially because ACI has provisions to make sure your stirrups are properly anchored. 3)You mention using shear span as an indicator. Why not...

Hi All, Looking for some input on how you all handle ACI requiring tension ties anchorage at nodes. ACI Section 23.8.2 states Tie reinforcement shall be anchored by mechanical devices, post tensioning anchorage devices, standard hooks or straight bar development in accordance with 23.8.3 (Tie...

Thanks for the replies everyone. I think I am on board with just sticking with a C shaped core. Too much of a pain to rely on the punched portion of wall.

I have recently worked on a project where there was not much insight between the architect or other structural engineers on how required elevator openings are handled for concrete core walls acting as lateral shear walls for the building. The elevator manufacturer's, which have unique...