Hi, I am modeling a building with a lateral system of reinforced concrete masonry shear walls. I am using ram structural and since there is no way to model cmu in ram I am having to fake them in as concrete walls. I used the TEK approximate concrete thickness and f'm for f'c, but I couldn't find any literature on what stiffness modifiers to use to capture the drift. Can anyone point me to something that talks about this or if you have any experience with this. Thanks
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