CMU Question
CMU Question
(OP)
When I design CMU, I never take advantage of the allowable stress increase that ACI 530 allows, because IBC requires you to use the "alternate" load combinations in order to take advantage of any allowable stress increase that comes from a material standard.
I'm working some questions and it looks like (when determining a maximum allowable moment on a CMU wall that is subject to wind/seismic) that the question expects you to use the 1/3 increase. There are answers that correspond to the values with and without it. I guess it makes sense based on the question to use the stress increase, because is the maximum allowable moment of the section. The moment demand will change based on IBC, but that's not really the question. I guess I've answered my own question just typing this post.
I'm working some questions and it looks like (when determining a maximum allowable moment on a CMU wall that is subject to wind/seismic) that the question expects you to use the 1/3 increase. There are answers that correspond to the values with and without it. I guess it makes sense based on the question to use the stress increase, because is the maximum allowable moment of the section. The moment demand will change based on IBC, but that's not really the question. I guess I've answered my own question just typing this post.






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RE: CMU Question