I understand the requirement for ductility. If I use the smaller R value of 3.5 for the intermediate shear walls instead of the R value of 5 for the special shear walls, then I am designing for 43% more shear. I was thinking of analyzing the existing building with the addition using R=3.5. The...
I need to design an addition to an existing CMU structure in SDC D. The building was constructed in 1991 and has reinforcing consistent with an intermediate masonry shear wall. Per the ASCE 7-05 I have to use special reinforced masonry shear walls for SDC D. The existing wall I will be adding...