Thank you very much, Luceid. Your insight into the code is very helpful for my understanding. The exception in ASCE 12.2.3.3 appears very reasonable and we do have a two-story residence of light frame construction. The diaphragm design for the worst R-value is very logical. Much appreciated Sir!
Designing a residence with flexible roof diaphragm and one moment frame. All other lateral force resisting elements parallel to the frame and perpendicular to the frame are wood frame shear walls which would normally require R=6.5. The ordinary steel moment frame requires R=3.25. We have...
