I arrive a bit late to this thread but I would like to share my opinion about punching shear and shear.
1- Punching shear is a local process, with failure mode different than that of shear. Punching shear failure develops a strut-and-tie scheme at the vicinity of the column, independent of the...
You should specify the element you are designing. If your lateral resisting system consists of shear walls or columns, then most probably the combination with the less axial force (Comb 8) will govern. Have a look on the interaction diagram (M-N) of the element. You will notice that big axial...
Under lateral loads, both flexural and axial stiffness's of the elements intervene. Also please note that the stiffness cannot be calculated as a property. We talk about the stiffness in a point of the bar, not just about the "stiffness". Because it varies along the height of the building...
