When defining a response spectrum function from file, why we should specify a "function damping ratio"? I think it’s already used to calculate the introduced spectrum.
Thanks
Can anyone give me some guidance for seismic design of concrete stairs attached to the main structure?
Some questions I have included:
Shall we consider stairs as non-structural elements?
If yes, how calculate the seismic forces?
Can the stair pans be assumed to act as a diaphragm to resist...
