Seismic design of concrete stairs
Seismic design of concrete stairs
(OP)
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 lateral loads?
Shall we consider stairs stiffness for the evaluation of the centre of rigidity?
Are there any special requirements for support attachments to the main structure?
Are there any design references or guidelines published for the seismic design of stairs?
Thank you.
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 lateral loads?
Shall we consider stairs stiffness for the evaluation of the centre of rigidity?
Are there any special requirements for support attachments to the main structure?
Are there any design references or guidelines published for the seismic design of stairs?
Thank you.






RE: Seismic design of concrete stairs
RC
All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke
RE: Seismic design of concrete stairs
Thanks
RE: Seismic design of concrete stairs
RC
All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke
RE: Seismic design of concrete stairs
RE: Seismic design of concrete stairs
In this case, the stairs must be attached to the main structures, and it is clear that stairs will be attractive point of seismic forces, but many seismic codes consider that stairs as secondary element (seismic codes says any think about if stairs must be or not attached to the main structure)
In my opinion, it is interesting to make a “U” enclosure shear wall to protect stairs (when attached to the structural system), shear walls attracts seismic forces, and no seismic forces to the stairs (secondary element),
Is this correct?
Thank
RE: Seismic design of concrete stairs
Dik
RE: Seismic design of concrete stairs