Library Stack Weight towards Seismic Dead Load
Library Stack Weight towards Seismic Dead Load
(OP)
Does anybody know of a good reference to the percentage of library stack loading that should be counted towards the Seismic Dead Load? I could take 25%, as the Codes suggest for storage, but this seems to be a bit more specific, and permanent of a case. Thanks!
Lenny
Lenny





RE: Library Stack Weight towards Seismic Dead Load
RE: Library Stack Weight towards Seismic Dead Load
RE: Library Stack Weight towards Seismic Dead Load
RE: Library Stack Weight towards Seismic Dead Load
RE: Library Stack Weight towards Seismic Dead Load
For loose shelves, that would rock around in a seismic event, their mass participation in the seismic load could definitely be different.
RE: Library Stack Weight towards Seismic Dead Load
RE: Library Stack Weight towards Seismic Dead Load
RE: Library Stack Weight towards Seismic Dead Load
When one considers that durations of killer earthquakes are in the order of 30-45seconds(I was once in a country that suffered a bad 45second one), then one may appreciate that the books may not have time to slide over each other and gain enough momentum to fly over the room.
I would go with JAE's number, 70-75%. In the code I am using(highly seismic location) it is 80% for warehouses and 60% for a shopping mall). So JAE's number makes good sense for a library
respects
ijr