Seismic Decoupling of branch lines from run lines
Seismic Decoupling of branch lines from run lines
(OP)
We are using a seismic decoupling criteria of 25:1, where if the branch pipe to run pipe moment of inertia ratio is 25:1, we seismically decouple the branch from the run in the run pipe analysis. However, the branch pipe analysis apparently needs the seismic spectra input specifically for the run/branch interface. Is there any piping analysis software that can provide the response at the run/branch interface? We use AutoPIPE.





RE: Seismic Decoupling of branch lines from run lines
The movement of the main at the connection can have huge effect on the branch loads.
PC power is cheap, why not just run a whole model?
John Breen has talked about this.
http://65.57.255.42/ubbthreads/ubbthreads.php?ubb=...