i have read some previous topic regarding this matter but i really cannot get the simple answer.
please can somebody clarify if seismic force need to be added to operating load (OPE+SEIS) to compare to nozzle allowables of any equipments (i.e. API610)?
and also, is it necessary to add seismic x and z by SRSS combination method before adding to load combinations?
your reply is greatly appreciated.
regards!