In my project, there are piping systems that must be analyzed based on code calculations (i.e. Boiler piping, etc. ) and other systems that are called BOP (Balance Of Plant) piping that is non-crucial piping that has lower specifications for analysis than other code required piping. As such the Seismic G factors are different for these different systems.
So How can I apply the correct G factor in our model?
Please consider using 1 of the following options:
If all the piping segments are NOT connected together (contains 2 or more disconnected systems). Recommend that they be analyzed in different models with different settings as needed.
When using Load> Static Earthquake, the "G" force are applied to the entire model. There would be no way of dictating different static earthquake loads factors to specific pipe supports. That would be a feature when performing a MSRS or SAM analysis.
Apply the earthquake as a MSRS analysis. See the following file (AutoPIPE_MSRS_Example1.pdf) that was installed with AutoPIPE on your computer:
AutoPIPE CONNECT 10.x an higher: Please see the following AutoPIPE help section:
Help > Contents> Contents Tab> Bentley AutoPIPE> Supplemental Documentation>
AutoPIPE V8i 09.06 and lower
C:\ Bentley\ AutoPIPE SELECTseries\ Documents\
This is a good tutorial on how to perform a MSRS on a piping system. You would group the supports for one type of piping system into one support group, then all the other piping system supports into another support group, and apply the different responses as needed.
"Static Earthquake" Load Case