I've got an error message when I tried to setup a pipingmodel with two piping codes in one model. (Stoomwezen, for low carbon and BS7159 for FRP).
Is it possible to use more then one piping code in one model?

Yes you can build a single model that addresses multiple piping codes. Here is an example report from Version 5.10 (still in development) where we've added the applicable Code Name to each line of the stress report.



CAESAR II has always allowed this, but there was no way in the stress report to easily determine the applicable code - hence the 5.10 change.

Having said that, both Stoomwezen and BS-7159 are somewhat special Codes, so perhaps this combination is incompatible. Rather than guess about this, can you send me your input file? (Send it to techsupport@coade.com.)