Controls the pressure stiffening effects on elbows. Pressure stiffening has its most significant effect in larger diameter bends adjacent to sensitive equipment (compressors). Including pressure stiffening where it is not included by default draws more of the system moment to the nozzle adjacent to the bend.
This option is controlled using the CAESAR II setup file but is most commonly left to the default condition. The default is different for each piping code because some codes mention pressure stiffening explicitly, while others do not. Available options are:
Yes
Include pressure stiffening.
No
Remove pressure stiffening.
Default
Follow the piping code default.