I am working on a system that has a composite material in it. Part FRP and part metallic.
It has come to my notice that there are high horizontal forces on anchors even in Sustained case. This force then adds on to the thermal forces and shows up a higher value in Operating case.Does Caesar consider pipe expansion in Sustained case for FRP pipes causing horizontal force in Sustained.
I have input all data that are required under ISO 14692 in Allowable Stresses.Similarly inputs as required in CFG file and Special Execution Parameters are used.

I tried lowering the pressure value in Caesar.With low pressures the anchor forces remain the same , thus eliminating doubts on Bourdon effect.

Are we missing something in the input.If this is usual behaviour,then is there a work around this issue.

Thanks in advance.