Hi,

I'm using CAESAR II 4.50 and I don't find the same thermal expension for FRP pipe in the "Piping Error Checker" and "Static output Processor" than the one I put in the "Kaux, Special execution parameter".

In the Kaux table (special execution parameter) I put 0°C for the "ambiant temperature" and 30length/length/° for "FRP Coef. of Thermal Expansion x 1 000 000".
In the "Piping input" I put 1°C and I choose the Material "(20)FRP". There is not pressure.
When I run the "Piping Error Checker" Caesar writes that the Thermal expansion is 0.000026 length/length instead of 0.000030! In the "Static Output Processor" it gives for temperature case alone T1 (EXP) a displacement of 0.026mm for a 1 meter pipe run instead of 0.030mm!

I got the same problem using US units: with 1000 inch pipe long, 1°F for T1, no pressure and 0°F as ambiant temperature, the default 12 length/length/° for "FRP Coef. of Thermal Expansion x 1 000 000". With these inputs I got 0.010 in. displacement in T1 (EXP) case instead of 0.012in.

What is wrong?