Dear all,

Thank for your help. Finally, I have understood something about stress analysis, even though not much ^^, I will have to submit my work to my professor this Monday so I hope you can help me confirm my work is acceptable or not:

+ Pipe materials: PVC, C-PVC, PE, PP, assumed isotropic
+ Allowable stress: hot/cold=HDS*Temperature derating factor
+ Code used: B31.3
+ Stresses checked: Sustained and Expansion

Best regards,