Kidnly help me in this regards. I need to do analysis of pipes for lifting the pipes already commissioned for placing Neoprene pad beneath them. I need help in following regards.
1. What will be the basis for evaluation of stresses?
2. Whether I need to check the expansion stresses?
3. How to simulate the said sceario in CII?

Code for design is B31.4 and we are planning to lift the segments around 50 m at a time for the continuos pipe run of 3-4 km.