Hello mariog,
is the first time for me that I have to model a buried pipeline, then I have a lot of doubts and I don't know if the model is correct.

1) I modeled a bend simply with a piece of pipe,double-clicking on bend check box and appropriate bend radius(8764m). How do you intend to model a bend with radius 40ND?

2) I calculated virtual anchor lenght as per Peng's formula and value is 250 meters. Also CAESAR II Basic Soil Modeler calculated a similar value.
But, virtual anchor lenght is another doubt. At the and of 250 m of pipe I have a 128 mm of axial displacement (in theory after VAL I should have zero axial displacement); I try to model another piece of pipes (300m,400m,etcc) but I have ever a certain value of displacements. How does Caesar show the virtual anchor point if It shows ever a axial displacement?