Displacement of piping with soil properties is very large, as if the soil properties are not considered during the analysis, why?
There are 2 things to check that would cause this issue.
Be sure to check soil properties dialog to ensure that the all 16 values used are > 0.00. If not, enter a value > 0.00 and re-run the analysis
With AutoPIPE V8i 09.06.00.xx and higher, confirm the Static Analysis set dialog screen, Soil Stiffness is Set to Low, High, or Avg.
See AutoPIPE online help for details on this setting.
"Displacement" sub report