WNC case(for steam piping - any differance?) with anchor free at turbine nozzle with springs locked I understand, but why with springs unlocked?
Moreover, this we do with as-built ISO with actual weights of valves, flanges & insulation etc when cold setting method of springs is adopted.

In turbine piping, many times failure to meet the allowables with feasible piping layout is a reality & a compromise of higher nozzle allowable is very often worked out between A/E firm & turbine vendor.

How practical it is to keep the steam turbine in a high wind load & consequently meet the low turbine vendor nozzle allowable is to be seen with the big picture of sound operability of the steam turbine in view!

I am totally in agreement with LufSir - these are too involved areas
requiring experienced competent designers; this may not be a rocket science, but use of software by too young is risky for the owner of the plant like giving a gun in the hand of a student!

regards,

sam