In some cases, we want to design the hangers with the given installation load, but when we give the hangers with the initial load(such as,20000N), after the calculation, the load under the "sus" case is not equal to the given value(20000N).My question is that:
1. why it happened?
2. If we want to design the hangers with the given load, how can we get the same load under the "sus" case?