When calculating a RSS is there a minimum number of tolerances than can be used? I have seen RSS results with 2 tolerances(the very minimum) used for the calculation and have been told that an RSS should not be used unless there are 5 or more tolerances used in the calculation. Nobody where I work can tell me where the 5 or more rule originated. All my research into this has not come up with a reason why this is enforced.
Any input/comments would be greatly appreciated!
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