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Why is the force in the operating load case zero at a rod hanger?

April 26, 2017Case force hanger load operating Rod Zero

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Why is the force in the operating load case zero at a rod hanger?

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A-49. Zero force means at the hanger means it is lifting up in the operating load case. Note that in CAEPIPE, the redistributed weight in the system, because of a support lifting up, is not used to recompute the Sustained stresses. The stresses are from the as-installed cold condition. For the rod hanger, you may want to check the other load cases’ results (such as Sustained and Thermal) to determine the design loads.