User input Spring Rate Uncorroded - PV Elite - Help - Hexagon

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Enter the spring rate for the thin walled (bellows) expansion joint or a thick walled (flanged/flued) expansion joint. If there is no expansion joint, this input should be disabled.

The spring rate of the thin walled expansion joint (bellows kind) can be computed using the Thin Joint module of the program, which is based on ASME appendix 26.

The spring rate of the thick walled expansion joint (flanged/flued kind) can be computed within the tubesheet modules when the user specifies the expansion joint design option as Analyze, and enters the expansion joint geometry. This calculation is per TEMA RCB-8.

Alternatively, the user can also use the Thick joint module to compute the spring rate, but this is not a preferred way as it involves manual transfer of data between the tubesheet and Thick joint modules.

The uncorroded and corroded spring rates will be used for running the multiple load cases in uncorroded and corroded condition.