Creating Spring Load Cases - CAESAR II - Help

CAESAR II Users Guide (2019 Service Pack 1)

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English
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CAESAR II
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CAESAR II Version
11.0 (2019)

Up to three load cases are needed for spring sizing:

  • Restrained weight (required)

  • Operating load (required)

  • Installed weight (optional)

After the hanger algorithm runs the hanger load cases, CAESAR II selects the hangers. The software inserts the newly-selected springs into the piping system and includes them and their preload (the theoretical cold load) in the analysis of all remaining load cases.

Hanger installed loads are concentrated forces and are only included in subsequent load cases that contain the hanger preload force set (+H).

You can specify any number of user-defined load cases after setting up the required spring load cases.

Spring hanger design does not affect the ability of CAESAR II to check code compliance. In load cases recommended by the software, the normal code compliance cases always follow the set of load cases required for hanger design.

Multiple operating case spring hanger design implies that hanger loads and travels from more than one operating case are included in the spring hanger selection algorithm.

Each spring in a multiple operating case hanger design has a Multiple Load Case Design option. This design option tells the software how multiple loads and travels for a single hanger are combined into a single design load and travel. The set-up of the analysis cases is slightly different for multiple operating case hanger design in that now there is more than one operating case. You can use the Hanger Design Control dialog to specify the actual number of operating cases.

The load cases that you analyze for multiple load case hanger design operating cases are:

  • Restrained weight (this does not change)

  • Operating case #1

    through

  • Operating case #9

  • Installed weight (if requested)