Engineering task and calculation objective
The OB module is not a calculation module in its own right but a selection and entry-point tool: via the "Start selection" function, it guides the user to the appropriate calculation modules of the library. Instead of evaluating formulas, it serves navigation purposes – for example, to open the correct verification or design module starting from a given engineering task.
Such dispatcher modules are useful in extensive calculation libraries for pressure equipment engineering, because many tasks (e.g. wall thickness, flange or nozzle verifications) are spread across several specialised individual modules. Entering via the selection ensures that geometry, load type and design code lead to the right module.
Calculation workflow
- Start the selection: The user starts the selection and is guided through the available calculation topics.
- Narrow down the task: Based on the component, loading and design code, the appropriate individual module is identified.
- Open the target module: The selected calculation module is opened with the actual input and output screen; the engineering calculation itself takes place there.
Input quantities
| Quantity | Symbol | Unit |
|---|---|---|
| Start | <1> | – |
Frequently asked questions
Does the OB module itself perform a calculation?
No. It contains no calculation logic, only the start function for a selection. The actual verifications and design calculations take place in the target modules to which the selection leads.
When is entering via the selection useful?
Whenever it is not clear from the outset which individual module covers the task – for example, because a component is handled in different modules depending on geometry or design code. The guided selection avoids starting a verification with an unsuitable module.