PROBAD is the standard solution for code-based strength calculations of pressure parts, developed and distributed by SIGMA Ingenieurgesellschaft mbH.
For details please check the PROBAD pages

The PROBAD functions in ROHR2 are used to export data of the selected areas to PROBAD strength calculations.

Data transfer process

ROHR2 determines the different, exportable components existing in the marked area in the sense of PROBAD.

Rigid beams are normally interpreted as design aid (exception: brackets, saddles), e.g. to define the exact position of off-center branches. Rigid beams are therefore ignored when searching for branches. The search continues across rigid beams until a valid branch element is found.

For brackets and saddles, rigid bars or other profiles can be used to model the connection from the vessel to the bracket or saddle (= support in the ROHR2 model).

The data can be exported for one or more calculation standards. A directory structure is created according to the PROBAD data directory.

For each calculation standard, not all components are available in some cases. The components that are not possible for a calculation standard are deactivated during the export.


Database and Materials

ROHR2 uses the PROBAD FEZEN database partially which makes the materials clearly assignable.
Projects, generated by former ROHR2 releases can be part of the PROBAD export, too. In this case just the component type and the delivery status is missing and needs to be completed PROBAD.


Supported PROBAD components

  • Cylinders / Cylinders + branch
  • Bend, , miter bend,/ bend + branch
  • Cone / cone + branch
  • Tee
  • Spherical fitting
  • Flat plate
  • Head / head + branch
  • Flanges
  • Vertical vessel on feet
  • Vessel skirt
  • Brackets
  • Saddle

Import of pipe classes

The import of pipe classes from PROBAD is implemented.

Insert support constructions

At special analysis cases like PROBAD or ROHR2fesu particular support constructions like brackets or saddles may be inserted